GB310127A - Improvements in or relating to sound reproducers for use in wireless telephony - Google Patents
Improvements in or relating to sound reproducers for use in wireless telephonyInfo
- Publication number
- GB310127A GB310127A GB534028A GB534028A GB310127A GB 310127 A GB310127 A GB 310127A GB 534028 A GB534028 A GB 534028A GB 534028 A GB534028 A GB 534028A GB 310127 A GB310127 A GB 310127A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cone
- corrugations
- corrugation
- margin
- sound reproducers
- 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
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
- H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
310,127. Bridger, R. O. Feb, 20, 1928. Diaphragms. - A conical diaphragm a for sound reproducers is formed concentrically with oppositely directed corrugations b, c close to its margin, the corrugations being spaced apart by an annulus d. The cone is also formed with a flat annular margin e, bound with felt and having its outer half secured to a ring &c. (not shown). The diaphragm may be formed from a sheet of cotton gauze, buckram, &c. painted on one side with a plastic paper preparation known under the registered Trade Mark " Hycolite " and pressed between heated dies so as to stretch the material and mould it to the required shape. In order to increase the flexibility of the cone at the corrugated portion thereof, it may be treated from the outer edge of the outer corrugation to the inner edge of the inner corrugation with glycerine. Such treatment is apt to flatten out the material of the cone as shown in Fig. 3. According to the Provisional Specification, the cone may be formed with an embossed pattern within the corrugations.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB534028A GB310127A (en) | 1928-02-20 | 1928-02-20 | Improvements in or relating to sound reproducers for use in wireless telephony |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB534028A GB310127A (en) | 1928-02-20 | 1928-02-20 | Improvements in or relating to sound reproducers for use in wireless telephony |
Publications (1)
Publication Number | Publication Date |
---|---|
GB310127A true GB310127A (en) | 1929-04-25 |
Family
ID=9794267
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB534028A Expired GB310127A (en) | 1928-02-20 | 1928-02-20 | Improvements in or relating to sound reproducers for use in wireless telephony |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB310127A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3072213A (en) * | 1959-09-28 | 1963-01-08 | Gen Electric | Loudspeaker cone suspension |
US3130811A (en) * | 1959-09-28 | 1964-04-28 | Gen Electric | Loudspeaker cone suspension |
-
1928
- 1928-02-20 GB GB534028A patent/GB310127A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3072213A (en) * | 1959-09-28 | 1963-01-08 | Gen Electric | Loudspeaker cone suspension |
US3130811A (en) * | 1959-09-28 | 1964-04-28 | Gen Electric | Loudspeaker cone suspension |
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