Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 508
apparatus is especially constructed to discourage any such variation ofrunning speed. The circuit which operates tlie pilot motor on each car is a purely localcircuit, coming from the car shoes and returning to the track, just as themain circuit of the motor does. It is not connected to the train… … of current, it can becomeof acceleration. It does and armature of the pilotmotor, through the contactsof the coast, series, ormultiple relays, and alsothrough the contacts of thethrottle and automatic stop.If either the throttle or theautomatic stop are in anopen circuit position it isimpossible…
Electrical engineering
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