Telegraph engineering : a manual for practicing telegraph engineers and engineering students (1922)
Hausmann, Erich, 1886- · New York : D. Van Nostrand Company · leaf 128
smission speeds the signalsmay be read from a sounder connected to the local-circuitcontacts of the receiving relay. AUTOMATIC AND PRINTING TELEGRAPHY 113 Fig. 4 shows an automatic transmitter made by Muir-head & Co., Ltd., for cable signalling. It is provided witha local pole-changer, speed… … Fig. 4.mitter are somewhat different from those shown in Fig. 3,but have the same function. The connections of the Wheatstone automatic system forduplex operation are indicated in Fig. 5, which shows onlythe electrical features at one station. The connections arethose of the polar duplex, already…
Telegraph
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
