American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 347
ght be made.To avoid this defect of 4-apid automatic telegraphy in the Anderson system, alow resistance telephoi^ is placed in the circuit. The effect of the rapid transmissionof the signals is to cause a distinct hum in the telephone which is clearly heard,but upon the occurrence of wire trouble… … ANDERSON PAGE AND LINE CHEMICAL RECORDER. ANDERSON CHEMICAL AUTOMATIC TELEGRAPH. ^95 ped and thus the safeguards against errors are doubled. This device is peculiar tothe Anderson system. Another device which is useful in aiding the prompt detection of wire troubleconsists of an arrangement whereby…
Telegraph
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