US1328347A - Die - Google Patents

Description

W. G. TROHON.

DIE

APPLICATION FILED JUNE 26, 918.

Patented J an. 20, 1920.

UNITED STATES PATENT OFFICE.

WILLIAM G. TROI-ION, OF DANVERS, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

DIE.

Specification of Letters Patent.

Patented Jan. 20, 1920.

Application filed June 26, 1918. Serial No. 242,011.

To all whom it may concern:

Be it known that 1, WILLIAM G.- TRoHoN, a citizen of the United States, residing at Danvers, in the county of Essex and State of Massachusetts, have invented certain Improvements in Dies, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to dies, and especially to those, such as cutting dies, which are grasped by the operator to move them over the work. It is therefore desirable to furnish a guard to prevent the operators hands from slipping and being caught between the pressure-receiving surface of the die and the pressure-applying device.

An object of the present invention is to provide dies of this character with an inexpensive guard efiicient in retaining the implement against slipping in the operators grasp, and which, without adding materially to the weight, shall be strong enough to resist rough usage.

As a feature of the invention, a guard attached to the die and in the form of a resilient member is employed, it preferably eonsisting of a helical spring, which not only readily conforms to the contour of the die to which it is applied, but which is also light and highly resistive of pressure which might deform it. Moreover, such a guard cooperates with the die wall to furnish a depression tending to seat itself firmly upon the upturned edges of the hands and, by the transverse depressions between its convolutions, to further resist displacement.

Another feature of the invention concerns the means for securing the guard in place. It is shown as fixed to the die at a plurality of points, their number and location depending upon the size and shape of the die. lVith a non-continuous guard the ends are fastened to the die wall, preferably by a member, as a wire, passing through it, and may also have means intermediate the ends for retaining it in place. I have shown this intermediate means as consisting of a cradle of solder, which both furnishes a lateral supporting wall for the guard and also positively adheres to it, being particularly effective in entering between the turns of the helical guard. lVith this solder, an additional retaining means or clip may be used to strengthen the joint and facilitate the attaching operation, especially at reentrant portions of the die. This last-mentioned securing means, with or without the clip, may also be used in connection with a continuous guard.

When the guard is continuous, I prefer, as a feature of the invention, to connect its adjacent ends; and, as it is flexible, the connector may also "be flexible to render easier its application to the guard and the guard to the die. A very secure connecting device is furnished by a helix screwed within the ends of the guard helix.

If desired, the guard may, as a further feature of the invention, be constructed of a plurality of members, one within another. To give maximum strength, plural tubular members, as helices, are employed, these being concentric, and through these tubular members an inner solid member may pass,

.this in the discontinuous guard being utilized to attach it to the die Wall.

Other features of the invention will be developed by the following detailed description of certain embodiments of my invention which are illustrated in the accompanying drawing, in which 'Figure 1 represents in perspective a sole die having separated guards applied to the heel and toe portions;

Fig. 2 shows similarly the securing means for one of the guards;

Fig. 3 illustrates in perspective another form of die with a continuous guard;

Fig. 4 is a perspective view of a clip which aids in securing the guard;

Fig. 5 is an enlarged longitudinal sectional detail of the guard-connecting means with the elements separated; and

Fig. 6 is an enlarged detail in broken perspective of this connecting means in place Referring to Fig. 1, a sole die D of the usual form is shown, having a lower cut ting edge 0 and an upper pressure-receiving edge 9. As such dies are usually handled during cutting operations by the extremities only, separated guards 10 or 12 are, in

