GB1460443A - Gramophone pick-up arms - Google Patents
Gramophone pick-up armsInfo
- Publication number
- GB1460443A GB1460443A GB209773A GB209773A GB1460443A GB 1460443 A GB1460443 A GB 1460443A GB 209773 A GB209773 A GB 209773A GB 209773 A GB209773 A GB 209773A GB 1460443 A GB1460443 A GB 1460443A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arm
- pick
- tangential
- electro
- shutter
- 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
- G11B3/34—Driving or guiding during transducing operation
- G11B3/38—Guiding, e.g. constructions or arrangements providing linear or other special tracking characteristics
Landscapes
- Supporting Of Heads In Record-Carrier Devices (AREA)
Abstract
1460443 Pick up arm R H RUSHTON 11 April 1974 [15 Jan 1973] 2097/73 Heading G5R Pick up arm 2 is mounted in gimbals 4 at one end of an arm 6 which is mounted at P for horizontal pivoting movement and is held or released, in response to the position of the pick up arm, to maintain the pick up arm tangential to the record groove being scanned. Movement of the arm 2 is detected by a lampphotocell arrangement in unit 12 which cooperates with a shutter arm 8 secured to gimbal ring 10 and controls the braking effect of an electro-magnet 20 which is mounted at the other end of arm 6 and reacts with a soft iron strip 22. If the pick up arm inclines inwardly past the tangential position the shutter 8 decreases the light incident on the photocell whereby the braking effect of the electro-magnet decreases and needle drag moves arm 6 clockwise to restore the tangential position of the arm. On outward inclination of the arm 2 the arm 6 is braked and held until the pick up arm resumes its tangential position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB209773A GB1460443A (en) | 1973-01-15 | 1973-01-15 | Gramophone pick-up arms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB209773A GB1460443A (en) | 1973-01-15 | 1973-01-15 | Gramophone pick-up arms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1460443A true GB1460443A (en) | 1977-01-06 |
Family
ID=9733546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB209773A Expired GB1460443A (en) | 1973-01-15 | 1973-01-15 | Gramophone pick-up arms |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1460443A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2413745A1 (en) * | 1977-12-30 | 1979-07-27 | Pascolini Jean Charles | Servo control for record player pick=up arm - has pivot allowing horizontal balancing about carriage with reflector |
| FR2458122A1 (en) * | 1979-05-31 | 1980-12-26 | Bulgarsko Radio | COMPENSATION DEVICE FOR THE HORIZONTAL ANGULAR ERROR OF AN ELECTROPHONE ARM |
-
1973
- 1973-01-15 GB GB209773A patent/GB1460443A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2413745A1 (en) * | 1977-12-30 | 1979-07-27 | Pascolini Jean Charles | Servo control for record player pick=up arm - has pivot allowing horizontal balancing about carriage with reflector |
| FR2458122A1 (en) * | 1979-05-31 | 1980-12-26 | Bulgarsko Radio | COMPENSATION DEVICE FOR THE HORIZONTAL ANGULAR ERROR OF AN ELECTROPHONE ARM |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |