GB224125A - Improvements in or relating to horns, trumpets and like acoustic amplifiers, suitable for loud speaking telephonic receivers and other sound producing or reproducing apparatus - Google Patents
Improvements in or relating to horns, trumpets and like acoustic amplifiers, suitable for loud speaking telephonic receivers and other sound producing or reproducing apparatusInfo
- Publication number
- GB224125A GB224125A GB150124A GB150124A GB224125A GB 224125 A GB224125 A GB 224125A GB 150124 A GB150124 A GB 150124A GB 150124 A GB150124 A GB 150124A GB 224125 A GB224125 A GB 224125A
- Authority
- GB
- United Kingdom
- Prior art keywords
- trumpets
- horns
- relating
- reproducing apparatus
- sound producing
- 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
- G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
224,125. Graham, E. A. Jan. 18, 1924. Drawings to Specification. Sound magnifying and directing appliances.- A loud-speaker &c. horn is lined, either throughout or over the narrower inlet portion only, with a hard smooth-surfaced enamel, whilst the outer surface and, if desired, the inner surface of the bell portion is coated with a rough-surfaced sound-deadening enamel.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB150124A GB224125A (en) | 1924-01-18 | 1924-01-18 | Improvements in or relating to horns, trumpets and like acoustic amplifiers, suitable for loud speaking telephonic receivers and other sound producing or reproducing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB150124A GB224125A (en) | 1924-01-18 | 1924-01-18 | Improvements in or relating to horns, trumpets and like acoustic amplifiers, suitable for loud speaking telephonic receivers and other sound producing or reproducing apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB224125A true GB224125A (en) | 1924-11-06 |
Family
ID=9723085
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB150124A Expired GB224125A (en) | 1924-01-18 | 1924-01-18 | Improvements in or relating to horns, trumpets and like acoustic amplifiers, suitable for loud speaking telephonic receivers and other sound producing or reproducing apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB224125A (en) |
-
1924
- 1924-01-18 GB GB150124A patent/GB224125A/en not_active Expired
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