Docstoc feed for: Legal->Patents->Wood Turning

Woodturning Tool - Patent 7490640

Patents-434 — Fri, 15 Oct 2010 15:40:57 GMT

shared by: Patents-434 on: Friday, October 15, 2010

FIELD OF INVENTIONThe instant application relates to woodturning tools for creating wood containers.BACKGROUND OF THE INVENTIONWoodturning is a form of woodworking that is used to create wooden objects (e.g. a bowl or a table leg) on a lathe using cutting tools. Woodturning differs from most other forms of woodworking in that the wood is moving while a relativelystationary tool is used to cut and shape the wood. Many intricate shapes and designs can be made by turning wood or woodturning.Despite the advances in technology for manufacturing wood products, hand turned products are more highly valued and sought after than mass-produced products. This creates a high demand for hand turned products. Also, woodturning products byhand is a hobby enjoyed by many. Accordingly, there is a need for tools for creating hand turned products.One area of hand turned products is hand turned containers. Hand turned containers include, but are not limited to, bowls, platters, cups, goblets, dishes, plates, saucers, pots, tumblers, teacups, tasters, etc.There are many problems and difficulties with creating a hand turned container. These problems may include: creating a uniform or controlled wall thickness, the strength of the walls, the aesthetic appearance of a hand turned container, the timeit takes to create a hand turned product, the amount of skill required, and the amount of time it takes to cure a hand turned product.Accordingly, there is a need for a woodturning tool for creating hand turned containers that addresses all of these problems.SUMMARY OF THE INVENTIONThe instant invention is a woodturning tool for creating containers. The woodturning tool has a first rigid arm, and a second rigid arm. The first rigid arm has two ends with a cutting blade at the first end. The second rigid arm has two endswith a guiding device at the first end. The cutting blade and the guiding device are operatively aligned. The first and second rigid arms are adapted to move relative t

Wood Lathe With A Tracing Unit - Patent 6640849

Patents-434 — Sat, 18 Sep 2010 02:33:30 GMT

shared by: Patents-434 on: Saturday, September 18, 2010

CROSS REFERENCE TO RELATED APPLICATIONThis application claims priority of Taiwanese Application No. 90217523, filed on Oct. 15, 2001.BACKGROUND OF THE INVENTION1. Field of the InventionThis invention relates to a wood lathe, and more particularly to a wood lathe including a tracing unit, by which a groove pattern on a sample bar is traced mechanically and is duplicated on a bar blank.2. Description of the Related ArtReferring to FIGS. 1, 2 and 3, a conventional wood lathe 10 is shown to include a lathe bed 11, a blank-holding unit 12, a sample-holding unit 13, a moving unit 14, a blade unit 15, a tracing unit 16, and a tension spring 17. The blank-holdingunit 12 consists of a headstock 121 and a tailstock 122, which are provided with a pair of clamping elements 1211, 1221 that clamp and fix a wood bar blank (not shown) therebetween. An output shaft (not shown) is journalled to the headstock 121, and isconnected fixedly to the clamping element 1211 so as to rotate the bar blank (not shown) when the output shaft rotates. The sample-holding unit 13 includes two bases 131 that are disposed slidably on and that are locked releaseably on the lathe bed 11,two support frames 132 that are inserted respectively into two hollow posts 1311 of the bases 131, two height-adjustable movable members 133 that are sleeved respectively on the support frames 132, two horizontal mounting rods 134 that are connectedfixedly to the movable members 133, and two clamping elements 135 that are connected respectively and fixedly to the connecting rods 134 and that clamp and fix a sample bar (not shown) therebetween.The moving unit 14 includes a track unit 141 that is connected fixedly to top ends of the support frames 132, and an interior sliding block 142 that is disposed longitudinally and movably within the track unit 141. A generally U-shaped exteriorsliding seat 143 is disposed movably on an outer surface of the track unit 141. A bottom sliding member 144 is connected fixedly to th

Tool Rest - Patent 5992482

Patents-434 — Mon, 23 Aug 2010 22:46:47 GMT

shared by: Patents-434 on: Monday, August 23, 2010

The present invention relates to a device for supporting a tool relative to a lathe or wood-turning apparatus.BACKGROUND OF THE INVENTIONConventional tool-rests, for use with lathes or other wood turning apparatus, typically comprise a pillar having a single horizontally projecting arm for supporting a cutting tool. The projecting arm provides a fulcrum for the shaft of thecutting tool whose forward end is held in place by the turner's leading hand, the cutting force being prevented from snatching the tool-tip downwards by means of a counter-leverage applied to the handle of the tool gripped by the turner's other hand.It is essential that support is provided as close as possible to the surface of the work-piece so that the shaft of the cutting tool is not subjected to an excessive torque and so that optimum control over the tool tip is maintained. Therefore,when performing a bowl hollowing operation, the pillar is preferably rotatable about a vertical axis through its centre to allow the support arm (which may be arcuate in form) to project into the concave interior of the bowl being formed.However, a significant drawback of such a tool-rest is that, in order to hold a tool in place whilst forming the interior of a bowl, the turner is forced to place his leading hand inside the rotating bowl, an obvious safety hazard.It is an object of the present invention to provide a tool-rest which overcomes the above-mentioned drawback of existing support arrangements.SUMMARY OF THE INVENTIONIn accordance with the present invention, there is provided a tool-rest for attaching to a lathe or wood-turning apparatus, said tool-rest comprising a pillar, for mounting rotatably about a first vertical axis and having a first horizontallyprojecting portion and a second horizontally projecting portion rotatable about a second vertical axis.Thus, a cutting tool may have its forward end rested upon said first projecting portion, which may project into the interior of a bowl, whilst the t

Copying Cutting Device For Wood Lathes - Patent 5884680

Patents-434 — Wed, 18 Aug 2010 09:51:36 GMT

shared by: Patents-434 on: Wednesday, August 18, 2010

(a) Field of the InventionThe present invention relates generally to a copying lathe, and more particularly to copying cutting device for wood lathes, which enables mass processing of products to achieve consistent form and specification in an economical and speedymanner.(b) Description of the Prior ArtConventional wood lathes are usually not provided with copying cutting function. It depends upon the skill of the carpenter to cut, process and shape the products. Understandably, there are various drawbacks with them, which are listed below:1. The worker has to be very skillful and experienced in order to produce satisfactory products. Ordinary workers are unable to do that, which means that prolonged training is necessary.2. The products made by individual workers cannot be exactly identical in specification and form, so that quality is hard to control, and assembly is not easy. Besides, mass production is not possible.3. It will be labor consumptive to try to manually produce products of identical form and specification. Faulty products may easily result, which will increase costs.Although there is a kind of wood lathe which is equipped with a copying cutting device. The manufacturing cost is high and it can provide only a single cutting function, which is not economical.SUMMARY OF THE INVENTIONAccordingly, a primary object of the present invention is to provide a copying cutting device which may be mounted on a wood lathe to provide it with copying cutting function. The device of the invention enables ordinary workers to easilyproduce products of identical specification and form in a speedy manner, thus enhancing production capacity, reducing work hours and faulty product rate, as well as costs. Besides, the specification and form of the products may be consistent, thusenhancing product quality and appearance. BRIEF DESCRIPTION OF THE DRAWINGSThe foregoing and other features and advantages of the present invention will be more clearly understood from th

Head And Tail Stocks For Woodworking Lathes - Patent 5915428

Patents-434 — Mon, 16 Aug 2010 08:18:23 GMT

shared by: Patents-434 on: Monday, August 16, 2010

The present invention relates generally to headstock and tailstock chucks, fixtures and similar devices for holding a workpiece during a machining operation and more particularly to headstock/tailstock fixture combination for holding wooden orsimilar workpieces during a turning operation in a lathe.Wood or metal turning lathes typically employ a "live" center for drivingly engaging one end of a workpiece, or a three or four jawed chuck for similarly drivingly gripping one end of a workpiece, and a "dead" center for supporting the onpositefreely rotatable end of the workpiece. The use of live or dead centers requires the preliminary locating of the center of each end of the workpiece before mounting it for a turning operation. The use of a chuck requires adjusting the chuck jaws tosecurely grip the workpiece. In either case, it is time consuming to mount the workpiece preliminary to the turning operation. Elimination of the need to find the center of the stock is highly desirable and greatly reduces the time required to mountthe workpiece.There have been a variety of attempts to eliminate this time consuming step. These include U.S. Pat. Nos. 39,608; 60,169; 95,694; 129,705; 2,370,918; 3,099,173; 3,273,611; and 4,702,132. as well as German DD 278,982 and Russian SU 1,491,622.Of these known prior art attempts, several have employed conical surfaces, some with inner tapering slots. The slots are required for the headstock fixture to insure adequate driving force being applied to the workpiece. For example, Grosse4,702,132 employs not only slots in the live center so that the workpiece may be driven, but also slots in the deadcenter. This works adequately for square stock, but fails for other rectangular cross-sectional stock, Gardiner 60,169 suggests threeequiangularly spaced tapering blades as a livecenter. This works for circular cross-sectional stock, but utterly fails to center either square or other rectangular cross-sectional stock. others have sugg

Wood Turning Tool - Patent 5850860

Patents-434 — Mon, 16 Aug 2010 05:34:35 GMT

shared by: Patents-434 on: Monday, August 16, 2010

This invention relates to cutting means. In particular, one preferred form of the invention relates to a cutting tool for use in wood turning.BACKGROUND ARTIt is known in the art to use tools which comprise a sharp blade for fashioning a piece of wood as it spins on a lathe. However, a problem with many known tools is that they have a blade construction with insufficient strength, and hence bladebreakage is an all too common occurrence. Additionally, some known tools have a very limited cutting capacity, or are prone to inconvenient blockage by wood shavings. It is therefore an object of at least one embodiment of the present invention to goat least some way towards overcoming the above problems.DISCLOSURE OF INVENTIONAccording to one aspect of the invention there is provided cutting means comprising a support portion and a blade portion, the blade portion being in the form of at least one closed curve or loop and having a cutting edge extending at leastpartially around the closed curve or loop.In one embodiment of the invention the cutting means comprises clearance means, the cutting means being formed such that when it is used to cut an object the clearance means is suitable for use in clearing cuttings from the object away from anarea adjacent the blade portion.Preferably the clearance means comprises a deflecting portion which can be arranged adjacent the blade portion to deflect cuttings away from the blade portion.In one alternative embodiment of the invention the clearance means comprises an aperture which can receive an implement for pushing cuttings away from the blade portion.In another embodiment of the invention there is provided cutting means according to any one of the four immediately preceding paragraphs, comprising adjustment means for regulating the cutting capacity of the blade portion.Preferably the adjustment means comprises cover means which can be reversibly moved over or across at least part of the blade portion.Preferably the cover means

Versatile Lathe Chuck - Patent 5906230

Patents-434 — Sun, 15 Aug 2010 17:45:59 GMT

shared by: Patents-434 on: Sunday, August 15, 2010

This inventionrelates to an improved lathe chuck characterized by having a variety of fittings adapted for different work pieces. The improved chuck is simple to manufacture and is very easy to use.BACKGROUND OF THE INVENTIONIn the use of a wood or metal lathe the work pieces vary in size and substance and often require different types of chucks to hold the work. This makes it necessary to have a large variety of chuck inserts on hand and special chucks must oftenbe made for particular types of work. This invention provides a chuck which is versatile in that it is adaptable for different work pieces, is very easy to use, and is simple and inexpensive to manufacture.BRIEF STATEMENT OF THE INVENTIONThis invention embodies a versatile lathe chuck characterized by a chuck body threaded on the inside for attachment to a lathe spindle and to receive at its work-turning end a variety of fittings adapted for the work involved, and furthercharacterized by a jam or locking screw which threads into the inside of the chuck to lock the insert in place.DISCUSSION OF THE PRIOR ARTU.S. Pat. No. 1,246,697 discloses an attachment to lathes for centering and driving the work and also provides means to protect the hands, protect the work driving means, and provide means to cause the driving member to recede in the event ofany overfeed of a self-feeding tool. The lathe attachment has an internally threaded body for attachment to the lathe spindle and a work driving piece is inserted through a tapered clamping member. Thus, this attachment requires a plurality of complexparts and is difficult to make and to use.U.S. Pat. No. 2,313,963 discloses a tapered shank adapted to fit into an opening in the tail stock of a lathe. The tapered shank rotates on ball bearings which require a lubricant for proper operation. The tool provides for an adapter whichmay receive one of a plurality of work receiving tools. Because of the ball bearings required, this tool is complex and expensive.U

