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Scientific American, Vol. 85, No. 22 (November 1901) (1901)

leaf 10

An illustration from Scientific American, Vol. 85, No. 22 (November 1901), 1901, leaf 10
all horns communicating at adapted to circuits of a given voltage, is the subject tirely faultless. What is known as the "hairpin" their smaller ends with a transmitter having a mouth. of the patent granted to Mr. Hanks. The adaptability filament, the first form ever used, varied but slightly A… … A device by which this change is at all times readily MENT COMPARED WITH ONE OF THE "HAIRPIN" accomplished is shown in the accompanying cut. The CHAIN-PULL ELECTRIC LIGHT. TYPE. lamp is provided with about ten feet of flexible cord, vocal or instrumental, is reproduced by this new and mounted on a…

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