GB261871A - Improvements in or relating to horns for use in wireless telephone or other sound reproducing apparatus - Google Patents
Improvements in or relating to horns for use in wireless telephone or other sound reproducing apparatusInfo
- Publication number
- GB261871A GB261871A GB2302825A GB2302825A GB261871A GB 261871 A GB261871 A GB 261871A GB 2302825 A GB2302825 A GB 2302825A GB 2302825 A GB2302825 A GB 2302825A GB 261871 A GB261871 A GB 261871A
- Authority
- GB
- United Kingdom
- Prior art keywords
- horns
- relating
- reproducing apparatus
- wireless telephone
- sound reproducing
- 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
-
- 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
261,871. Johnson & Phillips, Ltd., and Penney, J. R. Sept. 15, 1925. Loud-speakers.-A loud-speaker horn 4 has a detachable mouth-piece 4b which fits within themain portion and is secured by means of inclined bayonet slots 8 therein co-operating with studs 7 to form a tight joint. The loud speaker is supported on feet 5, 6, and the lowest part of the horn forms a dust-trap. Specifications 218,031, 218,753, and 219,070 are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2302825A GB261871A (en) | 1925-09-15 | 1925-09-15 | Improvements in or relating to horns for use in wireless telephone or other sound reproducing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2302825A GB261871A (en) | 1925-09-15 | 1925-09-15 | Improvements in or relating to horns for use in wireless telephone or other sound reproducing apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB261871A true GB261871A (en) | 1926-12-02 |
Family
ID=10188943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2302825A Expired GB261871A (en) | 1925-09-15 | 1925-09-15 | Improvements in or relating to horns for use in wireless telephone or other sound reproducing apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB261871A (en) |
-
1925
- 1925-09-15 GB GB2302825A patent/GB261871A/en not_active Expired
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