Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 37
sponding increase of resistance will result. Berliners transmitter is shown in principle in Fig. 14, which is areproduction of the principal figure in his now famous patent. Inthis A is the vibratory diaphragm of metal, against the center ofwhich rests the metal ball, C, carried on a thumb-screw,… … FIG. 14.—BERLINERS TRANSMITTER. including a battery and receiving instrument. Figs. 15 and 16show two different views of an exact duplicate of Berliners originalmodel as filed in the patent office. This was very roughly con-structed as shown. The diaphragm was a circular piece of ordi-nary tin and…
Telephone
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