US1073018A - Signaling and telephone system for railroads. - Google Patents

Description

r w. J. BAILEY. SIGNALING AND TELEPHONE SYSTEM FOR RAILROADS.

APPLICATION FILED DEG.18, 1912.

Patented Sept 9, 1913.

wanna M46, MM

'WARDER a. BAILEY,

F CEDARVILLE, WEST VIRGINIA.

SIGNALING AND TELEPHONE SYSTEM son RAILnoans.

Specification of Letters Patent.

Application filed December 18, 1912. Serial No, 737,469.

Patented Sept. 9, 1913.

- To all whom it may concern:

citizen of the United States of America, re-

Be it known that I, WARDER J. BAILEY, a

siding at Cedarville, in the, county of Gilmer and State of West Virginia, have invented new and useful Improvements in Signaling and Telephone Systems for Railroads, of which the following isa specification. i This invention relates to improvements in signaling and telephone systems for use on railroads and has particular applicatiqn to systems of this type whereby trains ap proaching each other will cause the operation of signals to notify; the engineers in charge ofsuch trains of the condition of the track ahead and whereby the engineerof a train may have telephonic communication with the engineer of another train within the same block and with the despatchers oflice or station master.

In carrying out the presentinvntion, it

is my. purpose toprovide a signaling and telephone system for railways in which each train will be equipped with a telephone set which will be automatically connected in circuit witlrthe telephone set at and whereby the telephone sets each station as the tram approaches within a certain distance thereof, and whereby the telephone set on a train at a remote distance from the station may be connected in circuit with the telephone set at a station,

on two upproaching. trains will be. automatically conncctedlin circuit when the trains are in dangerous proximity or in the same'block, the connecting of the telephone sets in cirtem of the character above set forth WhlChcuit affecting the energizing of signals to indicate the approach'of a train to a stat-ion or the approach of one train to an other so that telephonic communication may.

be established.

,It is also my purpose to provide a s splicity, efficiency, durability and reliability coupled with cheapness of cost in installation and which when once installed may maintained at ami'nimum expense.

' Furthermore, I- aim to providea signal .and telephone system by means of which communication may be established between a station and a train approaching within a given or predetermined zone from the station'by'meansof a metallic return circuit, or. between the stationand a. train at a con tions.

siderable distance through a ground return circuit, the engineer of the train establishing'a ground connection with his tele-- phone s'et'by projecting a weighted spear or other metallic object upon or into the ground.

With the above and other objects in view,

the invention consists in the construction, combination and arrangement of parts hereinafter set forth in and falling within the scope of the claims.

In the accompanying drawing the figure is a diagrammatic view of a section of track showing the telephone set at one station and on three trains.

Referring now to thedrawing in detail, the numerals l and 2 designate the rails of a track, While 3' and 3 indicate the sections of a stationary main conductor or third rail extending along the track and suitably insulated or spaced apart from the rails thereof, the contiguous ends of adjacent sections being overlapped, as at t, so that two trains in adjacent blocks will signal each other in time to avoid an accident, when such trains are proceeding'in opposite direc- Each station, as A, is equipped with a telephone set B of any well known or preferred construction, one-terminal of the,

set being connected by a wire 5 to the cond-uctor 3, and the other terminal by way of a wire 6, with the track rail 2. Also at each station is a hell 7 independent of the bell of the telephone set and having one terminal connected by a wire 8 with the rail 2 and the otheriermiual connected through the medium of a wire 5) lo'tho earth as at 10. A suitable form of switch. 11 is arranged in the wire 9 so that the ground connection to the bell 7 maybe opened and the terminal l2 of the telephone set connected to the ground.

', The trains T, 'l", and 'l"-' are each illus- .-trnted diagrammatically by an axle and apair of. wheels bearing on the track rails l and 2. Each train carries a telephone self and a partial circuit thereforincluding a, wire 13 connected to one terminal, as M, of the telephone set and having its free end terminating in'a wheel, brush, shoe or the like 15 mounted on the locomotive in such manner as to ride on the sectional third rail extending along the track, and a wire 16 connected to the other terminal of, the telephone set, as 14, and having the free end present-instance, being-in the formilof a ably driventhe terminal 14. Each train telephone set thereof connected in asuitable manner with the axle 17 sofas to connect the telephone set to the track rail 1. Each telephone set includes a receiver 18,-a forked switch 19,

a transformer 20, the primary Windingof which is connected in circuit with the transmitter 21-and a battery 22, a ringer 23 and. a continuously rotating magneto 24 suitand connected by a wire 25 with is also e uippedwith means for obtaining a. groun connection, such means, the

spear 26 connected by la flexible cord conductor-27 with the terminal 14, so that the "engineer may-toss or throw the spear from the cab into the road bed to ground the said terminal-of 'the telephone set.

