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Publication numberUS3599961 A
Publication typeGrant
Publication dateAug 17, 1971
Filing dateMay 19, 1969
Priority dateMay 19, 1969
Publication numberUS 3599961 A, US 3599961A, US-A-3599961, US3599961 A, US3599961A
InventorsMorgan Lester A
Original AssigneeMorgan Lester A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Means providing a holding device
US 3599961 A
Abstract  available in
Images(2)
Previous page
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Claims  available in
Description  (OCR text may contain errors)

United States ?atent Lester A. Morgan 28 W. Main St., New Palestine, Ind. 46163 825,669

May 19, 1969 Aug. 17, 1971 Inventor Appl. No. Filed Patented MEANS PROVIDING A HOLDING DEVICE 12 Claims, 10 Drawing Figs. U.S. Cl 269/275, 24/263 R, 248/316 Int. Cl B25b 1/02, B25b 1/24 Field of Search 269/271,

273, 274, 275, 277, 278, 317; 24/262, 263, 263 HW, 263 LL, 263.5 D, 263 LS, 263.3, 263.4, 263

SB; 248/316 A; 21 1/41 [56] References Cited UNITED STATES PATENTS 303,647 8/1884 King 269/278 x 2,346,706 4/1944 Stoner. 279/46 2,796,787 6/1957 Aske 269/274 3,107,716 10/1963 Wehmeyer. 269/274 X 3,236,516 2/1966 Young 269/252 Primary ExaminerAndrew R. .luhasz Assistant ExaminerDonald D. Evenson Attorney- Hood, Gust, Irish, Lundy & Coffey ABSTRACT: A holding device comprising first and second generally parallel rigid plates and a pad of resilient material sandwiched between the plates, the plates being bonded to opposite sides of the pad. Thus, the plates are resiliently connected for slight relative movement. One of the two plates may be split into at least two portions, each of which is resiliently connected to the other plate. The two portions provide jaws for gripping parts.

PATENTEUAuamsn 3,599,961

SHEEI 1 (1F 2 Fig. 2

VENTOR LEST A. MORGAN ATTORNEYS PATENTED AUG! 7|97| 3,599,961

sum 2 OF 2 INVENTOR. LESTER A. MORGAN MEANS PROVIDING A HOLDHNG DEVICE It is a primary object of my invention to provide means which can readily be formed into a holding device and a method for forming a holding device.

It is my concept to provide mill lengths of a composite bar tomachine shops and factories, which composite bar can be cut into small sections as desired and each section can then readily be converted into a holding device having desirable properties. My preferred composite bar includes a first metal bar or strip of metal, a second metal bar or strip of metal, the first bar being parallel to the second and superposed relative thereto. These two bars are held together by a flat strip of resilient material, such as neoprene. Specifically, the strip of resilient material is sandwiched between the bars and the facing surfaces of the bars are bonded to the opposite sides of the strip. When a section of the composite bar is cut off, the section comprises a first rigid plate, a second rigid plate, and a pad of resilient material sandwiched between and bonded to the plates. Because of the resiliency of this pad between the plates, the plates are resiliently connected for slight relative movement. Generally, if one of the plates is held rigidly, the other plate can be shifted slightly in a plane which is generally parallel to the rigidly held plate. The amount which one plate will move relative to the other plate depends, of course, on the thickness and the nature of the resilient pad sandwiched between the plates.

I have discovered that the composite bar of my invention can be readily and easily cut into sections and that each section can then be readily and easily converted into a holding device by simple machining operations. The holding devices produced with the composite bar utilize the resiliency of the pad sandwiched between the plates of a section of the bar.

The method of my invention, therefore, comprises the steps of providing such a composite bar including a pair of elongated, parallel and superposed rigid bars with an elongated resilient strip sandwiched between the bars and bonded to the facing surfaces thereof, cutting the composite bar to the desired length to provide a section thereof, cutting one of the rigid bars of the section into at least two portions, each of which is resiliently movable relative to the other portion and relative to the other rigid bar of the section. The method may further include the step of cutting the one rigid bar to provide a socket for receiving a part and so that each of the portions provides a perimetral portion of the socket. This method will be more fully discussed as this description progresses.

In this description and in the claims appended hereto, the terms rigid plate" and bars are to be considered synonymous. That is, the holding device of my invention comprises at least two rigid plates or two rigid bars between which a resilient pad is sandwiched. Further, the terms-a pad of resilient material is to be considered as any type of rubber or rubberlike pad or strip. Still further, the term bonded is to be considered as any type of connection between a rigid member, such as a metal bar, and a resilient member, such as a rubber or rubberlike pad.