Hand Held Duplicator Tool - Patent 4491162

Patents-434 — Wed, 11 Aug 2010 12:02:51 GMT

shared by: Patents-434 on: Wednesday, August 11, 2010

1. Field of the InventionThe present invention relates to tools used with wood turning lathes for making duplicates of a pattern on the wood turning lathe.2. Description of the Prior ArtU.S. Pat. No. 3,768,527 there is a shown a hand held tool for duplicating patterns on a wood turning lathe. The tool includes a platform that moves along a surface of a table attached to the lathe, and also holding a pattern in position belowthe workpiece. The workpiece is rotated in the lathe and the duplicator tool has two portions, one a stylus that follows a pattern and the other portion a cutting edge tool that cuts the pattern into the workpiece as the workpiece rotates. The deviceshown in U.S. Pat. No. 3,768,527 has several limitations in its ability to securely hold the tool in position and prevent "gouging" of the workpiece because of the way that the tool is supported on its platform. Additionally, the disposal of chips andthe like in a duplicator assembly is not provided in U.S. Pat. No. 3,768,527.SUMMARY OF THE INVENTIONA duplicator tool comprises a pattern following stylus mounted on a support plate, and including a wood cutting tool positioned above the stylus so that the plate can be moved along a support surface to duplicate a pattern followed by the stylusin a rotating workpiece in a lathe. The support surface is on a table assembly that has a quick latch clamp that enables the operator to position the table at any desired location along the cutting axis of the workpiece on a wood lathe of conventionaldesign. The tool platform has a hand grip at one end opposite the cutting tool and is slid along the surface of the table and follows a pattern, and at the same time the cutting tool on the platform cuts this pattern into a rotating workpiece on thelathe. The support for the cutting tool is a post that permits vertical, adjustment, and the force is reacted so that when the hand grip is gripped, the tendency of the tool to "gouge" can easily be manually ov

Wood Turning Tool - Patent 5682933

Patents-434 — Wed, 11 Aug 2010 05:05:05 GMT

shared by: Patents-434 on: Wednesday, August 11, 2010

The present invention relates to the field of wood turning tools and more particularly, relates to a hand held wood turning tool for allowing an intended user to cut a turning workpiece in a variety of configurations.BACKGROUND--PRIOR ARTThe field of wood turning tools is replete with a variety of tools which can be used to shape wood workpieces.Whenever a workpiece needs to have a recess formed therein, cutting tools such as chisels and gouges as well as scraping tools are used to permit rapid rough cutting and scraping followed by a more careful fine surface finishing of the woodsurface in order to form an article having a recess therein.In using these tools, a cutting edge is usually pushed into the wood fibers to force their severing and, particularly in the process of end-grain hollowing of wood pieces, that pushing occurs against or across the grain of the wood. The use ofsuch a technique requires considerable expertise and concentration on the part of the tool-turner in order to minimize ragged tearing of the wood fibers or even more serious gouging of the wood.In order to circumvent the above mentioned disadvantages, a wood turning tool has been proposed and is disclosed in U.S. Pat. No. 4,754,787. Although relatively efficient, the tool described in the above mentioned patent suffers from at leastone drawback. While, this type of tool is particularly useful for forming hemispherical hollow shapes, it is not very well adapted to form oval or other shapes which are often desired.Accordingly, it is an object of the present invention to provide a wood turning tool which is suited to form recesses in wood articles such as bowls, goblets, canisters and other containers.It is another object of the present invention to provide a tool which optimizes the wood turning procedure.It is a further object of the present invention to provide a wood turning tool in accordance with the previous objects which will conform to conventional forms of manufacturing, be of sim

Dowel Maker - Patent 6263929

Patents-434 — Tue, 10 Aug 2010 22:42:47 GMT

shared by: Patents-434 on: Tuesday, August 10, 2010

This invention relates to the manufacture of wooden dowels and to devices for doing so.BACKGROUND OF THE INVENTIONWooden dowels in a wide variety of species of woods arc widely utilized for structural and decorative purposes in woodworking. Because of this, a large variety of techniques have been developed for producing dowels, and commercially produceddowels are widely available.Commercial dowel production equipment, like the machine described in U.S. Pat. No. 4,770,215, is, however, complex and expensive, and commercially produced dowels vary wildly from their intended nominal diameters, are often oval rather thanround in cross-section, and are available in a limited number of species of wood.As a result, there continues to be a need for relatively inexpensive equipment capable of producing accurately sized dowels in multiple sizes and wood species, in home workshops and small commercial workshops, despite numerous prior efforts todevelop such techniques and equipment. Among these prior efforts arc U.S. Pat. Nos. 5,127,452 and 4,553,575, a German dowel maker sold by Woodcraft Supply and the Fred Lambert "rounders" system described in Jack Hill's Country Chair Making by JackHill (Sterling 1998). Some prior devices drive a spinning workpiece through or past a stationary cutter, such as U.S. Pat. No. 4,553,575, or a spinning Cutter, such as U.S. Pat. No. 4,768,903. Others rotate a cutter about a non-rotating workpiece,as in the Stanley No. 77 dowel making machine, which rotates a cutter with a straight section and a curved section about a square cross section workpiece that is fed into the rotating cutter head without rotating the workpiece.Virtually all prior small shop dowel making devices have utilized a single cutter blade, some of which blades have a straight cutting arris (the "edge" foxined by the intersection of the bevels that cause the cutter to be sharp) and others ofwhich have a curved or partially curved cutting arris. This is problematic b

Wood Turning Tool - Patent 6253812

Patents-434 — Tue, 10 Aug 2010 07:04:37 GMT

shared by: Patents-434 on: Tuesday, August 10, 2010

This invention relates to aturning tool for turning wood. It relates more particularly to a hand-held wood turning tool which is especially adapted to form a recess in a turning workpiece of wood.BACKGROUND OF THE INVENTIONThere are a variety of situations where one may want to form a recess in a workpiece. For example, the interior of a wooden goblet has a curved recess. Also, some goblets are designed with a glass parabola which sits in a recess atop a woodenbase. Similar wooden bases are used to support bowls and other convex articles of one kind or another.Conventionally, to form a recess in a workpiece, a cutting tool such as chisels, gougers and scrapers are used to permit relatively rapid rough cutting and scraping followed by a more careful surface finishing in order to form the recess in thatarticle. The various tools are applied against the end of the workpiece which is being turned around its longitudinal axis. Invariably, these tools only engage the turning workpiece with one cutting edge at the downside of the workpiece rotation. Therefore, the user has to repeatedly check the progress of the recess with a template to be sure that it is symmetrical and centered on the turning axis. Needless to say, this makes the turning task somewhat tedious and time consuming.Therefore, there is a need for a wood turning tool which can form precisely shaped recesses in wooden workpieces more efficiently than has been possible heretofore.SUMMARY OF THE INVENTIONAccordingly, the present invention aims to provide a wood turning tool for forming a precisely shaped recess in a turning workpiece in a reliable and efficient manner.Another object of the invention is to provide a turning tool of this type which is capable of cutting a recess in a turning workpiece to a finished form.Another object of the invention is to require such a turning tool which eliminates the need for a template to check the accuracy of the recess as it is being formed in the workpiece.A furthe

Faceplate For Turning Objects On A Lathe Or The Like - Patent 5613536

Patents-434 — Fri, 06 Aug 2010 14:33:43 GMT

shared by: Patents-434 on: Friday, August 06, 2010

From the earliest days of lathe turning, there has been a requirement attaching one end of a piece of wood or other material to a rotatable arbor, normally termed the head stock of the lathe. The axis of the head stock arbor defines the centerline for turning what ever object is to be produced. In the case of short, flat objects, such as bowls, only the head stock arbor is used to act as total support for the workpiece to be turned. For longer objects, a tail stock with the center alignedwith the axis is used to hold the opposite end of the blank, its only rotatable connection to the tail stock.The classic form of attachment of the workpiece or blank to the rotating arbor is a metal faceplate made up of metal such as die cast zinc or in some certain cases, machined steel or aluminum. The faceplate typically will have a circular flatsurface attached to a central cylinder designed to mate with and be secured to the arbor shaft of the head stock. The faceplate member is usually attached to the head stock arbor by engaging threads. In some cases, keys and keyways or set screws areused to secure to face place onto the rotating arbor.The flat surface of the faceplate is usually attached to the workpiece by a plurality of fasteners such as screws which enter from the rear face through holes located between the central axis and the periphery, but usually the holes are three innumber and spaced 120.degree. apart.The faceplate must be rigid and strong enough, not only to support the workpiece along or with the tail stock, but also must hold the workpiece securely during the initial chisel cut, which usually requires a series of cuts to remove the cornersof the workpiece, which is often rectangular or square, to bring the workpiece to a circular diameter. The intermittent cutting of the chisel as each corner is removed in sequence produces great vibration and there can be no possibility of the workpieceblank separating from the faceplace.In certain cases, the workpiece

Woodworking Machine - Patent 5562134

Patents-434 — Sun, 01 Aug 2010 01:41:13 GMT

shared by: Patents-434 on: Sunday, August 01, 2010

:1. Field of the InventionThis invention relates to woodworking machines, more specifically woodworking machines for carrying out automatic working of wooden works based upon preformed digitizing data.2. Description of the Prior ArtA plurality of woodworking machines for working works into desired three-dimensional form have been well known. In such woodworking machines, a model having a desired form is manually copied by means of a copying head, while at the same time aplurality of works are simultaneously worked into the same form as said model by means of a plurality of working heads driven in synchronous manner with said model copying head.More recently, in place of these manual copying apparatuses, there have been developed and used various woodworking machines for automatically working on the basis of copying digitizing data compiled by CAD and the like.As shown in FIG. 8 which shows a portion of said conventional woodworking machine, the edge portions of a work 1 are held respectively by a swiveling table 2 and a tailstock 3 located so as to oppose each other, these swiveling table 2 andtailstock 3 being shifted along a determined guide member in the axial direction (X direction) of said work. Further, a plurality of rotary jigs 4 driven by a not-shown driving apparatus are located in parallel relation to each other on one side surfaceof said swiveling table 2, whilst respective work-holders 5 for holding said work 1 against said jigs 4 while urging said work 1 towards said jigs 4 are located on the side surface of said tailstock 3 at the points corresponding respectively to said jigs4. Further, respective cutting tools which can be shifted in the lateral direction (Y direction) and in the vertical direction (Z direction) are located above the positions corresponding to respective works 1 to be worked between said swiveling table 2and said tailstock 3. And each of these cutting tools 6 has at its point a detachable cutting blade 7.In such conventional w

Cutting Tool And Method Of Use For Catching Chips And Debris During Turning Operations - Patent 6145555

Patents-434 — Fri, 30 Jul 2010 06:32:12 GMT

shared by: Patents-434 on: Friday, July 30, 2010

The present invention relates generally to tools, and more particularly to cutting tools for catching chips and debris during tuning operations.BACKGROUND ARTLathes are widely used for the manufacture of wood, metal and plastic products. Turning operations, the process of cutting a work piece rotating on a lathe, are performed in a very wide variety of manufacturing processes and industries.Workpieces on a lathe are usually turned at a very high speed. As a cutting tool cuts the workpiece, debris is thrown from the workpiece. Often, the debris is thrown at a very high speed, endangering the operator, and making the use of safetyequipment necessary. The dust generated during the turning operations of certain types of wood, metal, and plastic, often result in a fine dust that is toxic to the operator of the lathe, and requires the use of a hood, dust collection equipment on thelathe, or a respirator.While turning operations performed in an industrial setting may afford the use of expensive debris and dust collection means, the cost of such of such systems precludes their use in small shops and homes. Often, the operators of small lathes areexposed to toxic dust, flying chips and other hazardous debris.Furthermore, debris generated during turning operations must be removed from the work area. Although lathes are relatively small tools, the debris generated during turning operations is thrown from the lathe and usually contaminates a largeportion of the workshop. In an environment where turning operations are occurring on a continuous basis, the work area must be cleaned frequently to avoid contaminating equipment, hazardous situations, such as fire and hazardous dust contamination ofthe work area, and to provide for a neat appearance. Such cleaning procedures are costly in time and money.There is no widely used method of dust collection that is cost effective. Some current systems use compressed air to blow the debris away. Blowing the debris using compressed

Automatic Spindle Making Device - Patent 6145554

Patents-434 — Fri, 30 Jul 2010 06:29:09 GMT

shared by: Patents-434 on: Friday, July 30, 2010

1. Field of the InventionThe present invention relates to lathes and more particularly pertains to a new automatic spindle making device for automatically making a spindle.2. Description of the Prior ArtThe use of lathes is known in the prior art. More specifically, lathes heretofore devised and utilized are known to consist basically of familiar, expected and obvious structural configurations, notwithstanding the myriad of designs encompassedby the crowded prior art which have been developed for the fulfillment of countless objectives and requirements.Known prior art lathes include U.S. Pat. No. 4,694,713; U.S. Pat. No. 5,065,801; U.S. Pat. No. 4,627,477; U.S. Pat. No. 4,000,766; U.S. Pat. No. 5,139,060; and U.S. Pat. No. Des. 338,475.In these respects, the automatic spindle making device according to the present invention substantially departs from the conventional concepts and designs of the prior art, and in so doing provides an apparatus primarily developed for the purposeof automatically making a spindle.SUMMARY OF THE INVENTIONIn view of the foregoing disadvantages inherent in the known types of lathes now present in the prior art, the present invention provides a new automatic spindle making device construction wherein the same can be utilized for automatically makinga spindle.The general purpose of the present invention, which will be described subsequently in greater detail, is to provide a new automatic spindle making device apparatus and method which has many of the advantages of the lathes mentioned heretofore andmany novel features that result in a new automatic spindle making device which is not anticipated, rendered obvious, suggested, or even implied by any of the prior art lathes, either alone or in any combination thereof.To attain this, the present invention generally comprises a table stand having a rectangular planar top with a plurality of legs coupled thereto and extending downwardly therefrom. As shown in FIG. 1, each leg ha

