US1661808A

US1661808A - Die

Info

Publication number: US1661808A
Application number: US133546A
Authority: US
Inventors: Jr Charles A Messmer
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-09-04
Filing date: 1926-09-04
Publication date: 1928-03-06
Anticipated expiration: 1945-03-06

Description

March 6, 1928. 1,661,808

c. A. MESSMER, .1R DIYE Filed Sept. 4. 1926 gru/vento@ 29 'a2 Char/.OSH ss/nef; ./j:J

F119 3 s@ W mmm Patented Mar. 6, 1928.

GHARLES A. IESSMEB, JB.,

0F ST. LOUIS, MISSGUBI.

DIE.

Application led September 4, 1926. Serial Ko. 133,546.

This invention relates generally to dies, and more particularly to dies for cutting paper, cloth, fabrics of all kinds, and espe# cially leather. The principal purpose of the invention is to provide a die which can be quickly adjusted or modified so that it may be used efficiently on either a Knight press or a. clicking machine or as a hand mallet die to cut out blanks for the various parts of boots and shoes and the like.

Another object is to provide a die which, when assembled as a Knight machine die, Will weigh much less than the types of Kni ht machine dies hitherto in use, while vat t e same time the cutting or forming part of the die will be heavier in material and detachable from the other arts of the die, so that it will be rugged an substantial enough and maybe easily detached for use in a clicking press. g

Other objects and advantages willappear in the course of the followin description ofa preferred embodiment of t e invention. In the accompanying drawing forming art of this specification, in which like numers of reference denote like parts wherever the occur, Y

igure 1 is a plan view of the complete die in closed position;

Figure 2 is a perspective view of the same die in open position, but having a different form of hinged connection between the base plate and the stripper plate; and

Figure 3 is a verticalsectional view taken on the line 3-3 of Fi in a Knight press, with a leather blank in position to be operated on by the die. e

A rigid base plate 1 of preferably rectangular ormation has secured to the upper side thereof a forming die 2, that is secured to the base 1 by screw into tapped holes therefor in the die 2 and that pass in unthreaded relation through holes therefor in the base 1. For the purpose of illustration, the die 2 isl shown` as a blanking-out die for cutting fancy overlay and straps in the manufacture of shoes. 'lhe upwardly projecting forming portion 2 could be formed integral with the base portion 1 as a lsingle block, but the die 2 is preferably detachable so that it may be used alone ina clicker press. The base 1 and die 2 can be,- a ertured to permit the descent therethroug of scrap that is f/ormed when the cutting .edges 4 Eerforate the blank 5 that is being formed y the die 2.

ure 1, showing the die v means of -screws 3, that.

lends mto heads 20. C

- A substantially rectangular stripper plate 6 has its rear end secured to the rear end of'base plate l by means-of hinges 7, there bemg preferably one hinge at each side. In the formshown in Figures 1 and 3, the hinges 7 are riveted to the inclined ears 8, .formed by slitting the plate 6 at 9 and bendmg 1t at 10. The ears 8 space the rear end of the base plate 1 from the rear end of the stripper plate 6. The h' to the upper side of the plate 1 by means of screws 11. In the form shown'in Figure 2, S-shaped resilient members 12 are interposed between the hinges 7 and the plate 6 so as to maintain the

plates

1 and 6 in reslhently spaced apart relation to one another. The S-shaped springs l12 of Figure 2 permit vertical motion of the plate 6 without any accompanying forward or backward motion, while the ear springs 8 of Figures 1 and 3 necessitate a sli ht forward or backward displacement of t e plate 6 for every vertical movement of the rear end of the sa1d plate becausebf the inclined'position of the ears 8. f

The plate 6 is apertured at 13to permit the passage therethrough of the-marginal cutting edges lll-of the die 2, which cutting edges are intimately followed by thel outline 15 of the opening 13. The upper sideof the stripper 6 is provided with means for positioning thereon in proper relation to the die 2 the blank that is to be operated on by the die 2. The said means referably comprises a stri 16, preferably Eber or the like, secured to t eplate 6 by means of rivets 17, and presenting an outline 18, that is preferably disposed slightly without and follows the outline 15. Studs 19 are riveted or otherwise suitabl secured to the underside of the plate 6, anl enlarge at their lower or outer ompression springs 21 encompass the studs 19 and bear at one end against the plate 6 and at the other end against the respective heads 20. When the plate 6 is swung down into closed position, as shown in Figures land 3, the heads 20 enter cylindrical sockets 22 that are formed in the upper side of the base plate 1, and

referab y have a close sliding fit therein.

he sockets 22 flare or enlarge conically7 at their u per ends to form seats 23, against which t e outer ends of "the springs 21 impinge when the parts assume the position shown in Fi ure 3. The forward end of the base 1 may ave screwed thereinto adjustmges 7 are secured pios ing screw 24; and adjusting screw 25 may be screwed into bracket 26, secured to the upper side of plate 1 by screws 27. Lock- 25 in position after it has been adjusted. Screws 24 and stops that determine on the anvil of a Knight vpress or pxunch press, as-will be understood by those s illed in the art.

