GB320198A - Improvements relating to sound producers such as loud speakers - Google Patents
Improvements relating to sound producers such as loud speakersInfo
- Publication number
- GB320198A GB320198A GB2517328A GB2517328A GB320198A GB 320198 A GB320198 A GB 320198A GB 2517328 A GB2517328 A GB 2517328A GB 2517328 A GB2517328 A GB 2517328A GB 320198 A GB320198 A GB 320198A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- pillars
- edges
- frames
- column
- 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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
- H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Toys (AREA)
Abstract
320,198. La Bourdonnais [Prince de Mahe], C. M. de C. de. Sept. 1, 1928. Diaphragms; loud-speakers. - A diaphragm made up of two curved sheets of paper is contained in an acoustic reflector together with the actuating mechanism, the mutually. joined edges being suspended vertically and the outermost edges being supported on pillars. The diaphragm a, b, is suspended by a thread d attached to the united edge, c, its other edges being mounted on pillars h, i, attached to the frames e, f, pivoted on a column g. The frames e, f can rotate about the column g, and the form and tension of the diaphragm can be altered by rotation of the pillars h, i. The diaphragm is actuated by mechanisms j, preferably of the balanced armature type described in Specification 305,614, [Class 40 (v), Wireless signalling &c.], and is supported in a casing, which may be rectangular, Fig. 2, or triangular, Fig. 4, in section, by rubber blocks k, m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2517328A GB320198A (en) | 1928-09-01 | 1928-09-01 | Improvements relating to sound producers such as loud speakers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2517328A GB320198A (en) | 1928-09-01 | 1928-09-01 | Improvements relating to sound producers such as loud speakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB320198A true GB320198A (en) | 1929-10-10 |
Family
ID=10223408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2517328A Expired GB320198A (en) | 1928-09-01 | 1928-09-01 | Improvements relating to sound producers such as loud speakers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB320198A (en) |
-
1928
- 1928-09-01 GB GB2517328A patent/GB320198A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1270032A (en) | Loudspeaker | |
| GB320198A (en) | Improvements relating to sound producers such as loud speakers | |
| GB320654A (en) | Improvements in loud speakers for wireless apparatus or the like | |
| GB308801A (en) | Improvements in sound reproducing apparatus, such as loud-speaking telephonic receivers | |
| GB312756A (en) | Improvements in and relating to electrically operated loud speakers | |
| GB448189A (en) | Improvements in or relating to moving coil loudspeakers | |
| GB455208A (en) | Improvements in electro-dynamic loud speakers, microphones and the like sound reproducing and recording apparatus | |
| GB243837A (en) | Improvements in sound producing devices | |
| US1586452A (en) | Loud-speaking apparatus of the electromagnetic type | |
| GB328237A (en) | Improvements in or relating to talking machines, and loud speakers | |
| GB274847A (en) | Loud speaker | |
| GB265908A (en) | Loud speakers | |
| GB268338A (en) | Loud speaker | |
| GB246099A (en) | Improvements in sound reproducing devices | |
| GB319118A (en) | Stringed loudspeaker | |
| GB328840A (en) | Improvements in or relating to the reproduction of sound | |
| GB382868A (en) | Improvements relating to sound amplifying apparatus | |
| GB300849A (en) | A loud speaker for radio-telephonic purposes | |
| GB263481A (en) | Loud speakers | |
| GB314691A (en) | Diaphragm for loud speakers or the like | |
| GB294294A (en) | Improvements in or relating to electro-magnetic sound reproducing devices | |
| GB257526A (en) | Improvements in or relating to loudspeakers | |
| GB362589A (en) | Improvements in loud speaker horn | |
| GB267790A (en) | Improvements in and relating to loud speakers for wireless receiving apparatus | |
| GB286193A (en) | Improvements in or relating to combined loud-speakers and time-pieces for use with wireless-receiving devices and the like |