US858715A - Die. - Google Patents

Description

7 0 9 1 2" Y. L U. Tu D E T N E. T P

QM E N M E G T. I D M L @Ru 1 oo 5 B 0- N APPLIOATION FILED MABJ, 1906. RENEWED DEC. 11, 1906.

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INVENTOR red 6min:

ATTORNEY;

THE NORRIS PETERS cm, WASHINGTON, n. c.

No. 858.715. PATBNTBD JULY 2, 1907.

A. M. GAINES.

DIE.

APPLICATION FILED MAR. 'l, 1906. RENEWED DEC. 11, 1966.

' I 8 SHEETS- -SKBET 8.

WITNESSES 7 6 INVENTOR fl-n: NORRIS PETERS co., WASHINGTON, 0. c4

UNITED STATES PATENT orrron.

ALFRED M. GAINES, OF COLUMBUS, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE CAPITOL LOCK-NUT AND WASHER COMPANY,

OHIO.

DIE

Specification of Letters Patent.

Patented July 2, 1907.

Application filed March 7, 1906. Renewed December 11 1906. Serial No. 347.370.

To all whom it may concern:

Be it known that I, ALFRED M. GAINES, a citizen of I the United States, residing at Columbus, Hotel Hartman, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Dies, of which the following is a specification.

My invention relates to new and useful improvements in dies.

The object of the invention is to provide a die for forming the tongue washer used in connection with the lock nut for which Letters Patent were granted to me February 14th, 1905 and numbered 782,808.

Another object lies in the provision of a two part die comprising a gang of punches whereby the washers are produced by a plurality of successive operations or steps and by which four washers are worked on simultaneously.

Finally the object of the invention is to provide a device of the character described that will be strong, durable, efficient and comparatively simple and inexpensive to construct, and one in which .the several parts will not be liable to get out of working order.

With the above and other objects in view, the invention consists of the novel details of construction and operation, a preferable embodiment of which is described in the specification and illustrated in the accompanying drawings, in which:

Figure 1 is a face view of the lower part or member of the die, Fig. 2 is a face view of the upper part or member of the die, Fig. 3 is a longitudinal sectional view of the die showing the members separated, Fig. 4 is a plan view of a strip of washer material showing the results of the various operations or steps, Fig. 5 is a transverse vertical sectional view taken on the line XX of Fig. 3 and looking in the direction of the arrow, and Fig. 6 is a longitudinal sectional view of the cutter block taken on the line a-a of Fig. 1.

In the drawings the numeral 1 designates the upper or male member of the die and 2 the lower or female member. The lower member 2 is formed at its opposite ends and on opposite sides with ears 3 from which pilot or guide posts 4 extend vertically. These posts are received in apertured ears 5 projecting from the upper member 1 and have sufficient length to permit the necessary separation of the members without becoming disengaged from the said ears 5. The members of the die are thus alined and caused to register at the same points upon being brought together after each separation.

The upper member 1 has a general rectangular shape and is provided with a plurality of cylindrical recesses 6 in its face or underside. These recesses of which there are preferably three, are positioned at the central and right hand portions of the upper member with refereuce to Fig. 3. The first recess 6 receives a cylindrical bushing 7 which projects slightly below the memher and has secured in its center, a round punch 8 having a fiat lower end. In the next recess 6 a bushing 9 similar to the bushing 7 is secured and likewise projects below the face of the member 1. This bushing 9 receives a vertically disposed segmental punch 10, the latter being formed with an inwardly directed vertical rib 11 and being held in position by a snugly fitting plug 12 inserted in the bushing and held therein by a central screw 14 In the next recess 6 a bushing 15 like the bushings 7 and 9 is secured. For fastening the bushings in place I pass set screws 16 through the upper member from one side into the bushings, which are screw threaded to receive them and permit them to impinge the punches to fasten the latter in the bushings. Within the bushing 15 I mount a punch 17 formed with a round head 18 half surrounded by a depending shoulder 19 which projects below the punch body. -Near the punch17 and to the left thereof with reference to Figs 2 and 3, I mount a depending cutter head 20 secured to the face of the upper member 1 by pins and screws 21 and 22 respectively. The cutter head 20 carries along its right hand side (see Figs. 2 and 3) a cutter 24. It is to be noted that the centers of the punches 8, 10 and 17 and the head 20 are equi-distant and in longitudinal alinement with the sides of the upper member 1 aswill be evident from Fig. 2.

