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 187
htning flashes are not usually constructed for heavy loads,the one shown in fig. 1,025 being designed for two amperes. SIGN FLASHERS 875 Script Breakers.—Flashers of this type are used forbreaking large script signs, one socket at a time; that is, eachlamp is lighted one after another until all are… … Fig. 1.026.—Betts script breaker (brush tj-pe). This flasher is especially designed for spellingout signs one letter at a time, or work of a similar nature, The brushes for the revolvingcam contacts are of copper, several leaves thick and provided w-ith special brush holderto prevent loose contact…
Electrical engineering
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