US514192A

US514192A - Railway-signal

Info

Publication number: US514192A
Authority: US
Publication date: 1894-02-06
Anticipated expiration: 1911-02-06

Description

(N077 Model.)

A.v H. JOHNSON. RAILWAY SIGNAL.

N0. 514,192. A Patented Feb. 6, 1894..

ms M'num Lmmwumua cow-Ann WASHINGTON. n. c.

UNITED STATES PATENT OFFICE.

ARTHUR H. JOHNSON, OF RAHWAY, NEW JERSEY.

RAILWAY-SIGNAL.

SPECIFICATION forming part of Letters Patent No. 514,192, dated February 6, 1894.

Serial No. 475,201. (No model.)

To all whom it may concern:

Be it known that I, ARTHUR H. JOHNSON, of Rahway, in the county of Union and State of New Jersey, have invented a new and useful Improvementin Railway-Signals, of which the following is a specification.

My invention relates to an improvement in railway signals and more particularly to low signals, commonly termed dwarf signals, intended to be located along the track in proximity to the rail.

The object is to provide a semaphore signal of the above character which shall be simple in structure, durable and not liable to unintentional displacement.

A practical embodiment of my invention is represented in the accompanying drawings in which- Figure 1 represents the signal in side elevation, as it appears when looking at it along the direction of the track by the side of which it is located. Fig. 2 is a view in end elevation, or as it appears when looking at it in a direction transverse to the line of track, and Fig. 8 is a top plan view of the signal.

The signal post is represented by A and is provided at or near its upper end with a cross head a. in which a rock shaft or spindle B is journaled in a position transverse to the post A. The spindle B has fixed to one end the semaphore arm O with its bulls-eye c, and to the opposite end of the spindle B there is socured the combined alligator jaws and spectacle for operating the semaphore arm and for affording a peep at the light from a direction opposite that toward which the bullseye faces. The alligator jaws, of ordinary structure, are represented by d, d and the spectacle, the frame of which may be formed integral with or fixed to the shank of the jaws, is denoted by D. The counterbalance three-armed lever is pivotally secured to a stud E projecting laterally from the signal post, one arm f of the three-armed lever being provided at its end with an anti-friction roller G in position to engage the opposite faces of the, jaws d, d to operate the signal, another arm of said lever f extending in a direction opposite the arm ffor the attachment of the signal operating wire or rod, as is usual, and the third arm F of said lever being provided with a counterbalance weight 9 adjustable thereon for automatically throwing the signal to danger whenever its control by the ordinary signal wire or rod is disturbed either by the breaking of the wire or from any other cause.

A support H for the adjustment of the lantern intermediate of the bulls-eye c and the spectacle D, is secured to the side of the post A.

By locating the alligator jaws and spectacle on the spindle of the semaphore arm, I am enabled to bring the working parts into such a compact form as to render it feasible to utilize said alligator jaws in connection with a dwarf signal, which is commonly built about two feet high. The efiective lock formed by the counterbalanced lever in connection with the alligator jaws, while allowing sufficient lost motion to account for the expansion and contraction of the signal operating wire or rod, is thus made use of to great advantage and without any complicated mechanism.

- The operation of the signal is obvious from the foregoing description;

What I claim is- 1. The combination with the semaphore arm, and the operating lever, of the alligator jaws pivotally secured to rock with the somaphore arm and engage with one arm of the operating lever, substantially as set forth.

2. The combination with the semaphore arm having its bullseye fixed to rock therewith and the alligator jaws having a spectacle fixed to rock therewith, the semaphore arm and the alligator jaws being mounted to rock in unison, of a counterbalance operating lever pivotally secured in position to engage and operate the alligator jaws and hence the signal, substantially as set forth.

ARTHUR H. JOHNSON.

Witnesses:

FREDK. HAYNES, F. HOWARD TITLAR.