the present instance, attached to these portions, they extending adjacent and parallel to the edge 79. The guard 10 appears as a helical spring 14, preferably of steel wire of a suflicient strength to resist the crushing forces to which 'it may be subjected in use. The diameter of the spring is such that a recess 16 is furnished between the wall of the die and the curved lower side of the guard, these surfaces converging upwardly so that the recess is generally of inverted V-shape and of sufficient width to receive the upper edges of the operators hands, so that they are effectively prevented from slipping over the portion 79 of the die. The shifting of the die in the operators grasp is further guarded against by the transverse depressions between the turns of wire, which, by their engagement with the flesh, furnish a sufficient resistance to its twisting or rotary movement. It should further be observed, that with a guard of this resilient character there is a tendency to conform to the outline of the hands, making engagement more certain. The ends of the guard spring are shown as tapered at 18 to bring it closely to the wall of the die and remove shoulders which might catch in objects. .Though a helix of resilient material offers high resistance to permanent distortion, in some dies, particularly if large and heavy, or some parts of dies more liable to be subjected to blows or considerable pressure, it may be desirable to provide a guard stronger than the single helix 1%. For this purpose, the guard 12 is better suited, there being an outer helix 20 similar to 14, and an inner helix 22 introduced before both ends 18 of the former are tapered, it fitting closely within and being concentric to the outer helix. To secure either of the guards 10 and 12 in place, an inner solid member, which may consist of a wire 24:, is passed through the center and formed in its extremities outside the ends 18 into eyes 26 which engage projections furnished by pins 28 headed at their outer ends and riveted through the die wall.

To hold the guard in place between the pins 28, a retaining means 30 may be provided. This is here shown as consisting of a cradle having a base lying against the wall of the die and side walls 32 which extend above and below the guard. These cradles are preferably built up of solder and adhere both to the die wall and to the outer helix, and, when the inner helix is employed, to this as well, thus anchoring the entire guard structure firmly in place to prevent shifting both laterally and longitudinally.

In Fig. 3 a die d of such form is illustrated that its guard 34 encircles the entire wall. Like the guard 12, this guard 34 has outer and inner helices 36 and 38. To join the adjacent ends of the helix 36, there cooperates with them a connector 4E0, which may consist of a helix section similar to that forming the guard, but of such diameter that it may be screwed within one of the guard ends, and then the opposite end screwed over it, this corresponding in effect to a threaded nipple. With its ends thus united, the guard may be sprung over the die by virtue of its resiliency, and, because of its flexibility, will conform perfectly thereto.

To fix the guard 34in place, the cradles 30 of solder may be utilized, so disposed as to hold it to the die wall wherever it is necessary. WVhere there are re'ejntrant portions, as at 1", I find it desirable to use an additional securing element, consisting of a clip 42. This clip may be of relatively thin sheet metal having a shank 34; adapted to lie in contact with the wall of the die, and a curved portion 46 generally conforming to the member 36. In constructing the connecting means with this clip, the latter is placed over the guard with the shank in contact with the die wall and pressed against it in any convenient way. Solder ,is then flowed in beneath the clip, between it and the die, and about the guard. There results an arrangement similar in eiiect to that of the retaining means shown at 30 in Fig. 1, except that it holds the guard more firmly to the die. While, as pointed out, this arrangement is of particular utility for fastening the guard to depressions of a die wall, it may to advantage be employed wherever it may be desired to strengthen the cradles 30. In using'a continuous guard with connected ends, it is desirable to locate one of the securing means 30 over the connector 40, as is illustrated in Fig. 6. By so arranging the structure, the solder enters both the main and connecting helices and binds them securely to each other and to the die.

The connector is not necessarily confined in its use to the continuous guard of Fig. 3, but may also be used to join sections of a non-continuous guard. For example, Fig. 6 may be considered to be an enlarged detail of a cradle associated with the guard 12 in Fig. 1, as well as with the guard 36 in Fig. 3.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. A die provided with a guard including a resilient member attached to the die.

2. A die provided with a guard including a tubular member attached to the die.

3. A die provided with a guard including a helix carried by the die.

4:. A die provided with a guard including a helical spring arranged for contact with the hands of the operator grasping the die.

5. A die provided With a guard including a member curved in cross section and having a series of transverse depressions.

6. A die provided with a guard capable of conforming to its contour and yielding upon contact with the hands of the operator, and means for securing the guard to the die at a plurality of points.

7. The combination with a die having a cutting edge and a pressure-receiving edge, of a helix extending about the die adjacent to the pressure-receiving edge, and means for securing the helix to the die.

