International Library of Technology · Scranton, International Textbook Co. · leaf 250
eby giving greater area of contact between the bondand the rail. The fish-plate is then screwed back into place.This bond belongs to what is known as the xnotected class,as the fish-plate not only protects it from mechanical injury 22 ELECTRIC RAILWAYS. 31 and the action of the weather, but also… … Fig. 31. shown in the figure, the plug part of the terminal that goesinto the rail is hollow. To fix the bond to the rail, the plugis slipped into the hole and a small steel ball is then driven
Electrical engineering
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