Wood Lathe Tooling - Patent 5522441

Patents-434 — Tue, 27 Jul 2010 20:02:32 GMT

shared by: Patents-434 on: Tuesday, July 27, 2010

For turning rotationally symmetrical elements such as wooden spindles or balustrades, a workpiece mounted in chucks is spun and a knife or set of knives is urged towards the work in a controlled manner, causing wood located outside the desiredprofile to be chipped away. In high speed work, the knives themselves are not held manually, but are themselves mounted on a rotary shaft which is urged transversely relatively towards the workpiece while spinning. (Actually, the spinning workpiece maybe moved transversely towards the set of rotating knives.) In the language of the trade, the rotating shaft on which the knives are mounted is termed an arbor, and the set of knives, including the structure by means of which they are mounted to thearbor, is termed a cutterhead.Although various features of cutterheads have been improved through the years, some detrimental characteristics have remained wanting improvement. Among these are the difficulty of easily and reliably mounting a cutterhead on an arbor so that itis accurately coaxial, easily and reliably mounting knife carriers on the cylinder of the cutterhead, preventing elements from being radially thrown out from the rotating cutterhead should an operator or set-up person neglect to tighten everything thatis supposed to be tightened before the arbor is rotated, a high noise level due to air turbulence about the rotating cutterhead, danger of a breaking workpiece causing damage to the cutterhead or to the operator due to penetrating and then being flungfrom a radial pocket between knives or holders in the outer peripheral surface of the cutterhead, and the perceived need to provide strength through use of massive parts, resulting in weighty cutterheads.SUMMARY OF THE INVENTIONA cutterhead, particularly for wood lathe tooling, includes one or more sleeves each of which has an inner hydraulically operated circumferential gripper for securement to a rotatable arbor, and an outer, independently hydraulically operatedcircumf

Shaft Tapering Device - Patent 5503200

Patents-434 — Mon, 26 Jul 2010 16:06:00 GMT

shared by: Patents-434 on: Monday, July 26, 2010

The invention relates to a device useful for making a shaft or rod of any-material that can be turned on a lathe, such as, wood or polymeric material or metal, whether of uniform diameter, or of uniform taper, or of controllably random taper, toa method of tapering and to apparatus for conveniently controlling the taper.BACKGROUND OF THE INVENTIONA number of devices and apparatuses have been patented that may be used to make dowels and shafts of various types, including tapered shafts, usually from wooden work stock. There are also devices for shaving, e.g., dowels, to custom fit them. These ordinarily require the use of a lathe for rotating the work piece, and usually make use of a rigid frame called a longitudinal way or bed with a driving head with a driven chuck at one end and an idler tail head or tail stock at the other end. Usually, there is also provided a tool rest that mounts on the way or bed and is movable along the way or bed. As an example, there is the apparatus of Johnson, U.S. Pat. No. 3,771,392, who describes a tool rest and tool holder, but not means forquickly and conveniently moving the tool holder along the longitudinal way, and especially not in a reproducible manner from work piece to work piece.None of the patented devices, so far as is known presently, provides adequate means for easily and accurately controlling the taper of the work piece, especially of a shaft longer than several inches, and also lacking is means for convenientlykeeping the work piece centered under the leading edge of the cutting blade at all times while being worked. The device of Lippolt, U.S. Pat. No. 4,497,352, appears to make some provision for approximate centering of the work piece as it is forcedinto the unsymmetrical V-shaped groove of the stationary block, but the provisions for tapering are not very convenient to carry out in practice, and not quickly done.The patents to Hilton, U.S. Pat. No. 3,229,731; Sprague, U.S. Pat. No. 2,913,019; Zemrowski,

Guiding Assembly For Guiding A Manually Controlled Cutting Tool - Patent 5441089

Patents-434 — Mon, 19 Jul 2010 12:16:06 GMT

shared by: Patents-434 on: Monday, July 19, 2010

This invention relates to a guiding assembly for guiding amanually controlled cutting tool.This invention has particular but not exclusive application to a guiding assembly for guiding a manually controlled tool relative to a lathe axis. The guiding assembly may be utilised to replicate a predetermined shape and for illustrativepurposes reference will be made to such application. The guiding assembly has particular application to wood turning but can also be utilised for turning metal or other materials.Duplicating attachments for lathes, sometimes called lathe copiers, are well known for wood turning. Two types of copiers are conveniently categorised as semiautomatic and manual. Both categories involve positioning a cutter by allowing orcausing a follower associated with the cutter to follow a template. When used herein, the term "template" includes reference to a flat two-dimensional template corresponding to the profile of a solid object and to a solid object which is to bereplicated.UK patent 2142569 exemplifies known manual copiers. In known manual copiers the cutter and follower are mounted in a hand-positioned unit which is supported on the lathe bed or workbench or on an auxiliary table attached to the lathe. The usercan guide the cutter relative to the template by sliding the hand positioned unit along the workbench to register against a template and effect progressively deeper cuts in the workpiece until the follower fully contacts the template throughout itscomplete length. Such duplicators are suitable for replicating small and highly detailed spindles in small numbers, but if a larger number of spindles need to be made this system becomes tedious and time-consuming. It is also difficult to obtain asatisfactory smooth surface particularly when working on large production runs of longer spindles, as for example may be required in turning porch railings. Vibration is also frequently a problem because of the absence of support or other stabilising

Lathe Cutting Tool Support And Suction Cleaning Device For Wood Lathes - Patent 4664164

Patents-434 — Sat, 17 Jul 2010 20:42:58 GMT

shared by: Patents-434 on: Saturday, July 17, 2010

Supports for the lathe cutting tool of wood lathes are usually made in one piece with a plane horizontal upper side serving as a support for the cutting tool. The lower and narrower part of the tool support isusually attached to a guide extending lengthwise along the lathe. These tool supports are often shorter than the workpiece, and therefore have to be moved along the workpiece as the tool works its way down the support.The working of the lathe cutting tool against the wood workpiece generates a considerable volume of wood cuttings, which have to be collected and removed. This is done by means of a shield, which is arched over the upper side, back side andunder side of the lathe, and guides the wood cuttings into a suction conduit connected, for example, to a motor driven centrifugal blower. This type of collection device is however effective only for particles large enough to be collected by gravityflow along the shield. The finest particles, which have a tendency to become entrained in air, escape,and can create a cloud of dust surrounding the lathe.In accordance with the invention, this difficulty is overcome by combining a lathe cutting tool support with a suction cleaning device, and forming the device in a box enclosure having an open interior for reception of the wood cuttings generatedby the lathe cutting tool working against the wood workpiece. The box enclosure is elongated to extend for at least a substantial portion of the long dimension or length of the wood workpiece whether this be elongated or circular, or indeed of anystraight or curved contour. At least a portion of one side of the box is formed to support the lathe cutting tool in working against the wood workpiece, while traveling lengthwise along the lathe. The box is provided with an elongated opening in closejuxtaposition to the side support, communicating into the interior for passage of wood cuttings generated by the lathe cutting tool into the interior; and a suction conduit comm

Copy Lathe - Patent 4628975

Patents-434 — Fri, 16 Jul 2010 12:31:11 GMT

shared by: Patents-434 on: Friday, July 16, 2010

Thisinvention relates to a copy lathe which is particularly suitable for wood turning although it can also be used for turning other materials, including certain soft free machining metals, fabricated bakelite and the like.BACKGROUND OF THE INVENTIONAlthough highly skilled operators can frequently copy one turned workpiece with another, the copying has minor inaccuracies, and a less skilled operator often has difficulty in making two products look similar, yet it is quite important in manyapplications that they should have similar appearance, for example the stanchions of a banister or staircase rail.These problems have been recognised and the reader's attention is directed to the U.S. Pat. Nos. 3,768,527 (Messick) and 4,256,155 (Hochstatter et al). The Messick disclosure shows a flat plate arranged to be secured to a flat lathe bed andto have on it a freely movable tool, the base plate having a first arm that supports a pattern follower and a second arm which supports a second cutting tool above and in vertical alignment therewith. However there is an inherent difficulty in the useof such a tool, in that it is limited to a "short toe", and should the tool "dig in" to the workpiece, it will tend to both tilt about the toe of the base plate and also bend the base plate and column, and a workpiece can be damaged by such anoccurrence.The main object of this invention is to overcome such problems and in this invention the pattern, or template, is supported on surfaces which place it above the bed of the lathe, and the base of the tool holder has its toe projecting forwardlybeyond the follower guide and beneath the template.BRIEF SUMMARY OF THE INVENTIONBriefly in this invention a copy lathe is provided with template supports projecting from both head stock and tail stock which support a template above the bed, and clamp means clamp the template to the support means, there being provided a toolholder having a follower guide thereon which extends vertically upwardly

Lathe, Duplicating - Patent 4627477

Patents-434 — Fri, 16 Jul 2010 11:08:12 GMT

shared by: Patents-434 on: Friday, July 16, 2010

The invention resides in the field of duplicating woodworking lathes, particularly such lathes of simple type and as such, well adapted to home workshops. A special field where they are particularly useful is in making and repairing furniture.OBJECTS OF THE INVENTIONA broad object of the invention is to provide a duplicating woodworking lathe having the following features and advantages:1. A rotatable cutter bit is provided, enabling slow rotation of the wooden workpiece.2. A workpiece is produced that is of such extremely fine finish such as to eliminate the necessity of sanding, notwithstanding the slow speed of rotation of the workpiece.3. Whipping and wobbling of the workpiece is eliminated because of the slow speed of rotation of the workpiece, this being particularly pronounced, comparatively, in the case of a thin workpiece.4. The selection and use of a template or pattern is accommodated and facilitated, for producing the desired shape of workpiece.5. The lathe includes a simple construction of carriage, carrying the cutter bit, whereby to greatly facilitate setting up of the lathe.6. The lathe includes a plurality of components that are independently variable, to accommodate the hardness and the diameter of the wood, and to produce desired depth of cut and speed of transverse movement of the cutter bit.7. The cutter bit, because of its rotation, can be used for cutting longitudinal formation in the workpiece, upon holding of the workpiece stationary against rotation. DESCRIPTION OF A PREFERRED EMBODIMENTIn the drawings,FIG. 1 is a perspective view of a lathe embodying the features of the present invention;FIG. 2 is a top view of the lathe;FIG. 3 is a front view of the lathe, taken from the lower left of FIG. 1, as indicated by the arrow 3;FIG. 4 is an end elevational view of the lathe, taken from the right of the other figures;FIG. 5 is a detail view taken at line 5--5 of FIG. 1; andFIG. 6 is a view oriented according to line 6--6 of FIG. 1, and ori

Tool Support For A Wood Turning Lathe - Patent 4615365

Patents-434 — Fri, 16 Jul 2010 00:27:56 GMT

shared by: Patents-434 on: Friday, July 16, 2010

This invention relates to a tool support to assist with the control of a hand held wood turning tool whilst specialty turning processes are performed. The processes envisaged occur in thehollowing out of articles such as goblets, cups, vases and bottles.As will be understood by those skilled in wood turning leverage plays an important part in the control of wood working tools which are hand manipulated. It is important that there be a fulcrum-like support below and as close as possible to thecutting edge of the wood turning "chisel" so that the downward forces resulting from a cut being taken are able to be counterbalanced by a downward effort applied by the craftsman. Without such a support adequate control over the cutting action is notpossible and quality work cannot be readily achieved.The above requirement is particularly evident where the interior of an article of the type referred to above is to be formed. This invention provides a tool support specially developed to adequately support a hand manipulated wood working toolwhilst the interior of such an article is formed.According to the present invention there is provided a tool support comprising; an elongated body portion with a parallel sided slot therethrough extending along a major part of the body and adapted to pass the working head and at least part ofthe shank of a wood working chisel or like tool but to restrain rotational movement of such chisel or tool about its longitudinal axis; a post adapted to engage a tool support mount on a wood turning machine and to maintain the elongated body in arelationship to the piece being worked such that the parallel sided slot faces the work area; a support surface in front of the parallel sided slot and coplanar with one elongated side thereof adapted to provide additional support to a chisel or likewoodturning tool extending through the slot. One embodiment of the invention will now be described with reference to the accompanying drawing marked "FIG. 1" bein

