GB699397A - Improvements in or relating to convertible sound pick-up devices - Google Patents
Improvements in or relating to convertible sound pick-up devicesInfo
- Publication number
- GB699397A GB699397A GB11141/52A GB1114152A GB699397A GB 699397 A GB699397 A GB 699397A GB 11141/52 A GB11141/52 A GB 11141/52A GB 1114152 A GB1114152 A GB 1114152A GB 699397 A GB699397 A GB 699397A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bearing
- pick
- unit
- switch
- stylus
- 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
- 230000037431 insertion Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
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
- G11B3/44—Styli, e.g. sapphire, diamond
- G11B3/46—Constructions or forms ; Dispositions or mountings, e.g. attachment of point to shank
Landscapes
- Switches With Compound Operations (AREA)
- Adjustable Resistors (AREA)
Abstract
699,397. Gramophone pick-ups. ELECTROACUSTIC GES. May 2, 1952 [May 2, 1951], No. 11141/52. Class 40 (ii) A gramophone pick-up unit is fitted with two styli and is supported in a housing by two bearings, one of which is fixed in the housing while the other is provided in a movable element of a switch device, the operation of which causes the pick-up unit to pivot about the fixed bearing. The pick-up unit 2 (Fig. 1), having two styli 4, 5, is supported in the housing 1 of the tone arm by a blade 6 engaging a bearing 7 of a bearing spring 8, and by a bearing spring 9 suspended on the bearing lug 11 of a switch segment 10, which pivots about pin 12. Clockwise movement of switch 10 about pin 12 from the position shown in Fig. 1 brings stylus 5 into the playing position in place of stylus 4. Two bearing springs 8 and blades 6 may be used to act as pick-up leads. An indication of which stylus is in the operative position is given by markings on the visible exterior surface of the switch 10. A sliding surface 15 may also be provided to guide supporting blade 6 on to the bearing 7 during the insertion of the pick-up unit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE699397X | 1951-05-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB699397A true GB699397A (en) | 1953-11-04 |
Family
ID=6608434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11141/52A Expired GB699397A (en) | 1951-05-02 | 1952-05-02 | Improvements in or relating to convertible sound pick-up devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB699397A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2921145A (en) * | 1954-12-29 | 1960-01-12 | Electro Voice | Phonograph pickup cartridge case and mechanism |
| DE1115943B (en) * | 1955-12-14 | 1961-10-26 | Electroacustic Gmbh | Pickups for speaking machines |
-
1952
- 1952-05-02 GB GB11141/52A patent/GB699397A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2921145A (en) * | 1954-12-29 | 1960-01-12 | Electro Voice | Phonograph pickup cartridge case and mechanism |
| DE1115943B (en) * | 1955-12-14 | 1961-10-26 | Electroacustic Gmbh | Pickups for speaking machines |
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