Poole, Cecil Percy, 1863- · New York : McGraw · leaf 34
FIG. 21 ONE-FOURTH HORSE-POWER MOTOR WITH RING ARMATURE 25 The armature core, spider, and shaft are shown, partly in cross-section,by Figs. 23 and 24. The core is built up of low-carbon annealed steeldiscs 5 ins. outside diameter and 2§ ins. inside, not more than 25 milsthick; these are assembled… … FIG. 23
Electric generators -- Design and construction · Electric motors -- Design and construction
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