Handbook for the use of electricians in the operation and care of electrical machinery and apparatus of the U. S. seacoast defenses .. (1904)
United States. War Dept · Washington, Govt. print. off. · leaf 161
never turn adetonator toward a person. A detonator must on no account be bent, struck, heatedor rouglily handled. Avoid strain on a fuse by hitching a tension string fromthe charge case to the fuse wires. For certainty of ignition of a single important charge,two fuses are connected in parallel.… … 148, 30Fuse FiringDynamo. (C) EliECTRIC BELIES. ,^., ,-?-- 1. Electric bells are of two kinds—single stroke (fig. 149) and vibrating. In the vibrating bell (fig. !.)()), the armature is held by a spring, (, against 7?, adjustable at D. The key A being closed, a current fiows. through L, P, B, F, C,…
Electric machinery · Searchlights · Coast defenses
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
