Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 204
722. ELECTRIC FUSIBLE CUT-OUT.—Thefuse wires or strips are connected to the circuit oninsulated porcelain blocks. They are made of resist-ing metal or alloy of tin and lead of sufficient capacityfor the required current without excessive heat.Overcurrent melts the wire or strips and opens… … 723. RHEOSTAT OR P.ESISTANCE COILS, with variable switch. Coils are made of iron, platinum,or German silver wire. The switch connections are somade that the coils may be made to connect the linewith one or any number in series.
Mechanical movements
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