. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . N. PETERS, PHOTO-UTHOGfiAPHER. WASH1NQT0N, 0 0. United States patent Office. THOMAS A. EDISON, OF MENLO PARK, NEW IN VOCAL ENGINES. Specification forming part of Letters Patent No. 210,767, dated December 10, 1878; application filed November 27, 1878. To all wlwm it may concern: Be it known that I, Thomas A. Edison, ofMenlo Park, Middlesex county, State of NewJersey, have invented certain new and usefulImprovements in Vocal Engines; and do herebydeclare the following to be a full, clear, and~ex-ac
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . N. PETERS, PHOTO-UTHOGfiAPHER. WASH1NQT0N, 0 0. United States patent Office. THOMAS A. EDISON, OF MENLO PARK, NEW IN VOCAL ENGINES. Specification forming part of Letters Patent No. 210,767, dated December 10, 1878; application filed November 27, 1878. To all wlwm it may concern: Be it known that I, Thomas A. Edison, ofMenlo Park, Middlesex county, State of NewJersey, have invented certain new and usefulImprovements in Vocal Engines; and do herebydeclare the following to be a full, clear, and~ex-act description of the invention, such as willenable others skilled in the art to which itpertains to make and use it, reference beinghad to the accompanying drawings, whichform part of this specification. The object of my invention is to transformthe vibrations of a diaphragm or other bodycapable of being set in vibration by sound-waves into continuous rotation of a shaft, toact as a prime motor for various light mech-anisms. My invention consists in the combination,with a d
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