Page:Popular Science Monthly Volume 92.djvu/491

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��The two jaw clip spacers, and one hinge clip spacer, are also made from bus bar copper. Cut them to length, file the edges, and bend up one end in a vise. Drill the jaw clip spacers as in detail 4 and the hinge clip spacer as in detail 6.

Get some sheet copper j'i in. thick, and

��draw an outline of the hinge clip upon it as shown in detail 3. Cut around it with a hack saw, finish it with a file, and drill it as indicated.

As shown in detail 7, cut ofT a piece of bus bar copper for the blade, 9}i in. long, and drill a 17/64-in. hole % in. from one

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���TOP CUP 4 10-32 TAP. BOTTOM CUP 4 H0LE5 9 DRILL DPT 5 2 TOP & 2 BOTTOM REQD.

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1 RtCiD DET. 7 1 REQD

Details of the parts that enter into the construction of a grounding, single throw switch in which their combination gives a maximum insulation efficiency at a minimum cost

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