US1312011A

US1312011A - Planoattaph co

Info

Publication number: US1312011A
Authority: US
Publication date: 1919-08-05
Anticipated expiration: 1936-08-05

Description

A. R. l. WILKINSON. .VISE 0R L|KE WORK HOLDER. APPLICATION FILED Aue. 15. Isra.

Patented Aug. 5, 1919. 3 SHEETS-SHEET l 'rma COLUMBIA PLANQGHAPH CQ.. wAslllNu'rN. D. c.

A. R. I. WILKINSON.

VISE 0R LIKE WGHK HOLDER.

APPLICATION FILED Amma, 191s.

Patented Aug. 5, 1919.

3 SHEETS-SHEET 2- I THE C DLUMBIA PLANOGRAPII co., WASHINDTON. D.. c.

A. R. I. WILKINSON.

AVISIE 0R LIKE WORK HOLDER. APPLICATION FILED AUG.I5, I9I8.

f1 ,3 1 2,01 1 Patented Aug. 5, 1919.

3 SHEETS-SHEET 3.

ALBERT RICHARD' JAMES WILKINSON, OF TWICKENHAIVI, ENGLAND.

VISE OR LIKE WORK-HOLDER.

Specification of Letters Patent.

Patented Aug. 5, 1919.

Application led August 15, 1918. Serial No. 250,026. i

To all whom it may concern.'

Be it known that I, ALBERT RICHARD JAMEs VILKINsoN, a subject of the King of England. residing atTwickenham, Middlesex. in England, have invented certain new and useful Improvements in Vises or like ll/orkllolders, of which the following is a specication.

This invention relates to work holding devices such as vises or like workholders and the like and has for its object to provide a workholder which can readily be adjusted together with the work held thereby.

In many cases, for example when oxyacctylene or a like welding process is in' progress, it is desirable that the operator should be free to use both hands and at the same time it is undesirable that the process should be stopped in order toshift the position of the Work. The present invention enables the operator to turn the work without interrupting the welding or other' process while enabling the work to be set at the outset in a position convenient to the performance of the operation.

According to this invention a member is so'mounted on a fixed bracket that its angle of inclination relatively to the bracket can be adjusted and on the adjustable member .is rotatably carried a vise or like workholder which can be rotated in either direction, irrespective of the position in which the adjustable member is set, by means of treadle-operated mechanism. The vise or the like is disposed on a table provided with a spindle rotatably carried on the adjustable member and a. second spindle which is preferably horizontally arranged drives the first spindle through bevel gearing. The second spindle can be locked and this lock can be released and the spindle rotated in either direction by means of a trcadle which actuates a pawl so that rotation can be imparted through these spindles to the table and vise mounted thereon. The reversal of the direction of rotation is brought about by throwing the treadle-actuated pawl from one side to the other of the aXis of a toothed wheel mounted on the second spindle with which the pawl engages.

The invention may be put into practice in various ways but `the accompanying drawings illustrate by way of example one construction according to this invention. In these drawings Figure l is a front elevation of the adjustable work holder'.

Fig. 2 is an end view with the gear wheels removed to show the operation of the treadle actuated pawl.

Fig. 3 is a plan.

Like letters indicate like parts throughout the drawings. j A member' A of suitable `construction is provided with a bracket arm A by means of which it can be securely fixed to a work bench or the like. A curved arm B is so pivotally mounted on the fixed member A that this arm can be turned relatively to the member or bracket and fixed in any position. The arm B is attached to the flange C of a sleeve C which is looselycarried on a short hollow shaft A2 which projects laterally from the member A to which the shaft is fixed or with which it is formed integral. shaft A2 is fixed a collar D whose inner face is provided with one or more inclined surfaces D adapted to act as cams. Between these cam surfaces D and the oppo` site flat face of the sleeve C is arranged on the shaft A2 a sleeve E which has one face formedflat to bear against the flat end of the sleeve C while the other face has one or more inclines or cam surfaces E adapted t0 engage the cam surfaces Dl on the fixed collar D. The sleeve E is `provided with a projecting arm E2 on the end of which is a handle. The arrangement is such that by movement of the arm E2 in one direction the arm B is freed and can be moved into any position about the hollow shaft A2. When however' the arm E2 and the sleeve E is moved in the opposite direction the inclined cam surfaces E and D Will so coact as to jam the opposite end of the sleeve E against the face of the sleeve C whereby the arm B will be securely clamped in the position into which it has been moved. Abrupt shoulders E3, D3 on the sleeve E and collar D respectively limit the movement of the` sleeve upon the shaft A.

