GB221258A - Improvements in or relating to sound-recording and soundreproducing instruments - Google Patents
Improvements in or relating to sound-recording and soundreproducing instrumentsInfo
- Publication number
- GB221258A GB221258A GB1437523A GB1437523A GB221258A GB 221258 A GB221258 A GB 221258A GB 1437523 A GB1437523 A GB 1437523A GB 1437523 A GB1437523 A GB 1437523A GB 221258 A GB221258 A GB 221258A
- Authority
- GB
- United Kingdom
- Prior art keywords
- celluloid
- disc
- diaphragm
- soundreproducing
- instruments
- 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)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
221,258. Kay, F., and Clifton, W. E. May 31, 1923. Tool arms and mountings.-A metal disc 13, Fig. 6, or equivalent part, from which projects a metal pin 12 adapted to be 'secured to the stylus bar of a gramophone, or to some moving part of a telephone, is connected to a diaphragm 10 by a covering disc 15 of celluloid or other material extending beyond the metal disc and secured at its margin to the diaphragm. In the construction shown in Fig. 3, a stiffening disc 11, which may be of paper, is placed between two discs 14, 15 of celluloid, the three being placed over the metal disc 13. The discs are united together by cement, or the celluloid may be softened bv a solvent and caused to adhere by heat and pressure. The diaphragm, which is preferably of celluloid, may be formed with two concentric corrugations 19, 20, Fig. 1, united by radial corrugations 21.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1437523A GB221258A (en) | 1923-05-31 | 1923-05-31 | Improvements in or relating to sound-recording and soundreproducing instruments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1437523A GB221258A (en) | 1923-05-31 | 1923-05-31 | Improvements in or relating to sound-recording and soundreproducing instruments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB221258A true GB221258A (en) | 1924-09-01 |
Family
ID=10040065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1437523A Expired GB221258A (en) | 1923-05-31 | 1923-05-31 | Improvements in or relating to sound-recording and soundreproducing instruments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB221258A (en) |
-
1923
- 1923-05-31 GB GB1437523A patent/GB221258A/en not_active Expired
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