Electric transmission of energy and its transformation, subdivision, and distribution. A practical handbook (1894)
Kapp, Gisbert, 1852-1922 · New York, Van Nostrand · leaf 309
phase motor embodied in an apparatus in-vented fifteen years ago, but the invention had beenoverlooked, because in those days the possibility of usingalternating currents for power transmission had not evenoccurred to engineers. The next important step in the development of suchmotors was made by… … trical Engineers at the Chicago Exhibition. One ofthese motors, built in 1885, has the form shown in Fig. 100,where B Bl and A Ax are two pairs of electro-magnetsjoined by a yoke G of iron wire. Within the polar cavitythere is placed an armature M, consisting of a coppercylinder. Armatures…
Electric power production
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