A spindle F is carried by the fixed member Awithin the hollow shaft A2 and on the endof this spindle which projects par On the outer end of the hollowV alle] to the overhanging part of the arm B is mounted loosely a sleeve which carries integra-lA with it a bevel wheel G and a toothed wheel H. rPhe latter lies between the bevel wheel which is disposed at the end of the spindle VF and the adjacent face of the fixed member A. Between the toothed wheel H and the member A is mounted a plate J which can slide vertically and transversely tothe spindle F. rIhis plate J is provided on one face with .two projections J' adapted to engage the teeth of the wheel H in thev manner shown in Fig. 2. When thus engaged the wheel H and the bevel wheel G are. locked against rotation.

,Rotation can be impart-ed to the wheels Hand G by means of a pawl K which is pivotally carried at K on one arm L of a two-armed leverpivotedl at L on the fixed member A. Torthe other arm L2 of this lever and connected thereto by a link L3 is a treadle L4. The arrangement is such that when the treadle is depressed and the lever arm L2 is pulled downward, the pawl K will move upward and engagethe teeth of the wheel H and rotate this wheel and the bevel wheel Gr step by step. The pawl K is prolonged as at K2von the other side of its pivot point K and weighted. The end of the pawl K is of greater width than the wheel H and a part of the face of the pawl thus `lies as will be seen in Fig. 1 opposite and beneath one or the Vother of two downwardly directed parts or lingers J2 of the sliding plate J. Thus as the treadle actu- 'atedlever L turns and lifts the pawl K the end'ofthe latter will strike one of the fin# gers J2 and lift the plate J so as to disengage the projections J from the teeth of ,the wheel ,H which is thus left free to be rotated by the further movement of the pawl asit engages the teeth of this wheel. Vhen the treadle is releasedr and the lever L and pawl K drop back again the plate J alsok drops and engages by means of the projections J2 the teeth of the wheel H which is Vonce more lockedin the position into which it has been rotated;

The pawl K can be moved from one side to the other ofthe axis of the wheel H so as toenablea'otation to be imparted to this wheel in eitherdirection at will. The shifting over oftheV pawl may conveniently be effected inthe following manner. Extending betweentwo opposed parts A3 A* of the fixed member A is a'rod M which as can be seen in Figs. 1 and 3 lies beside the pawl K.' In thepart A4 is an opening A5 in which is an upwardly directed pin AG which extends only partially across the opening. Hthin this opening A5 lies a plate Non whose inner end is formed or carried a sleeve N -through which passes the' rod M. The

- sleeve l is a suliiciently loose fitfon the rod M to permito the'plate-'N being lifted or turned about the sleeve on the rod M to a sufficient extent to enable one or other of two holes N2 formed in the plate N to be engaged with or disengaged from the pin A, At one side of the inner end of the plate N is a notch N3 in which lies the pawl K. The arrangement is such that the plate N with the notch N3 serves to guide the pawl K and direct it so as to act on the teeth of the wheel H either on one side or the other of the axis of this wheel according to the position of the plate N. If it is desired to throw the pawl K over from the position in which it is shown in Fig. 2 so that it will lie and operate on the other side of the axis of the wheel H, the outer end of the plate N is lifted so as to disengage the inner one of the two holes N2 in that plate from the pin A when the plate N can be pushed inward until the second hole N2 engages the pin A. rlhe pawl K will then be shifted in the desired Vmanner and retained by the notch N3 in the position necessary to bring about step by step rotation of the wheel H in the opposite direction when the treadle actuated lever L L2 is operated.

The pivoted arnr B carries at its end a sleeve B which serves as a bearing for a spindle O which lies radially with respect to the axis of the spindle F and shaft A2. On the inner end of this spindle O is a bevel wheel P which gears with the bevel wheel G while on the opposite or outer end of the spindle O is mounted a table Q. On this table is disposed in some suitable manner a vise or other work-holder. Conveniently the vise comprises jaws R and R which can slide on the table Q and are operated by a right and left-handed screw-threaded rotatable rod S (Fig. 3) the ends of which are carried by the table Q. The construction and operation of the vise may vary, but com veniently the aws R R are arranged to be reversible so as to enable articles to be held either by causing the jaws to approach each other or to move apart. rPhe vise aws also are preferably so formed and arranged as to enable them to be used for holding work whose dimensions exceed those of the table Q so that the latter may be made relatively short.

