US2129448A - Cutting die - Google Patents

Description

\ Sept. 6, 1938. v. w. SHORT 2,129,448

CUTTING DIE Orl'iginal Filed March 29, 1937 2 Sheets-Sheet` 1 Sept' 5, 1938 v. w. SHORT f 2,129,448

CUTTING DIE originalFiled March 29, 1937 2 sheets-sheet 2 Patented Sept. 6, 1938 UNITED STATES CUTTING DIE Victor W. Short, Kirkwood, N. Y., assignor to Endicott Johnson Corporation, Endicott, N. Y., a corporation of New York Substitution for application Serial No. 133,701,

March 29, 1937.

This application September 18, 1937, Serial N0. 164,579

18 Claims.

This invention relates to improvements in cutting dies particularly adapted for cutting blanks from upper leather and sole leather, although same is also capable for use in cutting blanks from rubber cloth, fabric, paper, Celluloid, linoleum, oil cloth, imitation leather or other material, the present application being a substitute for my copending application Serial No. 133,701, led March 29, 1937.

The principal object of the invention is toprovide dies for cutting leather blanks for shoe uppers, said dies comprising single or double edged open contour frames with transparent sheets secured therein, each having traced thereon their respective designs of the lasting allowances, laps, cut-outs, medallions, embossings, press perfs or stampings which do not entireli7 penetrate the material, seams, location marks, trims, pinks, scallops, perforations, strap locations, eyelet locations, buckles, ornaments, gorings, lacings, overlays, trimmings, stitchings, slots, chisels, toolings, and strippings of the quarters, Vamps, tips, and linings for any style or design of shoe.

Experienced cutters in shoe factories usually examine each skin for detection of Variables with respect to texture and color of the skin, and for locations of tan burns, grub marks, and slaughter cuts over the area of the skin, and as 3 consideration must be given to such factors, much time is lost in planning; but when using my dies with the tracings of the designs marked on the transparent sheets an experienced cutter may place the dies directly on the leather in such 35 position that poor or defective portio-ns of the leather will lie directly under portions of a design over which a strap will ultimately be placed, or under portions of the design which are allowed for lapping or lasting, thereby eliminating loss 40 of considerable amounts of good leather, and

also increasing speed of production.

A further object of the invention is to provide dies of the above type in which the transparent design sheets are interchangeable and can be 45 used on any height mallet handle die, Walker die, solid back die, or any clicker die used with any clicking machine, said sheets being secured within the dies by means of the same lugs which locate the positions of the stabs which indicate to the stitcher the amount of lap which is to be taken in the upper of the shoe; or in the case of dies which do not have such stabs, the transparent design sheets being attached by insertion in a groove on the inner walls of the dies or by eyelets, side brackets, clamps, Cement, or any other means to the inner walls of the dies.

I will explain the invention With reference to the accompanying drawings, which illustrate several practical embodiments thereof to enable others familiar with the art to adopt and use the same; 'and will summarize in the claims the novel features of construction, and novel combinations of parts, for which protection is desired.

In said drawings:

Fig. 1 is a perspective View of a single-edged quarter cutting die showing a transparent design sheet removably mounted therein.

Fig. 2 is a section on the line 2 2, Fig. 1.

Fig. 3 is a view similar to Fig. 1 of a modified die in which the transparent design sheet is xedly mounted therein..

Fig. 4 is a section on the line 4 4, Fig.3.

Fig. 5 is a perspective view of the same die frame shown in Fig. l with a diierent design sheet removably mounted therein.

Fig. 6 is a perspective View of a double-edge vamp cutting die showing a transparent lap design sheet removably mounted therein.

Fig. 7 is a perspective view of a double-edge quarter cutting die with a removable transparent design sheet.

Fig, 8 is a Section on the line 8 8, Fig. 7.

Fig. 9 is a perspective view of a modified double-edge vamp cutting die with transparent design sheet removably mounted therein bearing only the allowance for folds and laps.

Figs. 1 and 2 show a single-edge quarter cutting die l of conventional shape having a lower cutting edge la and an upper Striking edge lb- On the inner wall Ic of the die are pairs of spaced nibs id ld formed by up-setting the metal of the die, while soft, to form upper and lower lugs 'for engaging the upper and lower faces of the removable transparent design sheet 2 whose edges are held therebetween. If desired, the nibs ld,

instead of being up-set, may be welded or soldered or Otherwise secured on the inner wall lc of the die, or if desired a groove, such as shown in Figs. 7-8 may be provided around the inner walls of the die for receiving the edge of transparent sheet 2.

As shown, the pattern preferably comprises a sheet of Celluloid or other lleXhle transparent material upon which is traced the design of the lasting allowance 2a, overlay 2b, fold 2c, also all cut-outs 2d, any laps, medallions, embossings, press perfs, seams, location marks, trims, pinks, scallops, periorations, strap locations, locations of eyelets, buckles, ornaments, gorings, lacing, trimmings, stitching, slots, chisels, tooling, and strippings of the quarters, Vamps, tips, and linings of the particular design of shoe upper, whereby when using such transparent design sheets an experienced cutter can position the die on the leather so that any defective portions of the leather will lie under a portion of the design over which, for instance, a strap will ultimately be placed in the iinished shoe; or, for instance, under that portion of the design which is allowed for lapping or lasting. Thus as the poor or defective portions of the leather are disposed under the above portions of the design sheets, a considerable amount of good leather may be readily saved.