8. The combination with a die, of a spring guard extending about it, and means for securing the guard to the die at separated points.

9. The combination with a die, of a spring guard extending about it and having separated ends, means for securing these ends to the die, and means for supporting the spring laterally at intermediate points.

10. The combination with a die having aprojection, of a guard secured to the projection and being movable relatively to the die at points intermediate the projections.

11. The combination with a die, of a tubular guard member extending about the die, a member passing through the tubular memher, and means for securing this inner member to the die.

12. The combination with a die provided with a projection, of a tubular guard member extendin about the die, and member passing through the tubular member and being secured to the projection.

13. The combination with a die, of a guard member extending about and having a wall converging toward the wall of said die, and retaining means for a portion of the guard member filling the space between the member and die wall.

1%. The combination with a die, of a guard member extending about and having a wall converging toward the wall of said die, this guard member being provided with depressions, and retaining means for a portion of the guard member filling the space between the member and die wall and entering the depressions.

15. The combination with a die, of a helical spring guard, and a cradle secured to the die for retaining the guard in place thereon.

16. The combination with a die, of a helical spring guard, and a cradle of solder for retaining the guard in place on the die.

17. The combination with a die, of a guard therefor, and a member surrounding the guard and being secured to the die.

18. The combination with a die, of a guard therefor, a clip cooperating with the outer side of the guard, and means for securing the clip to the die.

19. The combination with a die, of a guard therefor, a clip consisting of a portion surrounding the outer portion of the guard and a portion extending along the wall of the die, and means for securing the clip to the die.

20. The combination with a die, of a guard therefor, a clip consisting of a portion surrounding the outer portion of the guard and a portion extending along the wall of the die, and means for securing the clip to the die and guard.

21. A die provided with a guard comprising a plurality of concentric members extending about the die.

22. A die provided with a guard comprising members one within another.

23. A die provided with a guard comprising members one within another, and means for securing both members to the die.

24. A die provided with a guard comprising inner and outer tubular members.

25. A die provided with a guard comprising inner and outer concentric members extending in contact with one another about the die.

26. A die provided with a guard comprising a tubular member and a solid member extending therethrough about the die.

27. A die provided with a guard comprising a tubular member and a solid member extending therethrough and being secured at both extremities to the die, and means for securing the solid member to the die.

28. A die provided with a guard comprising inner and outer tubular members, and a solid member extending through the tubular members.

29. A die provided with a guard comprising concentric helical springs.

30. A die provided with a guard comprising concentric helical springs, and solder connecting the springs to the die.

31. A die provided with a guard comprising concentric helical springs, and a wire extending through the inner sprin 82. A die provided with a guardcomprising concentric helical springs, a wire extending through the inner spring, and means for securing the wire to the die.

33. A die provided with a guard including a flexible member having adjacent ends, and a connector between the ends.

34. A die provided with a guard including a flexible member having adjacent ends, and a flexible connector between the ends.

35. A die provided with a tubular guard having adjacent ends, and means situated within the guard for connecting said ends.

36. A die provided with a helical guard having adjacent ends, and a helix connecting the ends.

37. A die provided with a helical guard having adjacent ends, and a helix screwed within the adjacent ends.

'38. The combination With a'die, of a member extending about the die andhaving adjacent ends, a connector for said ends, and means for securing the ends and connector 5 to the die.

39. The combination With a die of a helical member extending about the die and having adjacent ends, a helix connecting said ends, and solder securing the ends of the member and the helix to the die. 10

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

WILLIAM G. TROHON.

Correctionsin Letters Patent No. 1,328,347. I

It is hereby certified that in Letters Patent N 0. 1,828,347, granted January 20, 1920, upon the application of William G. Trohon, of Danvers, Massachusetts, for an improvement in Dies, errors appear in the printed specification requiring correction as follows: Page 2, line 123, claim 2, for the Words attached to read carried by; same page, line 125, claim 3, for the words carried by the die read extending along the periphery of the die; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Ofiice.

Signed and sealed this 4th day of May, A. 1)., 1920.

M. H. COULSTON,

Acting Commissioner of Patents.

[SEAL]

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