GB321806A - Loud speaker and like acoustic apparatus - Google Patents
Loud speaker and like acoustic apparatusInfo
- Publication number
- GB321806A GB321806A GB3169628A GB3169628A GB321806A GB 321806 A GB321806 A GB 321806A GB 3169628 A GB3169628 A GB 3169628A GB 3169628 A GB3169628 A GB 3169628A GB 321806 A GB321806 A GB 321806A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- springs
- attached
- centre
- gravity
- 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)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
321,806. French, C. Oct. 31, 1928. Diaphragms.-The conical or dish-shaped diaphragm of a loud-speaker is suspended by one or more spiral springs attached at one end to the diaphragm and at the other end to a fixed part of the instrument. The diaphragm 1 has two springs 4, 5 attached to the diaphragm in a plane substantially through its centre of gravity, the other ends of the springs being attached to the casing. The springs, which may be made of parchment, stiff paper, light metal, &c., are of rectangular cross-section and are bent at the ends as at 6, 7, Fig. 2, so as to give greater axial than radial freedom. The ends 10 are slotted to enable adjustment of tension. If the convolutions run in opposite directions, the springs are arranged to be equi-distant from the plane containing the centre of gravity of the diaphragm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3169628A GB321806A (en) | 1928-10-31 | 1928-10-31 | Loud speaker and like acoustic apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3169628A GB321806A (en) | 1928-10-31 | 1928-10-31 | Loud speaker and like acoustic apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB321806A true GB321806A (en) | 1929-11-21 |
Family
ID=10327044
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3169628A Expired GB321806A (en) | 1928-10-31 | 1928-10-31 | Loud speaker and like acoustic apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB321806A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2860721A (en) * | 1954-03-24 | 1958-11-18 | Fauthal A Hassan | Sound reproducing device |
-
1928
- 1928-10-31 GB GB3169628A patent/GB321806A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2860721A (en) * | 1954-03-24 | 1958-11-18 | Fauthal A Hassan | Sound reproducing device |
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