FR738290A - Appareil permettant d'augmenter la durée d'audition enregistrable sur un disque de phonographe en lui imprimant une vitesse de rotation variable
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Appareil permettant d'augmenter la durée d'audition enregistrable sur un disque de phonographe en lui imprimant une vitesse de rotation variable
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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
FR738290D1932-06-081932-06-08Appareil permettant d'augmenter la durée d'audition enregistrable sur un disque de phonographe en lui imprimant une vitesse de rotation variable
ExpiredFR738290A
(fr)
Appareil permettant d'augmenter la durée d'audition enregistrable sur un disque de phonographe en lui imprimant une vitesse de rotation variable