US1545863A - Ctjttllfg block for die presses - Google Patents

Description

1,545,863 A, J. THOMAS CUTTING BLOCK POR DIE PRESSES Filed Nov. e, 1924 by/MMM each operation of the Patented July 14, 1925.

UNITED -sTATEs PATENT oFE1cE.-

ALFRED J. THOMAS, OF BRAINTREE'I, 'MA-SSACHUSETTS.

CUTTING BLOCK Application led November la strip of material over thel upper face of said anvil in order to secure a new bearing surface for the cutting edge of the die, at

press.

The invention consists primarily of )a metal anvil having secured to its upper face 'a Sheet of fibre board.

The invention further consists in superi. imposing on this sheet oi iibre board, a

strip of material such as paper, and providing means for imparting to said strip, a step by step motion during the operation of the press.

The invention further consists of certain novel 'features ot construction and arrangement of parts which will be understood .readily by reference to the description ot the drawingsand to the claims to be hereinafter given.

For the purpose of'illustrating the invention, one preferred forni thereof is illustrated in the drawings, this form hat/*ingV been found to ,e'ive satisfactory and reliable results although it is to be understood vthat the various instrumentalities of which the invention consists can be variously arranged and organized and the invention is not limited to the precise arrangement and orfanization of these instrunientalities as herein shown and described except as required by the scope of the appended claims.

I 0f the drawings:

Figure 1 represents a vertical sectionof` an anvil er work supporting member embodying' the principles of the present invention, said anvil being shown supported upon the bed of a die press 'and beneath the reciprocating pressure plate thereof,

Figure 2 represents a plan oi said anvil, and l FQR DE PRESSES.

6, 1924. Serial No. 748,077.

Figure 3 represents a section of the anvil on line 3, 3, on Fig. l, said figure being drawn to a reduced scale.

Similar characters indicate like parts throughout the several figures of the drawings.

.lnthe drawings 10 is the bed ci? a die press and 11 the vertically reciprocating pressure member thereof. s the die press forms no part of the present invention and any well known, press may be used in connectionvvith the invention, it is deemed unnecessary to further illustrate said press.

Upon the 'bed 10 is mounted a metal anvil. 12 which is not attached to said bed, but rel,-taiirs the position in whichit may be placed on account of the weight of said anvil,

t '.lhe anvil 12 has a deep depression 1 3 in its iront cud and also depressions 14 in the sides thereof as indicated in Fig. 3.

These depressions 13, 14 arel provided so thata shoe upper may be placed upon the front bportion of the anvil with portions thereof positioned in said depressions, se that the portion to be operated upon may be made to lie flat beneath the die 15 which is used to cut designs in said upper.

It' a block was used with vertical sides it would be impossible to position the upper so that any portion thereof would be tia upon the anvil.

Ilrorder 4to protect the cutting` edges of the die 15 when the dieing out' operationis being; performed. the anvil 12 is' provided with a fibre hoard plate 16 which is secured ,to said anvil by means of the centrally disposed screw 17 about `the axis of which the plate 1G'n1ay be rotated, so that when the forward part of the plate becomes unserviceable the rear part thereof may be moved. into position over the front part of the anvil 12 23 to a receiving roll 2li on which it is wound as said strip is fed thereto.

The Jfeed roll 23 has a ratchet 25 rotatable therewith with which a pawl 26 coacts4 to give a step by'step motion to said feed roll 23. I l l An endless belt 27 from the roll 23 to the receiving roll 24 causes these rolls to rotate in `sunison. y f

'lfhe roll 22 is rovided with means for adjusting it towar and from its companion roll 23 thereb regulating the gripping conwat of the ro 15.22, es Wahine Strip eo.

The pawl 26 is pivotally mounted on a plunger 28 adapted to reciprocate vertically in the chamber 29 of' a cylindrical member 30 mounted on the rear end` of the anvil i2.

Beneath' the plunger 28 is a helical spring 31 tending to force the plunger 28 upwardly.' so that the stem 32 thereof will extent va short 'distance abovethe top of the die l5 so that when the pressure member 11l descends it will strike said stem 32 and force the plunger 28 downwardly against the tension of the spring 31, thereby permitting the paivl 26 to engage a new tooth of the ratchet 25.