To the accomplishment of the above and related objects, my invention may be embodied in the forms illustrated in the accompanying drawings and described herein, attention being called to the fact, however, that the drawings and description are illustrative only, and that change may be made in the specific constructions illustrated and described or in the specific steps stated, so long as the scope of the appended claims is not violated. In the drawings:

FIG. l is a fragmentary perspective view of the composite bar of my invention;

FIG. 2 is a perspective view of a simple holding device constructed from the bar of FIG. I;

FIG. 3 is a fragmentary elevational view of the holding device of FIG. 2 disposed in a conventional vise;

FIG. 4 is a sectional view of a holding device similar to that shown in FIG. 2, except that the part is gripped and snugly held between two portions of the resilient pad;

FIG. 5 is an elevational view of another holding device showing the manner in which the device may be formed to hold irregularly shaped parts;

FIG. 6 is an elevational view of another holding device which is proportioned and arranged to serve as a resiliently expansible gripper;

FIG. '7 is a perspective view of a holding device utilizing threaded means for drawing its jaws together;

FIG. 8 is a perspective view of another holding device which utilizes threaded means for drawing its jaws together;

FIG. 9 is a perspective view of a holding device, the jaws of which are formed to engage an irregularly shaped sheet metal part; and

FIG. 10 is a perspective view of a holding device which is proportioned and arranged to hold cylindrical objects.

Referring now to the drawings, and particularly to FIG. 1, it will be seen that I have illustrated a section of a composite bar 10 comprising an upper bar 12 and a lower bar 14 and a resilient strip 16 sandwiched between the bars. This composite bar 10 will preferably be provided in mill lengths. The bars 12 and 114 are elongated and fiat and parallel with the upper bar 12 being superposed above the lower bar 14. The resilient strip 16 is likewise elongated and flat and preferably of the same width as the upper and lower bars 12 and 14. The bar 14 is bonded to the underneath side of the strip 16 and the bar 12 is bonded to the upper side of the strip 16.

In some cases, I prefer that the bar 14 be cold-rolled steel and that the bar 12 be aluminum. In such a case, I prefer that the strip 16 be, for instance, 6575 durometer neoprene rubber which is heat bonded with standard vulcanizing techniques to the bars 12 and 14. Such bonding techniques are well known and do not need to be discussed, in detail, in this description. The lower steel bar 14 can, of course, be used with magnetic chucks or holding devices conventionally provided on machining systems. The upper aluminum bar 12 is easy to machine and will not rust during storage.

The composite bar 10 may be provided in varying widths and thicknesses. For instance, each of the bars 12 and 14 may be one-fourth inch thick while the strip 16 is one-sixteenth inch thick. This thickness of the strip 16 will permit a small section of the bar 12 to be moved slightly relative to the bar ll4. That is, if a small section of the composite bar 10 is cut from the bar, the upper bar 12 of this small section can move slightly relative to the lower bar 14 of the section. Generally, such a movement will occur in a plane which is generally parallel-to the plate 14.

Referring now to FIGS. 2 and 3, an embodiment of my holding device 20 will be discussed. This holding device 20 comprises a first rigid plate 22, a second rigid plate 24 and a pad 26 of resilient material sandwiched between the plates, the plates being bonded to opposite sides of the pad. The plate 24 is elongated and the plate 22 and pad 26 are disposed at or adjacent one end portion of the plate 24. A third plate 28 and resilient pad 30 are disposed at the opposite end portion of the second plate 24 as illustrated. The third plate 28 is parallel to the plates 22, 24 and the plate 22 and the said opposite end portion of the plate 24 are bonded to opposite sides of the pad 30. The facing edges of the plates 22, 28 provide jaws 32, 34 for receiving parts P therebetween.

The plate 28 extends outwardly from the adjacent end edge of the plate 24 by a predetermined amount as indicated at 36. Thus, when the device 20 is placed in a conventional vise, such as indicated at 38, with the jaws of the vise arranged to close on the ends of the plate 24, the maximum amount of movement of the third plate 28 toward the first plate 22, i.e., the closing of the jaws 32, 34, will be equal to this predetermined amount 36. This is best seen in FIG. 3. In this manner, I can control the force with which a part P is gripped by the jaws 32, 34. If a part P is proportioned and designed so that it cannot be or should not be compressed beyond a predetermined amount, I can establish this by controlling the dimension indicated at 36. As the jaws of the vise 38 tighten against the ends of the plate 24, the plate 28 will move a distance equal to the dimension indicated at 36.

