Cyclopedia of applied electricity : a practical guide for electricians, mechanics, engineers, students, telegraph and telephone operators, and all others interested in electricity (1905)
American School (Chicago, Ill.) · Chicago : American School of Correspondence · leaf 415
enlisted artillerymen;that messages must be visible at night; and the operation must be 1. Transactions, A. I. E. E., Vol. XIX., pp. T23 and 724. 878 THE TELAUTOGRAPH 11 independent of rain, salt mists, cold, heat, or tropical insects, andit is apparent that no easy problem is presented. A sj)ecial… … Fig. 3. relay is eliminated and the receiver pen-lifters are operated over athird line wire by the transmitter platen switch directly. Each gun receiver is enclosed in a water-tight brass case, sus-pended by springs from the gun carriage directly in frcnit of thegunner. The parts are as far as…
Electrical engineering
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