Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 555
mouth-piece, and of requiring that the operatorscut-in plug and jack carry four contacts instead of two, two for thetransmitter and two for the receiver. It is also found rather difficultto prevent these transmitters from becoming foul, due to the con-stant breathing of the operators into the… … FIG. 384.—OPERATOR.S TRANSMITTER MOUNTING FOR MULTIPLE BOARDS. of the switch-board section. As will be seen, the horizontal armfrom which the transmitter is suspended is, by means of a thumb-screw, carried on the top of a vertical post, adjustable in or out, thatis, toward or from the face of the…
Telephone
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