A series of transparent design sheets 2 bearing different designs may be interchangeably used on any class of height mallet handle die, Walker die, solid back die, or any Clicker die used with any clicking machine.

Figs. 3 and 4 shows a die similar to that shown in Figs. 1-2, but having a non-removable design sheet 2. In this modification the transparent design sheet 2 is the same in all respect as that shown in Fig. 1 but may be made of thicker noniiexible material if desired. The frame Im consists of a length of ribbon steel applied `to the periphery of the sheet 2 in any desired manner, to 'which ribbon the cutting edge is brazed or otherwise secured.

Fig. 5 shows the die l of Fig. 1 provided with a transparent design sheet 3 removably mounted therein in the same manner as the sheet 2 (Fig. l) but bearing a different design. Sheet 3 is also marked with the design of the lasting allowance 3a, fold 3b, cut-out 3c as well as the tooling 3d it self, the sheet 3 being used in the same manner as design sheet 2.

Fig. 6 shows a double-edge vamp cutting die 4 in which the lugs or nibs 4d on the inner wall 4c are formed by up-setting the steel while soft, the nibs being similar to those shown in Fig. 1; but the nibs 4d may be secured to the walls 4c by brazing, welding or soldering, or may be replaced by a groove running around the inner walls 4c of the die receiving the removable transparent design sheet 5 having marked thereon the design Sa, also locating holds 5b, and any other desired markings.

Figs. 7-8 show a double-edge quarter cutting die 6 having a groove 6a; in the middle part of its inner wall 6b for holding the removable transparent design sheet 7, which sheet would be cut full and sprung into place in the groove 6a. The sheet 'I is also marked with any and all features of the design, such as folds 1a., cut-outs lbf, and the like.

Fig. 9 shows a double-edge vamp cutting die 8. In this modication the holders for the remove able transparent design sheet 9 are narrow strips l ll of metal extending between the inner walls 8a of the die and having their ends welded, brazed or soldered to the walls, one strip IU being disposed on the axis of the die and other strips being disposed adjacent side edges thereof. This type of holding means might be used in case the transparent design sheet 9 is simply shaped to the outline 9a of the lasting allowance, laps or folds; the entire central design being eliminated from the sheet. The sheet 9 is retained on the strips I0 by lugs or nibs 8bI secured to the walls 8a as in the preceding figures.

My interchangeable transparent design sheets may be used in connection with any height mallet handle die, Walker die, solid back die, or any clicker die used with any clicking machine, or in fact for cutting upper leather, sole leather, rubber, cloth, fabric, paper, Celluloid, underwear, linoleum, clothing, oil cloth, or imitation leather, or any material for any purpose.

I claim:-

1. A cutting die comprising an endless contour frame having a cutting edge; and a transparent design sheet conforming with the area bounded by the frame and mounted between the inner walls thereof; said sheet bearing marks corresponding to the outline of the finished article to be formed from a blank cut by the die.

2. In a die as set forth in claim 1, said sheet being removably mounted in the die and interchangeable with sheets bearing other designs.

3. In a die as set forth in claim l, said frame being fixedly applied to the periphery of the sheet.

4. In .a die as set forth in claim 1, the sheet bearing Within the outline marks of the finished article the marks indicating areas of all cut-outs and overlying ornaments, whereby the die may be properly positioned with respect to any defects in the material to be cut Visible through the sheet.

5. In .a die as set forth in claim 1, pairs of spaced lugs on the inner walls of said die between which the sheet is inserted.

6. In a die as set forth in claim l, pairs of spaced lugs up-set on the inner walls of said die between which the sheet is inserted.

'7. In a die as set forth in claim 1, pairs of spaced lugs secured to the inner walls of said die between which the sheet is inserted.

8. In a die as Set forth in claim l, a groove extending around the inner wall of the die receiving the edge of the sheet sprung into place therein.

9. In a die .as set forth in claim l, a series of narrow strips extending between the inner walls of the die; and lugs on the walls of the die cooperating with the strips to maintain the sheet when positioned therebetween.

10. A cutting die comprising an endless contour frame having a cutting edge; a transparent sheet conforming with the area bounded by the frame and bearing a design; and means for mounting the sheet in the frame.

11. In .a die as set forth in claim 10, said sheet being removably mounted in the die and interchangeable with sheets bearing other designs.

12. In a die as set forth in claim 10, said means comprising a member xedly applied to the periphery of the sheet, and flXedly secured to the frame.

13. In a die asset forth in claim l0, said means comprising pairs of spaced lugs on the inner walls of said die between which the sheet is inserted.

14. In a die as set forth in claim 10, said means comprising pairs of spaced lugs up-set on the i inner walls of said die between which the sheet is inserted.

15. In a die .as set forth in claim 10, pairs of spaced lugs secured to the inner walls of said die between which the sheet is inserted.

16. In a. die as set forth in claim 10, said means comprising a groove extending around the inner walls of the die receiving the edge of the sheet sprung into place therein.

17. In a die .as set forth in claim 10, said means comprising a series of narrow strips extending between the inner walls of the die; and lugs on the walls of the die cooperating with the strips to maintain the sheet when positioned therebetween.

18. A cutting die comprising an endless contour frame having a cutting edge; and a transparent design sheet conforming with the area bounded by the frame and mounted between the inner walls thereof; said sheet bearing marks corresponding to the outline of the shape of the finished article to be formed from a blank cut by the die together with marginal allowances for laps and folds.

VICTOR W. SHORT.

Images