Practical electricity, with questions and answers (1901)
Cleveland armature works, [from old catalog] comp, Lincoln, John C. [from old catalog] · [Cleveland, Ohio, Cleveland armature works] · leaf 105
Diagram of magnetic circuit of G. E. 14-pole alternator dynamo.Leakage coefficient 1.25. … Diagram of magnetic circuit of Siemans & Halske dynamo,4-pole field inside armature. Leakage coefficient 1 08.
Electricity · Electric generators
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.