US2195277A - Vise clamp - Google Patents

Description

March 26, 1940. J, LEmMAg 2,195,277

VISE cum: I

Filed Jun 17. 1937 INVENTOR I J zcls Elem/nan A ORNEY Patented ai. 26, 1 940 UNITED STATES.- PATENT' OFFICE 7' 2,195,277

VISE CLAMP l Jack Kleinman, New York, N. Y. Y Application June 17, 1937, Serial No. 148 643 '2 Claims. (o1. 77 -6s V This invention relates to improvements in vise clamps and more particularly relates to drill vise clampsmor the like and parallel. aligning attachments therefor.

'5" One of the objects of the invention is to provide a unitary device of the character described having novel means adapted to, support fwork clamped therein in paralleled aligned relationship to supporting surfaces of the device andconsequently presenting the Work, in proper normal alignment. y

Another object of the invention is to provide a unitary mechanism that is not easily gouged by drills or by tools operating on the Work; offers T5 a maximum of protection against lodging of chips and consequently no'interference thereby; and is easily cleanable. x

Other objects and advantages willappear from the hereinafter detailed description of theinvention having references to the accompanying drawing illustrating several forms'of the invention, whereint I I v Figure 1 is a perspective view ofv one form of the invention as embodied-in a drill vise.

' Figure '2 is a side elevation partly in section of the form-shown'in Figurel. 1 a b Figure 3 is a fragmentary side elevational view of the form shown in Figure 1, nd as employed in clamping a piece of thin stock;

Figure 4' isa fragmentary plan'view of amour fied form of the invention.

Figure 5 is a section taken substantially along the line 5'5 of Figuree. 1 I Figure 6 is a View similar to'Figure'B, showing another form of the invention; 1 Figure 7 is a perspective, view of "certain cooperating parts of the form shown in Figure6.

Figure '8 is a fragmentarysectional View of p still another form of the invention.

Referring to Figures 1,2, and 3 of the draw 'ing there is illustrated a vise, commonly known as a drill vise, which includes a body l0 havinga base portion l2 and apreferably'integral upwardly projecting jaw I 4 at one end; a screw boss I6 at the other end, preferably formed integrally with the base portion l2 and providinga recess l8. Adapted to slidewithin'this recess is a 'mov-' able jaw member 20.. The lower surface 22 is a precisely and accurately finished plane surface to provide accurate disposition of the vise upon a bed plate of a drill or machine'having other simi lar cooperating finished' surfacesnormal or paralelly disposed with the axis ofthe tool of the machine.

A similar accuratelyandpeas-1y finished up reference character in" Fig. 2;

per surface 24 parallel "to the surface 252 is pro-,

' vide'd at the base of 'the'recess', that is, the upper horizontal surface of the body l0, and an accu- 'rately finished surface 26' is provided at the base as indicated at 30." The screw is se'cured'to' the movable jaw 20 in any well known manner so that upon rotation ofjthe screw the movable jaw 20 is advanced toward or drawn away'from the stationary jaw M. The jaws provide inwardly directed surfaces 32' and 34 against which are secured hardened work clamping plates 36 and 38 respectively. These; plates are finished so as to 20 provide accurately parallel surfaces 40 and 42 adapted to engagewo'rk pieces; I

l A piece of work is: illustrated in Figure 2. a

y The plates 36 and 38ers adapted to be spaced from the finished surface 24 previously described, 25"

thereby providing recesses 46 and 48. I a The lower edges of these clamping plates provide accurately finished plane nether surfaces scans 5 2so as to be parallel with the surface 24 v I and hem a common plane p at a distance d from 30' the plane of the ur'face 24',

b v r as indicated by the A pair of parallel members 54 and 56 each comprising a strip of metal finished to such size along dimension d as to fit very accurately and 3'5 closely but still slidable between the spaces pr0-- vided between the nether surfacesBU and 5Z,'and

the upper surface 24. It is desirable to provide a minimum of sliding defianc between said surfaces in the planes defined bythe dimension at. '0-

These parallel 'members are also preferably of hard material andthinnerin their dimension 27 than their respective overlying hardened plates,

and are adapted to extend inwardly fiohitherespective clamping surfaces 40 and 42 of"th'e 45" clamping plates36 and 38 respectively, as illusti'ated in Figure 2; and are adapted to wholly underlie their respective plates when urged into their respective recesses- 4'6 and 48, so that their opposed faces are back of the'clamping surfaces 50 49 and 42" as illustrated bytheir positibns as shown in Figure 3. 1

While clamping plates are emp1oyed,=it is to be understood that the recesses partially provided thereby may be'ha'dbycutting and grinding into 55- pendent. bores. i At the upper surface 24 of thebase I0 and at the solid stock of the jaw. The cut in the rigid jaw being in the form of an undercut channel and in the slidable jaw as a corner undercut. In the case of the slidable jaw, in the solid or plate recessed jaw, the upper surface 24 cooperates in forming a channel-shaped recess. In the recess of the solid jaw, this recess may be cooperative with a coplanal extension of the surface 2d to underlie its nether surface or such channel-type recess may be cut and ground independent of (above or below) the surface 24.