By the practice of the method of my invention, the composite bar can be used to fabricate the holding device by simple machining operations. That is, the plate 24 can be a portion of the bar 14, the plates 22, 28 can be portions of the bar 12 and the pads 26, 30 can be portions of the resilient strip 16. The jaws 32, 34 may be formed by machining a transverse slot through the bar 12 and the strip 16 to provide the plates 22, 28 and the pads 26, 30. The offset dimension 36 may be established simply by machining a predetermined amount off the bar 14. Thus, the device 20 can be provided simply by cutting off a section of the composite bar 10 to the total length of the device 20 and then making a first cut to provide the jaws 32, 34 and the space between the pads 26, 30 and another cut to provide the offset dimension 36. Preferably, the cut which is made to provide the spacing between the jaws 32, 34 will be just slightly greater, in the order of a few thousandths, than the size of the pan P to be disposed between the jaws. Thus, in order securely to clamp the part P, it will only be necessary to move the plate 28 slightly relative to the plate 22. This slight movement, of course, can be controlled by controlling the dimension indicated at 36.

Referring now to FIG. 4, a holding device 20, similar to the device 20, will be discussed. The device 20' is proportioned and designed to engage the part P with the inner edges of the pads 26, 30. Specifically, the inner edge of the pad 30 extends inwardly from the jaw 32 by an amount indicated at 40 and the inner edge of the pad 26 extends inwardly from the jaw 34 by an amount indicated at 42. Thus, when a part P is disposed between these inner edges of the pads 26, 30 and the plates 22, 28 are moved inwardly as indicated by the arrows 44, 46 the part will be snugly engaged by the pads 26, 30.

The plate 28 extends outwardly from the left-hand end (FIG. 4) of the plate 24 by an amount indicated at 36 and the plate 22 extends outwardly from the right-hand end of the plate 24 by an amount indicated at 36'. Thus, when the device 20' is placed in a conventional vise with the jaws of the vise arranged to close on the ends of the plate 24, the maximum movement of the plates 22, 28 will be determined by the dimensions 36, 36. The device 20 is particularly suited for holding frail parts, such as thin-walled plastic parts and the like, which should not be held tightly by rigid members such as the jaws 32.

Referring now to FIG. 5, another of my devices 20 will be discussed. The difference between device 20" and the devices 20, 20 is that the jaw 32' is formed with a cutout and the jaw 34' is formed with another cutout, these cutouts being arranged to provide a socket 48 for receiving an irregularly shaped part. The cutouts in the jaws 32, 34 are merely illustrative and it will be appreciated that any desired portion of a socket perimeter can be produced by machining a contour corresponding to that portion into the plates 22, 28'.

Referring now to FIG. 6, my illustrative holding device 50 will be discussed. This device 50 is arranged to provide resiliently expansible jaws so that a part can be held without the use ofa vise, such as indicated at 38 in FIG. 3. The device 50 comprises a first plate 52, a second plate 54 and a pad 56 sandwiched between these plates. The device 50 also includes a third plate 58 and pad 60 disposed at the opposite end of the plate 54 with the inner edges of the plates 52, 58 arranged to provide jaws as indicated at 62, 64. The plate 54 can be fastened to a machine table or the like by means such as the illustrated screws 66, 68. Further, the edges of the pads 56, 60 adjacent the jaws 62, 64 can be undercut as indicated at 70, 72. Thus, a part may be shoved between the jaws 62, 64 which will expand to receive the part and then close against the part securely to hold it in position upon the plate 54.

Referring now to FIG. 7, another holding device 80 will be discussed. This device 80 comprises a first plate 82 disposed adjacent one end of a second plate 84 and a pad 86 sandwiched between these plates. A third plate 88 is disposed adjacent the opposite end of the second plate 84 and a pad 90 is sandwiched between the plate 88 and the said opposite end. The inner edges of these plates 82, 88, therefore, provide inwardly facing jaws as indicated at 92, 94. In this device 80, I

prefer to provide threaded fastening elements, such as indicated at 96, 98 for drawing the jaws 92, 94 together to grip a part received therebetween.

