International Library of Technology · Scranton, International Textbook Co. · leaf 296
u ^Mt^M^LL^J[\~\ \ of drawn copper, is made in halves A, B, which are con-nected by two springs c, one on each side of the blade.When the handle is pulled out, the half A leaves the clip E … Fig. 5. and thus stretches the springs. When the bottom bladeflies out, it leaves clip E very quickly, owing to the actionof the springs, thus drawing out the arc and breaking italmost instantaneously. The main switch on the board 17 ELECTRIC LIGHTING. shown in Fig. GO is very similar in principle.…
Electrical engineering
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