. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . nographicrecord may be employed instead of the dia-phragm to operate the valve b, and thus allowthe record to be made of the articulations, af-ter which such articulations are reproduced inthe same or in increased volume as the origi-nal utterances. I claim as my invention— 1. The combination, with a diaphragm, orthe record produced therefrom, of a valve anda supply of air, gas, steam, or other fluid un-der pressure, for reproducing sounds, substan-tially as set forth. 2. The method herein specified of producingsoun
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . nographicrecord may be employed instead of the dia-phragm to operate the valve b, and thus allowthe record to be made of the articulations, af-ter which such articulations are reproduced inthe same or in increased volume as the origi-nal utterances. I claim as my invention— 1. The combination, with a diaphragm, orthe record produced therefrom, of a valve anda supply of air, gas, steam, or other fluid un-der pressure, for reproducing sounds, substan-tially as set forth. 2. The method herein specified of producingsound, by causing primary sounds or articula-tions to act upon a diaphragm, and then con-trolling the exit of a fluid under pressure inharmony with the primary sounds, to producesecondary sounds corresponding with the pri-mary sounds, but of different volume, substan-tially as set forth. Signed by me this 28th day of February, 1878. THOS. A. EDISON. Witnesses: Geo. T. Pinckney,Chas. H. Smith. T. A. No. 203,013. Patented April 30, 1878. cdig.
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