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 55
48. Drum Wave Winding—4=Pole. … Drum Wave Rolled Out. 3. The features of recent slow speed armatures are— (a) The core is composed of japanned washer-shaped discs stamped out of sheet iron and solidlyassembled on a spider (fig. 52). Air ventilatingducts run radially and longitudinally through thecore, and deep slots in which the…
Electric machinery · Searchlights · Coast defenses
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
