Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 474
451 452 AMERICAN TELEPHONE PRACTICE. scribers station, besides the usual talking apparatus, the bell mag-net, with its tuned reed and bell tapper, is bridged across the linein series with a condenser, C. Currents of= 2000, 4000, 6000 and8000 alternations per minute are used, these currents being… … FIG. 332.-KELLOGG PARTYXINi: BELL. plied by different generators properly governed to maintain a con-stant speed. The bell mechanism is shown complete in Fig. 332, two viewsbeing given. The whole mechanism is mounted on a horizontaliron plate, d, the bell being mounted in a horizontal position…
Telephone
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