GB189924833A - An Improved Recording and Reproducing Arrangement for Phonographs, Graphophones and other Machines for Reproducing Speech and the like.
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An Improved Recording and Reproducing Arrangement for Phonographs, Graphophones and other Machines for Reproducing Speech and the like.
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Claude Grivolas
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Individual
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Individual
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Holding Or Fastening Of Disk On Rotational Shaft
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Abstract
24,833. Grivolas, C. Dec. 13. Phonographs, graphophones, and like sound-recording instruments.-Relates to the arrangement of the diaphragm in phonog r a h s, graphophones, and other similar instruments. The diaphragm holder v is formed with a flattened opening f and tubular extension t arranged at the side of the diaphragm m, which is held in position by a packing-ring and screwed disc n. The diaphragm carries the recording or reproducing tool.s. In a modified form, the holder is in the form of a block with a groove or recess extending from one edge to the centre behind the diaphragm, the recording &c. tool being mounted in the recess of a central protuberance.
GB189924833D1899-12-131899-12-13An Improved Recording and Reproducing Arrangement for Phonographs, Graphophones and other Machines for Reproducing Speech and the like.
ExpiredGB189924833A
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