GB196353A - Improvements in or relating to sound reproducing and sound recording instruments - Google Patents
Improvements in or relating to sound reproducing and sound recording instrumentsInfo
- Publication number
- GB196353A GB196353A GB159722A GB159722A GB196353A GB 196353 A GB196353 A GB 196353A GB 159722 A GB159722 A GB 159722A GB 159722 A GB159722 A GB 159722A GB 196353 A GB196353 A GB 196353A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sound
- box
- rear wall
- diaphragm
- diaphragms
- 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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Auxiliary Devices For Music (AREA)
Abstract
196,353. Collenette, B., Jones, Sir W. Yarworth-,and Partridge, Sir C. Jan. 18, 1922. Multiple-diaphragm sound-boxes; sound-boxes, insulating.-A gramophone or like sound-box is provided with two or more auxiliary diaphragms 16, 17 (which may be of metal), located behind the main diaphragm 13, each of the auxiliary diaphragms having a central aperture 23. The apertures are preferably of progressively increasing size, that in the diaphragm nearest to the main one 13 being the smallest. The diaphragms are held between resilient rings 12, 15, secured in position by a flange 21 on the rear wall of the casing. In conjunction with a sound-box as described above, an insulating device for attachment to the tone-arm may be provided, consisting of two annular members 30, 34 of rubber or the like fitting one within the other and secured to the rear wall of the sound-box. The inner member 34, which is more flexible than the part 30, has a thin metal sleeve 36. A perforated metal disc 38 is inserted at the inner end of the tube 34, adjacent to the rear wall 31 of the casing but insulated therefrom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB159722A GB196353A (en) | 1922-01-18 | 1922-01-18 | Improvements in or relating to sound reproducing and sound recording instruments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB159722A GB196353A (en) | 1922-01-18 | 1922-01-18 | Improvements in or relating to sound reproducing and sound recording instruments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB196353A true GB196353A (en) | 1923-04-18 |
Family
ID=9724697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB159722A Expired GB196353A (en) | 1922-01-18 | 1922-01-18 | Improvements in or relating to sound reproducing and sound recording instruments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB196353A (en) |
-
1922
- 1922-01-18 GB GB159722A patent/GB196353A/en not_active Expired
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