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 129
cuiting the anna-tures of the motors and holding the projector locked in position. An electricallycontrolled ])rojector c-an also be operated as a hand control projector, by open-ing the circuit switch on top of the controller and releasing the clutclies con-nected to the motors in the base of the… … 122. Pilot=House Control. 92 HANDBOOK FOR ELECTRICIANS. Witli electrical control, the highest speed obtainable in the horizontal planeis a movement of 360° in thirty seconds, and in a vertical plane lOOMn sixtyseconds. The motors may be operated at four slower speeds and also by steps,the angle of…
Electric machinery · Searchlights · Coast defenses
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
