US282747A

US282747A - Die-press

Info

Publication number: US282747A
Authority: US
Publication date: 1883-08-07
Anticipated expiration: 1900-08-07

Description

I (No Model.)

G. E. MERRIMAN.

DIE PRESS. Y No'.128'2`'7,47. Patented Au'gf, 1883.

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` ATTORNEYS UNITED STATESv PATENT OEE/icm,

GEORGE E. MEEETMAN, oEfrEERYvinLE, CONNECTICUT.`

DIE-PRESS..

SPECIFICATION forming Vpart. of Letters Patent No. dated August '7, 1883a v Application filed April 23, 1888. (No ImodeI.) i Y State of Connecticut, have inventedcertain new and useful Improvements inPresses for Metal-Working; and I dchereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this speciication, and in which- Figurel is a perspective view of a portion of a press used in the manufacture of sheetmetal ware -provided with my improvement, and Fig. 2 is a longitudinal sectional view of the adjustable pitman.

Similar letters of reference indicate corresponding parts in both the figures.

My invention has relationl to presses for m( nufacturing sheet-metal ware, and it consists in the improved construction and combination of parts of an adjustable plunger-operating pitman adapted to be used in drawingpresses, or cutting, punching, or shearing presses, or any other press in whichy adjustment of the plunger or platen is desired, as hereinafter more fully described and claimed.

Inthe accompanying drawings, the letter A indicates aportion of the frame-work of a press, forming bearings B at its upper end for the reception of a transverse crank-shaft, C, having iiy-wheel D, and forming vertical guides or ways E, in which the plunger F slides.

G is the adjustable pitman,- which is hinged by means of a cross-head, H, and cap I to the crank at its upper end, and at its lower end to the plunger by means of a bolt passing through perforated lugs or plates upon the upper side of the plunger and through a transverse bore, J, in the end of the pitman.

The lower portion of the pitman consists of a female-threaded socket, K, in which turns the adjusting-screw L, which is held in place, when adjusted, by means of a'locking-nut, M, turning upon the screw and bearing against the upper edge of the socket. This lockingnut is provided in its outer rim with a series of holes, N, adapted to receive the end of 'an iron bar, serving as handlewhen turning the nut, and the adjusting-screw has an annular head, O, above the screw-threaded portion,

which turns in the socket and' locking-nut, which head is provided with a similarseries of perforations, l?, in its face. Above the head O the screw forms a conical portion, Q, which is continued by a cylindrical portion, R, above the same, which ends in ascrew-threaded portion, S, smaller in diameter than the cylindrical part, and having a transverse perforation, T.

A sleeve, U, having an annular flange, V, at its lower edge and screw-threadedupon the outside, iits over the conical and cylindrical upper portions of screw L, and the outer rim of the flange Vis provided with a series of sockets, W, similar to those in the locking-nut and in the screw-head. A small nut, X, cylindrical upon its outside, is screwed upon the upper screw-threaded end, S, of screw L, rest-r ing with its lower edge upon theupper edge of sleeve U, and is held in placeby a pin, Y, passing through perforations Z in the nut, registering with perforation T in the screw. The upper end of the adjusting-screw, with sleeve U and nut X, is inserted into a socket, a, projecting from the cross-head H, and is screwthreaded at its outer portion, b, tting over the threaded portion of sleeve U, while its inner portion forms a smooth cylindrical recess, C, in which nut X iits and turns. A short screw, d, smooth at its inner end, passes through the side of socket a, and projects with its smooth end into a short transverse slot, e, in the screw-threaded portion of sleeve U, preventing said sleeve from turning more than a small fraction of a revolution.

It will now be seen that when it is desired to adjust the pitman the locking-nut M is loosened and sleeve U unscrewed slightly, which will allow the nut X to turn in its recess, and the entire adjusting-screw with it. When the latter has been adjusted, the locking-nut is screwed down tight against the upper edge of the lower socket, and sleeve U is screwed up hard against nut X, which presses it and the end of the adjusting-screw up against the top of recess c, preventing it from turning, and thus holding it in its adjusted position.

Having thus described my invention, I claim and desire to secure by Letters Patent of the United Statesi l. The combination of the adjusting-screw L, having -lower screw-threaded portion and upper smooth portion, QR, and annular head or nut X at its upper end, socket K, socket a, female-sorew-threaded at its lower portion, b, and forming upper cylindrical recess, c, and locking-sleeve U, fitting upon the upper portion of the adjusting-screw, screw-threaded on the outside and turning in the screw-threaded part of socket a, and bearing with its upper edge against nut or head X, as and for the purposeshown and set forth.

2. The combination of the lower screwthreaded socket K, adjusting-screw L, having head O, conical portion Q, cylindrical portion R, and screw-threaded end S, having perfor-a tion T, cylindrical nut X, having perforation GEORGE E. MERRIMAN.

Witnesses:

N. TAYLOR BALDWIN, GEORGE N. WATERBURY.