Spon, Ernest, Haldane, Robert, Lock, Charles G. Warnford (Charles George Warnford), 1853-1909 · London ; New York : E. & F.N. Spon · leaf 217
well as in the case and the ends of secondary coil joined to of a system worked with a central zinc proper. The point of the screw office, and any suitable arrangement of may be nearer the end of the reed than the mechanical parts may thus be is shown employed at the receiving station. It ('<) Fig.… … shifting ; 1, 2, and 3 are the studs, con- nected as shown. It will be observed that one of the wires from telephone bell and battery is connected to the earth-plate e, or return wire. In the position shown, the telephone is in use ; if the spring is moved to No. 3, the bell at the other end of the…
Workshop recipes · Technology · Industrial arts
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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