International Library of Technology · Scranton, International Textbook Co. · leaf 404
e the motor as much as possible. The earliermotors were only partly enclosed, but the later types arewholly enclosed. Access is allowed to the commutator andbrushes by means of a hinged or removable lid. G5, Fig. 43 illustrates sections of some of the styles offield that have been used on… … Fig. 43. four-pole field with two field coils, {c) is the GeneralElectric 800 (G. E. 800) motor field. It is similar to theEdison No. 14, but is turned up the other way. {d) showsthe four-pole magnet frame introduced about 1891 by theWestinghouse Company in their No. 3 motor. It has four 60…
Electrical engineering
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