Manual And Automatic Tracer Lathe - Patent 4611644

Patents-434 — Thu, 15 Jul 2010 21:22:44 GMT

shared by: Patents-434 on: Thursday, July 15, 2010

The present invention realtes generally to machine tools, and more particularly to a manual or automatically operated tracer lathe.SUMMARY OF THE INVENTIONIn accordance with the present invention, a combination manual and automatic tracer lathe for cutting a work piece is provided. The tracer lathe includes a lathe base and a work holding means attached to the lathe base for holding and turningthe work piece about a longitudinal axis. A cutting means is attached to the lathe base for cutting the turning work piece. This cutting means is longitudinally movable along the work piece by a longitudinal moving means. In addition, the cuttingmeans is laterally movable into and out of engagement with the work piece by a lateral moving means as the cutting means is also moved longitudinally. The lateral moving means includes a manual advancing means which is used to incrementally advance thecutting means towards the work piece to an advanced position and an associated mechanical tracer means for tracing a pattern as the cutting means is moved longitudinally. The mechanical tracing means moves the cutting means laterally away from the workpiece from the advanced position according to the pattern so that successively deeper or new cuts are made in the work piece according to the pattern on each longitudinal movement and lateral advance of the cutting means. A computer advancing means anda computer tracer means are also provided for automatically operating the tracer lathe. A selecting means is also provided for selecting between the manual advancing means and the computer advancing means.In the preferred embodiment, the mechanical tracer means includes a longitudinal pattern model, a tracer head which is attached to the cutting means and which moves longitudinally with the cutting means while riding along the pattern model, and aconnection means for moving the cutting means laterally as the tracer head is moved laterally by contact with the pattern model. The pattern

Sliding Banjo Cam Lock For Lathe - Patent 6000447

Patents-434 — Sun, 04 Jul 2010 22:06:44 GMT

shared by: Patents-434 on: Sunday, July 04, 2010

This invention relates to slide rests suitable for lathes.BACKGROUND OF THE INVENTIONLathes are mechanical devices used in the art of carving wood pieces, generally into bowls and other shapes. Lathes are also used for some applications for the moulding of metals. The lathes operate by spinning wood pieces at high velocitywhile the operator carves the piece using a sharp instrument. The usual lathe has a flat horizontal bed with flat horizontal support rails mounted upon the lathe bed. Vertical support members cam connect the support rails to the lathe bed. A motorizedunit for rotating the wood piece normally extends vertically above the lathe bed.When carving a wood piece it is necessary for the lathe operator to make use of a fixed and stable support bar on which the carving instrument is supported while carving the wood piece. Without this support bar it would be impossible for theoperator to have control over the carving instrument while working on the object of manufacture.The support bar is the top member of a toolrest bracket referred to in the art as a banjo. A banjo consists of a horizontal support which is secured onto the support rails of a lathe bed by way of a clamping mechanism. A vertical portion of thebanjo extends upwardly at one end. A top horizontal support bar which is rotatably disposed on the vertical portion of the banjo constitutes the actual toolrest.Current mechanisms for clamping a banjo to support rails provide for poor or difficult clamping. These mechanisms typically consist of a bolt which extends through a slot where the bolt and the slot are both movable by the action of a handlewhich is attached to the bolt and is used to rotate the bolt. Two longitudinal clamps which are closed by the turning of the bolt are used to clamp the banjo to the support rails. A handle may be attached to the bolt either above or below the supportrails. In either case, the positioning is awkward for the carpenter and the clamping effectiveness

Adjustable Violin Peg And Dowel Shaving Device - Patent 4497352

Patents-434 — Sun, 04 Jul 2010 11:34:57 GMT

shared by: Patents-434 on: Sunday, July 04, 2010

This invention relates to a shaving device for violin pegs, dowels, and the like, and in particular to one which is adjustable.Violin peg shaving devices have been in use for hundreds of years. These devices have in the past been of non-adjustable type more suitable for violin making rather than for their repair. Shaving a peg to a fixed size and taper for manufactureby use of a non-adjustable unit is preferred, but in repair or replacement the pegs periodically, throughout the life of the violin, need reshaping or resizing to fit larger worn peg holes. In addition to violin peg shaving, many violins are constructedand or repaired with the use of small tapered or non-tapered dowels. This invention may also be handy around the shop for other dowelling and peg uses such as; for constructing jigs, tools, or even repair of furniture.It is the purpose of this invention to provide an efficient device whereby size and taper are adjustable for shaving violin, viola, and cello pegs, or dowels and the like.The essence of this invention lies in the adjustability of the device, whereby certain embodiments cooperate angularly in their relationship.These and other objects of this invention will become more apparent in the following detailed specification taken with reference to the accompanying drawings.SUMMARY OF THE INVENTIONIn the present invention, a stationary block and a movable block form a vice-like apparatus by means of two guide bolts passing longitudinally through each block in spaced parallel relationship to each other. Headed portions of the guide boltssecure the stationary block to the guide bolts while opposite threaded portions slidably receive the movable block and threadedly engage nuts so that axially advancing the nuts toward the headed portions causes axial movement of the movable block towardthe stationary block.In a side of the stationary block facing the movable block, there is provided a generally V-shaped groove. The groove appears V-shaped in cros

Workpiece Turing And Milling Apparatus - Patent 5333657

Patents-434 — Wed, 30 Jun 2010 07:12:05 GMT

shared by: Patents-434 on: Wednesday, June 30, 2010

BRIEF SUMMARY OF THE INVENTIONThis invention relates generally to wood turning machines and more particularly to a machine for simultaneously turning and milling a workpiece.An ordinary wood lathe having a stationary cutting tool is substantially limited to forming designs in the workpiece which extend around the entire circumference of the workplace. However, to make a longitudinally extending cut in the workpiece(e.g. , for fluting) a milling device is needed. Of course, when fluting the workpiece, the workpiece does not rotate about its longitudinal axis as when turning the workpiece on a lathe, but is held stationary. To form decorative spiral cuts in theworkpiece, the workplace must be rotated as the milling device advances along the workpiece. Precise control of the rotation of the workpiece and the translational movement of the milling device is required to produce a regular design.Apparatus which supports a workpiece for rotation about its longitudinal axis and simultaneously supports a milling device on a carriage for movement longitudinally of the workpiece is shown by McCord, Jr. , U.S. Pat. No. 3,946,774. However,rotation of the workpiece and movement of the milling device carriage longitudinally of the workpiece are manually driven by the same crank. Similarly, Dyer, U.S. Pat. No. 2,455,662 shows a milling attachment for lathes which is moved longitudinallyof the workpiece as the workpiece is rotated. The milling attachment is pulled along by a compound riding on a lead screw attached by gears to the same motor which turns the workpiece. The existing apparatuses require substantial operator control, orrely on a single drive system and complicated and expensive gearing to control the relative speeds of the workpiece and milling device carriage so that they are not readily afforded by someone who does woodworking in his or her own home.Among the several objects and features of the present invention may be noted the provision of apparatus for

Lathe Work Centers - Patent 4398579

Patents-434 — Mon, 28 Jun 2010 07:25:36 GMT

shared by: Patents-434 on: Monday, June 28, 2010

1. Field of the InventionThe present invention relates to devices that hold and center a workpiece about an axis of rotation of a lathe.2. Description of the Prior ArtWood turning lathes typically have a driven tool center at the headstock end, and either a tool center that freely rotates (live center) or a dead center that does not rotate at the tailstock end. The driven center typically has a plurality ofspurs or projections, and in some cases, a conical tip to engage the workpiece. The projections and the conical tip are pounded or forced into one end of the workpiece. The purpose of the conical tip is to center the workpiece while the projectionsprovide a mechanical connection to transmit the driving force from the driven tool center to the workpiece.Dead tool centers normally have an inverted conical ring which engages the workpiece, although dead tool centers have been known to have a central conical tip. Live tool centers, on the other hand, rotate on bearings and have a protrudingconical tip which engages the workpiece. Dead tool centers, since they do not rotate, generate heat from frictional engagement between the tip and the workpiece creating a hole in the workpiece. Lubricants such as bee's wax have been used to reducefriction, but the results have not been satisfactory. Live tool centers, having a sharp conical point, tend to split the wood workpiece when axial pressure is applied to hold the wood workpiece between the tool centers of the lathe.A further problem with the prior art relates to maintaining the same axial center position when the workpiece is removed and reinserted back into the lathe. The projections of the prior art drive centers generally do not re-seat in the sameholes in the wood workpiece that were previously formed, thereby causing the wood workpiece to be off the previous center resulting in difficulties in the wood turning operation.In certain other operations, it is desirable to remove the wood workpiece and reinsert it

Wood Turning Lathe Apparatus - Patent 4372355

Patents-434 — Sat, 26 Jun 2010 13:06:04 GMT

shared by: Patents-434 on: Saturday, June 26, 2010

1. Field of the InventionThe present invention relates to wood turning lathes and more particularly to a lathe having two independent stations at which different shapes may be turned simultaneously.2. Description of the Prior ArtWood turning lathes for industrial use are well known, typical of such lathes being the Diehl TL41 and TL42 automatic hydraulic turning lathes. Such lathes conventionally provide a single station for turning shapes, and it is with respect tothese particular lathes that the present invention constitutes an addition. Other lathe apparatuses are disclosed in U.S. Pat. Nos. 444,799; 1,252,271; 1,168,162; 1,188,850; 2,188,832; 2,828,783 and 3,830,268.SUMMARY OF THE INVENTIONThe present invention relates to a head and tail stock mounting apparatus for use in a lathe mechanism, this apparatus including a supporting block unit having a head stock work center carried for rotation about a given axis but held againstaxial movement. A tail stock work center is rotatable about the same axis but is movable axially by means of a hydraulic power cylinder also carried by the supporting block unit. This power cylinder includes a piston and shaft reciprocably received bya chamber, which define two variable volume compartments within the chamber. The tail stock work center is secured to the shaft reciprocably received by a chamber, which define two variable volume compartments within the chamber. Two ports are providedin the block unit, one for each of the compartments. Pressure fluid may be introduced into and exhausted from said compartments, respectively, for reciprocating the piston and shaft.A two station lathe mechanism has the stock mounting apparatus just described mounted on the frame thereof. A second tail stock work center is mounted on one end of this frame for rotational and axial movement on the same axis and is juxtaposedin spaced relation with respect to the first-mentioned head stock center. A second head stock work center is moun

Sizing Tool For Dowel Ends - Patent 4372356

Patents-434 — Sat, 26 Jun 2010 13:05:58 GMT

shared by: Patents-434 on: Saturday, June 26, 2010

In handcraft manufacture of furniture, or the like, a difficulty often exists in rapidly and accurately sizing the dowel end (the end portion to be accommodated in a hole in an abutting piece) of a workpiece or spindle turning on a lathe. Theworkpiece is usually decoratively formed on the lathe and a dowel end which is under size in diameter, for example, can cause assembly problems in fitting too loosely in standardized dowel holes.Further, the conventional method for sizing a spindle or workpiece on a lathe requires the use of outside calipers in one hand of the operator and a parting tool in the other as the lathe is addressed, a procedure having inherent safety risks andtending to obstruct vision of the work.The tool of the present invention provides for accurately sizing, as to diameter, workpiece or spindle dowel ends as the piece is turning on a lathe. It provides a cutting edge which is adjustably spaced from a reference bar adapted to extend incontiguous, underlying relation to the workpiece turning on a lathe. The tool may be rested on the lathe's tool rest and manually fed into the workpiece to reduce its dowel end to the predetermined, adjusted diameter. In using the tool, the operator'shands may be well back from the turning lathe and vision of the work is unobstructed. BRIEF DESCRIPTION OF THE DRAWINGSFIG. 1 is a side view of the assembled tool of the present invention.FIG. 2 is a perspective view of the tool in use. DESCRIPTION OF THE PREFERRED EMBODIMENTReferring initially to FIG. 1, the hand-held tool may be seen to include a generally triangular plate 10, which may have a thickness of approximately one-fourth inch and, having truncated apices 11, 12 and 13. A handle 14 is rigidly secured tothe plate adjacent apex 13. The apex portion 11 is hollow ground to provide a slight concavity 11a and the sharpened transverse edge 11b.One face of the plate is provided with a relatively wide, rectilinear groove 16 extending from apex 12 to the opposed ba

Duplicating Apparatus With Variable Scale Factor - Patent 4308902

Patents-434 — Tue, 22 Jun 2010 22:32:25 GMT

shared by: Patents-434 on: Tuesday, June 22, 2010

The invention relates to power tools and specifically to duplicating apparatus utilizing a router for producing a work piece which has a geometric shape which is the same as or smaller than a master object. The prior art includes apparatus whichis sold commercially by Sears, Roebuck and Company, Chicago, Ill. Such apparatus is identified as a "router crafter". This apparatus is capable of cooperating with a two dimensional master object to produce a three dimensional work piece. Adisadvantage of this apparatus is that the possible geometric shapes of the work piece are severely limited. Another difficulty with such apparatus is that the apparatus which is presently available does not permit variation in the scale between themaster object and the work piece.It is an object of the invention to provide apparatus which will generate very complex geometric forms such as the "Queen Anne's" furniture legs.It is another object of the invention to provide such apparatus which will be simple and inexpensive to construct.Another object of the invention is to provide apparatus which may be added to existing apparatus in a rapid and simple manner.Still another object of the invention is to provide apparatus which will be safe to operate.Yet another object of the invention is to provide apparatus which will allow for easy variation in a scale factor between a master object and a work piece.SUMMARY OF THE INVENTIONIt has now been found that these and other objects of the invention may be attained in an apparatus for duplicating a master object which comprises a frame, means cooperating with the frame for holding an associated work piece and rotating thework piece about a first axis, and means cooperating with the frame for holding an associated master object and rotating the master object about a second axis. A follower is carried on the pivoting member in spaced relationship from the third axis andthe follower engages the associated master object and pivots the pivoting mem

