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 367
Fig. 4,329.—Automatic control for electric house pump, consisting of float switch, starter, amdconnection, as shown. the motor will start and stop. The figure shows the starting rheostat,fuse block, main switch, and wiring. In place of a tank float, control may be effected by means ofthe varying… … The method, which operateson the same principle as thewell known diaphragm damperregulator placed on steamheating boilers, is illustratedin fig. 4,333. The cut shows aswitch operated by a pressurediaphragm. Water is piped to the dia-phragm chamber through aquarter inch pipe from tankor discharge of…
Electrical engineering
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