GB222952A - Improvements in or relating to gramophones and like sound reproducing apparatus - Google Patents
Improvements in or relating to gramophones and like sound reproducing apparatusInfo
- Publication number
- GB222952A GB222952A GB1787823A GB1787823A GB222952A GB 222952 A GB222952 A GB 222952A GB 1787823 A GB1787823 A GB 1787823A GB 1787823 A GB1787823 A GB 1787823A GB 222952 A GB222952 A GB 222952A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sound
- box
- gramophones
- plate
- relating
- 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
- 238000010276 construction Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification 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)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
222,952. Cullum, H. J. July 10, 1923. Horns, arranging and supporting; sound-box casings.-Relates to gramophones and the like of the kind in which the sound-box encloses the diaphragm on both sides, and is provided with a pair of horns. According to the invention, in combination with a sound-box c which is adapted to be connected in the usual way to the tone-arm l, there is provided a secondary horn a which is relatively small and is mounted on a plate b secured to the front of the body of the sound-box. The plate has a radial opening for the passage of the stylus-arm g. In the construction shown, the plate b also serves to clamp the diaphragm d in place, but in a modification it is designed as an external attachment to an ordinary sound-box, on which it is detachably clipped or screwed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1787823A GB222952A (en) | 1923-07-10 | 1923-07-10 | Improvements in or relating to gramophones and like sound reproducing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1787823A GB222952A (en) | 1923-07-10 | 1923-07-10 | Improvements in or relating to gramophones and like sound reproducing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB222952A true GB222952A (en) | 1924-10-10 |
Family
ID=10102786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1787823A Expired GB222952A (en) | 1923-07-10 | 1923-07-10 | Improvements in or relating to gramophones and like sound reproducing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB222952A (en) |
-
1923
- 1923-07-10 GB GB1787823A patent/GB222952A/en not_active Expired
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