The telephone system of the British post office. A practical handbook (1901)
Herbert, Thomas Ernest · London, New York, Whittaker and Co. · leaf 64
ected to one side of the magneto bell and theswitch-arm. It will be seen that a current from the distant station passesfrom the spring to the spindle, thence on to the magneto bell without Connections. 49 traversing the resistance of the armature. On rotating the armature theshort-circuit is… … >=S^ 1 ^ ♦ i-<vvvvyy ■^1 Figure 39. plete. It corresponds somewhat to the galvanometer which is used in thecase of telegraph circuits. If the wire is disconnected the bell at neitherstation rings. E 50 Bell-Blake Telephone Station.
Telephone · Postal service
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