Fancy overla and straps for shoes are preferably cut rom-portions of the leather stock that are selected as being of the same color or shade throughout or of a color or shade to match other parts ofa slice. It is diiicult and impractical to place such stock on the wooden anvil of a clicker press an the selected position thereon, and for such match marking the blanks are preferably lirst cut out roughly by hand slightly larger than the require size, usually using a ide. The die is placed in a Knight press,

in closed position and with the base 1 resting on the anvil 29 thereof, and the roughly cut blank 5 is placed within the confines of the flange 16 over the

cutting edges

4 and 14, and the press is operated, the paper or other soft material 30 being fed over the die, and the head 31 of the press descendin thereon, causing-the plate 6 to descend wit the cutting of the blank 5 and the compression of the springs 21 as the heads 20 descend further into the sockets 22. When the hammer 31 of the press ascends, s rings 21 cause plate 6 to return to its norma position, elevating the blank 5 above the cuttin edges of the die 2, whereupon the nishe blank can be removed and another roug blank inserted in its place, when the cutting operation of the press may be repeated. To use the die 2, cutting edges downward, on blanks from stolk e stock, the plate 6 is lifted and the screws 3 removed, and the die 2 the clicker press.

It will be observed that the conical seats 23 guide the descendino heads 20 into tbe sockets 22, should they ave become slightly displaced laterally on account of any distortion of the thin plate 6, so that the plate 6 need not be heavy enough to prevent such distortion thereby materiell reducing the weight of the die, so that its handling is facilitated and production increased. will, also, be noted that the sprin 21 do not fall o when the plate 6 is li ted, and that the studs 19 do not permanently connect the base 1 and stri per 6, thereby facilitating the removal of t e die 2 from the base 1 for use in the clicker press or as a mal et die. Also, a lighter base plate may be used because the pins 19 need not be fastened thereto. Furthermore, when using the die in a Kmght press, the plate 6 need not be form or pattern as a Y disturbed during the operation thereof, since the blanks are easily placed in and remove from within the confines of the flange 16 on the top side of the plate 6.

Having thus fully described this invention, I hereby reserve the beneit of a changes in form, arrangement, order, or use of parts, as it is evident that many minor changes may be made therein without departing from the s irit of this invention or the scope of the fo owing claims.

I claim:

1. A die comprisin scnting a projecting a block member preorming portion adapted to operate on a blank of stock placed thereover, a stripper member for the forming portion and hinged at one end to the block member, and means borne by one of said membersr for resiliently spacing the other end of the stripper from the block.

2. A die comprising a block having a base ortion and a orming portion projectiixilg therefrom and adapted to operate on a bla of stock laced thereover and a hinged stripper p ate for the forming portion, the said stripper plate bearing proections that space the stripper plate from t e block.

3. A ,die comprising a block having a base portion and a forming portion projectin therefrom and adapted to o erate o'n a blan of stock placed threover, t

ing p to stripper plate the said sockets to prevent lateral movement of the stripper pl h block.

4. A die comprisin a block having a base portion and a forming portion projectlili therefrom and ada ted to operate on a bl of stock placed ereover, the said base portion being provided with a plurality of sockets, a stripper plate hingedly carried by the forming portion, a plurality of studs se cured to the stripper plate and adapted to enter the said sockets, and resilient means encompassing the said studs and adapted to bear resiliently on the base portion when said studs enter said sockets.

5. A die comprisin a block having a base portion and a forming portion 'projectig therefrom and adapted to operate on a of stock placed thereover, the said hase p0rtion being provided with a plurality of sockets, a stripper` plate hin d y carried by the forming portion, a lura 'ty of studs secured to the stripper p ate and provided heads that are adapted to ent/er the said sockets, and resilient means wider than the said heads and encompassing the studs intermediary of the stripper plate and the said heads.

6. A die comprising a block having a base portion and a forming portion pro1ecting l lll therefrom that is adapted to operate on a blank 4of stock placed thereover, the said base portion being provided on the side that bears the formino# portion with a plurality of c lindr'ical soclkets that enlarge conically at t e said side, a stripper plate hingedly carried by the forming portion, a plurality of studs secured to the strip er p ate and provided with heads that tit s idably in the said sockets, and resilient means borne by the studs intermediary of the stripper plate and the said heads and projecting laterally. beyond the said heads so that the said means may bear resiliently onthe conically enlarged portions of Said sockets.

7 A die comprising a base, a forming die detachably secured to a side thereof, a stripper forthe formingV die pivotally connected to the base so that it may be swung toward the forming die in operable relation thereto, or away therefrom to provide access thereto for 'the purpose of detaching the forming' die from the base, and means projecting u from the .outer side of the stripper for 1ocating a blank to be operated on in proper relation to the forming'die.

signature.

8.v A die comprisin a base plate, a i

.per plate near the free end thereof and' adapted to engage the base plate to maintain the stripper plate in suitable spaced relation thereto.

9. A die comprising a member bearing forming means, a -second member having provisions for locating a blank with relation to the forming means, and a hinge having eachof its flaps connected to a respective one of said members, at least one of the said connections tending to maintain .the members in resiliently spaced-apart relation at the said hinge. Intestmony i whereof I hereunto aix my .CHluzLEs` A. massima, Ja