GB658214A - Improvements in phonograph reproducers - Google Patents
Improvements in phonograph reproducersInfo
- Publication number
- GB658214A GB658214A GB10360/49A GB1036049A GB658214A GB 658214 A GB658214 A GB 658214A GB 10360/49 A GB10360/49 A GB 10360/49A GB 1036049 A GB1036049 A GB 1036049A GB 658214 A GB658214 A GB 658214A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arm
- viscous fluid
- hemispherical
- support
- damped
- 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
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/02—Arrangements of heads
- G11B3/10—Arranging, supporting, or driving of heads or of transducers relatively to record carriers
Landscapes
- Support Of The Bearing (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
658,214. Bearings. COLUMBIA BROADCASTING SYSTEM, Inc. April 19, 1949, No. 10360. Convention date, May 29, 1948. [Class 12 (i)] [Also in Group XXXVIII] Resonance in a gramophone pick-up arm is damped by the introduction of a viscous fluid between the surfaces of the bearing of the arm. In one form, Fig. 1, the arm is supported on a stationary pivotal point and has a hemispherical portion extending, with a small clearance for the viscous fluid, into a hemispherical cavity in the support. In another embodiment, Fig. 3 (not shown), the arm is provided with a hemispherical socket, while the support is in the form of a solid hemisphere, the arm pivoting on the film of viscous fluid between the surfaces. In a third embodiment, Fig. 4 (not shown), two flanged surfaces are employed.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US658214XA | 1948-05-29 | 1948-05-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB658214A true GB658214A (en) | 1951-10-03 |
Family
ID=22065322
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB10360/49A Expired GB658214A (en) | 1948-05-29 | 1949-04-19 | Improvements in phonograph reproducers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB658214A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2173941A (en) * | 1985-04-22 | 1986-10-22 | Philips Nv | Pivotal-arm device with scanning unit |
-
1949
- 1949-04-19 GB GB10360/49A patent/GB658214A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2173941A (en) * | 1985-04-22 | 1986-10-22 | Philips Nv | Pivotal-arm device with scanning unit |
GB2173941B (en) * | 1985-04-22 | 1989-06-28 | Philips Nv | Pivotal-arm device with a scanning unit for recording and/or reading information on a disc-shaped record carrier |
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