-rotated, current will flow indicated by the arrows a, such path consisting of the wire 25, terminal 14, wire l3,

path indicated by 'b, this conductor 3. wire 5, bell of the telephone B,

wire 6, rail 1, axle 17 of train T, wires 16 and 16, receiver hook 19, bell 23, and generator 24. Theengineer of train T and the'station master in charge of station A will thus be notified that telephonic communication may be had between the train and station for the exchange of orders or any other purpose. It will be noted that no use has been made of the grounding 26 of train T, as thisis unnecessary because the circuit includes the section 3 of the third rail and is connected with the station of the telephone sets. When, however, the train is at point remote from the station, as for instance, train T establish communication between his .tele-] phone set and the station set, the grounding evice is projected into. the ground. The main conductor or third rail is nowcut out of the circuit andcurrent'flows through the path consisting of the generator 24, wire 25, flexible conductor27, grounding device 26, earth, wire 9,

call bell 7, Wire 8, track rail 1, axle 17 of the train T wires 16, and 16, receiver fork 19, bell-23 and generator 24. The station master, upon hearing the ringing of the bell 7 manipulates the switch 11 so asto'connect 'hi's telephone set incirouit by throwing the switch to the dotted line position. ThlS talking circuit is practically the same as the ringing circuit except that. the telephone B takes the place'of the call bell 7.

In order to prevent trains which may be simultaneously running on the track in the same direction from signaling each the track ahead, the circuit or path travand the engineer desires to other, a pole changer 28 is connected in the circuit-of each xmagneto 24, between such magneto and the bell 23 and wire 25, and these pole changers are so arranged that the like poles of their sources-of energy are connected to the main conductor or third rail and to the track or return conductor,

respectively, and when thus arranged the electric currents will oppose one another and consequently prevent the energization of the signals. in the engines-,fwhen such engines or trains are proceeding in the same direction. On the contrary, trains running or operatin on the track in opposite directions have thelr signaling apparatus connected to the conductors inreversepolarity, that is, to say, in. series, andwhen thus arranged no two trains proceeding in opposite directions or toward each other can be on the same block" or section without signaling each other.

Letit now be assumed that trains T and T are approaching each other and are within the danger zone. In this conditiog oi the system, the magnet-0s 24, .24 of the two trains will be connected in series with each'.other' with the effect toenergize the bells 23,423 inv each engine cab and so warn the engineers in charge ofthe trains of the condition of ersed by the current consisting-of the generator 24 on the train T, bel1'23, switch 19,

wire'16 and wire 16, axle and wheels 17 ,1 the portion of the track rail 1 between the trains, axle and wheels 17 of train T wires 16 and 16, switch 19, bell 23,-generatorv 24, wire 25, wire 13, section 3 of the Thain conduc-toror third rail and wires 13 and;- 25 of the train T and the other side of the. gem erator on the last-mentioned train. y'lhus, the bells 23, 23 of the trains are energized. From the foregoing description takenin connection with the diagram illustrated in the accompanying drawing, the construction and modeof operation of my inventionwill be readily apparent. Itwill'be seen that I have provided a railway signaling and telephone system wherein each telephone set employed is equipped with a partial circuit, such circuits being. rendered complete or connected to one another by way of a main conductor or third rail" and one of the rails of the track We brought wit a predetermined or prescribed zone, and wherein thepartial circuits may be connected to one another when beyond the prescribed distance and hideperidently of the main conductor-or third rai WhileI have herein shown and described oneparticular embodiment of my invention .by way of illustration, I wish it to be under stood that I do not confine myself to all the precise details of construction herein described and delineated, as modification and hen such telephone sets are variation may be made withinthe scope 9f the claims and without departing from the spirit of the invention. L-

I claim:

1. In a railway signaling system, the com bination with the track rails and a mainboth telephone sets when the train is Within a. predetermined distance of the station, and means for establishing a complete clrcuit between the train carried telephone set and the station signal independently of the station telephone set. 2. In a railway signaling system, the com* bin'ation .with the track rails and a main conductor, of a station telephone set, a partial circuit therefor including said main conductor and one of the track rails, a station signal independent of thetelephone set, a circuit for such signal including meet the track rails and a ground connection, a train carried telephone set, a partial circuit therefor forming with the first-mentioned partial circuit a complete circuit for both telephone sets when the train is within a predetermined distance of the station, means for es-.

tablishing a ground connection for the train carried telephone set to energize said station signal, and means for establishing a completecircuit composed of said partial circuit independently of said main conductor;

and when the train is beyond the prescribed distance from the station.

3. In a railway signaling system, the combinationiwiththe track rails and a main conductor, of a station telephone set, a partial v circuittherefor includinga main conductor and one of the track rails, a station signal independent of the telephone set, a circuit for such signal including one of the track rails and a ground connection, a train carried telephone .set, a partial circuit therefor forming with the first-mentioned partial circuit a complete circuit for both telephone setswhen the train. is within a predeter-- mined distance of the station, means for establishing a ground connection for the train carried-telephone set to energize said station signal, and .means for establishing a complete-circuit composed of said partial cir-.

.cnits independently of said main conductor and for cutting out said'station signal.

in presence of two witnesses. WARDER J. BAILEY.

In testimony whereof I alfix my signature Witnesses: v y EDWIN WAGGONER,

TILLM N WILMorH. a

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

. Washington, D. (1.3 i

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