GB350748A - Improvements in sound reproducing and recording devices - Google Patents
Improvements in sound reproducing and recording devicesInfo
- Publication number
- GB350748A GB350748A GB1975130A GB1975130A GB350748A GB 350748 A GB350748 A GB 350748A GB 1975130 A GB1975130 A GB 1975130A GB 1975130 A GB1975130 A GB 1975130A GB 350748 A GB350748 A GB 350748A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stylus
- fin
- polepieces
- armature
- needle
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
Abstract
350,748. Phonographic recorders and reproducers. HALL, C. P. and HOUGH, T., 62, Glengall Road, Peckham, London. June 28, 1930, No. 19751. [Class 40 (iv).] An electric soundreproducing or recording device comprises a vibratory armature which is constituted in part by a needle or stylus and in part by a tail-piece or fin, the needle or stylus and tail-piece or fin, which are formed of magnetic material, being arranged to vibrate between different pairs of magnetic poles. A U-shaped permanent magnet 1 is fitted with polepieces 2 having flanges 6, 7 forming two pairs of poles between which the armature vibrates. The armature comprises a stylus 8 and a fin 9 carried by a support 10, which is resiliently pivoted by means of rubber &c. tubes or rods 21 engaging grooves in the support 10 and in bearing blocks 14 adjustable in the polepieces 2 by means of slidable stems 16 and screws 22. Plates 17 screwed to the outer faces of the polepieces 2 are provided with slotted lugs 18 to receive guide pins or screws 20 on the blocks 14. The stylus 8 and the fin 9 are surrounded by separate speech coils 25, 26.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1975130A GB350748A (en) | 1930-06-28 | 1930-06-28 | Improvements in sound reproducing and recording devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1975130A GB350748A (en) | 1930-06-28 | 1930-06-28 | Improvements in sound reproducing and recording devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB350748A true GB350748A (en) | 1931-06-18 |
Family
ID=10134594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1975130A Expired GB350748A (en) | 1930-06-28 | 1930-06-28 | Improvements in sound reproducing and recording devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB350748A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2542457A (en) * | 1946-12-31 | 1951-02-20 | Soundscriber Corp | Electrodynamic pickup |
-
1930
- 1930-06-28 GB GB1975130A patent/GB350748A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2542457A (en) * | 1946-12-31 | 1951-02-20 | Soundscriber Corp | Electrodynamic pickup |
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