The lower member 2 comprises a base plate 25 which has suitably secured upon its upper side by a plurality of screws 29, a work supporting plate 27. This plate 27 and the base plate 25 are formed with cylindrical vertical openings 28 and 29 adapted to receive the round punch 8 and the round head 18 of the punch 17 respectively. While a segmental opening 30 is provided in the plates to receive the punch 10. By provision of these openings the metal punched from the strip is permitted to fall through the lower member. Arranged on the work supporting plate 27 is a stripper plate 31 having its underside recessed to receive the blank metal strip a from which the washers are produced. The transverse width of the recessed portion of the stripper plate 31 is substantially the same as that of the strip so as to permit the latter to pass freely beneath the plate, but preventing lateral displacement. The stripper plate 31 is formed along its longitudinal center with openings 32, 33 and 34 registering with and conforming to the contour of the openings 28, 30 and 29 respectively, but slightly larger so as to provide sufiicient clearance to prevent sticking when the punches are passed through and withdrawn. The

OF COLUMBUS, OHIO, A CORPORATION OF stripper plate terminates substantially flush with the inner end of the plate 27 with reference to Fig. 3.

Against the inner end of the plate 27 a thin cutter plate 35 is secured and positioned so that the cutter 24 will pass down in close proximity to its outer face or side, thus producing a shearing action and cutting off the washer from the strip. An upsetting plate 36 fits snugly against the cutter plate 35 and has its upper surface normally flush with the upper surface of the working supporting plate 27. This plate is arranged to be depressed and is supported on coiled springs 37 through which pins 38 project. In its central portion the plate 36 is formed with an annular opening 39 into which an upsetting punch 40 mounted on the base plate 25 projects. The punch 40 is formed at one side with a curved inclined boss 41 which is adapted to register with and enter a correspondingly shaped depression 42 formed in the under face of the cutter head 20. v At its opposite side the upsetting plate 36 fits snugly against a yieldable vertical stop plate 43, the latter standing out a short distance from a stop block 44 and being supported on the outer ends of plungers 45 passing into cylindrical recesses 46 extending horizontally in the block 44. Pins 47 having their heads impinging the outer side of the block are inserted thereinto and screw threaded into the inner ends of the plungers 45. Coiled springs 50 encircling the pins 47 are arranged in the recesses and bear against the plungers 45. In this way the stop plate 43 is held in position and returned to position after being depressed or moved horizontally. It is to be noted that the stop block 44 is also secured in place by pins and screws 21 and 22 respectively. By provision of the yieldable stop plate 43 the washer may be more readily cut from the strip as sufficient play is provided to allow the washer to drift as it is cut. I

I will now proceed to describe the operation whereby the washers are formed. However it would be well to state that it has been found sufiieient for all purposes to form the tongue surrounding the bolt opening only substantially half way therearound instead of entirely therearound; however the principle as well as the operation and construction of the washer remains the same, the washer having been made both ways.

The die is mounted in a suitable press, the upper member 1 being formed with a suitable tail-stock 48 by which it is secured to the usual reciprocating press head, while the lower member 2 is formed with end 50 hooks '49 by'which it is secured to the press bed. The parts thus mounted, the upper member 1 is raised and lowered as desired and caused to properly register with the lower member 2 when brought down thereon by the guide posts 4 and the ears 5. A suitable strip of metal,

such assteel, having the width and thickness of the washersto'be'formed as indicated at a in Fig. 4 is inserted between'the' stripper plate 31 and the work supporting plate 27 so as to stand in the recess of the former and rest on the latter. Any suitable means may be provided for stopping the strip a at the proper point; however it is inserted a sufficient distance under the stripper plate to cause the central portion of the first washer b to stand over the opening 28 or until its inner edge indicated by the dotted line a alines with the outer edge of the plate 27 The upper member is then brought down, the punch 8 passing througlfthe strip and forming the bolt opening or hole (1, the waste metal falling out through the opening 28. The upper mem her is now raised and the strip moved inward until the transverse center of the bolt opening (I registers with the transverse center of the opening 30, when the member 1 is again brought down, the punch 10 and the vertical rib 11 forming the tongue 6 and the slotf therearound, the punch 8 at the same time forming the bolt opening d in the next following washer. After the upper member is raised the strip a is moved on until the center of. the bolt opening registers with the center of the opening 29, when the member 1 is again lowered. The round head 18 of the punch 18 passes freely through the bolt opening while the shoulder 19 engages the tongue 0 and mashes the same down so that it is flattened and lies be low the upper surface of the washer, the metal of the tongue spreading into the slot f and being prevented from spreading in to the bolt opening by the round head 18. At the same time the punches 10 and 8 are forming the tongue and bolt opening of the following washers. It is to be noted that the metal strip being fed into the die cold and the punch 1'7 being cold, the tongue when mashed or flattened is cold tempered and thus rendered extremely tough and resilient. The upper is again raised and the strip fed forward until its end abuts the stop plate 43. When the member 1 is brought down, the washer is cut off from the strip by the cutter 24 and the cutter plate 35 at the same time the head 20 engages the washer and carries it downward with the upsetting plate 36 until the boss 41 engages the free end of the tongue 6 and upsets the same in the depression 42. When the washer is cut from the strip, the yieldable stop plate 43 gives suilicient to permit a clean and free cut. The member is now raised, permitting the springs 37 which have been compressed to carry the plate 36 and the washer up from the punch 40. The washer is removed and the operation continued. During the cutting of the washer from the strip, the punches 8, 10 and 17 are performing their respective operations on the following washers, so that after the first is formed, the formation of the following washers is continuous and successive. It will be apparent that each time the upper member 1 is depressed a completed washer is formed and that the number of washers produced will depend upon the rapidity with which the upper memher 1 is operated and the strip fed between the stripper plate 31 and the work-supporting plate 27 I wish to call attention to the fact that the head and its cutter 24 and the punch 40 may be omitted and r other appliances for cutting the washer from the strip substituted.

