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 122
or overload. 10. The motor may be slowed down or even stopped by moving W to the left,provided R h is large enough to carry the current. 11. The electro-magnetic brake on the gear wheel next the motor armatureautomatically clamps it whenever the main current ceases and the motor stops.It gives a… … IX.—SEARCH=LIQHT PROJECTORS. THE 60-INCH DIAMETER SCHUKERT SEARCH LIGHTAT FORT MONROE (Fig-. 120). With 150 ampei-es, at about 60 volts, it has 194,000,000-candlepower. On aclear, dark night a person within its beam, 12 miles distant, can read ordinary-print ; it lights np an object 2i miles…
Electric machinery · Searchlights · Coast defenses
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