US1116799A - Railway-signal. - Google Patents

Description

J. B. GASSELMAN.

RAILWAY SIGNAL. APPLICATION FILED JAN. 31, 1914.

1,1 16,799. Patented Nov. 10, 1914.

IN l/E IV TOR W ATTdRA/EV WITNESSES:

'H' NORRIS PETER: 60.. PHOTO-LIT!" 1 WASHINfimN, t). c

JOHN BYRON CASSELMAN, OF OAKLAND, CALIFORNIA.

RAILWAY-SIGNAL.

' Specification of Letters Patent. Patented NOV. 10, 1914:.

Application filed January 31 1914. Serial No. 815,635.

To all whom it may concern.-

"Be it known that 1, JOHN BYRON Gasser.- MAN, a citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented certain new and useful Improvements in Railway-Signals, of which the following is a specification.

This invention relates to improvements in automatic train signaling devices and more particularly in the construction of the semaphore and associated parts used on those signal systems employing an auxiliary or tripper arm to engage a valve arm or other device for automatically stopping-the train in case the signal is passed.

The principal object of this invention is to provide a tripper arm, which will operate from the stop position to clearance position, and from clearance position to stop position without any change in the position of the semaphore arm and yet provide arm to assume the horizontal, or stop posi- I means so that the tripper arm can never be in the stop positiom'the position that would engage the car valves, with the semaphore arm in the proceed position.

Another object is to allow the semaphore tion as soon as the first truck of train has passed the signal and hold the tripp'er device in .the clearanceposition for any detel-mined length of time, as until the last car truck has passed the signal. vWith the present system the semaphore arm and tripper are held in the proceed position until the train is a determined distance past the semaphore. Nith this arrangement a switch might be opened, or alrail broken. or a train occupy this distance and the semaphore arm would indicate a wrong condition of the section of track of which the semaphore governs. lVith my improvement therecould be no danger of such an occurrence for the semaphore arm would be brought to its stop position by the occupy-.

ing train while the tripper arm is retained above the stop position until after the, train has passed the signal. By being able to control the movement of this tripper device incially serviceable when it is necessary to Denoting correspon run trains in the opposite'directionto which the signal was tobe operative, a condition often met with when one track is undergoing repairs. x i.

' Theuse of this device would decrease the costs of car valve equipment, for the tripper device being clear of the car .valves when running against the current of traffic wouldlessen theconstruction cost of a proper valve to take care of the-brake ap plication. The'car valveneed onlybe constructed'to take care of the application of brakes, when they come in contact with this tripper device, while at present they are designed to apply the brakes when struck in one direction and when struck in opposite direction to receive the blow but'not to apply brakes. This complicates the. construction of satisfactory valves and byconstructing valves that. apply the brakesirrespective of the direction in which the train Figure l is a partly broken view in front elevation of a semaphore signal constructed is running when struck would allow of the in accordance-with my invention Fig, 2'

is a view in section on X.X Fig. 1. Fig. 3 is an enlarged horizontal sectional view through the top of the signal standard. Fig.

4 is a view in section of the glass valve 3 which is broken by the tripper arm of my. signal when a train attempts to pass the same when ,set at danger. Fig. 5 is a; view; insectlon of the mechan sm valve for ac-- complishing the same urpose. a

d ing parts by the same numerals of reference, 1 denotes a hollow, standard having the enlarged base 2 wherein is locatedthe mechanism for operating the signal and which it is not deemed necessary to illustrate 'as the same forms no art of this invention. Adjacent the top of pole 1 is a pair oflaterally extending lugs;3, be-

tween which is an opening 4:, providing access to the interior of the pole. Plvotally mounted in the lugs 3 is a pintle 5 having indicating arm 9 and adjacent this bracket a lens segment 10 is keyed to the shaft and is provided with a segment slot 11. Bracket 8 is provided with a laterally extending pin 12, which extends into the slot 11 providing a driving connection for the semaphore arm. The bracket8 is also provided with a rearwardly extending lug 13 which contacts with a stop pin it in the post 1 and serves to prevent the indicating arm from dropping below the horizontal position.

The lens segment is provided with lenses 15, 16, and 17 the first being of a color to indicate proceed, the second caution, and the third stop. It will also be noted that lens 17 is elongated for the purpose which will be later described.

Below the semaphore is pivotally mounted an arm 18,which under certain conditions contacts with the device 19 on'the car roof 19 and by contact therewith automatically brings the train to a stop. The device 19 may be a lever operated valve and so releases the train line air pressure or a glass tube, which is broken and accomplishes the same result. The arm 18 is connected to the lens plate 10 by a link 20, which is pivotally mounted on a pin 21 projecting from the plate 10 and a pin 22 adjustable on the arm 18.- A lamp 23 is mounted on a suitable bracket-24c so as to show through the various lenses.

In operation four positions of rest are provided for pintle 5 and its attached parts; 1st, lens 15 in front of lamp 23, which throws arm 9 in an upward vertical position and arm 18 close to the pole; 2nd, lens 16 in front of lamp 523, arm 9 and l8ina position approximately 15 degrees to the pole; 3rd, the position as shown in Fig. 1 with the lower part of lens 17 in front of the lamp the semaphore arm 9 in a horizontal position and arm 18 somewhat above the top of device 18; 1th, the upper art of lens 17 in front of lamp 23 and the ens plate and arm 18 occupying the position shown in dotted lines in Fig. 1. During the movement to assume the last position arm 9 remains stationary by reason of'lug 13 engaging pin 14 and also while the pin 12 moves along slot 11.

While I have shown the preferred embodiment of my invention it will of course be understood that changes may be made in minor details and form of construction without departing from the spirit thereof.

What I claim is 1. A signal comprising a pivotally mounted tripper arm, means operatively connecting said tripper arm with the actuating mechanism of the signal, a pivotally mounted semaphore arm, a slotted connection between the actuatingmechanism of said signal and said semaphore arm, a stop to limit the movement of said semaphore arm and allow the further movement of said tripper arm after said semaphore arm indicates stop.

2. In a signal comprising the combination of a suitable supporting standard, a shaft pivotally mounted therein adjacent the top thereof, an operating lever keyed to said shaft, a semaphore arm pivotally mounted .on said shaft, a; lens carrying segment keyed ried by said semaphore arm adapted to en gage a pin carried by said standard for limiting the downward movement of said semaphore arm, a lens segment keyed to said shaft, a link pivotally connected thereto, and to said tripper arm, a segmental slot in said lens segment, a pin carried by said semaphore arm projecting into said slot and so positioned as to allow the further movement of said lens segment and connected tripper arm after the movement of the semaphore arm has been arrested by said stop.

4. A signal comprising a pivotally mounted semaphore arm, a lens segment open atively connected to the actuating mechanism of said signal, a pivotally mounted tripper arm, a link connecting said tripper arm and said lens segment, a stop limiting the movement of said semaphore arm, and a loose connection between said semaphore arm and said lens segment to permit the further movement of said segment and attached tripper arm after the semaphore arm indicates stop.

In testimony whereof I afi'ix my signature in presence of two witnesses.

JOHN BYRON CASSELMAN.

l/Vitnesses:

W. A. STOCK, R. M. OYARZO.

Copies 01' this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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