GB391696A - Improved method of and means for manufacturing cones for loud speakers and other purposes - Google Patents
Improved method of and means for manufacturing cones for loud speakers and other purposesInfo
- Publication number
- GB391696A GB391696A GB2878932A GB2878932A GB391696A GB 391696 A GB391696 A GB 391696A GB 2878932 A GB2878932 A GB 2878932A GB 2878932 A GB2878932 A GB 2878932A GB 391696 A GB391696 A GB 391696A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mould
- purposes
- improved method
- cones
- loud speakers
- 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
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
- H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
391,696. Diaphragms. MILLBOURN, A. S. and MILLBOURN & CO., Ltd., A., Tuckenhay Mills, Totnes, Devon. Oct. 14, 1932, No. 28789. [Class 40 (iv).] Cones for loud-speakers are formed from paper pulp on a reticulated conical sheet-metal mould 1. The mould has a cylindrical apex 3, rings 7 which form protuberances or water marks on the cone. and an arcuate channel 8. Radial ribs 10 may be formed near the apex of the mould to produce reinforcing ribs on the cone. The rings 7 may alternatively be placed on the outer surface of the mould and the pulp deposited outside.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2878932A GB391696A (en) | 1932-10-14 | 1932-10-14 | Improved method of and means for manufacturing cones for loud speakers and other purposes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2878932A GB391696A (en) | 1932-10-14 | 1932-10-14 | Improved method of and means for manufacturing cones for loud speakers and other purposes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB391696A true GB391696A (en) | 1933-05-04 |
Family
ID=10281191
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2878932A Expired GB391696A (en) | 1932-10-14 | 1932-10-14 | Improved method of and means for manufacturing cones for loud speakers and other purposes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB391696A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2826346A (en) * | 1954-05-03 | 1958-03-11 | Keyes Fibre Co | Serving holder |
-
1932
- 1932-10-14 GB GB2878932A patent/GB391696A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2826346A (en) * | 1954-05-03 | 1958-03-11 | Keyes Fibre Co | Serving holder |
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