Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 725
he current used in the light itself.The current is brought to the motors by means of contact points, bearingon circular contact pieces attached to the racer. The reflector is a parabolic mirror embedded in asbestos in a cast-ironframe, and is held in place by a number of brass springs. The frame of… … Fig. 1. Schuckert Searchlight as used in U. S. army, moisture. In order to enable the operator to observe the position of thecarbons and the form of the crater while the apparatus is in use smalloptical projectors are arranged at the side and on top of the casing, whichenables images of the arc as…
Electrical engineering
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