US560903A - Electric railway - Google Patents

Description

W. HJJORDAN. ELECTRIC RAILWAY.

(No Model.)

No. 560,903. ,Patnted'may 26, 18196.

@mum/woz OAM/ MMA/4A @wm 5min;

UNiTED STA-Tas.A

PATENT. OFFICE.

VVILLAM H. JORDAN, OF BROOKLYN, NEW YORK.

ELECTRIC RAILWAY.

SPECIFICATIONforming -part of Letters Patent No. 560,903, Vdated May 26, 1896.

` Application filed January 17, 1896. Serial No. 575,825. (No model.)

My invention is illustrated -in the accompanying drawings, in whichbe overhead or underground; C, the feedwire, and c the connections between the feedp wire andthe working conductor B.

D represents the generating-station, ,with which the track and the feed-wire are connected.

The workin g conductor B is divided into insulated sections, one such section being shown in the drawings at b and insulated by insulators h. These insulated sections constitute the block or section at which it is desired to operate a signal., The signaling devices E, which may be either lamps or audible signals, or both, are connected in a branch wire e between the insulated section b of the working conductor and the feed-wire O. The insulated section b is also connected with the feed-wire by` a connection c. This latter connection is of higher resistance than the connection c in order to insure the operation of the signaling devices. The object of the additional connection c with the feed-wire is to provide for the interruption of the circuit e through any damage to the signaling devices. If the connection c were omitted, the current for the motor would pass entirely through the sigexpensive mechanism for guarding against `this objection.

`In Fig. 2 a single signaling device is employed for the two tracks, and in order to operate the same from both sides an additional connection x is employed. If, however, it is desired to have a separate signaling device for each track, the connection x may be omitted and a separate connection e, (shown in.

dotted lines,) containing signaling devices, may be substituted.

The operation is as follows: Referring to Fig. 1, when the car F enters the section b from the right it will receive current through the connections e and c', and the signaling devices at the left-hand end of the section willbe operated. As the car leaves the section b it will receive current from the working conductor B through the connection c from the feed-wire, as usual, and the operation of the signaling devices will cease. The same operation takes place in the doubletrack road illustrated in Fig; 2. In that illusb, or if both sections were entered simultane-' ously, the signaling'devices would be operatedsimilarly to those illustrated in Fig. 1. If desired, in practice, the connection c' between the insulated sections b and the working conductor B may be made of such a resistanee that practically no current would flow through thesame except when the connection c is interrupted. The conductor c of high resistance possesses afurther advantage in that should the signaling-circuit be interrupted and prevent the operation of the signals when a car enters the section the current for the motor would have to pass through the conductor c', and since this conductor is of high resistance the electromotive force of the current received by the car-motor would be correspondingly decreased, and hence the speed of the carmotor would also be decreased, so that whilethe signaling devices would be inoperative the liability of accidents due to their inoperativeness would be avoided by the reduced speed of the car.

What I claim isl. In an electric railway, the combinationwith a working conductor having insulated sections, of a feed-wire extending along the ICO line and connected at intervals with the working conductor, a connection between the insulated sections and the feed-wire containing signaling devices and through which passes the current for the rnotor, and an additional connection between the feed wire and insulated sections of the Working conductor through which passes the current for the motor when the signaling devices fail to operate, which connection is such that when the signalin g devices fail to operate, the motor will be caused to operate at a reduced speed.

2. In an electric railway, the combination with a working conductor having insulated sections, of a feed-wire extending along the

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