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 152
rm with the pointer can be swung over the dial to the combinationrequired, and the knob depressed. The cam actuated by the knob will then NIGHT-SIGNAL SETS AND TRUCK-LIGHT CONTROLLERS. 105 engage with a slot so that the arm can not be moved, and will remain in thisposition until the knob has been… … Insulat-ion BlocK.Plunder Contact.. ±—Pulsator Switch, Operating Switeht Contact Spring-Conductor Ring. SIGNAL BOX 140. Diagram of Connections of Night^Sig^nal Set. extinguishes the lamps in the upper lantern when pushed to one side and lightsthem again when released. The lamp socket on the…
Electric machinery · Searchlights · Coast defenses
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