"On This Day (November 8) in the History of Recorded Sound..."
Posted: Sat Nov 08, 2025 7:04 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.”
https://www.antiquephono.org/#/
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.”
https://www.antiquephono.org/#/