Spon, Ernest, Haldane, Robert, Lock, Charles G. Warnford (Charles George Warnford), 1853-1909 · London ; New York : E. & F.N. Spon · leaf 119
Electrics — Bells. 101 Fig. 52. (11) Another i)l;in. — Make connec- tions like Fig. 5-i at both ends : a, To rSfSxr-rv switch ; h, telephone ; c, bell ; (/, bat- earth (water or gas-pipe will 1'r;. 53. do); _/', line-wire. The switch is made … You can now go on with your speaking, moved, (/ springs np, making contact at and as soon as finished move switch to 6 a, so bringing the telephone into con- stud 2 at both ends. nection with the line wire /. As shown in the sketch, the bell is ready to re- (12) Another plan. — The push in Fig. 55…
Workshop recipes · Technology · Industrial arts
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
