[Waterworks-devel] target sign

[Scharmann M. <biz...@ed...>]

 by the generator crank shaft, and this path is automatically broken
when the generator is operated, at which time, also, the generator path
is automatically closed. This arrangement brings about the result that
the generator never can ring its own bell, because its switch always
operates to cut out the bell at its own station just before the
generator itself is cut into the circuit. In Fig. 149 is shown the
complete circuit of a bridging telephone. The circuit given in this
figure is for a local-battery wall set similar in type to that shown in
Figs. 142 and 143. A simplified diagrammatic arrangement is shown in the
lower left-hand corner of this figure, and from a consideratio