"On This Day..."

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phonogfp
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"On This Day..."

Post by phonogfp »

“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
Berliner 372786.png
DouglassPolyUS613670.jpg
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