Identifier: cyclopediaofappl05amer (find matches)
Title: Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc.
Year: 1916 (1910s)
Authors: American Technical Society
Subjects: Electric engineering
Publisher: Chicago : American Technical Society
Contributing Library: Northeastern University, Snell Library
Digitizing Sponsor: Northeastern University, Snell Library

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Fig. S. Details of Trolley CableWinding Drum 388 TRACKLESS TROLLEY TRACTION 9 the plugs to be pulled out and the carriages exchanged, with but aloss of about ten to twenty seconds of time. It is sometimes noteven necessary for the cars to stop, the cables being exchangedwhile the cars are running by virtue of their own momentum. Motors. The motors of these cars are unique and very inter-esting, being entirely embedded in the wheels or, more properly, theythemselves make up the wheels, for the field magnets of each motorare the hubs of the wheel and the armature rotates around them, Fig. 9.The motors are of the direct-current series-wound type, of about 20
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Fig. 9. Four-Motored Vienna Trackless Trolley with Trailer horsepower capacity, and the current is supplied to them througha hollow axle. Each motor is entirely enclosed, so that it is water-and dirt-proof. By this motor construction an economy of bothspace and power is effected and the cars run with high efficiency. Thecontrollers are provided with 6 speeds, 3 with series-connected motorsand 3 with parallel-connected, with 3 points additional for braking.Cars. The cars are very light and are built of pressed steel.On account of the fact that the motors are in the wheels, the springs 389 10 TRACKLESS TROLLEY TRACTION

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