US3930A

US3930A - gardiner

Info

Publication number: US3930A
Authority: US
Publication date: 1845-02-28
Anticipated expiration: 1862-02-28

Description

UNITED STATES PATENTA OFFICE.

.1?. G. GARDINER, OF NEY YORK, N. Y.

IIVIPROVEMENT'IN COTTON AND OTHER PRESSES.

Speciicaiion forming part of Letters Patent No. 3.930, dated February 2S, 1845..

.T0 all whom t may concern.-

Be it known that I, P. G. GARDINER, of the city, county, and State of New York, have invented a new and useful Improvement in Presses for Cotton, Ste.; and I do hereby declare that the following is a full, clear, and

exact description thereof, reference being had to the accompanying drawings, in which- Figure lis a front elevation of the press. Fig. 2 is an end elevation.'v Figs. 3 and 4 represent a modified construction.

. The nature of my invention consists of the combination of an indicator or guide connected with the combined screw and toggle-joint, as hereinafter described.

The construction of the `frame-work a a of my press may be similar to those now in common use, care being taken to make them strong enough to sustain-the strain brought upon them. Two toggle-joint levers, b b b b, are connected with the head of the press, toward each end thereof, at their upper ends, and by their lower ones to a follower or platen, c. At the center joints, d, where the upper and lower arms, b, of thetOggle-j oints connect, are nuts or blocks of metal having a female screw through their centers, and alsoforming a part of the connection between the upper and lower arms, b, above named. There may may be a solid block, as represented in Figs. 1 and 2, having two nicks or knuckles cut out of it above and below, between which to receive the knuckles on the arnis'b; or the nut may be made cylindrical and small, as shown in Fig. 3, having two trunnions, e, projecting from it, which serve as the joint-pin.

The nuts above described are pnt onto a screw, f, that extends horizontally across the press, from one to the other side thereof. This screw is cnt right and left from the center, so that when it is turned one way it straightens thelevers b b and forces the platen down, and when the motion of the screw is reversed it elevates the platen. This is an old device, but it has heretofore been found impossible to make any practical use of it, for if the platen moved faster at one end than the otherit would break all the machinery. My improvement to obviate this difficulty is as follows: On each side of the pulley g, situated inthe middle of the screw, and by which it is driven, are two guides, h, that I denominate carriages or indicators. These are oblong blocks, having holes through them big enough to pass the screw through. They bear against the hub of the pulley above named. These carriages have four wheels, i, to them, two only of each being shown in Fig. l, which wheels traverse up and down with the carriage as the screw rises and falls, run ring on ways 7c, that are attached to the beams of the press. These ways 7c are made ofiron, cast with a slot in them (shown in part in Fig. 2) forthe screw to traverse in, and are firmly bolted in a vertical position to the braces of the press. As a modification of this arrangement the ways can be placed near the ends of the screws and the carriages attached to the ends of the screws, as shown in Fig. 4.

Having thus fully described my 'improve ment, what I claim therein as' new, and desire to secure by Letters Patent, is*- The combination of the guide carriages or indicators on each side ofthe pulley with the screw and lever power-press, to prevent the lateral motion, while it allows a ii'ree vertical action, all as above described.

P. G. GARDINER.

'Vitnesses:

J. J. GREENOUGH, LAFAYETTE CALDWELL.