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 68
r square inch on a carbon brush above 2 pounds, asthe resistance per square inch beyond this point is practically not reduced,whereas, the friction is increased in direct proportion to the pressure. Fit the carbon brushes carefully to the commutator by passing beneath themNo. 0 sandpaper, the rough… … 71. Correct Position of Brushes in Brush Holder. cut, raise the brush so as to free it from the sandpaper, then lower the brushand repeat the operation until a perfect fit is obtained. If the brush requiresconsiderable sandpapering, No. 2 sandpaper may be used at first, but the finalfitting must be…
Electric machinery · Searchlights · Coast defenses
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
