Improvements in the Working and Controlling of Electrically Driven Cars.

Abstract

5766. Siemens Bros. & Co., Siemens, A., and Duke, A. M. March 19. Electric locomotives and motor vehicles. -The object is to provide for controlling all the motors of an electric train composed of two or more motor cars, with or without trailers, from one point, while the individual motor cars are each capable of being worked separately from either end in the usual way. This is accomplished by the use of simple mechanical connections between the ends of the adjacent cars, and electrical connections from end to end of each car. Reference is made to the mechanical system of control described in Specification No. 6007, A.D. 1895, to the pneumatic system described in Specification No. 5001, A.D. 1898, and to the electrical system described in Specifications Nos. 11,158, 11,158A, 11,158B, A.D. 1898, [Abridgment Class Electricity, Regulating &c.]. Fig. 2. shows a diagrammatic plan of an installation on three cars, Fig. 3 shows a plan of the relays and mechanical couplings between two cars, and Figs. 4 and 5 end elevations of the relays for the driver's control and the reverser respectively. The relays are a modification of those described in Specification No. 4242, A.D. 1890, [Abridgment Class Electricity, Regulating &c.], the contacts being arranged as therein described, so that each of the relays in the pairs b<1>, b<3> and a', a<3> at opposite ends of the car are always relatively in the same position. The relays on adjacent cars are connected by flexible and telescopic shafts k, k. The driver has control of two switches a, b, which may be interlocked as described in Specification No. 12,088, A.D. 1897, [Abridgment Class Electricity, Regulating &c.], or otherwise, the former closing the circuit of the reversing relay a' in either of two positions, and the latter closing the circuit of the controlling relay b<1> in either of three positions. The switch c being closed and the switch c<1> open, the driver turns the switch a into the position for forward or backward running, all the reversing relays a<1>, a<3> being then simultaneously operated, and the switch b can then be operated to control the motor relays b<1>, b<3> throughout the train. The controller motors m are thereby put into action and the controllers d appropriately adjusted for putting the car motors m<1>, m<2> in series or in parallel. These motors may be constructed as described in Specifications No. 12,088, A.D. 1897, or No. 2956, A.D. 1899, [Abridgment Class Electricity, Regulating &c.]. Idle shafts p, q may be provided, so that end for end reversal of the cars can be compensated for by cross-connection of the shafts k.

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