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 53
1. Fig. 41 is a 2-pole, 4-coil, ring, wind -ing around core of annealed soft ironwires or washers. Two circuits be-tween brushes. Nearly all cores, ringor drum, are now made from soft-ironsheet in washer shape. Fig. 43 is a 2-pole, 4-ccil, drum, lapwinding over annealed sott-iron wash-ers starting…
Electric machinery · Searchlights · Coast defenses
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
