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 54
48. Drum Wave Winding—4=Pole. 47. Drum Wave Roiled Out. 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 sjiider (fig. 52). Air ventilatingducts run radially and longitudinally throiigh…
Electric machinery · Searchlights · Coast defenses
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from A Dictionary of science, literature, and art [electronic resource]: comprising the history, description, and scientific principles of every branch of human knowledge; with the derivation and definition of all the terms in general use (1844)](https://img.insideoutlibrary.com/img/200/ia-62523189.5956.emory.edu-867-260.webp)
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer02inte-439-258.webp)