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Eugene Parisse
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Holding Or Fastening Of Disk On Rotational Shaft
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Abstract
26,621. Parisse, E. May 27, [date applied for under Sec. 103 of Patents &c. Act, A.D. 1883]. Phonographs are constructed with a number of recording and reproducing tools mounted on diaphragms of different diameter and thickness so as to make, or reproduce from, a series of parallel records simultaneously. The diaphragms may be mounted in any ordinary way, and may be grouped or be in line, the feed-screw being so adjusted that the traces do not clash.