GB348547A - Improvements in or relating to acoustic horns - Google Patents
Improvements in or relating to acoustic hornsInfo
- Publication number
- GB348547A GB348547A GB476430A GB476430A GB348547A GB 348547 A GB348547 A GB 348547A GB 476430 A GB476430 A GB 476430A GB 476430 A GB476430 A GB 476430A GB 348547 A GB348547 A GB 348547A
- Authority
- GB
- United Kingdom
- Prior art keywords
- opening
- flare
- horn
- bend
- plane
- 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
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
- G10K9/20—Sounding members
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
348,547. Acoustic horns. WESTERN ELECTRIC CO., Ltd., Bush House, Aldwych, London.-(Bell Telephone Laboratories, Inc. ; 463, West Street, New York, U.S.A.) Feb. 12, 1930, No. 4764. [Class 13.] An acoustic horn which occupies a minimum of space in a direction perpendicular to the plane of its opening or flared end 1 has a plurality of tapered sound passages merging into a common flare 2, and each passage has a bend 5 of 90‹ or slightly more near the opening, a straight portion 9 extending from this bend in a plane substantially parallel to the plane of the opening, another bend 13 through about 180‹ about centres of curvature remote from the flare, followed by a substantially straight portion extending towards the flare. Divided throat portions may be connected at each of the input ends 17 so that any desired number of receivers may be used. The horn may be made in sections of steel with angle-iron flanges connecting them and a flange 16 at the opening may be provided for fixing the horn to any means of support such as a theatre screen or to a separate drop to be moved with the screen. Suspension chains may be connected to eyebolts 21 .. 24. Sheets of damping material such as flannel may be stuck to the surface of the horn if and where required. In a modification, the return portions 11 of the bends 13 are made approximately parallel to the portions 9 and penetrate the side of the flared opening to emerge centrally behind the flare after joining together inside the mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB476430A GB348547A (en) | 1930-02-12 | 1930-02-12 | Improvements in or relating to acoustic horns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB476430A GB348547A (en) | 1930-02-12 | 1930-02-12 | Improvements in or relating to acoustic horns |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB348547A true GB348547A (en) | 1931-05-12 |
Family
ID=9783342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB476430A Expired GB348547A (en) | 1930-02-12 | 1930-02-12 | Improvements in or relating to acoustic horns |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB348547A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114441636A (en) * | 2021-12-27 | 2022-05-06 | 中核武汉核电运行技术股份有限公司 | Centering method for horn mouth cylindrical ring pipe mechanical arm |
-
1930
- 1930-02-12 GB GB476430A patent/GB348547A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114441636A (en) * | 2021-12-27 | 2022-05-06 | 中核武汉核电运行技术股份有限公司 | Centering method for horn mouth cylindrical ring pipe mechanical arm |
| CN114441636B (en) * | 2021-12-27 | 2024-02-09 | 中核武汉核电运行技术股份有限公司 | Centering method for bell-mouth tube annular tube mechanical arm |
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