Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 559
een the motors which brings them to a standstill.It may damage the-apparatus, however, and should only be used inrare emergencies; this method is only available when there are twomotors on the car. When approaching curves or turnouts the power should beturned off, applying such power upon reaching… … Fig. 3,744.—Three spectacle automatic double route home and distant semaphore signal.The post B consists of two lengths of channel iron strengthened by a lattice structure,the base being bolted to, or incorporated with a foundation of concrete, A. The top con-sists of a platform G, railing E,…
Electrical engineering
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