Dynamo electric machinery; its design, construction, and operation; direct-current machines (1915)
Sheldon, Samuel, 1862-1920, Hausmann, Erich, 1886- joint author · New York, D. Van Nostrand Company; · leaf 82
ts. In Fig. 35 is shown in part thespider of a 300-K.W. generator with a segment dovetailed ^o DYNAMO ELECTRIC MACHINERY. to one of the arms. The joints are staggered in the lami-nations of successive layers. Fig. 36 illustrates a sectionof the spider of the same machine with the end flanges… … Fig. 36. To obtain sufficient ventilation in the armature andthereby lessen the temperature rise incident to operation,it is usual to provide radial ventilating ducts in the core.The rotation of the armature causes air to pass in throughthe axial apertures, or spider openings, and out throughthe…
Electric machinery
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