US820603A - Die. - Google Patents

Description

NITED sTATEs PATENT clarion.

JOHN ROTH, OFJJERSEY CITY HEIGHTS, NEW JERSEY DIE'.

Specification of Letters Patent.

Patented May 15, i906.

To @ZZ whom it may concern:

Beit known that I, JOHN ROTH, a subject o f the German Emperor, residing in Jersey City Heights, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Dies, of which the following is a specification.

In making cast-metal dies for stamping ornamental metallic articles the die is usually cast in one block of steel or other metal. This ris objectionable, for the reason that the more delicate impressions in the die are not vreproduced clearly and have to be finished by hand before using the die and that the die being cast in one block has small defects in its surface and is expensive, owing to the large quantity of metal required for the same.

The object of my invention is to furnish an improved die or mold in which the body of the die-block is made of cheaper metal, while the die proper is cast in a separate piece of harder metal and secured into the die-block, so that the same form one structure. This permits the casting of a Vdie with all the delicate impressions of the article to be produced by the same, reduces the expense of the die material, and furnishes much better and more ornamental impressions. l

With these ends in view the invention consists in the novel features and combinations of parts, to be hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a perspective view of my improved die, and Fig. 2 is a vertical central section of Fig. 1. t

Similar letters of reference indicate correspondin parts. l

In ma (ing my improved die the main portion or body B of the die-block is made of cheaperv metal and provided in its top surv face with a recess which corresponds to the general shape of the die D, that is to be used in connection'with the die-block B, and said recess is provided with small sockets or cavities, as shown. The die D is cast separately from the main portion B, with the proper ornamentation on the face of the same, so as be used for stamping the, ornamental articles from the same, and provided at its under side with projections or with small cavities or sockets. The under side of the die corresponds with the recess in the top of the dieblock B, so as to leave a space between the same, which for attaching the die D to the block Bis filled up with metal m through a casting-hole at one point of the circumference of the die, as at t in Fig. 1, so as to lill the cavity between the die-block and die and all the small cavities in order to form a connected structure between the die-block and die. The upperedge of the die proper, however, abuts throughout the perimeter of the same, except at the casting-hole t, against that of the recess in the die-block, so that the fusivble metal does not extend quite to the upper surface of the die-block, and therefore forms no part of the upper surface of the die structure. The circumference of the die D is pref erably provided with an undercut, sol as to provide a means for firmly holding the die in the die-block B.

The die D being of even thickness and smaller in size remains true toits shape and reproduces all the finer parts of the original, so that but little hand-work is required for completing the same. It is made of superior metal or alloys-such as nickelesteel, aluminium or silicium bronze, and the like-by which a more durab'le die is obtained and by which the ornamentation can be reproduced in the article to be stamped by the die in a superior manner. When the dieblock and die are united into one structure by the interh mediate layer of cast metal, the die is ready for use. As the die-block is made of cheaper metal, the die can be furnished at much less expense than the dies heretofore in use. It possesses a forming-surface of superior quality by which the ornamental articles can be stamped out in a quicker and more satisfactory manner than by the ordinary cast dies heretofore in use.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- A die comprising a die-,block provided With a top recess, a die proper seated in said recess and abutting at its upper side edge substantially throughout its perimeter against the IOO upper edge of said recess7 said die being unmy invention I have signed my name in presdercut at its circumference, and a layer of ence of tWo subscribing Witnesses. fusible metal between the side and bottom of said die and the side and bottom of said JOHN ROTH' 5 recess for uniting said die and die-block in Witnesses:

one structure. PAUL GOEPEL,

In testimony that I claim the foregoing as HENRY J. SUHRBIER.

Images