In any event, the nether surface of the recess and the facing or underlying surface thereof are essentially precisely-finished planal surfaces accurately ground to confine work supporting pieces precisely parallel and cooperative therewith.

These parallel work supporting members arepreferably provided with yielding means for urging them inwardly into the position shown in full lines in Figure l and in this position their inner limit is determined by engagement of heads 58, of screwlifl secured to respective parallel members. Each of the screws 60 is adapted to slide loosely in a compound bore 62, each providing a shoulder64 for engagement with a head 58 and an oppositelyifacing shoulder adapted to form a seat for a spring 68. These springs are preferably but not essentially adapted to surround the screws 60 and are adapted to urge the parallel members inwardly toward each other. One or more screws and/or springs may be employed, with the, springs and screws operating in indelimits are so arranged that they project slightly inward ofthe clamping surfaces 43 and 42.

Parallel shelves s-s are thusprovided upon which the work may rest' prior to clamping. This is for the purpose of providing a. parallel seat or positioning meansin a plane parallel tothe base surface of the vise which is adapted to rest upon the surface of the machine such as a bed plate of a drill press and thus presents the work piece parallel and normal to the disposition of the machine.

In employing the device in a drill pressfor instance, the hole drilled will be normal to the plane of the supporting shelves or surfaces s and this supporting plane is spaced from the upper surface of the base so that in drilling through the work the tip of the drill, or other tool employed such as a ream, does not gouge the upper surface upon which the movable jaw slides and against which the movable jaw is positioned.

In performing operations on the work piece the tool chips gathered in clamps of this character lodge in corners and upon surfaces which i must be removed before aligning a subsequent work piece. With the construction of ,the parallel members as described, any chips or even dust upon the aligning surfaces s and in the corners are easily removed therefrom.

Duringa drilling operation close to the clamping surfaces and within the projecting plane of the parallel members, the drill may strike a parallel member without injury, as this piece is hardened so as to resist the cutting of the drill; and upon contact of the drill with the parallel member it is adapted to recede into the recess and permit the drill to pass. Any chips remaining upon the, aligning surfaces s-s from the previous work pieces are easily removed by manually pressing the parallel members outwardly and completely into their recesses thus wiping the surfaces. s-s clean of any chips which would ordinarily interfere with the proper alignment of subsequent work pieces.

It has also been found that if dust collects I upon the aligning surfacesv especially in the corners, and if not removed, the work piece will be positioned out of line. The dust can however be easily removed by blowing through the recesses. in order to insure reception of the parallel members without; interference; and any chips may become lodged in the recesses and on the parallel members mayalso beeasily removed by blowing through the recesses. I

Referring to Figure 2 it will be seen that the device as constructed according to the above description is capable of clamping thin stock wherein the seats provided by the parallel members is not essentially employed in alignment of such thin stock but may be employed if desired.

In some forms ofthe invention particularly as illustrated in Figure 4, it is not essential that uninterrupted surfaces 8 be presented to support the work above the upper surface of the 'base,; and devices defining a parallel plane but presenting only small area crimes of contact with the work are preferred in some cases; an example of this construction is here shown.

This device comprises pins 'IZ urged inwardly toward each other by springs 14 and limited in their inward movement by engagement of flanges 7 16 on the pins 12 and shoulders 18 provided by the compound bore, 80.

PlugsBZ may be employed to close off the bores I and provide a reacting seat for the springs. Al-

though inthis form shown in Figures ,4and 57,

the pins are illustrated as lying under the surfaces 50 and 52 of the clamping plates 34 and 36, it will be seen-fthat' the clamping, plates may extenddownto the upper surface 24 of the base and the pins may project through holes in these clamping plates. :0

Referring to the modification shown in Figures 6 and 7 the clamping plates 84 may be provided with a downward projection 86 adapted to engage the upper centralportion of a leaf spring 88 secured to the-parallel member 90. This construction permitsthe parallel members to recede at either end, in response to being in thepath of a drill, and is not confined to parallel recession as in the previous forms, when so fixed tea leaf spring as shown. 'i

t has been. found that by confining the clearance to the lowest possible slide tolerances, the parallel memberscannot be displaced from their recesses by longitudinal rotation since no such rotation is permitted by such close confinement of the parallel member between finished surfaces 24 and the finished surfaces 9|.

A suitable cut-out'92' is provided int-he upper portion or the members 90 in orderto expose the upper central portion of. the leaf spring for,

engagement with, the downwardly directed projection 86.

