GB280424A - Improvements in diaphragms for use in acoustic reproducing devices - Google Patents
Improvements in diaphragms for use in acoustic reproducing devicesInfo
- Publication number
- GB280424A GB280424A GB8514/27A GB851427A GB280424A GB 280424 A GB280424 A GB 280424A GB 8514/27 A GB8514/27 A GB 8514/27A GB 851427 A GB851427 A GB 851427A GB 280424 A GB280424 A GB 280424A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cone
- periphery
- diaphragm
- ring
- apex
- 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
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
280,424. Menkens, C. March 28, 1927. Diaphragms; loud-speakers; magnetic instruments.-A conical diaphragm 1 for sound reproducing instruments, such as loud-speakers, is formed with apertures 2 and radial and concentric strengthening ribs 3, 4. The ribs 3 instead of being radial may be arranged in a spiral or other desired form. The diaphragm is formed from thin sheet material, such as aluminium, wood, celluloid, papier-machÚ or cardboard, the cone being covered on one or both sides with thin paper, silk, &c. and subsequently treated with a suitable dope. The diaphragm may be formed by spinning, moulding, or, as shown in Figs. 4 and 5, by first cutting out a flat disc which is pressed by suitable dies into a cone shape, the surplus metal being taken up by folding the sheet on itself on lines radiating from the centre so as to form the radial ribs 7. The periphery of the cone may be of channel formation as at 5, Fig. 2, or may be wrapped round a fine wire or cane 6, Fig. 4. Numerous methods of flexibly mounting the periphery of the diaphragm on a baffle ring 9 in a casing 10, Fig. 6, are described, the apex of the cone being directed either towaards or away from the back of the cabinet, an additional member being, in some cases, secured to the inner edge of the ring 9. In the construction, Fig. 2, a number of radial strips 8 are formed from or attached to the periphery of the cone, the outer ends of the strips being secured as shown to the ring 9. In a modification, the strips 8 are replaced by coiled spring wire members. Fig. 6 shows a construction in which the periphery of the diaphragm is attached to a continuous strip of tape 13 secured to the ring 9. In other constructions, the periphery of the cone is mounted either on the inner edge of the ring 9 or on the additional member secured thereto by means of a flat or frustum-shaped continuous strip of flexible material. In constructions in which the ribs 3 extend to the apex of the cone, similarly ribbed washers 30, 31, Fig. 4, are provided so as to obtain a firm connection between the apex of the cone and its actuating armature. In other constructions, the apex of the cone is flattened or otherwise suitably shaped, various forms of washers being described adapted to co-operate therewith. According to the Provisional Specification the periphery of the diaphragm may be left free.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8514/27A GB280424A (en) | 1927-03-28 | 1927-03-28 | Improvements in diaphragms for use in acoustic reproducing devices |
US263797A US1720524A (en) | 1927-03-28 | 1928-03-22 | Diaphragm for use in acoustic instruments |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8514/27A GB280424A (en) | 1927-03-28 | 1927-03-28 | Improvements in diaphragms for use in acoustic reproducing devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB280424A true GB280424A (en) | 1927-11-17 |
Family
ID=9853899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8514/27A Expired GB280424A (en) | 1927-03-28 | 1927-03-28 | Improvements in diaphragms for use in acoustic reproducing devices |
Country Status (2)
Country | Link |
---|---|
US (1) | US1720524A (en) |
GB (1) | GB280424A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011135291A1 (en) * | 2010-04-30 | 2011-11-03 | Gp Acoustics (Uk) Limited | Loudspeaker and diaphragm therefor |
GB2587900A (en) * | 2019-08-23 | 2021-04-14 | Tymphany Acoustic Tech Ltd | A diaphragm for use in an audio transducer and a method of manufacturing a diaphragm |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10244322B2 (en) * | 2016-10-11 | 2019-03-26 | YG Acoustics LLC | Space frame reinforced tweeter dome |
-
1927
- 1927-03-28 GB GB8514/27A patent/GB280424A/en not_active Expired
-
1928
- 1928-03-22 US US263797A patent/US1720524A/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011135291A1 (en) * | 2010-04-30 | 2011-11-03 | Gp Acoustics (Uk) Limited | Loudspeaker and diaphragm therefor |
US8942407B2 (en) | 2010-04-30 | 2015-01-27 | Gp Acoustics (Uk) Limited | Loudspeaker and diaphragm therefor |
GB2587900A (en) * | 2019-08-23 | 2021-04-14 | Tymphany Acoustic Tech Ltd | A diaphragm for use in an audio transducer and a method of manufacturing a diaphragm |
GB2587900B (en) * | 2019-08-23 | 2022-06-22 | Tymphany Acoustic Tech Ltd | A diaphragm for use in an audio transducer and a method of manufacturing a diaphragm |
Also Published As
Publication number | Publication date |
---|---|
US1720524A (en) | 1929-07-09 |
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