US153885A

US153885A - Improvement in dies for forging lathe-dogs

Info

Publication number: US153885A
Authority: US
Publication date: 1874-08-11
Anticipated expiration: 1891-08-11

Description

' 2Sheets- -She I E. BILL-INGS. Dies fur Forging Lathe-Dogs.

v Patented Aug.11,1874.

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UNITED STATES PATENT OFFICE.

CHARLES BILLINGS, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE BILLINGS 8U SPENCER COMPANY, OF SAME PLACE.

IMPROVEMENT IN DIES FOR FORGING LATHE-DOGS.

Specification forming part of Letters Patent No. 153,885, dated August 11, 1874; application filed July 24, 1874.

[0 all whom it may concern Be it known. that I, CHARLES E.B1LLINes, of Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Dies for Forging Lathe-Dogs; and I do hereby declare that the following is a full, clear, and exact description thereof, whereby a personskilled in the art can make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

Like letters in the figures indicate the same,

parts.

The object of my invention is to provide dies which shall easily and quickly forge the parts of the lathe-dog hereinafter described, so that they shall be of the proper form for finishing without further forging or shaping by hand.

My invention consists in the construction and arrangement of the several parts of the dies, and in the manner of manipulating the metal therein- Figures 1 and 2 are a front and side view of the first pair of dies, and Fig. 3 is a top view of the lower die of Fig. 1 and Fig. 4. is a view of the under side of the upper die of Fig. 1. Fig. 5 is a top view of the lower finishing-die to be used after those shown in the preceding figures, and Fig. 6 is a view of the under side of the corresponding upper die. Fig. 7 is a cross-section on the lines my of Figs. 5 and 6. Figs. 8 and 9 are a side and front view of the finished lathe-dog, the parts of which, with the exception of the bolts, are intended to be forged in the herein-described dies.

This dog consists of two parts, A and B, attached together by adjustable bolts, and of similar form, except that the part A is provided with the arm a. The parts A and B are formed from a bar of iron, of the proper size, and heated in the usual manner, as follows The bar is first struck in the groove C, which reduces the end to the proper size to form the hook to. It is then struck in the formers D, which bends the bar to the proper angleto form the hook, and at the same time starts the web or projection e and the depressions 0 c. The bar is then struck in the groove E, which further gives form to the bar upon sides at right angles to those acted upon-in D. The bar is struck alternately in D and E several times, each operating upon different sides of the bar at right angles to each other until it is brought to the proper shape for the finishing-dies. The formers D and E are made without sharp edges where the two parts of the die meet, so as not to form a web or flange, but are open so as to allow the metal to take its form by alternate forging on opposite sides. The bar is then struck in the finishing-dies F, which completes the process and leaves the parts ready for the necessary fitting and polishing. their final and proper form. The other part, B, of the (log is forged in the same manner and in the same dies, although it has not the angle or projection a. This is done by omitting the drawing out and bending up of the angle in the parts C and D of the dies. The part B is then exactly like the part A, except in not having the hook at.

What I claim as my invention is The herein-described dies for forming the parts A and B of the lathe-dog, substantially as specified.

CHARLES E. BILLINGS.

Witnesses:

GEO. P. GEER, THEO. G. E LIs.

In these dies the parts a c" d 6 receive-