Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 57
n pole-piece, P, at one end, and a similarly shaped iron block, Q, at the 34 THE TELEPHONE RECEIVER, 35 other end. These parts are firmly bound together by the twoscrews, i S. On the end of the pole-piece is slipped a coil of wire,G. This coil is usually wound with two parallel No. 38 B. &… … FIG, 22.—BELL SINGLE-POLE RECEIVER. the diaphragm, D, of thin sheet iron. The piece, B, is hollowedout as shown, to form a convenient earpiece. A hard rubber tail-piece, T, carrying two binding posts, / /, fits over the end of thecase opposite the earpiece, B, and is held in place by a screw,…
Telephone
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