GB627990A - Improvements in and relating to motor driven record playing machines - Google Patents
Improvements in and relating to motor driven record playing machinesInfo
- Publication number
- GB627990A GB627990A GB2755146A GB2755146A GB627990A GB 627990 A GB627990 A GB 627990A GB 2755146 A GB2755146 A GB 2755146A GB 2755146 A GB2755146 A GB 2755146A GB 627990 A GB627990 A GB 627990A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- shaft
- supported
- casing
- springs
- 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
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
627,990. Gramophones. LAENG, F. Sept. 13, 1946, No. 27551. [Class 40 (ii)] In a motor-driven gramophone the electric motor is supported within a casing, mounted on a base-plate, by elastic sound-damping means and the driving mechanism includes a sounddamping coupling between the driving shaft and the substantially co-axial driven shaft of the turntable. As shown, the motor 3 has a frame 4 which is supported in the casing 2 by coil springs 11 to 14. Other coil or leaf springs, 15 to 18 between the side walls of the casing 2 and the frame 4 hold the motor resiliently in place from the sides. A screw 26 (Fig. 3) passes through the base-plate 1, on which the casing is mounted, and when tightened bears on the motor 3 in order to hold it firmly in place for transport purposes. The shaft of the motor which carries a governor 7 and a worm 6, is supported by the bearing 8 (Fig. 3). The worm 6 meshes with a worm-wheel 9, the shaft of which is supported by the bearing 10 forming part of the frame 4. This shaft carries at its upper end the lower coupling disc 19 of the sound-damping coupling, which disc is provided with three lugs 20. The turntable shaft 21 is supported by a ball-bearing 27 mounted in a seating 28 integral with the base-plate, and carries at its lower end the upper coupling disc 22, the three lugs 23 of which are resiliently coupled to the lower lugs 20 by springs 24 (Fig. 4). The springs 11 to 18 inclusive may be replaced by members of rubber, resin, glasswool or the like.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2755146A GB627990A (en) | 1946-09-13 | 1946-09-13 | Improvements in and relating to motor driven record playing machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2755146A GB627990A (en) | 1946-09-13 | 1946-09-13 | Improvements in and relating to motor driven record playing machines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB627990A true GB627990A (en) | 1949-08-19 |
Family
ID=10261434
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2755146A Expired GB627990A (en) | 1946-09-13 | 1946-09-13 | Improvements in and relating to motor driven record playing machines |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB627990A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2166585A (en) * | 1984-10-25 | 1986-05-08 | Mitsubishi Electric Corp | An acoustic apparatus |
-
1946
- 1946-09-13 GB GB2755146A patent/GB627990A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2166585A (en) * | 1984-10-25 | 1986-05-08 | Mitsubishi Electric Corp | An acoustic apparatus |
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