GB566398A - Improvements in or relating to loud speakers and loud speaker horns - Google Patents
Improvements in or relating to loud speakers and loud speaker hornsInfo
- Publication number
- GB566398A GB566398A GB994443A GB994443A GB566398A GB 566398 A GB566398 A GB 566398A GB 994443 A GB994443 A GB 994443A GB 994443 A GB994443 A GB 994443A GB 566398 A GB566398 A GB 566398A
- Authority
- GB
- United Kingdom
- Prior art keywords
- casing
- unit
- fitted
- horn
- 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
- 238000005266 casting Methods 0.000 abstract 1
- 210000004907 gland Anatomy 0.000 abstract 1
- 239000010985 leather Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
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
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
566,398. Sound-magnifying appliances. FOUNTAIN, Ltd., G. R., HOULGATE, H. J., and WHEELER, G. C. June 21, 1943, No. 9944. [Class 13] [Also in Group XXXIX] In a loud-speaker unit designed to be substantially waterproof, for use, for example in an outdoor public address system, the horn mouth 1 fits on to the expanded front end 36 of a tubular casing 2 containing the drive unit 4, the rear end 3 of the casing being closed so that the drive unit can only be inserted from the front, and the unit 2 also carrying a moulding or casting 10 to which are fitted re-entrant horn members 14, 17. The unit 4 and the member 10 are made a close fit in the casing 2 and the unit is held in position by a screw 7 in the rear end of the casing engaging a member 8 secured to the matching transformer 5 which is in turn secured to the drive unit 4. The intermediate horn member 17 is fitted on ribs 22 on the member 10 and the closed end of the member 6 and the front face of the member 10 are provided with conical sound-reflecting surfaces 23, 24, 25, 26 as shown. Sealing elements 9, 34, 35 of rubber or leather are fitted to the head of the screw 7, at the end of extension 36, and at the head of screws 11, respectively. The whole unit may be supported from a stirrup bracket 30 mounted by trunnions on a split clamping band 28 so as to give universal adjustment. The band 28 may clamp the horn mouth 5 on to the casing extension 36 or the casing 2 on to the unit 4. The electrical leads are taken through a gland 32 in the wall of casing 2 or through the horn mouth 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB994443A GB566398A (en) | 1943-06-21 | 1943-06-21 | Improvements in or relating to loud speakers and loud speaker horns |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB994443A GB566398A (en) | 1943-06-21 | 1943-06-21 | Improvements in or relating to loud speakers and loud speaker horns |
Publications (1)
Publication Number | Publication Date |
---|---|
GB566398A true GB566398A (en) | 1944-12-28 |
Family
ID=9881649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB994443A Expired GB566398A (en) | 1943-06-21 | 1943-06-21 | Improvements in or relating to loud speakers and loud speaker horns |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB566398A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1030876B (en) * | 1952-05-09 | 1958-05-29 | Atlas Werke Ag | Bell-shaped loudspeaker horn made of cast metal |
DE1090718B (en) * | 1959-04-29 | 1960-10-13 | Siemens Ag | Jet-proof and splash-proof funnel loudspeaker |
GB2145905A (en) * | 1983-08-31 | 1985-04-03 | Kobishi Electric Co Ltd | Audible warning device |
US4963855A (en) * | 1990-02-21 | 1990-10-16 | Kobishi Electric Co., Inc. Ltd. | Warning sound generating device |
-
1943
- 1943-06-21 GB GB994443A patent/GB566398A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1030876B (en) * | 1952-05-09 | 1958-05-29 | Atlas Werke Ag | Bell-shaped loudspeaker horn made of cast metal |
DE1090718B (en) * | 1959-04-29 | 1960-10-13 | Siemens Ag | Jet-proof and splash-proof funnel loudspeaker |
GB2145905A (en) * | 1983-08-31 | 1985-04-03 | Kobishi Electric Co Ltd | Audible warning device |
US4963855A (en) * | 1990-02-21 | 1990-10-16 | Kobishi Electric Co., Inc. Ltd. | Warning sound generating device |
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