GB522538A - Improvements in apparatus for recording or reproducing sound - Google Patents
Improvements in apparatus for recording or reproducing soundInfo
- 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
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.
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2236425A (en) * | 1989-09-22 | 1991-04-03 | Asahi Optical Co Ltd | Disk drive device |
-
1937
- 1937-12-24 DE DEI60047D patent/DE708360C/en not_active Expired
-
1938
- 1938-12-14 GB GB3643738A patent/GB522538A/en not_active Expired
- 1938-12-22 FR FR847922D patent/FR847922A/en not_active Expired
Cited By (3)
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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