Referring to Figure 8, another modification of 75 A the form shown in Figures 6' and 'Zis hereillustrated and includes a bent projection 94 at-the' upper central portion of the leaf spring which is adapted to limit the inward movement of its associated parallel member by the engagement of the projection 96 with the rear face of the associat'edclam-ping plate 96. It will be particularly noted that, in this instance, the lower surface 98:

of this plate "1% and the upper coacting surface Hill of the parallel member I02 are finished in a simpler manner comparison to the construction shown in Figures 6 and '7. i I

In order to permit the full recession of the member H12; a recess IM, which may be' in the form of a drilled hole, is provided to freely re-.-

ceive the projection 94 and thereby permit the complete recession of the member I82. 1 v

It will be noted that the heads 58 inthe modification shown in Figures 1-3 limit the movement of the work supporting means in the direction where the said means intersects the plane defined byv its associatedjclamping surface. This con struction also prevents the disengagement of the 'work supporting means from the vise clamps and produces a unitary structure.

Likewise, the heads 16 in the construction shown in Figures 4 and 5 prevent the displace ment or disengagement of the Work supporting and 8 serve the same purpose as the heads V 16 above described. a

Having thus described my invention particularly in connection with the preferred embodim'ents illustrating the principleinvolvedyit can be seen from the foregoing description of the device that other forms may be had without departe ing from the principle of the invention-as defined in its broader aspects in the following claims. What I claim as new and desire to secure by Letters Patent, is:

1. In a vise clamp of the character described including a base member having a precisely finished base plane surface and afully exposed precisely finished upper plane surface precisely I parallel with said base surface, a rigid clamp ng jaw extending upwardly from and at right angles to said base member, a movable jaw slidable on said upper surface, one of said jaws having an open-ended recess extending completely thereacross, said recess including a precisely finished nether plane surface precisely parallel to and facing said upper surface, and a single movable work supporting means having a precisely fin ished surface adapted to move in said recess within highly confined limits, said. supporting means having an upper surface slidably cooperative against said nether surface of said recess.

2. In a vise clamp of the character described including a base member having a1 precisely finished baseplane surface and-a fully'expos'ed precisely finished upper plane surface precisely parallel with said base surface, a rigid clamping jaw extending upwardly from and at right angles to said base member, a movable jawslidable on said upper surface, one of said jaws having an open-ended recess extending completely thereacross, said recess including a precisely finished I r base member, a movable jaw slidably supported ,onsaid upper surface and adapted for clamping means adapted .to move .within highly confined upper surface, a clamping plate contacting one of said jaws and presenting a nether surface spaced from said upper supporting surface "wherebya recess is provided between said nether surface of said clamping plate and said upper finished surface,- said surfaces comprising said recess being precisely parallel, and a single movablework supporting means workable in said recess and closely confined between said nether surface of said-clamping plate and said upper finished surface. :4. Ina vise clamp of the character described including a base member having a precisely finished base plane surface and an exposed precisely finished upper plane surface precisely parallel to said base surface, a rigid clamping jaw extending upwardly from and at right angles to said base member, a movable jaw slidable on said upper surface, clamping plates on each of said jaws presenting facing. clamping surfaces, said clamping plates being spaced at precisely identical distance from and precisely parallel to said upper plane surface whereby open-ended recesses are provided thereunder, a single work supporting means movable in each of said recesses and closely confined between said clamping plate and said base, said means adapted to project from said recesses beyond their respective clamping surface, said recesses being of such depth to receive entirely therewithin their respective .wo'rk sup porting means in retracted position thereof.

' 5. In a vise clamp of the character described including a base member having a precisely finished base plane surface and an exposed precisely finished upper plane surface precisely parallel to said base surface, a rigid clamping jaw extending upwardly from and at right angles to said base member, a movable jaw slidable on saidupper surface, clamping plates on each of said jaws presenting opposed clamping surfaces,

the lower ends of said clamping plates being equally spaced from and precisely parallel to said upper supporting surface whereby open-ended recesses are formed thereunder, a movable work supporting means in each of said recesses and closely confined between said clamping plate and said base. and adapted to project from said recesses beyond their said respective clamping surface, saidlrecesses being of such depth as to receiveientirely therewithin their respective work supporting 'means in retracted position, and means captively engaging said work supporting means to their respective clamping jaws and for limiting the said projection thereof.

.6, Ina vise clamp of'the character described including a base member having a finished base plane surface and a freely exposed precisely finished upper plane surface precisely parallel to said'base surface, a rigid clamping jaw extendingupwardly from and at right angles to said opposition with said rigid jaw, said rigid jaw having an open-ended recess extending completely thereacross and overlying said upper sur- Iii.

face, and a single movable work supporting ported on said'upper surface and adapted for clamping opposition with said rigid jaw, said movable jaw having an open-endedrecess extending completely thereacross and overlying said finished upper surface, and a single movable worlr supporting means in said recess and having precisely finished opposite upper and nether surfaces, said work supporting means adapted to slidably rest upon said upper surface of they base member.

JACK KLEINMAN.

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