Lathe Tool And Toolrest - Patent 5224529

Patents-434 — Tue, 22 Jun 2010 06:31:07 GMT

shared by: Patents-434 on: Tuesday, June 22, 2010

This invention relates to a tool and toolrest for use on wood turning lathes, in particular for turning bowls and the like.BACKGROUND ARTAt present, bowls and dishes are produced by gouging or carving out woodchips or shavings from a wooden blank or billet. Typically, the wooden blank is cylindrical in shape and a chisel-like tool is used to gouge out the core of the blankthereby producing a bowl-like object.The toolrest on most lathes comprises an upstanding bar which is adjustable in position relative to the workpiece on which the tool may be freely supported, or steadied, by the turner, or which may provide for limited restraint such as one ormore grooves to locate the tool, or a sleeve in which to slide the tool towards or away from the workpiece.However, a number of disadvantages are associated with the existing methods of removing cores from wood blanks. In particular, in the chiselling method the wooden core is removed from a blank using a chiselling action. This is both timeconsuming, difficult and very wasteful as the core removed is in the form of shavings which cannot be used for further wood turning processes.In another method the core is removed in the form of a cone. However, this is a difficult operation. As the core is removed the cutting tool becomes obscured from view with the danger of kickback if the tool jams. The cone removed is alsowasteful of wood as the wood blank remaining on the lathe contains a conical interior which must then be turned or tooled to provide a cylindrical or rounded interior. The wood removed in this process is also in the form of shavings and so is alsowasteful.Although the cone removed from the blank may then be reused it is necessary to remove the sharp point from the cone so that the cone may be remounted on a lathe and a second wood turning operation performed on it. A sufficiently thick base mustbe left on the blank to avoid damage when the cone is knocked out, which may be undesirable, requiring further turn

Wood Chuck For A Veneer Lathe - Patent 5170824

Patents-434 — Sun, 13 Jun 2010 09:22:02 GMT

shared by: Patents-434 on: Sunday, June 13, 2010

The present invention relates to a wood chuck used to hold logs on a veneer cutting lathe. And more particularly the invention includes a wood chuck having a gripping end for more securely holding the ends of a log and reducing the occurrencesof spin outs, and split log ends.It is well known to support wood logs in a plywood lathe chuck for cutting veneer from the logs from the outer diameter thereof. The ends of the logs are supported by chucks attached to the rotary spindles of the lathe as illustrated in thefollowing patents: U.S. Pat. Nos. 4,141,397; 4,271,881 and 4,342,348.In order to utilize the maximum amount of wood from the logs and use less expensive raw material it is desirable to peel a log down to the smallest feasible diameter. This generally requires that the chuck must be not larger than the smallestdiameter to which the log is peeled. Therefore, because of the small gripping area between the chucks and ends of the log the chucks are not able to securely grip and hold the ends of the log when cutting veneer. That is, the chucks will frequentlysplit the ends of the log, and in many instances "spin out" will occur which is the condition that happens when the chucks lose their grip on the ends of the logs and spin relatively to the logs. Of course, split ends and spin outs delay production,increase expense, and create excess wasted materials.Therefore, the present invention is the provision of wood chucks for use in a veneer lathe that more securely grip the ends of logs and reduce spin outs and splitting of the log ends.SUMMARY OF THE INVENTIONThe present invention is directed to a wood chuck for use in a veneer lathe which includes a chuck body having first and second ends. Releasably fastening means are connectable to the first end for releasably connecting the chuck body to aveneer lathe. The second end of the chuck body includes a plurality of blades extending from the longitudinal axis of the body outwardly to the outer periphery of the

Hand Tool Rest For Forming Curved Surfaces - Patent 4133357

Patents-434 — Sun, 13 Jun 2010 07:40:49 GMT

shared by: Patents-434 on: Sunday, June 13, 2010

This invention relates generally to tool rests for hand held wood turning tools and particularly to a rest which facilitates the turning of curved surfaces.When forming concave or convex surfaces on a wood lathe with a hand held cutting tool and a conventional tool rest having a straight tool rest surface, it is necessary to frequently adjust the rest in order to maintain it close enough to theworkpiece to provide the necessary rigid support for the tool as it is moved along the curved surface. It is particularly important when forming curved surfaces of relatively large radii, such as the forming of the convex and concave surfaces of a woodbowl on the face plate of a lathe, to minimize the overhang of the cutting tool edge from the rest in order to prevent chattering and produce a smooth surface.Accordingly, it is an object of this invention to provide a rest for hand held cutting tools having an arcuate tool rest surface.A further object of the invention is to provide a rest for hand held cutting tools having a horizontal tool rest surface extending through two oppositely curving arcuate surfaces of different curvature.A further object is to provide a rest for hand held cutting tools having a horizontal tool rest bar extending through two oppositely curving arcuate surfaces and having a bevelled tool rest surface extending throughout along one side of the restbar.Other objects and advantages will appear from the following description when read in connection with the accompanying drawing. In the drawing:FIG. 1 is a top plan view of a wood lathe having mounted thereon a tool rest constructed in accordance with the invention;FIG. 2 is a side elevational view of the lathe and tool rest shown in FIG. 1;FIG. 3 is an enlarged plan view of the tool rest shown in FIGS. 1 and 2;FIG. 4 is an enlarged elevational view of the tool rest shown in FIGS. 1 and 2;FIG. 5 is a cross sectional view taken along line 5--5 of FIG. 3;FIG. 6 is a cross-sectional view taken along line 6--6

Wood Lathe Chisel - Patent 4126165

Patents-434 — Sat, 12 Jun 2010 18:40:21 GMT

shared by: Patents-434 on: Saturday, June 12, 2010

The present invention relates to a wood lathe chisel. Objects of the invention are to provide a wood lathe chisel of simple structure, which is inexpensive in manufacture, used with facility and convenience, especially usable by novices andbeginners due to the control of the cutting depth thereof, and functions efficiently, effectively and reliably to divert wood particles cut from a workpiece to a side to prevent such particles from flying into the face and eyes of a user and therebypreventing injury of the user. BRIEF DESCRIPTION OF THE DRAWINGSIn order that the invention may be readily carried into effect, it will now be described with reference to the accompanying drawings, wherein:FIG. 1 is a side view of an embodiment of the wood lathe chisel of the invention;FIG. 2 is a view, on an enlarged scale, of part of the embodiment of FIG. 1;FIG. 3 is a view, on an enlarged scale, of the remaining part of the embodiment of FIG. 1;FIG. 4 is a top plan view of the embodiment of FIG. 1; andFIG. 5 is a perspective exploded view of the coupling between the cutter member and the cutter positioning device of the wood lathe chisel of the invention. DETAILED DESCRIPTION OF THE INVENTIONThe wood lathe chisel of the invention comprises a handle member 1 (FIGS. 1 to 4) having spaced opposite first and second ends 2 and 3, respectively (FIGS. 1 and 4).A cutter member 4, of the type of a wood chisel, for cutting wood, is adjustably mounted in the handle member 1 and extends beyond the handle member at the first end 2 thereof, as shown in FIGS. 1 and 2.A cutter positioning device is provided in the handle member 1 and is coupled to the cutter member 4 in said handle member. The cutter positioning device has a manually operable knurled knob 5 (FIGS. 1, 3 and 4) extending from the second end 3of the handle member 1 for selectively positioning the cutter member 4 relative to the first end 2 of the handle member. The cutter positioning device comprises a rod 6 (FIGS. 2 to 5). The kn

Duplication Attachment For Wood Turning Lathes - Patent 5139060

Patents-434 — Fri, 11 Jun 2010 10:00:30 GMT

shared by: Patents-434 on: Friday, June 11, 2010

The present invention relates to duplicatorapparatus, and particularly to an improved duplicator attachment for turning machines.While the invention is especially suitable for use as a duplicator attachment for a wood turning lathe, features of the invention will be applicable wherever cutting a workpiece to duplicate a pattern is desired.This invention provides improvements in my prior invention described in U.S. Pat. No. 4,588,005, issued May 13, 1986.The duplicator attachments which have been proposed prior to the invention of my patent either mount the cutting tool and tracer elements on a set of perpendicular ways (see U.S. Pat. Nos. 3,204,671 issued Sep. 7, 1965 and 3,277,933 issuedOct. 11, 1966) or incorporate a rotatable section between the perpendicular ways (see U.S. Pat. No. 4,588,005 issued May 13, 1986) or constitute cutter and tracer holders which slide on a table mounted to the bed of the lathe (see U.S. Pat. No.3,768,527). The sliding, or "free foot" duplicator is difficult to use and requires strength to maintain the sliding tool and tracer holder on the table. Free foot duplicators also require the table to be mounted over the bed of the lathe which reducesthe capacity of the lathe, as it relates to the diameter of the workpiece to be cut. The duplicator utilizing perpendicular ways restrict the motion of the cutting tool, and does not permit the operator the freedom and control as in normal freehandturning operations. Moreover, the cutting of interior contours is difficult and impossible for some interior contours, without resetting the cutting tool specifically for the cutting of the desired interior contour. The pattern in many duplicatorattachments as have been proposed must be located below the workpiece, and usually between the workpiece and the bed of the lathe. The pattern and other parts of the attachment therefore restrict the diameter of the workpiece, and does not allow thefull swing of the lathe to be used. The locatio

Wood - PDF

Patents-434 — Fri, 11 Jun 2010 07:34:55 GMT

shared by: Patents-434 on: Friday, June 11, 2010

The invention concerns turning tools used in producing generally cylindrical or tapered workpieces in a lathe and more particularly to tools for producing a patterned or textured surface on the workpiece.As is known, surface finishes of desirable texture or pattern may be obtained by allowing controlled chatter of a lathe tool in its engagement with the workpiece. In general chatter--vibration of a cutting tool or of the work in a machine,caused by insufficient rigidity of either--results in noise and uneven finish of the surface of the workpiece. On the other hand intentional or controlled chatter can be used creatively and selectively to achieve desirable decorative surface textures ona turned object.In a known method of lathe chatter work a conventional tool is held loosely by the lathe operator so as to permit the chatter to occur. But for consistent or sustained successful results considerable skill is required. Alternatively, theworkpiece itself may vibrate while the tool as a whole remains rigid and firmly held. But this second method is applicable only to slender flexible pieces and thus limited in scope.SUMMARY OF THE INVENTIONAccordingly an object of the invention is to provide a lathe tool for chatter work which does not rely for the production of chatter substantially entirely on the control of the lathe operator but which has an inherent or self-contained a chatterproducing nature and which may be used to create chatter work on the non-yielding surfaces of workpieces of a wide variety of shapes and sizes.This object may be realized in an elongated resilient tool working element or blade which is supported extending cantilever fashion from a tool-holder, and which is firmly supported in such an attitude that, upon engagement of the workpiece, thetip of the blade tends to be deflected in a direction away from the workpiece surface and the resilience of the blade in engagement with the surface of the workpiece sets up a vibration in the cantilevered p

Pontoon Bridge With Automatic Height Adjusting And Locking Systems - Patent 5131109

Patents-434 — Fri, 11 Jun 2010 00:45:42 GMT

shared by: Patents-434 on: Friday, June 11, 2010

The present invention relates to aclamped-down bridge comprising a superstructure supported by pontoons, each end of said bridge being fixedly secured to the bottom by means of anchors and anchor cables and clamped down to the expected maximum load by means of sinkers and sink cables,the anchor cables and the sink cables being wound in pairs onto a common shaft in such manner that winding up of the sink cables causes unwinding of the anchor cables, and vice versa.Bridges or loading platforms are previously known, the outer end of which is clamped down to different levels to correspond to the changes in level of a vessel relative to the water surface in loading or unloading, or to stabilise the bridgeagainst heeling moments when the load is uneven. Such bridges are, however, freely floating or provided with complicated means for adjusting and maintaining the bridge at a correct level relative to, for example, a vessel.The object of the present invention is to provide a clamped-down bridge which normally acts as a freely floating bridge but, when loaded or in case of transitory changes of the water level such as when subjected to wave action, is automaticallylocked, and which allows vertical adjustment of the bridge as the water level rises or sinks. This object is achieved by means of a bridge having the features as stated in the characterising clause of claim 1. The invention will now be explainedby means of examples, reference being had to the accompanying drawings in which:FIG. 1 is a top plan view of a bridge according to the present invention, the superstructure being shown merely by dash-dot lines;FIG. 2 is a side view of the bridge shown in FIG. 1;FIG. 3 is an end view of the bridge shown in FIG. 1;FIG. 4 is an enlarged view of part of the bridge, showing an automatic locking device which is included in the bridge shown in FIG. 1;FIG. 5 is a top plan view of the locking device according to FIG. 4;FIGS. 6A-6C illustrate the principle of the function of the lo

