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 346
e retarding mediumemployed for arc lamp dash pots is air. Dash pots may beeither 1. Single acting, or 2. Double acting. ELECTRIC LIGHTING 2,437 Fig. 3,350 shows a single acting dash pot en a series lamp arrangedto act on the up stroke, also an adjusting weight to secure proper balanceof the system.… … AIR VALVt MOVABLECARBON FIXEPCARB0M Fig. 3,350.—Elementary series control lamp showing air dash pot and adjusting weight. Thedash pot, as clearly shown in the illustration, is single acting and so connected that itoperates on the up stroke of the solenoid. A suitable and simple valve prevents…
Electrical engineering
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