ASSEMBLING THE ARMATURE CORE 93 



removable flange is drawn up 'to the spider by short bolts. The 

 use of circumferential keys, as shown in Figs. 69, 72, and 74 of 

 Chap. TIL, may, in the case of small stationary armatures, be 



FIG. 101. Complete Assembled Armature of large Generator. 

 Allmanna Svenska Elektriska Aktiebolaget. 



preferable to bolts. A construction which has been considerably 

 employed for tramway motors is shown in Fig. 60, Chap. III., and 

 consists in screwing the end flange on a threaded portion of the 

 spider. In other cases it is screwed upon a threaded portion of 

 the shaft, as shown in Figs. 61 and 64, Chap. III. 



