US90596A - And trimming- metal - Google Patents

Description

@atent (attire.

SAMUEL SIMPSON, OF WALLINGFORD, CONNECTICUT, ASSIGOR TO SIMPSON. HALL, MILLER & CO.

Letters Patent No. 90,596, dated Muy 25, 1869.

IMPROVE) DIE' FOR RAISING--AND -TRIMMING- METAL.

The Schedule referred in these Letters Patent and making part of the same. l

To dllwhom it may concern Beit known that I, SAMUEL Simpson, of Wallingtford, in the county of New Haven, and State of Connecticut, have -invented a new Improvement in Raising andy Trimming-Die for Sheet-Metals; and I do hereby declare the following, when taken in connec-tion with the accompanying drawings, and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent in- Figure 1, a perspective view of the die as used for striking up metals, and in Figure 2, aperspective view ofthe die,vthe auxiliary part shown in Figure 3, removed.

This invention relates to an improvement in the manufacture of sheet-metal ware, especially designed for the manufacture 'of ware preparatory to plating;

that is, to the formation of disks for covers, dishes,

Heretofore, this has been done by striking thei form, and trimming it' by the 'application of a cutterthereto while so revolving; `but in oval, or other than circular shapes, the trimming must be done by hand, and is a very diiicult part of the work, the simplification of which is ,the object of my invention, which consists in forming the die in which the metal is struck up, in two parts, the principal part of which is of the exact form and size required for the article when complete.

The other and auxiliary part is an addition placed upon the top of the die, and corresponding in form to the'upper edge of the die, so that the surplus metal is drawn into form,'to be merely an extension of the article.

The follower is dropped or struck into .the die in the usual manner; then, when the requisite numberof articles have been struck up, the auxiliary part of the die is removed, and each of the articles successively replaced in the die and trimmed, the upper edge of the die serving as a guide to directl the cutter.

'Io enable others to make and use my invention, I will fully describe the same as illustrated in the accompanying drawings. f

A isv the principal part of .the die, the recess B being of the form and size required for the article to be produced. y 1 Y Y z (l, the auxiliary part, is placed over and secured to the principal part of the die, t-he opening D, therein, corresponding exactly to the principal part A, as seen in iig. 1. In this condition 'the metalfis placed upon and struck into the die bythe follower in the usual manner, and when thevl'equisite' number of articles have been formed, then the part'C is removed from the part A, leaving the part A as seen in tig. 2. When the articles areeach successively replaced in the die, theupper edge of the Y,die serving as a guide, the cutter' is passed around, trimming the article flush with the edge of thcdie, thus insuring the perfection ofthe work at a single operation, and Without other' trimming. l

Having fully described my invention,

What I claim as new and useful, and desire to se cure by Letters Patent, is

In a die for raising sheet-metals, constructing the same in two parts, A and C, the part O removable from the part A,` for the. purpose set forth.

SAMUEL SIMPSON.

vWitnesses:

ANDREW ANDREWS, MONROE BENHAM.

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