GB378938A - Improvements in or relating to loud speakers and like sound reproducing apparatus - Google Patents
Improvements in or relating to loud speakers and like sound reproducing apparatusInfo
- Publication number
- GB378938A GB378938A GB1424931A GB1424931A GB378938A GB 378938 A GB378938 A GB 378938A GB 1424931 A GB1424931 A GB 1424931A GB 1424931 A GB1424931 A GB 1424931A GB 378938 A GB378938 A GB 378938A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ring
- diaphragm
- baffle board
- rubber
- cone
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/204—Material aspects of the outer suspension of loudspeaker diaphragms
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
378,938. Diaphragms. COLASSI, W. L., Mark Lane Station Buildings, London. May 14, 1931, No. 14249. [Class 40 (iv).] A diaphragm for a loud-speaker or the like, formed as a cone with a peripheral extension lying in a plane at rightangles to the axis of the cone, is mounted by means of a ring or rings of sponge rubber or the like attached by an adhesive to one or both sides of the s a i d peripheral extension, and not projecting beyond it. In the construction shown, the peri, pheral portion 3 a is connected tc the cone 1 by an intermediate reversely bent portion 1a. Rings 4, 4a of sponge rubber are attached by rubber solution or other adhesive to the flange 3a, in which radial cuts at intervals are first made, and a wooden ring 5 is glued to the ring 4. The ring 5 serves for attachment to a chassis 6. The assembly comprising the chassis, the diaphragm, and the actuating unit (not shown) may then be arranged so that the rubber ring 4a bears lightly against a baffle board 8, to which it may be secured by an adhesive, the weight of the unit being taken by supports (not shown) When the diaphragm is to be used without a chassis frame, the ring 5 is dispensed with, and there may be only one rubber ring, which is secured to the baffle board. More than one non-resilient ring such as 5 may be employed, and may be screwed or bolted to the baffle board or cabinet. The internal diameter of the rings and of the aperture in the baffle board (where this is provided), is less than the external diameter of the peripheral extension of the diaphragm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1424931A GB378938A (en) | 1931-05-14 | 1931-05-14 | Improvements in or relating to loud speakers and like sound reproducing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1424931A GB378938A (en) | 1931-05-14 | 1931-05-14 | Improvements in or relating to loud speakers and like sound reproducing apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB378938A true GB378938A (en) | 1932-08-15 |
Family
ID=10037721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1424931A Expired GB378938A (en) | 1931-05-14 | 1931-05-14 | Improvements in or relating to loud speakers and like sound reproducing apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB378938A (en) |
-
1931
- 1931-05-14 GB GB1424931A patent/GB378938A/en not_active Expired
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