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SCHOTT ET CIE
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SCHOTT ET CIE
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Publication of FR746811ApublicationCriticalpatent/FR746811A/en
G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
G11B19/20—Driving; Starting; Stopping; Control thereof
G11B19/26—Speed-changing arrangements; Reversing arrangements; Drive-transfer means therefor
G11B19/265—Friction wheel drive
FR746811D1932-10-131932-10-13
Drive device with two different speeds for phonograph record plates
ExpiredFR746811A
(en)