Dowel Making Machine - Patent 5127452

Patents-434 — Thu, 10 Jun 2010 15:43:15 GMT

shared by: Patents-434 on: Thursday, June 10, 2010

This invention relates to a machine and method for making dowels and, more particularly, to a machine and method for simply making wood dowels.There is a continuing need in carpentry and related fields for making dowels. It is particularly useful to be able to make dowels of varying sizes and shapes and contours. At the present time dowels are typically available only in fixed shapesand sizes and are produced usually be relatively expensive, complex machinery. This is not entirely satisfactory for those who require specially shaped or sized dowels or desire for some other reason to make their own. For this reason, a number ofdevices have been constructed to permit the hobbyist and others to make their own dowels.One such device is that described in U.S. Pat. No. 4,553,575 issued to Brown. It comprises a stationery cutting tool having an internal bore and a cutting edge at one end of the bore. The cutting tool is held in a vice and a piece of woodstock having a rectangular cross section is driven (rotated) through the cutting edge by a hand held electric drill such that, as the rectangular stock passes through the cutting tool, the dowel is formed. While capable of forming dowels, this device issomewhat awkward to use, dangerous and permits only fixed size dowels to be formed, one for each cutting edge. No variation can be made in the dowel size by way of tapering and the like.Another dowel forming device is that described in U.S. Pat. No. 2,715,924 issued to Norris. This device positions a work piece having a rectangular cross section in an elongated hollow sleeve and rotates the work piece such that the endthereof engages a circular saw blade which cuts the periphery of the work piece, thereby forming the dowel. This device also has many of the limitations of those previously described. It can only form one size dowel; it cannot be not tapered,contoured, and the like.Still another dowel turning device is that described in U.S. Pat. No. 3,234,974 is

Wood Lathe Cutting Tool - Patent 4095630

Patents-434 — Thu, 10 Jun 2010 00:26:09 GMT

shared by: Patents-434 on: Thursday, June 10, 2010

Traditional cutting tools for wood lathes involve the use of a stationary tool rest positioned near one side of the rotating work and the tool is placed on this rest and arranged in a generally horizontal position while being manipulated by thehands. The customary tool crosses the rest and the cutting tool tip or bit is brought into engagement with the rotating work to produce the desired cutting or shaping thereof. The proper use of the traditional wood lathe cutting tool with a tool restrequires a good bit of skill and can, in some situations, be quite dangerous. It is difficult to regulate the amount of cut and if a hard grain area, knot, or crack is encountered, the cutting tool can literally be jerked from the operator's handcausing the risk of serious injury.One of the prime objectives of the present invention is to completely eliminate this hazard and to also eliminate the necessity for the tool rest. The cutting tool of the invention is a bar-like member which is used in a generally verticalposition, rather than horizontally, and rocked or pivoted about its bottom end while such end is engaged with any solid support. Multiple tool bits extend radially from the cutting tool at the elevation of the turning work and can be selectively broughtinto engagement with the work by simply rotating the tool on its longitudinal axis and rocking it about its stabilized lower end or foot. Much greater control of cutting is thereby achieved, and the tool is much safer to use than prior art types.Some examples of the known prior art are shown in U.S. Pat. Nos. 186,701; 850,874; 1,175,283 and 1,478,300.Another important aspect of the invention which the prior art does not provide is much greater freedom in the operation or manipulation of the cutting tool, the tool not being restricted by the customary tool rest. It is also much simpler tochange the cutting profile merely by rotating the tool on its axis to present a different cutting bit. In the customary prior ar

Wood - PDF 2

Patents-434 — Wed, 09 Jun 2010 00:11:57 GMT

shared by: Patents-434 on: Wednesday, June 09, 2010

1. Field of the InventionThe process of this invention is associated with the field of wood-turning technology, specifically as related to the manufacture of wood products comprised in part of cylindroconical rings turned from plywood. More specifically, the procedureof this invention provides an expeditious means for manufacturing strong cylindroconical rings from plywood in a manner which minimizes waste of material.2. Description of the Prior ArtTechniques commonly used for manufacturing cylindrical wood receptacles and other products include use of stave-type construction and the use of lathes to turn such products from wood logs. The use of stave-type construction limits the shape ofthe product to maximum curvatures obtainable by bending and shaping staves. Construction from wood logs or blocks requires extensive lathe time and causes excessive waste of materials.The use of stacked rings of varying diameters is an alternative to use of stave-type or lathe-type construction described above. However, heretofor such rings were usually cut from wood sheets by using a band saw, saber saw or hole cutter. Theuse of a band saw or saber saw requires a wide and uneven saw cut which must be started by drilling or cutting material adjacent to the ring being manufactured, thus spoiling said adjacent material for later use. The use of a hole cutter limitsmanufacture to non-conical rings only.Therefore, it is an object of this invention to achieve an economical and effectve wood-turning process for use in manufacturing strong, concentric, cylindroconical rings which may stacked and glued to form wood products having a wide variety ofannular configurations.SUMMARY OF THE INENTIONIn achieving the object of an economical wood-turning process for making annular wood products from a sheet of wood material such as plywood, a cutting tool is used to cut a generally round piece of said wood material into a plurality ofconcentric, cylindroconical, annular rings. The conical a

Wood Lathe Tool Holder - Patent 4063577

Patents-434 — Tue, 08 Jun 2010 01:47:37 GMT

shared by: Patents-434 on: Tuesday, June 08, 2010

This invention pertains to tool holders for lathes. It pertains particularly to tool holders for wood lathes of the class popular for use in home work shops.Metal lathes almost universally are provided with tool holders used for holding selected knives in selected positions with respect to work being turned on the lathe. This is not the case, however, with most wood lathes, particularly thoseemployed in the home work shop.In the use of such lathes, the cutting tool normally is held by hand. As a consequence, accurate work is difficult to achieve. Also, where a multiplicity of pieces of like pattern, as bannister spindles or candle holders are being produced, itis virtually impossible to make any two of the pieces exactly alike.It accordingly is the general object of the present invention to provide a tool holder for use on home workshop wood lathes which permits positioning the cutting tool accurately with respect to the work.Another object of this invention is the provision of a wood lathe tool holder which is adjustable easily and rapidly in any desired direction - up or down, in or out, angularly, or rotationally.Another object of this invention is the provision of a wood lathe tool holder which mounts the cutting tool accurately and fixedly with respect to the work in the selected position of adjustment.Another object of this invention is the provision of a wood lathe tool holder which is readily adaptable for use on home wood lathes of the various conventional classes, without extensive modification or rebuilding of the lathe.Another object of this invention is the provision of a wood lathe tool holder the use of which makes possible cutting a selected pattern in a multiplicity of work pieces, the pattern so cut in one of the pieces being identical with the patternscut in the remaining pieces.Another object of this invention, is the provisiton of a wood lathe tool holder the use of which simplifies the lathe cutting operation so that a high degree of skill

Contour - PDF

Patents-434 — Wed, 02 Jun 2010 08:33:35 GMT

shared by: Patents-434 on: Wednesday, June 02, 2010

The present invention relates to a contour copying lathe. More particularly this invention concerns an improved method of operating such a lathe and an improved contour model therefore.BACKGROUND OF THE INVENTIONIn the production of furniture parts and the like a model is generally made by hand, and a contour-copying lathe is used to reproduce this model. Such a lathe generally has a bed in which a plurality of workpieces can be rotated about thecoplanar and parallel axes. The model is spanned in the lathe and is rotated about an axis parallel to and coplanar with the workpiece axis. Several arms all pivotal about a common axis transverse to and usually above the rotation axis are all linkedtogether and all have ends engageable with the respective workpiece or with the model. These arms are carried on a carriage which can be displaced parallel to the axis along the bed. The arm engaging the model has at its end a feeler which is usuallyformed as a roller that rides on the surface of the model. The other arms are provided at their ends with tools rotatable about respective axes lying above the respective workpiece rotation axes in a vertical plane passing through the respectiveworkpiece axis. The tool can be a milling head, sanding drum, or the like.In use the model and workpieces are all rotated at the same angular velocity, and the carriage is displaced slowly from one end to the other of the lathe. The end of the model arm is urged, usually simply by the weight of this arm, against themodel so that the end of the other arms are similarly urged against their respective workpieces. Since these other arms are provided at their ends with cutting or shaping tools the workpieces are cut to a shapes corresponding to that of the model. Themodel is usually made of wood, and the workpieces are similarly wooden, but it is not unknown to use such devices for machining synthetic resins or soft metals.In may above-cited copending patent application I describe such an

Chisel Stabilizer For Wood Turning Tool - Patent 4998572

Patents-434 — Wed, 02 Jun 2010 01:12:07 GMT

shared by: Patents-434 on: Wednesday, June 02, 2010

1. Field of the InventionThis invention relates to tools used in wood turning, and more particularly to stabilizers for wood turning cutting tools.2. Description of the Related ArtWood chisels used in wood turning on a lathe typically comprise a flat, elongated bar with a handle at one end and a cutting blade at the other. The cutting blade of the wood turning tool has a shape that is tailored to its particular purpose. For example, a diagonal blade is used for removing relatively large portions of wood material in a slicing manner and is referred to as a skew. A rounded blade is used for finer cutting in a scraping motion and is called a scraper. Regardless of theshape of the cutting blade, the blade is typically beveled. The cutting blade is brought into engagement with the rotating wood, and thereby removes wood material and provides the desired form and surface finish.In use, one edge of the elongated bar portion of the wood turning tool is rested on the tool rest of a lathe as the beveled cutting blade of the tool is moved into cutting engagement with the rotating wood. The approach angle of the tool to thewood may range from straight on, perpendicular to the longitudinal axis, to more angular approaches closer alongside of the wood. Typically, the tool is rotated as it is employed on the wood in order to achieve the desired form and finish. During therotation, the top or corner of the blade may be used as well as the center or middle portion of the blade, and all points in between. That is, the tool may contact the turning wood at any point along the cutting blade. Because of the rotation, thecutting point of the tool is rarely in the same vertical plane as the point at which the flat bar of the tool contacts the tool rest. Because of this vertical misalignment, a twisting torque is generated from the contact of the wood turning tool withthe rotating wood, and this torque must be resisted by the person holding the tool. This can be dangerous, beca

Woodworking Lathe Tailstock Assembly - Patent 4995434

Patents-434 — Tue, 01 Jun 2010 21:15:54 GMT

shared by: Patents-434 on: Tuesday, June 01, 2010

1. FieldThe field of the invention is workworking lathe components, and more particularly such components employed for boring deep holes in elongate workpieces.2. State of the ArtBoring large length-to-diameter holes lengthwise into slender wooden workpieces with a high degree of straightness and directional control has long been regarded as very difficult. Generally, such long small holes are employed in dimensionallyuncritical bulky objects, where crookedness and erratic direction is not objectionable. For lathe turned products, the workpiece is commonly gripped cantilevered from its head end from a chuck mounted in the lathe headstock.An appropriately sized drill bit is installed, also cantilevered, in a chuck mounted on a sliding shaft carried by the lathe tailstock. The shaft is urged toward the headstock, pressing the cutting end of the bit into the projecting end of theworkpiece. Since both the workpiece and the drill bit are only gripped at one end, both are subject to deflection during the drilling operation. The locations of the drill bit and the workpiece could be exchanged, with the latter being urged againstthe former as it rotates. However, the same shortcomings exist. These methods work well for spool spindle holes, wheel axle bores, and other short bores, but are unsatisfactory for long slender bores, requiring long slender drill bits, especially whenthe workpieces are similarly proportioned, as often is the case. Limberness of both workpiece spindles and bits, always aggravated by deflection of the latter by variations in wood grain direction and hardness, combine to generally prevent the drillingof reasonably straight, accurately directed, small deep bores. Examples include the small diameter deep holes required in turned writing pen barrels, upstanding lamp posts and the like.BRIEF SUMMARY OF THE INVENTIONWith the foregoing in mind, the shortcomings and disadvantages in prior art apparatus and methods for center boring long slender wood

