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American telephone practice (1905)

Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 221

An illustration from American telephone practice, 1905, leaf 221
It / FIG. 1S2.-WESTERX IMPRO\ED DROP AND JACK. of the line. The jack-tube, .-J, and the shield for guiding the pluginto the socket are formed from a single casting of brass firmlysecured to the jack base, .1/, thus providing a much more rigid con-struction than that shown in Figs. 180 and 181. The… … FIC. IS.3.—SIDE ELEVATION AMERICAN DROP AND JACK. tion, the path through which it swings being indicated by thecurved dotted line. Repairs on these drops may be readily made,as the entire structure of any drop and jack may be withdrawn fromthe front face of the board by removing the thumb-nuts, i…

Telephone

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