Handbook for the use of electricians in the operation and care of electrical machinery and apparatus of the U.S. seacoast defenses (1902)
United States. War Dept, Anderson, George Lucius, 1849-1934 · Washington, Govt. Print. Off. · leaf 158
ox; never turn adetonator toward a person. A detonator must on no account be bent, struck, heatedor roughly 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. 30=Fuse FiringDynamo, (C) EliECTRIC BELLS. ,/rT:., .^- 1. Electric bells are of two kinds—single stroke (fig. 149) and vibrating.In the %Tibrating bell (fig. 150), the armature is held by a spring, C, against i?,adjustable at D. The key K being closed, a current flows through L, P, B, F, C,E,…
Electric machinery · Searchlights · Coast defenses
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