Referring now to FIG. 8, another illustrative device 100 will be discussed. This device 100 comprises a first plate 102 extending along one edge portion of a second plate 104 with a pad, such as indicated at 106, sandwiched therebetween and a third plate extending along the opposite edge portion of the plate 104 with a pad sandwiched therebetween. Each of these two plates 102, 108 are formed with cutouts as indicated at 112, 114 to provide a socket 116 for receiving a part adjacent one end portion of the plate 104. I then provide a threaded fastening element such as indicated at 118 for expanding and closing this socket 116 as indicated by the arrow 120.

Referring now to FIG. 9, it will be seen that l have illustrated a device which comprises a first plate 132 disposed above a second plate 134 and a pad 136 sandwiched between these two plates. The device 130 also includes a third plate 138 disposed above a portion of the plate 134 and a pad 140 sandwiched between these plates. It will be appreciated that the plates 132, 138 were originally one section of a bar 14 of a composite bar 10 and that the plates were separated by providing the irregularly shaped cut as indicated at 142. This irregularly shaped cut 142, which may be provided with a pantograph-type mill, forms an irregularly shaped gripping edge. For instance, when it is desired to hold securely a part having an irregularly shaped profile, the upper plate of a holding device can be separated by a cut corresponding to that profile. The device 30, which may be quite lengthy in some cases, is ideally suited for holding irregularly shaped sheet metal objects.

Referring now to FIG. 10, it will be seen that I have illustrated a device comprising a baseplate 152 and four upper plates 154, 156, 158, with a resilient pad 162 sandwiched between each upper plate and the baseplate. Each upper plate 154, 156, 158, 160 provides a perimetral section 164 of a socket for receiving a part. The baseplate 152 may be provided with mounting holes as indicated at 166.

The illustrative device 150 is proportioned and designed for snugly holding a cylindrically shaped object. It will be appreciated that this device may be formed by drilling a hole of the desired dimension through the upper plate, i.e., through the plate from which the plates 154, 156, 158, 160 are cut, and, if desired, through the plate 152. Then, by making the two perpendicular cuts as indicated at 168, through the axis of the hole formed in the upper plate, the upper plate is divided into four radially and resiliently expansible jaw sections.

It will be appreciated that each of the above-discussed devices 20, 20, 20", 50, 80, 100, 130, 150 can be provided by taking a section of the composite bar 10 and then cutting the upper bar 12 of that section into separate jaw sections. In some cases, the resilient strip 16 of the composite bar section is cut to facilitate the receiving of parts between the jaw sections.

My holding devices and my methods for making the same will provide a machine shop with an ideal means for making special tooling for manufacturing relatively low quantities of parts. The resiliently movable jaw sections which are provided by cutting the upper bar 12 of a composite bar 10 section greatly enhances the holding characteristics of the devices. Further, the fact that I can so easily control the closing movement of the jaw sections as illustrated in FIGS. 3 and 4 is of great advantage in machining frail parts.

What I claim is:

1. A holding device comprising a first rigid plate and a second rigid plate, said plates being generally parallel, and a pad of resilient material sandwiched between said plates, said plates being bonded to opposite sides of said pad, whereby said plates are resiliently connected for slight relative movement, said first plate being split into a pair of separate portions, each of of which is resiliently connected to said second plate by said pad, said pair of portions providing jaws for gripping parts, each of said jaws being resiliently movable relative to said second plate and relative to the other jaw.

2. A holding device comprising a first rigid plate and a second rigid plate, said plates being generally parallel, and a pad of resilient material sandwiched between said plates, said plates being bonded to opposite sides of said pad, whereby said plates are resiliently connected for slight relative movement, said second plate being elongated and said first plate and said pad being disposed adjacent one end portion of said second plate, a third plate disposed parallel to the opposite end portion of said second plate and on the same side thereof as said first plate, and a second pad of resilient material sandwiched between said third plate and said opposite end portion, said third plate and said opposite end portion being bonded to opposite sides of said second pad, whereby the facing edges of said first and third plates provide jaws for gripping parts.

3. The invention of claim 2 in which an edge of said third plate extends outwardly from the adjacent end edge of said oppositeend portion by a predetermined amount, whereby, when said device is placed in a conventional vise with the jaws of the vise arranged to close, respectively, on the ends of said second plate, the maximum amount of movement of said third plate toward said first plate by the vise is equal to said predetermined amount.

4. The invention of claim 3. in which anedge of said first plate extends outwardly from the adjacent end edge of said one end portion of said second plate by a second predetermined amount, whereby, when said device is placed in such a conventional vise with the jaws of the vise arranged to close, respectively, on the ends of said second plate, the maximum amount of movement of said first plate toward said third plate by the vise is equal to said second predetermined amount.

