GB522538A - Improvements in apparatus for recording or reproducing sound - Google Patents

Improvements in apparatus for recording or reproducing sound

Info

Publication number
GB522538A
GB522538A GB3643738A GB3643738A GB522538A GB 522538 A GB522538 A GB 522538A GB 3643738 A GB3643738 A GB 3643738A GB 3643738 A GB3643738 A GB 3643738A GB 522538 A GB522538 A GB 522538A
Authority
GB
United Kingdom
Prior art keywords
driven
wheels
turntables
dec
records
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3643738A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Publication of GB522538A publication Critical patent/GB522538A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • 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
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • 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

Landscapes

  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Retarders (AREA)

Abstract

522,538. Sound recording and reproducing machines. I.G. FARBENINDUSTRIE AKT.- GES. Dec. 14, 1938, No. 36437. Convention date, Dec. 23, 1937. [Class 40 (ii)] Relates to apparatus for producing or reproducing from two records in continuous succession. According to the invention, the driving mechanisms for the two records are coupled together through differential gearing common to both. As shown, two turntables 1, 2 are driven by toothed or friction wheels 3, 4 connected respectively to wheels 5, 6 of a differential 7. .The planetary wheels 10, 11 are carried by a casing 9 which is formed as a flywheel and is driven by a shaft 8. In use, the turntables are alternately braked, so that whilst one is held the other is driven through the differential gearing.
GB3643738A 1937-12-24 1938-12-14 Improvements in apparatus for recording or reproducing sound Expired GB522538A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI60047D DE708360C (en) 1937-12-24 1937-12-24 Drive device for devices for the continuous successive recording or playback of sound recordings located on two different carriers

Publications (1)

Publication Number Publication Date
GB522538A true GB522538A (en) 1940-06-20

Family

ID=7195150

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3643738A Expired GB522538A (en) 1937-12-24 1938-12-14 Improvements in apparatus for recording or reproducing sound

Country Status (3)

Country Link
DE (1) DE708360C (en)
FR (1) FR847922A (en)
GB (1) GB522538A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236425A (en) * 1989-09-22 1991-04-03 Asahi Optical Co Ltd Disk drive device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236425A (en) * 1989-09-22 1991-04-03 Asahi Optical Co Ltd Disk drive device
US5202797A (en) * 1989-09-22 1993-04-13 Asahi Kogaku Kogyo Kabushiki Kaisha Disk drive device having a single motor for rotating a plurality of disks
GB2236425B (en) * 1989-09-22 1994-03-09 Asahi Optical Co Ltd Disk drive device

Also Published As

Publication number Publication date
FR847922A (en) 1939-10-19
DE708360C (en) 1941-07-18

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