American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 85
tly been recognized by the officials of the principal telegraphc (impanies of this country, and the wishes of the operators in respect to the form of keydesired, have generally been consulted, even to the extent of displacing keys alreadyextensively in service. The wisdom of such action is evident… … OLD STYLE MORSE KEY AND CONNECTIONS, The tendency of the Morse telegraph key in this country has been from that of aheavy, cumbersome mass of brass, as outlined in Fig. 37, which represents a style ofkey in vogue twenty-five years ago, to those shown in Figures :^S, 39, 40; weighingabout 7 J…
Telegraph
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