Iles, George, 1852-1942 · New York : Henry Holt and company · leaf 213
effective relayis but four ounces in weight. Vail, who had the ear andtouch of an accomplished musician, soon found that he couldsend well-timed free-hand signals, discarding the port-rule,or type-carrier, of Morse, with its incidental botheration.In a few weeks he constructed a circuit-closer in… … Vau.s Ouiginal Fin(;ei< Key (iF 1844[In the cabinet of the Western Union Telegraph Co., New York.] A further simplification of equal worth entered next, andquite unbidden. Operators of quick ear soon interpretedsignals solely by the sound of the armature-lever. Morsealways regarded the permanent…
Inventors
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