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 155
In9uIat,ion BfocK.Plunjer Contact. i—•■Pulsator Switch. Operating Switch, Contact SpringConductor Rin^. SIGNAL BOX 140. Diagram of Connections of Night-Signal Set. extingiiishes the lamps in the upper lantern when pushed to one side and lightsthem again when released. The lamp socket on the… … 141. Receptacle—Plug. (C) REPAIRS. The sof-t-rubber packings used about the couplings and cables should be fre-quently examined and renewed from time to time, as the rubber becomes hardand ])artially vulcanized ])y the long continued compression and heat from themetal, which ])ecomes cpaite hot…
Electric machinery · Searchlights · Coast defenses
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
