US1872A - Improvement in the manner of forming oblique catches, protuberances - Google Patents

Description

'NITED STATES PATENT OFFICE.

JORDAN L. MOTT, OF NEW YORK, N. Y.

` IMPROVEMENT IN THE MANNER OF-FORMING OBLIQUE CATCHES, PROTUBERANCES, AND DOVETAILED FASTENINGS ON PLATES AND OTHER PIECES 0F CAST-IRON, &c.

Specification forming part of Letters Patent No. 1,872, dated December 1, 1840.

To @ZZ whom, it may concerns Be it known that I, JORDAN L. Mori?, of the city of New York, in the State or" New York, have invented an improvement in the manner of forming dovetailed or oblique catches or projections on plates or other pieces cast from iron or other met-al, said catches or projections being such as are required and used for holding latches, the retaining of stovei`eet, dovetailed wedges on railroad-chairs, and for a variety of purposes similar in character and well known to founders; and I do hereby declare that the following is a full and exact description thereof.

The ordinary modes of forming projections for the catches to latch or to retain in place the doors or other parts of stoves, and of forming the dovetailed grooves for receiving and retaining` the legs of stoves and of producing projections on cast articles for numerous other purposes, havev been by the use of sand cores or of movable pieces on the pattern, which pieces are taken from the mold after the re'- moval of the main plate or piece of casting. Instead of employing these or similar devices, Iinake holes through the pattern in the part where such projections are to be formed, or through a plate or piece of metal or of wood, which may be laid upon the proper part of the mold after the main pattern has been removed, and through these holes I force a punch or piece adapted thereto which is to be so formed as to make an impression in the sand of the exact form required, by which means said impression will be produced with much greater facility and truth than by any of the methods heretofore used or known.

In the accompanying drawings, Figure 1 represents a piece of wood or metal by which the impression is to be made in the sand,andFig.

v2. the plate or portion of apatternV having holes through it adapted to the impression to be inade.

A, Fig. 1, is the handle part of theppunch or piece which is to make the impression,and

ffthe portion which is to enter the holes prepared therefor in the pattern or plate.

In Fig. 2, e e represent such holes, and ccthe catches or projections, which may be formed on a plate by the part f, Fig. 1. By reversing the two inner projections, cc,they would, in conjunction with the two outer ones, constitute a dovetailed opening, which would reamong founders to form depressions in the sand by pricking through holes made in the patterns for that purpose, so as to produce pins or shanks on the casting to be obtained, and I do not, therefore, claim the so doing as of my'invention; but it has never been attempted, as I verily believe, to form catches, dovetailed openings, and other devices of a like character by means of an apparatus Such as I have described.

What I claim, therefore, as constituting myv invention, and desire to secure by Letters Patent, is-

The manner herein described of forming such catches and projections by means of a punch or piece properly formed for the purpose, there being corresponding openings through the pattern or through a plate adapted thereto, as herein fully set forth.

JORDAN L. MOTT.

Witnesses:

Trios. P. JoNns, Roer. T. BUNKER..

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