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 232
omatically unlock theshaft door. The passenger thensteps in the car and closes theshaft door. Unless he close thisdoor he will be unable to startthe car. Wishing to go to thefourth floor he pushes the but-ton in the car corresponding tothat landing, and the carascends, automatically stop-ping and… … In this case the car is controlled entirely ELECTRIC ELEVATORS 2,887 of the car is reduced to approximately 30 per cent, of normal speedand from this slow speed it is very easy to make an accurate landing,the tendency of the car to coast being practically eliminated. Ques. State an additional…
Electrical engineering
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