GB326272A - Improvements in or relating to sound record pick-up devices - Google Patents
Improvements in or relating to sound record pick-up devicesInfo
- Publication number
- GB326272A GB326272A GB3795028A GB3795028A GB326272A GB 326272 A GB326272 A GB 326272A GB 3795028 A GB3795028 A GB 3795028A GB 3795028 A GB3795028 A GB 3795028A GB 326272 A GB326272 A GB 326272A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- magnet
- secured
- stylus
- fitted
- 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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Abstract
326,272. Turner, P. K., and Robinson, E., H. Dec. 22, 1928. Gramophone pick-ups.-The armature of a pickup device has its pivot disposed outside the magnet so that the armature extends through an aperture midway between the polar extremities into the polar air-gap, the stylus being directly secured to the armature fulcrum. A metal tube 5, plugged with resilient material 15, extends through the hole in the magnet, Figs. 1 and 2, and is carried by a plate 6 under which is fixed a cover plate 7 having a rectangular channel 8 which forms the armature bearing. The armature 9 is provided with pivot pins 11 fitted with rubber sleeves 12. a similar sleeve 10 separating the armature from the cover plate 7. The plates 6, 7, tube 5, and armature 9 may form a complete unit as shown in Figs. 6 and 7. The lower end of the armature receives the stylus 18 secured by a set screw 19. The plates 6, 7 are secured to the magnet so as to permit of longitudinal adjustment for centring the armature in the pole gap, elongated screw holes 27 being provided for this purpose. in a modified construction, Fig. 9, the armature is reduced in length, L-shaped extensions n', s' being fitted to the magnet poles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3795028A GB326272A (en) | 1928-12-22 | 1928-12-22 | Improvements in or relating to sound record pick-up devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3795028A GB326272A (en) | 1928-12-22 | 1928-12-22 | Improvements in or relating to sound record pick-up devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB326272A true GB326272A (en) | 1930-03-13 |
Family
ID=10400167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3795028A Expired GB326272A (en) | 1928-12-22 | 1928-12-22 | Improvements in or relating to sound record pick-up devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB326272A (en) |
-
1928
- 1928-12-22 GB GB3795028A patent/GB326272A/en not_active Expired
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