5.'The invention of claim 2. including means for drawing said first and third plates together to grip a part disposed therebetween.

6 The invention of claim 5. in which said drawing means includes'at least one threaded fastening element connecting said first and third plates.

7. A holding device comprising a first rigid plate and a second rigid plate, said plates being generally parallel, and a pad of resilient material sandwiched between said plates, said plates being bonded to opposite sides of said pad, whereby said plates are resiliently connected for slight relative movement, said first plate being cut into a plurality of separate portions, each of which is resiliently connected to said second plate by a portion of said pad, said plurality of portions being formed to provide jaws for gripping parts, each of said jaws being resiliently movable relative to said second plate and relative to the other jaws.

8. A holding device comprising a first rigid plate and a second rigid plate, said plates being generally parallel, and a pad of resilient material sandwiched between said plates, said plates being bonded to opposite sides of said pad, whereby said plates are resiliently connected for slight relative move ment, at least a third and fourth rigid plate disposed parallel to said second plate, and a pad of resilient material sandwiched between and bonded to each of said third and fourth plates and said second plate, said third and fourth plates being on the same side of said second plate as said first plate, said first, third and fourth plates being formed to provide cooperating jaw sections for gripping a part.

9. A holding device comprising a first rigid plate and a second rigid plate, said plates being generally parallel, and a pad of resilient material sandwiched between said plates, said plates being bonded to opposite sides of said pad, whereby said plates are resiliently connected for slight relative movement, said second plate being elongated and said first plate and said pad being disposed to extend longitudinally along one side portion of said second plate, a third plate disposed parallel to said second plate and extending longitudinally along the opposite side portion thereof on the same side as said first plate and a second pad of resilient material sandwiched etween said third plate and said opposite side portion, said third plate and said opposite side portion being bonded to opposite sides of said second pad, whereby the facing edges of said first and third plates provide jaws for gripping parts.

10. The invention of claim 9 in which at least one of said facing edges of said first and third plates is provided with a cutout adjacent one end of said second plate to provide a resiliently expansible socket for gripping parts adjacent said one end.

11. The invention of claim 10 including threaded means for connecting said first and third plates, said threaded means being effective to pull said plates together to tighten said socket on a part.

lqlsligflsv ss mp isin a, firstri i P a eaus a second rigid plate, said plates being generally parallel, and a pad of resilient material sandwiched between said plates, said plates being bonded to opposite sides of said pad, whereby said plates are resiliently connected for slight relative movement, said second plate being elongated and said first plate and said pad being disposed adjacent one end portion of said second plate, a third plate disposed parallel to the opposite end portion of said second plate and on the same side thereof as said first plate, and a second pad of resilient material sandwiched between and bonded to said third plate and said opposite end portion, said first-mentioned pad extending inwardly a predetermined distance from the innermost edge of said first plate and said second pad extending inwardly a predetermined distance from the innermost edge of said third plate, whereby, when a part is received between and in contact with the facing inner edges of said pads and said first and third plates are urged toward each other, such a part will be engaged snugly and held by the inner edges of said pads.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US303647 *Apr 2, 1854Aug 19, 1884 Vise attachment
US2346706 *May 4, 1943Apr 18, 1944Jacobs Mfg CoCollet
US2796787 *Apr 1, 1955Jun 25, 1957Aske Irving EDoubly padded face-plates for vise jaws
US3107716 *Nov 4, 1960Oct 22, 1963Schloemann AgGripping heads for sheet-stretching machines
US3236516 *Jan 30, 1964Feb 22, 1966Young Albert WClamp or vice
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3943666 *Jul 31, 1974Mar 16, 1976Dysan CorporationMethod and apparatus for burnishing flexible recording material
US5337998 *May 21, 1992Aug 16, 1994Matsushita Electric Industrial Co., Ltd.Device for attaching magnetic disk unit
US5421566 *Jan 27, 1994Jun 6, 1995Morgan; Lester A.Holding device
US7332689 *May 30, 2003Feb 19, 2008Boston Scientific Scimed, Inc.Tacking method and apparatus
EP0006063A1 *May 31, 1979Dec 12, 1979André CarossinoDevice for the lateral clamping of workpieces on a machine tool
Classifications
U.S. Classification269/185, 269/275, 248/316.1
International ClassificationB25B1/24, B25B1/00
Cooperative ClassificationB25B1/2405, B25B1/2452
European ClassificationB25B1/24B, B25B1/24B4