In conclusion I wish to make it clear that my invention resides in a die comprising two members adapted to form a tongue washer in a number of continuous and successive steps or operations consisting in first inserting a strip of metal between the members and forming the bolt opening d, second; forming the tongue 0 and the slot f, third; mashing or flattening the tongue, and

fourth; either cutting the washer from the strip and upsetting the tongue or merely cutting the washer from the strip.

It is also to be noted that my die as constructed will produce nothing but a tongue washer and further only the form of tongue washer illustrated.

What I claim is:

1. A die for forming tongue washers comprising two members, one fixed and the other movable, the movable member carrying a plurality of punches and the fixed member having a plurality of openings adapted to receive the punches, the said punches being separated and constructed to form the tongue, slot and bolt opening of the washer and to mash the said tongue.

2. Means for forming tongue washers comprising in combination with supporting means, a punch for cutting the bolt hole, means for cutting the tongue and a slot therearound, and means for mashing the tongue and spreading it into the slot.

3. Means for forming tongue washers comprising in combination with supporting means, a punch for cutting the bolt hole, means for cutting the tongue and a slot therearound, means for mashing the tongue and spreading it into the slot, and means for cutting the washer from the strip of metal from which it is formed.

4. In a die for forming tongue washers, an upper member/a curved punch having an inwardly projecting vertical rib carried by the upper member, and a lower member having an opening adapted to receive the punch and its rib.

5. In a die for forming tongue washers, an upper member, a tongue mashing punch carried by the upper member having a curved shoulder and a depending round head, and a lower member having an opening adapted to receive the punch.

6. A die for forming tongue washers comprising two parts, one part carrying, a bolt hole forming punch, a

tongue forming punch and a tongue mashing punch, and the other die part having openings adapted to receive the punches.

7. In a die for forming tongue washers, an upper member carrying a plurality of punches, a lower member having a plurality of openings adapted to receive the punches,

and a stripper plate mounted upon the lower member and recessed to receive the strip of metal from which the washers are formed.

8. In a die for forming tongue washers, an upper member carrying a plurality of punclles and a cutter head, a lower member having a plurality of openings adapted to receive the punches and a cutter co-acting with the cutter head, and a stripper plate mounted on the lower member and recessed to receive the strip of metal from which the washers are formed, the said stripper plate terminating short of the cutter.

9. In a die for forming tongue washers, the combination with upper and lower members, of a depressible upsetting plate adapted to receive the washer, and a punch co-acting with the plate to upset the tongue of the washer.

10. In a die for forming tongue washers, the combination with an upper member carrying a plurality of punches and a lower member having openings adapted to receive the punches, of a yieldably mounted stop plate adapted to receive the end of the strip of metal from which the Washers are formed.

11. In a die for forming tongue washers, the'combination with an upper member carrying a plurality of punches and a lower member having openings adapted to receive the punches, of a cutter head mounted on and depending from the upper member, a stripper plate mounted on the lower member, a yieldable stop plate, a depressible up setting plate mounted between the stripper plate and the stop plate, and an upsetting punch associated with the depressible plate and co-acting with the cutter head.

In testimony whereof I aflix my signature in presence of two witnesses.

ALFRED M. GAINES.

Witnesses:

L. R. AYERS, M. B. SCHLDY.

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