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 182
17J. Parallel Telephone bvaiion. 172. Series Telephone Station. The three main coils have few turns of wire andlow resistance, and operate in series. Majjncto circuit, normally short-circuited, hasthe sliunt opened autdniaticiilly at A by the crankshaft slidini; to the riijlit }^ inch when rotated,…
Electric machinery · Searchlights · Coast defenses
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-346-217.webp)