Vhen step by step rotation is imparted to the toothed wheel H and bevel wheel. G by operation of the treadle lever L L2 and pawl K similar step by step rotation will be impart-ed to the table Q and vise R R thereon and this rotation will take place in either direction according to the setting of the pawl K. lt will be seen that as this rotas tion is brought about by means of a treadle hollon7 shait A2 about which the arm B can be turned, rotation can in this manner be imparted to the vise carrying table Q irrespective of the position in which the arm B may be set about its pivot axis. Thus the table Q carrying the Work held in the vise jaws R It can be first set at a convenient angle i'or the necessary operation to be performed and then While this operation is in progress and Without interrupting it the table can be rotated in which ever direc tion is convenient.

W hen the table is not being rotated by means of the treadle-actuated mechanism itn is held against further rotation by the locking or' the Wheel I-I by means of the projections J on the plate J in the manner above described. In this Way the free rotation of the table Q is prevented but if it is desired to rotate it freely when starting an operation or setting the work initially the plate J can be lifted by the finger so as to release the wheel II.

The details of construction may be modified as found desirable and in order to adapt the device for the particular purpose for which it is to be used. Since the device is constructed throughout without the need for employing any spring or other part likely to deteriorate or be damaged by heat and as all the parts can be simply formed the apparatus is particularly adapted `for use for holding work which is being subjected to a welding operation When the Work holder and parts connected thereto are liable to become considerably heated. When the Work is once set for a Welding operation with the arm li inclined into the convenient position, the operator can rotate the Work Without interrupting the operation as he has both hands i'ree. The continuance of the Work without interruption is of especial importance in electric welding operations in which the present Vinvention is therefore particularly useful. p

"W hat I claim as my invention and desire to secure by Letters Patent is l. In a `work holding device the combination ot' a fixed bracket, a member so mounted on the bracket that its angle of inclination relatively to the bracket can be adjusted, a member rotatably carried on the adjustable member, means for mounting Work on the rotatable member, and treadle operated mechanism by means of which the rotatable member can be turned in either direction i1'- respective of the angular position of the adjustable member as set forth.

In a work holding device the combination ot a fixed bracket, a member so mounted on. the bracket that its angle of inclination relatively to the bracket can be adjusted, a member rotatably carried on the adjustable member, means for mounting Work on the rotatable member, treadle operated mechal nism by' means of which the rotatable member can be turned in either direction irrespective off the angular position oi the adjustable member, means ,jor locking the rotatable member against rotation, and means for releasing the locking device when the treadle mechanism is operated and the member is turned set forth.

. 8. In a Work holding device the combination oi' a fixed bracket, a member so mounted on the bracket that its angle of inclination relatively to the bracket can be adjusted, a member rotatably carried on the adjustable member, means for mounting Work on the rotatable member, treadle operated mechanism by means of which the rotatable member can be turned in either direction irrespective of the angular position oi the adjustable member, and means for automatically locking the rotatable member except when the treadle operated mechanism is actuated as set f'orth.

il. In a Work holding device the combination of a fixed bracket, aI member pivoted on the fixed bracket so that its angle ot' inclination relatively to the fixed b laeket can be adjusted, means tor locking the pivoted member after its angular position has been adjusted, a member rotatably carried on the pivoted member, means for mounting Work on the rotatable member, and treadle operated mechanism by means of which the rotatable member can be turned in either direction irrespective of the angular position of the pivoted member as set forth.

5: In a work holding device the combination oi a fixed bracket, a member so mounted on the b acket that its angle of inclination relatively to the bracket can be adjusted, a table mounted on a spindle rotatable in the adjustable member, means for mounting Work on this table, a spindle rotatable in the fixed bracket, gearing between this spindle and the spindle on which the table is mounted, and treadle operated mechanism by means oi which the spindle carried in the fixed bracket can be rotated in either direction as set forth. i

6. In a work holding device the combination of a fixed bracket, a member so mounted on the bracket that its angle of inclination relatively to the bracket can be adjusted, a table mounted on a spindle rotatable inthe adjustable member, 4means for mounting Work on thistable, a spindle rotatable in the fixed bracket, gearing between this spindle and the spindle on which the table is mounted, treadle operated mechanism by means oli' which `the spindle carried in the fixed bracket can be rotated in either direction, means for locking the 'table against rotation, and means for releasing the locking device when the treadle mechanism is operated and the table is turned as set forth.