As soon as the die 15 is removed from the 'work W, after the pressure member il has moved upwardly, the spring 31-will force the plunger 28 upwardly, causing the pawl 26 to impart a partial rotation to the ratchet 25, and thus feed the strip 20 and wind it upon the roll 24.

A collar 33 surrounds the stem`32 and is threaded to the upper end of thev cylindrical member 30, the lower end of this collar co acting with a shoulder 34 on the plunger 28 to limit the upward movement thereof.

A member 35 threaded to'the lower'end of the cylindrical member 30'is adapted to reo'ulate the'tension of the spring 31.

llhe paper strip 20 is of sufficient thick ness to receive the cutting edges of the die 15 without being cut through, but in case these cutting edges do pass through the i paper strip they will not be injured as they will simply cut into the face of the bre board plate 16.

It -is desirable to always have a flat plane face for the cutting edges of the die to coact with when the work W is being operated upon and by giving the strip 20 a step by step movement at each vcutting operation a new surface is provided `for each-successive operation. n v

This is of considerable importance as by this means a cleaner cut is assured.

lt is believed that theoperation and many advantages of the invention'will be apparent without 'further description.

Having `thus described my invention, l. claim:

l. ln a die cutting bloeit. the combination of a weighted niet-al anvil ik en Lacasse the bed cfa die press; i1 stlrip of flexible vmaterial superimposel'll thereon; and means supported by said aii.i" pfor moving said strip over the surface thelreof.

2. In a die cutting block, the combination of an anvil'freely movable on the bed ot Aa die press; two rolls' mounted in bearings'at the ends of said anvil; a strip of paper on one roll extending over the upper face of said anvil and adapted tobe wound on the other roll; and means actuatedby the pressure member of said press for rotating said receiving'roll.

In la' die cutting blockgxthe combination of an anvil freely movable on the bed of -a die press; two rolls mounted in bearings at the ends of said. anvil; a strip of paperon one roll extending over the upper face of- I l"said anvil and adapted to be wound on the other roll; and means actuated by the pressure member of said press for rotating said receiving roll and feeding the strip thereto. '4. ln a die cutting block, the combination of an anvil freely movable on the bed of a die press, two rolls mounted in bearings at the ends of'said anvil; a strip of paper on one 'roll extending over the upper face of said anvil and adapted to be wound on the other roll; rolls at the rear of the anvil for feeding said strip; `and means actuated J by the pressure member of said press for rollspting said 'receiving roll and feeding ro s. `x

5. Ina die cutting block, the combination 'of an anvil freely movable on the bed of a die press; two rolls mounted in bearings at the ends oi said anvil; a strip of paper-on one y, roll extending over the upper face of said anvil and adapted to be wound on the other roll; rolls for feeding said strip; a

ratchet revoluble with one ofsaid feed rolls;

and a reciprocating pawl coacting with said ratchet and adapted to be actuated by the downward movement ofthe pressure member of said press.

6. ln a die vcutting block, the combina.- tion of an anvil freely movable on thebed of a die press, two rolls mounted in bearings at the ends of said anvil; a strip of paper on oneroll extending over the upper face .of said anvil and adapted to be wound, on

the other roll; `rolls for feeding said stri a ratchet revoluble with one of said fee rolls; a reciprocating pawl coacting with said ratchet and 'adapted to be actuated by l the downward movement of the pressure member of said press; and a spring pressed l plunger carrying said pawl.

7. ln a die cutting block, the combination of an anvil freely movable on'the bed'of a die press; two rolls mounted in bearings at the ends of said anvil; a strip of paper on one roll extending overthe upper face ot said anvil and adapted to be wound on the other roll; rolls for feeding said strip;

' t ratchet momma with one of gaia feea signed by me a@ 14o 01d south Bmg rolls; atreciprocatmg pawl coactmg with Boston, Mass., this 3rd day of O'ctobei1 said ratchet and adapted to be actuated by 1924.

the downward movement of the pressure ALFREIQ J. fmmms.-v

member'of 'lsad press; a spring pressed Witnesss:

plunger can' ing said pawl; and'means for WALTER E. LQMBARD, controlling t e movement of said plunger. NTHAN C. LOMBARD.

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