Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 23
terminal and the other connecting a line circuitto the negative ( —) battery terminal. Por example if the letter Ris to be signaled, one would press a + key on line o and a — key on 13 4 MODERN LAND AND SUBMARINE TELEGRAPHY line 3; this would cause the needle in coil 5 to swing to the left andthe… … Fig. 1. DiaKram of General Plan of Cooke-Wheatstone Telegraph, Operated Over a Thirteen Mile Line in 1S3S the intersection of these rows, which is R. Similarly if keys 2-{- and4— were pressed, the needles would indicate letter F, or if 6-\- and-/ —, the figure 2 would be indicated. This system was…
Electrical engineering
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