US468064A - Cable-grip-adjusting device - Google Patents

Description

N0 Model.)

H. H. LYNCH.

CABLE GRIP ADJUSTING DEVICE.

No. 468,064. Patented Feb. 2, 1892.

UNITED STATES PATENT OFFICE.

HENRY II. LYN OII, OF SAN FRANCISCO, CALIFORNIA.

CABLE-G RI P-ADJ U STING DEVICE.

SPECIFICATION forming part Of Letters Patent N0. 468,064, dated February 2, 1892.

Application filed August 19, 1891. Serial No. 103,122. (No model.)

To (LZZ whom it may concern:

Be it known that I, HENRY IL LYNCH, a citizen of the United States, residing in the city and county of San Francisco, State of California, have invented an Improvement in Cable-Grip-Adjusting Devices; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to a device for adj usting cable-grips; and it consists of a takeup mechanism applied to the griplever and its connection with the stationary frame, whereby the wear of the gripping-dies may be compensated and the are over which the lever is moved to open and close the grip remain substantially the same at all times.

Referring to the accompanying drawings for a more complete explanation of my invention, Figure 1 is a side elevation showing the application of my invent-ion. Fig. 2 is aperspective view of the cross-head and the operating-screw.

A is the frame, which is bolted to supporting-timbers upon the car and which carries a part of the grip-actuating mechanism at the lower end.

B is a flat plate sliding between the sides of the frame A,which serves as guides therefor, the lower end of this plate acting in conjunction with the stationary portions of the frame to open and close the gripping-jaws so as to release or grip the cable. The gripping-jaws may be of any of the usual or known forms, and are not here shown.

C is the quadrant, which has its lower end bolted to the top of the plate B.

D is a lever, the lower end of which is secured in the socket D, the latter being fulcrumed to the lower part of the quadrant C, as shown at E.

F are links, the lower ends of which are fulcrumed to a pin or bolt in the top crossbar of the frame A, there being one of these links upon each side, and they extend up on each side of the lower part of the quadrant C, and are connected with the sliding block or cross-head G. This cross-head is adapted to travel in the slot II, which is made in the socket-piece D, and by moving this crosshead up or down, the lever and the quadrant upon which it is carried will be correspondingly moved to or from the stationary supporting-frame A.

It will be manifest that this movement, carrying with it, as it does, the plate B, will move this plate with reference to the lower part of the frame A, and will thus adjust the relative position of the parts which actuate the gripping-dies. In order to make these adjustments, ithas hitherto been customary to employ a screw, which is situated beneath the floor of the car, and the gripman is obliged to get down to this point with a wrench to make the adjustments.

In my invention the cross-head G has a hole made through it and a screw-thread cut therein within which the screw I is fitted to turn. The lowerend of this screw is stepped in the lower part of the guide-opening II, in which the cross-head G travels. The head I at the upper end of this screw abuts against the upper part of the opening II and has a square socket J made in the end of it.

K is a rod, the lower end of which is made correspondingly square to fit into this socket. This rod extends up alongside the handle D, and its upper end is-stepped in a lug or bar L, which is secured to the handle D near the upper end.

K is an enlarged head having radial holes made through it, as shown, and by means of a short pin fitting these holes the rod K maybe turned around, turning with it the screw I, and thus advancing the cross-head G in either direction upon the screw. By this construction it is rendered easy for the gripman to adjust the parts to the constant wear of the gripping-dies and without stopping or taking his attention off" his business.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

In a cable-gripping apparatus, the main stationary frame, the quadrant and quadrant-plate adapted to slide upon said frame and actuate the gripping-jaws at the lower end, a lever fulcrumed upon the quadrant and movable about its fulcrum, a cross-l1ead slidingin a slotted guide upon the lower end of the lever, links connecting the cross-head with the stationary frame, a screw extending longitudinally from end to end of the slot and passing through the cross-head and having rant and connected parts are correspondingly its upper end formed with a square socket, a moved with relation to the fixed portion of rod having the lower end made square and the grip-frame, substantially as herein deadapted to engage the square socket in the scribed. 15 5 upper end of the screw, said rod extending In Witness whereof I have hereunto set my to the upper end of the grip-lever and having hand. a journal-box or step in which it turns, and a head with means whereby the rod may be turned and motion communicated from it to Witnesses: [O the screw, whereby the cross-head is moved S. H. NOURSE,

up or down upon the screw and the quad- J. A. BAYLESS.

HENRY H. LYNCH.

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