US761792A - Roller-die. - Google Patents

Description

No. 761,792. PATENTED JUNE 7, 1904.

- 0. H. SUCH & T. HEATH.

ROLLER DIE.

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I 1 y V 4 UNITED STATES Patented June '7, 1904.

PATENT OFFICE.

CHARLES H. SUCH AND THOMAS HEATH, OF PROVIDENCE, RHODE ISLAND.

. ROLLER-DIE.

SPECIFICATION forming part of Letters Patent No. 761,792, dated June 7, 1904.

Application filed October 28, 1902. Renewed November 7, 1903. Serial No.180,2'79. (No model.)

To all whom, it may concern:

. Be it known that we, CHARLES H. SUCH, a citizen of the United States, and THOMAS HEATH, a

subject of the King of Great Britain, both residing at Providence, in the county of Provi-- dence and State of Rhode Island, have invented certain new and useful Improvements in Roller-Dies, of which the following is a specification.

Our invention relates to rolls adapted to figure stock for use-in jewelry, silverware, and kindred trades. i

Heretofore it has been customary to provide the periphery of roller-dies intended for the purpose specified with an engraved figure intended for transfer to the stock fed. In such cases the effects attainedv have been satisfactory when it only desired that the entire face of a flat strip of metal be ornamented; but such figured stock is seldom or ever demanded in the arts at present, but rather an ornamented strip whose margins shall be irregular to conform to the outline of the ornamentation of the strip. The method in vogue formaking this stock is to put it through rolls whose peripheries bear a centr al annular ornamentation, but which are otherwise blank. The wire after subjection to this operation is of substantially uniform thickness throughout, and there are blank margins upon each side of the ornamentation. It is next necessary to trim away these margins, which is done by means of a gang of punches specially cut to conform in each instance to a section of each particular design which it is desired to segregate. This method obviously involves great expense and labor and frequently work of inferior appearance.

Our invention is purposed to eliminate the necessity of the expensive step of cutting above outlined by means of a specially-con structed roll hereinafter described, and illustrated in theaccompanying drawings, where- 1n Figure l is a perspective view of an ordinary strip of flat or graded stock prior to passage through the rolls; Fig. 2, a similar view of the same after passage through the rolls and after the blank marginal portions have been partially removed from the ornamental portion, and Fig. 3 is a side elevation of our new roll mounted upon an arbor operating in conjunction with a flat roll upon a flat or graded strip of stock.

Like letters of reference indicate like parts throughout the views.

Our roll -A is provided with flat annular marginal shoulders a a. Intermediate these the periphery bears the annular depressed cutting of whatever ornamentation b is desired. The marginal edges of the annular ornamentation c are peculiar in that they are themselves cutters. This cutting effect is attained by inclining those portions of the roll-periphery 0? intermediate the ornamentation 5 and the shoulders a upwardly in such a manner that their surfaces if continued would converge. The intersection of the surfaces (Z with the marginal lines 0 of the ornamentation, which is vertically cut, produces two upwardly-directed acute angles or cutting edges 0 in the same or a slightly lower horizontal plane thanthat of the flat annular shoulders a. The effect of this roll upon the stock is shown in Fig. 3, wherein our newroll A, splined upon an arbor B, rotates in conjunction with a companion roll C, whose surface bears upon the surfaces of the shoulders a and upon the surface of the strip of stock D which is being fed to the rolls.

The result of the interaction of the rolls'A and C upon the blank is shown in Fig. 2 to be a central ornamented strip flanked on either side by marginal stripsf. It will be noted that these marginal strips while thick at their outer edges are extremely thin ad a- I cent the ornamented strip or in places entirely P severed therefrom.

To complete the wire requires only that the marginal or waste strips f be severed from the ornamented strip 6 by manually tearing or breaking the former from the latter, which operation is shown in progress in Fig. 2.

Having thus described our new roll, we claim as new and desire to secure by Letters Patent 1. In a roller-die, the combination with an annular channel of an ornament recessed in line constitutes a cutting edge, of a transversely-inclined annular surface extending dmvnwardly and from the cutting edge toward the face of the die, and annular peripheral shoulders on each side of the annular figure.

In testimony whereof we have afiixed our signatures in presence of two witnesses.

CHARLES II. SUCH. THOMAS ll lCA'll l. Witnesses:

HonA'rIo E. BuLLows, EBENEZER UALLAIIAN.

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