GB419589A - Improvements in or relating to phonograph reproducer supports - Google Patents
Improvements in or relating to phonograph reproducer supportsInfo
- Publication number
- GB419589A GB419589A GB21706/34A GB2170634A GB419589A GB 419589 A GB419589 A GB 419589A GB 21706/34 A GB21706/34 A GB 21706/34A GB 2170634 A GB2170634 A GB 2170634A GB 419589 A GB419589 A GB 419589A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pivot
- vertical
- vibrations
- prevented
- spring
- 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
- G11B3/12—Supporting in balanced, counterbalanced or loaded operative position during transducing, e.g. loading in direction of traverse
- G11B3/14—Supporting in balanced, counterbalanced or loaded operative position during transducing, e.g. loading in direction of traverse by using effects of gravity or inertia, e.g. counterweight
Landscapes
- Vibration Prevention Devices (AREA)
- Casings For Electric Apparatus (AREA)
- Testing Or Measuring Of Semiconductors Or The Like (AREA)
Abstract
419,589. Mounting gramophone pick - ups. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A.-(Assignees of Harrison, H. C. ; 94, Bayview Avenue, Port Washington, New York, U.S.A.) July 25, 1934, No. 21706. Convention date, Aug. 2, 1933. [Class 40 (ii).] The vertical pivot of a pick-up arm is resiliently supported, lateral vibrations are prevented, and vertical vibrations are damped. When the horizontal pivot 15, Fig. 2, is in line with the vertical pivot, this pivot 12 is mounted on a ball 30 over a spring 29 in a rubber bearing 25 which prevents lateral vibrations and damps vertical vibrations. The removal of the pivot is prevented by a screw 27. When the horizontal pivot 34, Fig. 4, is to one side of the vertical pivot, this pivot 35 is mounted over a spiral-shaped spring 36 and held laterally between a pair of ball races 42 in a perforated cage 43 supported by an intermediate point of the spring 36 so that the vertical vibrations of the pivot 35 are damped by friction while lateral vibrations are prevented. The distance between the top and bottom ball races determines the amount of friction. The pivot is detachably kept in its mounting by a loose bayonet-joint 39, 40.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US419589XA | 1933-08-02 | 1933-08-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB419589A true GB419589A (en) | 1934-11-14 |
Family
ID=21919258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21706/34A Expired GB419589A (en) | 1933-08-02 | 1934-07-25 | Improvements in or relating to phonograph reproducer supports |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB419589A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE740896C (en) * | 1940-01-26 | 1944-10-11 | Siemens Ag | Device for sound reproduction or recording |
| GB2419025A (en) * | 2004-06-12 | 2006-04-12 | Martin Macritchie Adams | Tone arm |
-
1934
- 1934-07-25 GB GB21706/34A patent/GB419589A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE740896C (en) * | 1940-01-26 | 1944-10-11 | Siemens Ag | Device for sound reproduction or recording |
| GB2419025A (en) * | 2004-06-12 | 2006-04-12 | Martin Macritchie Adams | Tone arm |
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