Lathe Attachment Duplicating Device - Patent 5065801

Patents-434 — Mon, 31 May 2010 18:14:33 GMT

shared by: Patents-434 on: Monday, May 31, 2010

1. Field of the InventionThis invention relates to a duplicating device for use on a lathe.2. Discussion of the Prior ArtWhile the device of the present invention was specifically designed for reproducing wooden spindles or the like, it will be appreciated that the device can be used to reproduce other wooden and even metal products on a lathe.At present, the only types of duplicators for use with lathes are expensive computer guided or mechanically guided duplicators. The inventor is aware of no commercially available devices for duplicating a previous turned article such as aspindle or the like which provide accurate visual guidance, or any guidance allowing the operator's skills and existing turning chisels to be used to the fullest. Existing mechanically guided duplicators at the bottom end of the price scale generallywill not produce a furniture quality spindle by themselves and therefore require final touch-up using conventional chisels and/or extensive sanding.The object of the present invention is to provide a solution to the above identified problem in the form of a relatively simple duplicating device, which is easy to install and use on a lathe.GENERAL DESCRIPTION OF THE INVENTIONAccordingly, the present invention relates to a duplicating device for use on a lathe comprising frame means for mounting behind the centerline defined by a live center and a tailstock center of a lathe; mirror means on said frame means extendingparallel to the centerline of the lathe in the use position; and template carrier means on said frame means between said mirror means and the centerline in the use position. BRIEF DESCRIPTION OF THE DRAWINGSThe invention will be described in greater detail with reference to the accompanying drawings, which illustrate a preferred embodiment of the invention, and wherein:FIG. 1 is a schematic, plan view of a lathe and a duplicating device in accordance with the present invention;FIG. 2 is a schematic, front view of the lathe and duplica

Device For Opening Inner And Outer Pontoons Of A W-shaped, Unfoldable Pontoon Unit Consisting Of Two Inner Pontoons And Two Outer Pontoons - Patent 4962557

Patents-434 — Mon, 31 May 2010 00:35:17 GMT

shared by: Patents-434 on: Monday, May 31, 2010

The present invention relates in general to devices for opening the inner pontoon and the outer pontoon of a pontoon unit consisting of two inner pontoons and two outer pontoons. The arrangement opens into the shape of a W such that the outerpontoons are attached to the adjoining inner pontoons pivoted on hinges. The hinges are formed by two pins, each pin arranged in the adjoining corners of the inner pontoon and the outer pontoon. They are connected by a lever pivoted about the pins. The lever has parts projecting over the pins and extending in the longitudinal direction of the lever. A tensioning spring is attached to the outer pontoon and acts on the end of part of the lever which end faces the outer pontoon. The lever is locatedin a free space below the pontoon deck of the inner pontoon and in a free space under the pontoon deck of the outer pontoon in the open state of the inner pontoon and the outer pontoon. The movement of the inner pontoon and the outer pontoon in theopened and collapsed states is limited by stops provided on the inner pontoon and the outer pontoon, the stops acting on the lever.West German Preliminary Published Patent Application No. 34,06,392 discloses a device of the same class for opening a pontoon unit for forming a pontoon bridge, in which two inner pontoons and two outer pontoons are connected with hinges suchthat they can be opened in a W-shaped pattern and in the collapsed state, the two inner pontoons are connected to a top middle hinge and the two outer pontoons are joined to the adjoining inner pontoons by a lower hinge each. The lower hinge is formedby two pins which are arranged in the adjoining corners of the inner pontoon and outer pontoon. The pins are connected pivotably by a projecting lever, and the freedom of movement of the projecting ends of the lever can be limited by stops. The end ofthe lever facing the outer pontoon is connected to a tension spring.The outer pontoons of the W-shaped collapsible pontoon un

Hand-held Turning Tool System - Patent 4924924

Patents-434 — Sat, 29 May 2010 06:42:21 GMT

shared by: Patents-434 on: Saturday, May 29, 2010

The invention concerns tools for turning, and especially tools for fashioning deep and/or hollow work in materials such as wood, plastics, soft metals and alabaster.In recent years there has been a resurgence of interest in the art and craft of wood turning, including a particular interest in producing larger vessels of both the "deep" and "hollow" types. Usually the term deep refers to a cavity theinternal diameter of which decreases progressively from the mouth to the bottom of the cavity. A simple example is an open cone. The term hollow refers to vessels in which there is at least one internal chamber with a mouth or entrance of smallerdiameter than the maximum internal diameter of the chamber. A simple example is a sphere with a circular opening.Two of the problems facing the turner desiring to fashion deep or hollow vessels significantly larger than those feasible and economical with conventional tools, are the volumes of material to be removed and the much greater reach of toolrequired. Typically these attempts at larger vessels have been made using somewhat makeshift adaptations of conventional methods and tools. The conventional way of removing redundant material is by comminution (reducing all of the material to shavingsor sawdust) for example with a gouge tool. The rough forming of an extra large vessel in this way can be very laborious, time consuming and wasteful of the raw material. (Doubling the principal dimensions of a vessel increases its volume and hence thevolume of material to be worked eight times.)The second problem is the control of tools at the greater reaches involved in fashioning the inside of larger vessels. With the cutting edges of the tool more remote from the tool rest it becomes more difficult to control the tool for accuratework. A simple lengthening of the tool handle may help in holding the tool against the greater leverage resulting from increased tool reach. But typically no provision is made for holding the tool aga

Duplicating System For A Lathe - Patent 4899793

Patents-434 — Fri, 28 May 2010 00:50:10 GMT

shared by: Patents-434 on: Friday, May 28, 2010

The present invention relates to methods for making duplicate parts during lathe turning operations and, more particularly, for a system attachable to a multipurpose woodworking tool for holding a pattern and cutting a duplicate part in a latheturning operation.A lathe typically includes a headstock having a motor-driven quill spindle and drive center for engaging the end of a workpiece, a tailstock having a center for engaging an opposite end of a workpiece, a tool rest for supporting a tool, and aframe for supporting the headstock, tailstock, and tool rest. This type of lathe, in which the workpiece is held between centers, is used to perform "spindle turning" to make such items as legs for tables, chairs, and beds. Lathes are also used to turnbowls, goblets, and the like in a procedure called "face plate turning". In this procedure, the pointed centers are removed from the headstock and tailstock, and the headstock drive center is replaced with a disc-shaped face plate which is screwed to ascrap block that, in turn, is removably attached to the workpiece to be turned.It is frequently necessary to turn a large number of identically-shaped pieces on a lathe, and such an operation is performed most efficiently by the use of a lathe duplicator. A lathe duplicating system is shown in the Hochstatter et al. U.S. Pat. No. 4,256,155, and includes a frame having a motorized headstock, displaceable tailstock, and a horizontal table extending between the headstock and tailstock. A cutting tool is mounted on a tool holder that is freely slidable on the table. Thetool holder also includes a follower which engages the contours of a model supported by brackets mounted on the table. The brackets include a clamp which is adapted to engage a flat template, and may be modified to receive bracket extensions havingspindles for holding a three dimensional model to be duplicated.In operation, the pattern to be duplicated--in the form of a flat template or a three-dimensional mo

Woodturning Tool Having Circular Opening - Patent 4754787

Patents-434 — Sun, 23 May 2010 19:19:46 GMT

shared by: Patents-434 on: Sunday, May 23, 2010

This invention relates generally to woodturning and, in particular, to a hand-held tool for use in the shaping of a timber workpiece into an article on awoodturning lathe. The tool is applicable in the woodturning of hollow-ware articles such as bowls, goblets, canisters and other containers, and it will be convenient to hereinafter describe the invention in relation to that exemplary application. Itis to be appreciated, however, that the invention is not limited to that application and may be equally applicable to other articles, for example, spindle-ware such as furniture legs.BACKGROUND OF THE INVENTIONA large range of woodturning tools are available for shaping pieces of timber into hollow-ware articles. Those tools include cutting tools such as chisels and gouges as well as scraping tools such as scrapers, and are variously shaped to permitrapid rough cutting and scraping followed by more careful fine surface finishing of timber in order to form a smooth hollow-ware article quickly.In using these tools a cutting edge is usually pushed into the timber fibres to force their severing and, particularly in end-grain hollowing of timber, that pushing occurs against or across the fibre grain. Whilst a fine surface finish can beachieved, it does require considerable expertise and concentration on the part of the toolturner in order to minimise ragged tearing of the timber fibre or more serious timber gouging. As such, fine finishing can be difficult to achieve and indeedarticles can be severely damaged during that finishing, particularly by inexperienced woodturners.In addition, existing cutting tools fine finish article hollows most effectively when a trailing corner of the tool cutting edge is very close to the timber surface being cut. Unless considerable care is exercised that trailing corner thetimber. That can result in irreparable damage to the timber. Moreover, the tool can react violently causing it to be wrenched from the control of the woodturner wit

Rotary Spindle Former - Patent 4848422

Patents-434 — Sun, 23 May 2010 13:48:26 GMT

shared by: Patents-434 on: Sunday, May 23, 2010

This invention relates to rotary apparatus for forming spindles of various shapes and configurations.BACKGROUNDIt is common practice to employ lathes and cutting tools such as chisels to form shaped spindles such as table and chair legs, candlestick holders, balusters, lamp and flag standards, and the like. When it is desired to duplicate configurationsfrom piece to piece, wood turning duplicators are often used in conjunction with the lathe.While the combination of a lathe, chisel, and a wood turning duplicator accomplishes the desired job, the cost of such equipment is not insignificant. Furthermore, even when exercising considerable care in conducting such turning operations, aconsiderable amount of drag and chatter is frequently encountered as between the stationary cutting tool (e.g., chisel) and the rotating stock. And, in order to make use of a duplicator, rounded or cylindrical stock must be employed--it is not feasibleto conduct the turning operation with stock having sharp edges, such as square stock or the like.A desirable and worthwhile contribution to the art would be a way of reproducing in turned pieces the same configuration from piece to piece without need for such expensive equipment as lathes and duplicators and without encountering thedifficulties and limitations inherent in the use of such equipment. This invention is believed to fulfill this need in an efficient and economical manner.SUMMARY OF THE INVENTIONIn accordance with this invention, novel spindle forming apparatus is provided which, among other things, makes effective use of the force of gravity to insure replication from piece to piece. The apparatus can utilize workpieces having any of awide variety of cross-sectional shapes--the workpieces need not be cylindrical or have rounded edges to start with. Spindles having a wide range of configurations and shapes may be readily produced, workpiece breakage is rare, no cutting tool drag orchatter is encountered during use, and prior e

Duplicator Attachment For Woodturning Lathes - Patent 4588005

Patents-434 — Fri, 02 Apr 2010 10:53:18 GMT

shared by: Patents-434 on: Friday, April 02, 2010

DESCRIPTIONThe present invention relates to duplicator apparatus, and particularly to an improved duplicator attachment for turning machines.While the invention is especially suitable for use as a duplicator attachment for a woodturning lathe, features of the invention will be applicable wherever cutting of a workpiece to duplicate a pattern is desired.The duplicator attachments which have been proposed either mount the cutting tool and tracer elements on a set of perpendicular ways (See U.S. Pat. Nos. 3,204,671 issued Sept. 7, 1965 and 3,277,933, issued Oct. 11, 1966) or constitute cutterand tracer holders which slide on a table mounted to the bed of the lathe (See U.S. Pat. No. 3,768,527 issued Oct. 30, 1973). The sliding duplicator is difficult to use and requires strength to maintain the sliding tool and tracer holder on thetable, as well as an experienced operator to avoid breakage of parts and pattern and to maintain personal safety, since there is no restriction on the forces applied to the sliding holder from the workpiece as it revolves. Sliding duplications cannot beused on many lathes, such as multifunction (e.g., Shopsmith) type machines, because the carriage is in the way and prevents the table from being mounted to the bed. The duplicators utilizing perpendicular ways restrict the motion of the cutting tool,and do not permit the operator the freedom and control as in normal freehand turning operations. Moreover, the cutting of interior contours is difficult and impossible for some interior contours, without resetting the cutting tool just for the cuttingof the interior contour. The pattern in many duplicator attachments as have been proposed must be located below the workpiece, and usually between the workpiece and the bed of the lathe. The pattern and other parts of the attachment therefore restrictthe diameter of the workpiece, and does not allow the full swing of the lathe to be used. The location of the pattern on attachments using w

Expandable Woodturning Chuck - Patent 4541465

Patents-434 — Thu, 01 Apr 2010 15:08:30 GMT

shared by: Patents-434 on: Thursday, April 01, 2010

The present invention relates towoodturning and, in particular, to an expandable woodturning chuck for use in faceplate turning on a wood turning lathe."Faceplate turning" is the expression used for the turning of wood articles such as fruit bowls from a solid piece of wood. This activity involves screwing onto the threaded end of a lathe spindle, a correspondingly internally threaded boss of afaceplate. The faceplate normally consists of a metal disc having an outwardly facing annular flange provided with a plurality of screw holes.In order to secure the roughly cylindrical blank from which the fruit bowl, for example, is to be turned, screws are passed through the screw holes in the faceplate and into the blank. This method of securing the blank to the faceplate has theadvantage that the blank is securely held to the faceplate. However, this method of securing the blank to the faceplate has the disadvantage that a number of unsightly holes are left in the base of the finished object. In addition, if the object mustbe removed from the lathe during the turning, the screws do not generally permit the job to be accurately re-centred on the faceplate. This latter disadvantage is a substantial disadvantage in the teaching of woodwork since each student normally has hisworkpiece secured to a lathe in turn so that all workpieces go through a similar processing stage in sequence.An alternative method of securing the workpiece to the faceplate is to secure a wooden plate to the workpiece, preferably with a sheet of suitable paper, glued on both sides, interposed between the plate and the workpiece. In this way, holes inthe base of the workpiece are avoided, but the slightest undue lateral pressure when turning may well disengage the plate and workpiece. Again, it is nearly impossible to accurately re-centre the workpiece once it has been removed from the wooden plate.In order to overcome the above mentioned difficulties and provide a means of securing a workpiece to

Duplicating Attachment For Lathe - Patent 4527602

Patents-434 — Thu, 01 Apr 2010 08:09:46 GMT

shared by: Patents-434 on: Thursday, April 01, 2010

Home workshops are sometimes equipped with turning lathes having multiple utility for the hand craftsman. Because of the general expense and complexity of duplicating equipment, most home workshops are not equipped with any type of copyingapparatus for precisely duplicating existing turnings or specific patterns. Consequently, the time honored and laborious process of starting, turning, cutting, stopping, and measuring in a trial-and-error type cycle, has served the home handyman as wellas the professional wood and metal workers.Complex linkages, drive mechanisms, and mechanical components make existing duplicating tools quite expensive and over-complicated for common, non-industrial use. Moreover, the availability of a simple and relatively inexpensive attachment forsimple lathe equipment which is also accurate and dependable is virtually nonexistent in the present state of the art to the best knowledge of applicant.SUMMARY OF THE INVENTIONThe copying attachment for turning lathes of the present invention is characterized by a simple assembly which combines a motor driven rotary cutting tool or saw with a feeler element which traces the profile of the model or template. As thefeeler element contacts the template, and moves along the exact contour of the model to be duplicated as it traces two dimensions of the template face, the cutting tool moves to the exact dimension as does the feeler element. As the cutting tool movesin concert with the feeler element, the cutting edge of the said cutting tool contacts a length of rotating stock which exactly duplicates the model.It is, therefore, an object of the present invention to provide a simple duplicating attachment for any complexity level of metal or wood working lathes.It is further an object of the present invention to make a more accurate and a better quality reproduction of a model or pattern by using a rotating cutting blade rather than a stationary tool in conjunction with the rotating stock.It is further

Safety Tool Rest - Patent 4502517

Patents-434 — Wed, 31 Mar 2010 20:37:00 GMT

shared by: Patents-434 on: Wednesday, March 31, 2010

The present invention relates generally to lathes, and more particularly to a safety tool rest for a lathe.BACKGROUND OF THE INVENTIONWhen using a lathe, particularly a wood turning lathe, it is a common practice to place the woodworking tool against a rest located adjacent the workpiece. Typical of these rests is the rest disclosed in U.S. Pat. No. 1,240,474 (Moore et al). The tool rest disclosed in this patent includes an upper edge which is placed adjacent the workpiece and on which the tool rests. The position of the upper edge is adjustable and positionable along the length of the workpiece. However, it has long beenrecognized that when using a hand tool, there is a danger that the hand tool will be flipped about the upper edge of the tool rest due to too great an engagement with the workpiece. In order to prevent this problem, a tool holder having a cantileveredarm from which an adjustable stop projects has been disclosed in U.S. Pat. No. 2,913,019 (Sprague). This tool holder also has a slot in which the tool rests and any flipping motion about this rest is prevented by the stop.A wood lathe cutting tool in which the tendency of the tool to flip is substantially eliminated is disclosed in U.S. Pat. No. 4,095,630 (Kirk et al). This tool has the turning force of the workpiece directed substantially perpendicular to aholding base located beneath the workpiece. A relatively flat and long work rest is disclosed in U.S. Pat. No. 850,874 (Tripp).There are also disclosed in the prior art a number of tool work holders in which the tool is securely attached to a tool rest. Generally, the tool workholder is mechanically adjustable relative to the workpiece. Typical of such tool holders arethose disclosed in the following U.S. patents: U.S. Pat. No. 1,036,257 (Kacsmarik); No. 988,630 (Diederich); No. 4,063,577 (Tennant); No. 839,752 (Guenzler); and No. 182,762 (Kinney).SUMMARY OF THE INVENTIONA safety tool rest for a lathe on which a workpiece is rotat

Wood Lathe Tool - Patent 4284111

Patents-434 — Fri, 26 Mar 2010 19:15:06 GMT

shared by: Patents-434 on: Friday, March 26, 2010

1. Field of the InventionThe present invention relates to a tool for use in wood working machines such as lathes.2. Prior ArtA cutting tool for cutting grooves in the rubber rollers is shown in U.S. Pat. No. 3,985,049. The tool consists of a generally "squared" bottom U shaped cutting blade that has a planar or flat end wall with a sharp edge at the closed end ofthe U, and which is mounted so the end wall acts as a scoop. It is designed to cut helical grooves in a rubber roller. The blade is supported by fastening the planar portions of the side legs of the U to a support. It should be noted that a type ofdepth regulator is provided for the blade, but it is not used as a support and guard for the blade which also helps to stabilize the blade.The use of depth regulating devices for lathe cutting tools is shown in U.S. Pat. No. 4,126,165. However in this patent the lathe cutting tool itself is an ordinary chisel type tool. The assembly has an adjustable gage member that aids inkeeping the cutting blade from penetrating too deeply. Additionally, U.S. Pat. No. 1,991,051 illustrates a duplicating tool for use in lathes or the like, which has a cutting tool formed from a tube, and which includes an overlying depth controlmember having a rounded end generally shaped to correspond to the tube. The tube has a rounded cutting edge that is used for engaging the work. The mounting of the tool is also along the planes of the side legs and there is no chip deflector nor aguard overlying and aiding in reinforcing the cutting blade.U.S. Pat. No. 2,986,177 shows a type of a wood working lathe tool which has a trough that deflects wood chips upwardly and which can be used in connection with a tool rest. This tool also has a member that tends to limit the amount ofpenetration of the tool. The tool has a rounded forward edge as shown in FIG. 11 of the patent, as well as other configurations shown in the patent, but it does not comprise a flat blade bent into a gene

Spindle Turning Tool - Patent 4266583

Patents-434 — Fri, 26 Mar 2010 10:56:56 GMT

shared by: Patents-434 on: Friday, March 26, 2010

The present invention seeks to improve on the utility of the wood lathe cutting tool disclosed in U.S. Pat. No. 4,095,630. In that patent, a unitized rigid bar-like tool or holder for a cutting bit unit has a rocker foot extension whereby thefar end of the tool can be grasped and rocked in a vertical plane toward and from a rotating workpiece in a wood lathe.A problem encountered with this type of turning tool is that the bit holder is necessarily small and therefore difficult to grasp and hold in contact with a grinding or sharpening stone. To overcome this problem, the present invention seeks toprovide a cutting bit unit or holder particularly useful in turning wooden spindles which is constructed for versatility of use on the same type of tool disclosed in the above prior patent and also having means whereby the cutting bits can beconveniently and firmly held against the grinding stone to sharpen them periodically.More particularly, in accordance with the invention, a comparatively thin disc body is diametrically grooved across one end face to receive in the groove a pair of differently profiled spindle turning bits which may be held in place by brazing orthe like. Between the two bits at the center of the disc body, an axial threaded opening is formed therethrough to accept a bolt by means of which the bits can be held in firm contact with a grinding wheel to sharpen them while the disc body isseparated from the bar-like wood lathe cutting tool. The threaded opening in the disc body also receives the securing rod of the wood lathe cutting tool during the use of the invention for turning spindles and the like. The arrangement is highlyconvenient, efficient and economical and renders the tool in the above-referenced patent considerably more useful without any increase in its manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGSFIG. 1 is a perspective view of the invention illustrating its use.FIG. 2 is an enlarged perspective view of a spindle turning bit h

Wood Lathe With Duplicating Means - Patent 4256155

Patents-434 — Fri, 26 Mar 2010 05:50:42 GMT

shared by: Patents-434 on: Friday, March 26, 2010

This invention relates to relatively inexpensive wood lathes for the home workshop which include means for duplicating existing turned articles and producingturned articles in accordance with flat templates.THE PRIOR ARTThere are numerous prior art patents disclosing wood lathes or attachments therefor by which duplicates of existing turned articles or turned articles in accordance with flat templates can be made. In these prior devices, as exemplified in thedisclosures of U.S. Pat. Nos. 2,769,466 to Brauneis, 2,880,767 to Rodgers, and 3,204,671 to Schoenrock, the cutting tool is constrained by guide means to move linearly in two finite relatively perpendicular paths and in some instances rotationallyabout a fixed axis to facilitate undercutting.There is, however, a need for a wood lathe of simplified and inexpensive construction for the home workshop with which an operator of average skill may duplicate with acceptable fidelity an existing turned article or produce turned articles inaccordance with the contour of a flat template. The U.S. Pat. No. 3,768,527 to Messick discloses a simplified and less expensive means adaptable for attachment to a conventional lathe in which the lathe ways have a flat upper surface on which anextensive platform 40 is mounted. In the Messick arrangement, a tool holder having a flat base 90 of extensive area and a follower thereon is freely slidable in any direction on a flat horizontal surface of platform 40 to follow the contours of anexisting turned article or flat template.The platform 40 in Messick on which the tool holder 90 slides is, however, adapted for mounting on lathe ways having a flat surface and would not be adaptable for mounting on a currently popular home workshop lathe having a single tubular way. Also, it is necessary to remove the platform 40 to permit sliding adjustment of the tail stock 20 on the ways 14 or the sliding adjustment of a conventional tool holder or tool rest mounted thereon when operating the

Replication Apparatus - Patent 4227557

Patents-434 — Thu, 25 Mar 2010 02:26:16 GMT

shared by: Patents-434 on: Thursday, March 25, 2010

The present invention relates generally to an apparatus for replicating three-dimensional articles, and more particularly to an arrangement for precisely replicating such articles for end use as gun stocks or components of furniture. Theapparatus includes a cutter head which is movable both laterally and transversely of the device, and further means are provided for adjustably tilting the cutter head and stylus so as to achieve a full degree of flexibility and freedom for working thecutter head.It is frequently desirable to replicate articles of manufacture, such as, for example, gun stocks, components of furniture, and the like. These articles are, to a certain degree, perishable, and it is economically desirable to replace theperishable components so as to restore the article to a usable condition. Examples of such articles are, for example, guns such as sporting rifles which normally utilize a wooden stock, with the stock being subject to deterioration and damage at a ratesignificantly greater than the balance of the rifle. For various articles of furniture, for example, components such as arms, legs, or other members may be broken and the article of furniture may be salvaged if the broken member is replaced. Theapparatus of the present invention is particularly adapted for replication of three-dimensional articles on a highly conforming and sound basis.Apparatus for replicating three-dimensional articles have been known and utilized in the past. Frequently, however, these devices have been extremely cumbersome and the ordinary skilled artisan utilizing these devices has significant difficultiyin accurately replicating the article on a reliable and conforming basis. As such, articles prepared therefrom, such as gun stocks may not represent the predecessor article and as such, find limited application, particularly where accuracy is required. Furthermore, prior devices for replicating three-dimensional articles have frequently been cumbersome to utilize, an

Wood turning tool - Patent 4200129

Patents-434 — Tue, 23 Mar 2010 20:30:47 GMT

shared by: Patents-434 on: Tuesday, March 23, 2010

BACKGROUND AND SUMMARY OF THE INVENTIONThe present invention relates to improvements in wood turning tools and in particular to a completely hand mobile device that is capable of producing accurate pattern duplication and yet is simple in design, convenient to use, and inexpensive tomanufacture.Small lathes are a very versatile and relatively inexpensive tool for the hobbyist and craftsman. A wide variety of auxiliary wood turning tools have been developed for use with such lathes. However, these prior art devices are generally quitecomplex and frequently as expensive as the lathe itself. In addition, these devices generally require intricate mounting structures to which the tools must be rigidly secured to insure accurate tracing capabilities. Moreover, the position of the cutterin prior art tools is typically fixed relative to the centerline of the lathe which precludes adjustments for different types of stock.Accordingly, one object of the instant invention is to provide an inexpensive hand mobile wood turning tool which cuts above the centerline of the stock workpiece and is angularly related to the horizontal so that the cutter attacks the workpieceat an acute angle to preclude tearing of the stock and generally produces an improved, smoother cut.Another object of the invention described herein is to provide a hand mobile cutting tool which can perform many different cutting effects, such as alternating cutting edges without changing the cutter and skiving of the stock workpiece.A further object of this invention is to provide a hand mobile tool which maintains its stability even as wood chips build up on the work table surface, thus retaining the alignment between the cutting and tracing means. The base of the presentinvention is firm, steady, and self-wiping while at the same time allowing for complete and easy hand mobility.Yet another object of the instant invention is to provide an extremely safe wood turning tool. Certain prior art devices have a te