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Scientific American, Vol. 99, No. 7 (August 1908) (1908)

leaf 9

An illustration from Scientific American, Vol. 99, No. 7 (August 1908), 1908, leaf 9
ile they coast down the other In the usual telephone transmitter the diaphragm faces adapted to engage one or the other of a pair of to the second longitudinal runway. The motion ex- bears against a small quantity of granulated carbon, rollers mounted on the operating lever. When the actly… … resistance units frequently burn out. In contrast with rotated by a motor at a rapid rate of speed. The cars Front of the Controller, Showing the Compressing these conditions the no-segment controller admits the are of elliptical or oval conformation. There is a Lever. current steadily instead of…

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