Record stamper playback turntable

Details Record stamper playback turntable Record stamper playback turntable

1977-10-11

1979-05-08

Phillips, Charles E.

Undertaking

274 39A, G11B 360

Patent

active

041532570

ABSTRACT:
A turntable to enable playback of record matrices and stampers is provided. The turntable rotates in the direction opposite that of a conventional turntable and is provided with a tone arm carrying a stylus designed to ride the ridges of the stamper. Magnetic members on the table support surfaces hold the stamper flat to prevent "oil canning". The magnetic poles of the members are oriented radially to minimize the effect of the magnetic members on the turntable transducer. The tracking force of the tone arm is variable by means of a sliding weight.

REFERENCES:
patent: 3143199 (1964-08-01), Gerber
patent: 3297830 (1967-01-01), Baloghy
patent: 4071252 (1978-01-01), Gillespie

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