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- · New York, T. Audel · leaf 257
andfast push buttons as shown in fig. 752. A pressure upon the fast or slow buttons willcause the press speed to be correspondingly accelerated or retarded, and this action willcontinue so long as the button is pressed. The press continues to run at the speedattained at the instant of releasing the… … Fig. 754.—Wiring diagram of the standard fonn of Monitor controller. A set of solenoids areconnected in series and so interoperating as to cut resistance out of the armature circuit ofthe motor as the apparatus it is dri\-ing comes up to speed. The controller is designed tobe used on all classes of…
Electrical engineering
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