"On This Day..."
Posted: Fri Nov 08, 2024 6:13 am
“On This Day in the History of Recorded Sound…”
November 8, 1887: Emile Berliner was granted a U.S. patent for a “Gramophone.” This patent (No.372,786) specified a laterally-cut groove of even depth, and became one of the fundamental patents for the disc record industry.
November 8, 1898: Leon Douglass was granted a U.S. patent (No.613,670) for what was marketed as the “Polyphone Attachment.” By arranging two reproducers (and two horns) to track a cylinder record groove about an inch apart, it was claimed the selection would be “Twice as Loud, Twice as Clear, Twice as Sweet.” For much more: https://forum.antiquephono.org/topic/37 ... mment-2146
#antiquephonographsociety #phonograph #gramophone #antique
November 8, 1887: Emile Berliner was granted a U.S. patent for a “Gramophone.” This patent (No.372,786) specified a laterally-cut groove of even depth, and became one of the fundamental patents for the disc record industry.
November 8, 1898: Leon Douglass was granted a U.S. patent (No.613,670) for what was marketed as the “Polyphone Attachment.” By arranging two reproducers (and two horns) to track a cylinder record groove about an inch apart, it was claimed the selection would be “Twice as Loud, Twice as Clear, Twice as Sweet.” For much more: https://forum.antiquephono.org/topic/37 ... mment-2146
#antiquephonographsociety #phonograph #gramophone #antique