US174896A - Improvement in machines for polishing buttons - Google Patents

Description

2 Sheets-Sheet-I.

P. CAHILL.

MACHINE FOR POLISHING BUTTONS. No. 174,896. Patented March 21,1876.

2 Sheets-Sheet Z.

P.CAHILL MACHINE FOR POLISHING BUTTONS.

Patented March 21,1876.

N. PETERS, FHOTO-UTHOGRAPHER, WASH NGTON D C against the periphery of carrier-plate o- 'polished rest upon the top of shaft 3 under Urvrrnn STATES PATRICK OAHILL, OF LEEDS, MASSACHUSETTS, ASSIGNOR TO GEORGE P.

WARNER, OF SAME PLACE.

f IMPROVEMENT IN MACHINES PATENT Crrrcn,

FOR POLISHING BUTTONS.

Specification forming part of Letters Patent N 0. {74,896, dated March 21, 1876; application filed February 25, 1876.

To all whom it may concern Be it known that I, PATRICK OAHILL, of Leeds, in the county of Hampshire and State of Massachusetts, have invented certain new and useful Improvements pertaining to a Button-Polishin g Machine, of which the following is a specification, reference being had to the accompanying drawings, where- Figure l is a side view. Fig. 2 is a front view. Fig. 3 is a top view. Fig. 4 is a partial section on plane as m. Fig. 5 is a top view from plane at m. Fig. 6 is a detail view in central vertical section of shaft 3 (hereinafter referred to,) modified for certain purposes.

This machine is intended for polishing buttons of vegetable ivory or other proper material.

The lettera denotes the table of the ma chine; b b, uprights; 0, main shaft; d, pitman from crank on main shaft giving vertical reciprocation to cross-head 6, bearing the punchdie 1''.

Pin 7; on disk 9 gives reciprocation to pivoted lever i, and, through the medium of connecting-rod k, to slide 1, on which is pivoted the pawl m, pressed forward by spring a which rotates on pin ptaking iutonotches r, so as to give step-by-step rotation to the" carrier-plate, which rests on plate 8, and contains the button-sockets it, into which the button blanks are fed, and, after being operated on, escape through the trough or pipe u.

The carrier-plate is held locked at proper intervals to allow the buttons to be operated on by the pawl v, pressed forward by spring to. This pawl is unlocked from its hold on the carrier-plate at proper intervals,'to allow the stcp-by-step rotation, by the shoulder l on slide Z.

Under the table is hung the vertical shaft y rotating from shaft 2 through the medium of gears a b. The lower hearing or step c for shaft y is upon plate d, underneath which is spring 0-, the purpose and office of which is this: The buttons while being pressure of die f. These buttons vary in thickness somewhat, even when out at first to uniformity, on account of unequal expansion or contraction in subsequent drying, and when a thick button comes under the polish-' ing operation the spring 0 allows shaft y to give, and, to prevent breaking the button or straining the machine, the strength of the resistance of spring 6 is regulated by nuts f on bolts g. Nuts h hold plates d to proper elevation.

Shaft 91 rotates continuously, and as the carrier-plate brings the buttons one by one under operation over and upon the end of this shaft, the carrier-plate there stops for a proper interval, the punch-die f descends and presses upon the button, and the upper end of shaft y being roughened the button revolves with it, and thereby the upper face of the button is polished by rotation against the smooth face of the punch-die. The punch-die then ascends, leaving the button in its socket, and the button moves on.

If the button chance to adhere to the punch-die, it is detached by means as follows: Inside the punch-die is the extractor'rod i pressed upward by spring j As the punchdie commences to ascend, the vertical arm of the pivoted bell-crank lever j -carried on the cross-head-strikes against bar is, pushing the lateral arm downward, and thereby causing the extractor to project from the punch-die, and so detach the adhering button.

I have found that buttons with full back and thin edge and flat, or nearly flat, top will not always readily move out of the die which is on the top of shaft y, and when they do not they, are apt to be caught and broken by the rotating carrier-block. To obviate this difficulty with such buttons, I construct the top of shaft y as shown in central section in Fig. 6, where y denotes the shaft in which is set the extractor m pressed upward by spring it, kept from rising too high by the cross-pin 0 running through the mortise p, and from falling too low by the shoulder m abutting on the shoulder y.

I claim as my invention-- 1. In combination, the non-rotating die j,

the rotating die y, and the spring 0, substanplate 0, rotating shaft y, and extractor m all tially as described, and for the purpose set substantially as described, and for the purforth. pose set forth. 2. In combination, the reciprocating die f, extractor i, and operating lever j all substantially as described, and for the purpose Witnesses:

PATRICK CAHILL.

set forth. H. K. PARSONS,

3. In combination, the rotating carrier- R0131. H. PEASE.

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