The electric motor and the transmission of power (1906)
Houston, Edwin J. (Edwin James), 1847-1914, Kennelly, Arthur E. (Arthur Edwin), 1861-1939, joint author · New York : McGraw Pub. Co. · leaf 178
^ bedivided into three classes; namely, (1) Drum armatures. (2) Ring armatures. (3) Disc armatures. 170 THE ELECTRIC MOTOR AND Figs. 22, 29, 30, 31, and 32 representdrum armatures; that is to say, armatureswhich are simply drum-shaped or cylin-drical in their appearance. … Fig. 34.—Motor with Gramme King Armature, Fig. 33, represents a motor furnishedwith a ring armature A A A. Here thefield magnets are placed inside the arma-ture, as is sometimes the case, thoughmore frequently the armature is placedinside the field, as is shown in Fig. 34, THE TRANSMISSION^ OF…
Electric motors
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