International Library of Technology · Scranton, International Textbook Co. · leaf 366
on a notch. On controllersof some makes, this pointer is cast on the handle itself, butthis is not a good plan, because as soon as the fit betweenthe handle and the shaft becomes loose, the pointer indicateswrongly. Beside the ribs or dashes on the top is usuallyfound the word off, to indicate the… … indicate the notches to be used only in starting and in goingfrom series to parallel. On the K2 controller there are fourof these long ribs; two of them are for the series combina-tion and two for the multiple. The two long ribs in series 38 ELECTRIC RAILWAYS. §24 d B B B d
Electrical engineering
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