American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 525
ij^^ BUCKINGHAM PRINTER. 436m Tlie armature-spring of the governing-relay G K is so adjusted that its armaturewill not respond to short pulses of current, but will respond to prolonged pulses ofeither polarity. This feature is utilized in connection with the circuit-closers of thesunflower, and…
Telegraph
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