7. In a Work holding device the combinabe adjusted, means for locking the pivoted member after its angular position has been adjusted, a table mounted on a spindle rotatable in the pivoted member, gearing between the horizontal spindle and the spindle on'which the table is mounted, means for mounting Work on the table, a toothed Wheel on lthehorizontal spindle, a treadle operated lever, and a paWl carried on this lever and adapted lto engage the toothed Wheel so as to cause rotation thereof when the treadle is operated as set forth.

8. In a Work holding device the combination of a Xed bracket, a horizontal spindle carried by Vthis bracket, a member pivoted about this spindle so that its angle of inclination relatively to the iixed bracket can be adjusted, means for locking the pivoted member after its angular position has been adjusted, a tablemounted on a spindle rotatable in the pivoted member, gearing between the horizontal spindle and the spindle on Which the table is mounted, means for mounting Work on the table, a toothed Wheel on the horizontal spindle, a treadle operated lever, a paWl carried on this lever and adapted to engage the toothed Wheel so as to cause rotation thereofwhen the treadle is operated, and means for swinging the pawl from one side to the other of the axis of the toothed Wheel so as to reverse the direction in Which the table Will be turned when the treadle is operated as set forth. 9. In a Work holding device the combination of a fixed bracket, a' horizontal spindle carried by this bracket, a member pivoted about this spindle so that its angle of inclination relatively to the fixed bracket can be adjusted, means for locking the pivoted member after its angular position has been adjusted, a table mounted on a spindle rotatable in the pivoted member, gearing between the horizontal spindle and the spindle on which the table is mounted, means for mounting Work on the table, a toothed Wheel on the horizontal spindle, a treadle operated lever, a p avvl carried on this lever and adapted to engage the toothed Wheel so as to cause rotation thereof when the treadle is operated, and a sliding member Which is adapted to move automatically into engagement with the toothed Wheel and to be moved out of engagement with this Wheel b y the pawl when the lever on which the paWl is carried is actuated by the treadle as set forth.

10. In a work holding device the combination of a fixed bracket, a horizontal spinn dle carried by this bracket, a member pivoted about this spindle so that its angle of inclination relatively to the fixed bracket can be adjusted, means for locking the pivoted member after its angular position has been adjusted, a table mounted on a spindle rotatable in the pivoted member, gearing between the horizontal spindle and the spindle ony Which the table is mounted, means for mounting Work on the table, a toothed wheel on the horizontal spindle, a treadle operated lever, a paWl carried on this lever and adapted to engage the. toothed Wheel so as to cause rotation thereof When the treadle is operated, means for swinging the pawl from one side to the other of the axis of the toothed Wheel so as to reverse the direction in Which the table will be turned when the treadle is operated, and a sliding member which is adapted to move automatically into engagement With the toothed wheel and to be moved out of engagement with this wheel by the pawl When the lever on which the pawl is carried is actuated by the treadle as set forth.

11. In a Work holding device the combination of a iixed bracket, a horizontal spindle carried by this bracket, a member pivoted about this spindle so that its angle of inclination relatively to the fixed bracket can be adjusted, means for locking the pivoted member after its angular position has been adjusted, a bevel Wheel on one end of the horizontal spindle, a spindle rotatably mounted on the pivoted member, a table on one end of this spindle, a bevel Wheel on the other end of this spindle gearing with the bevel Wheel on the horizontal spindle, means for mounting Work on the table, a toothed Wheel on the horizontal spindle, a treadle operated lever, a paWl carried on this lever and adapted to engage the toothed wheel so as to cause rotation thereof when the treadle is operated, means for swinging the pawl from one side to the other of the axis of the toothed Wheel so as to reverse the direction in which the table Will be turned when the treadle is operated, and a sliding member which is adapted to move automatically into engagement With the toothed wheel and to be moved out of engagement with this wheel by the paWl When the lever on which the paWl is carried is actuated *by the treadle as set forth.

In testimony whereof I have signed my name to this specification.

ALBERT RICHARD JAMES WILKINSON.

copies of this patent may be obtained for five cents eacii, by addressing the Commissioner of Patents, Washington, D. C."