A dictionary of electrical words, terms and phrases (1898)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W. J. Johnston company · leaf 405
lectric motor or by clockwork. In order to reproduce the speech or othersounds the phonogram record is placed on thesurface of a cylinder similar to that on which itwas received (or is kept on the same surface),and the tracing point, placed at the beginning ofthe record and being maintained against… … Fig. 423. Edisons Improved Phonograph. the diaphragm, to which it is attached, is given to-and-fro motions that exactly correspond to theto-and-fro motions it had when impressed origin-ally by the sounds it recorded on the phono-gram record. A person listening at this dia.~ Pho.] 396 [Pho. phragm…
Electricity · Electrical engineering
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![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten10unit-541-367.webp)
