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
141. Receptacle—Plug. (C) REPAIRS. The soft-rubber packings used about the couplings and cables should be fre-quently examined and renewed from time to time, as the rubber becomes hardand partially vulcanized by the long continued compression and heat from themetal, which becomes quite hot when in…
Electric machinery · Searchlights · Coast defenses
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
