GB325124A - Improvements in and relating to gramophone or loud-speaker horns and the like - Google Patents
Improvements in and relating to gramophone or loud-speaker horns and the likeInfo
- Publication number
- GB325124A GB325124A GB632829A GB632829A GB325124A GB 325124 A GB325124 A GB 325124A GB 632829 A GB632829 A GB 632829A GB 632829 A GB632829 A GB 632829A GB 325124 A GB325124 A GB 325124A
- Authority
- GB
- United Kingdom
- Prior art keywords
- flare
- sound
- mouth
- gramophone
- loud
- 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
- 238000004049 embossing Methods 0.000 abstract 1
- 238000005192 partition Methods 0.000 abstract 1
- 238000005728 strengthening Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
- G10K11/025—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators horns for impedance matching
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
325,124. Rosen, E. E. Feb. 26, 1929. Sound - magnifying appliances. - A horn f o r gramophones comprises a throat portion dividing into two channels 2 and 3 of gradually increasing cross section which re-unite in a common flare 5, a wedge-shaped partition 6, which terminates well back from the mouth of the flare, joining the two conduits. The portions 2 and 3 contain two semicircular bends 2b, 2c and 3b, 3c which may or may not be in a plane parallel with the mouth of the flare. The sound waves are reflected into the sound chamber by reflectors 2e, 3e. The walls of the sound chamber may be strengthened by embossing or by the addition of strengthening pieces.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB632829A GB325124A (en) | 1929-02-26 | 1929-02-26 | Improvements in and relating to gramophone or loud-speaker horns and the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB632829A GB325124A (en) | 1929-02-26 | 1929-02-26 | Improvements in and relating to gramophone or loud-speaker horns and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB325124A true GB325124A (en) | 1930-02-13 |
Family
ID=9812482
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB632829A Expired GB325124A (en) | 1929-02-26 | 1929-02-26 | Improvements in and relating to gramophone or loud-speaker horns and the like |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB325124A (en) |
-
1929
- 1929-02-26 GB GB632829A patent/GB325124A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB337264A (en) | Improvements relating to acoustic instruments | |
GB325124A (en) | Improvements in and relating to gramophone or loud-speaker horns and the like | |
US1752526A (en) | Sound amplifier | |
US1625325A (en) | Acoustic hobn | |
US1546537A (en) | Horn for radio loud speakers and the like | |
US1475769A (en) | Resonance horn | |
GB315561A (en) | Improvements relating to the horns of gramophones and like instruments for the reproduction of sounds | |
GB246634A (en) | Improvements in or relating to acoustic amplifiers or radiators | |
GB330740A (en) | Improvements in sound amplifiers for gramophones | |
GB323874A (en) | Improvements in and relating to gramophone horns | |
GB297151A (en) | Improvements in or relating to acoustic horns | |
GB306166A (en) | Improvements in sound amplifiers | |
GB145171A (en) | Improvements in gramophones | |
GB314684A (en) | Improvements relating to horns for gramophones, loud speakers and the like | |
GB338691A (en) | Improvements in and relating to sound horns for gramophones or the like | |
GB281792A (en) | Loud speaker trumpet | |
GB321098A (en) | Improvements in or relating to sound amplifiers for gramophones | |
GB215071A (en) | Improvements in or relating to apparatus for collecting or transmitting sound | |
GB274532A (en) | Improvements in or relating to acoustic amplifiers and radiators suitable for use with loud speaking telephonic receivers and other sound producing or reproducing apparatus | |
USD72428S (en) | Design for a loud speaker | |
GB324497A (en) | Horns for sound reproducing instruments | |
US1283571A (en) | Phonograph attachment. | |
GB271571A (en) | Improvements in sound-reproducing machines | |
GB303189A (en) | Improvements in or relating to acoustic instruments | |
GB266273A (en) | Improvements in or relating to gramophone horns |