International Library of Technology · Scranton, International Textbook Co. · leaf 359
nd the mechanismof the controller is so fixed that thehandle cannot be easily made to restanywhere except on a marked notch.This is done so that the drum will nothang between notches and cause burn-ing inside the controller. Fig. 21 showsthe K2 controller with the door closed,as it appears on the… … Fig. 21. 34 ELECTRIC RAILWAYS. 31 the reverse drum ^; 9, 9 are the fingers or wipers that makecontact with the power drum; 6 is the bloAv-out magnet.The reverse drum and its fingers have no blow-out coil.
Electrical engineering
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