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 54
1. Fig. 41 is a 2-pole, 4-coil, ring, vsdnd-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. 42 is a 2-pole, 4-coil, drum, lapwinding over annealed soft-iron wash-ers starting…
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-136-76.webp)
