GB399165A - An improved method of producing seamless loud speaker diaphragms - Google Patents
An improved method of producing seamless loud speaker diaphragmsInfo
- Publication number
- GB399165A GB399165A GB794932A GB794932A GB399165A GB 399165 A GB399165 A GB 399165A GB 794932 A GB794932 A GB 794932A GB 794932 A GB794932 A GB 794932A GB 399165 A GB399165 A GB 399165A
- Authority
- GB
- United Kingdom
- Prior art keywords
- former
- diaphragm
- pressed
- pulp
- dies
- 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
399,165. Diaphragms. BRIDGER, R. 0., 334, Goswell Road, London. March 17, 1932, Nos. 7949 and 15225. [Class 40 (iv).] Seamless diaphrams for loud-speakers are made by depositing pulp or a gauge or other perforated or porous former, the deposited pulp being dried by pressing between hot dies or by baking in an oven whil( still on the former. The diaphragm may be pressed and. further treated, if desired, after it has been removed from the former. The former with the applied pulp may be pressed between gas-heated dies j<3>, k, the lower of which may be lined with felt &c. l. The former may be corrugated at its periphery in which case the upper die j<3> is similarly corrugated, but the lower die is left uncorrugated. The diaphragm, when made, may be damped, inverted and re-pressed so that it is reversed. The diaphragm may be provided with integral coil-supports &c. by modifications of the former and pressing dies.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB794932A GB399165A (en) | 1932-03-17 | 1932-03-17 | An improved method of producing seamless loud speaker diaphragms |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB794932A GB399165A (en) | 1932-03-17 | 1932-03-17 | An improved method of producing seamless loud speaker diaphragms |
Publications (1)
Publication Number | Publication Date |
---|---|
GB399165A true GB399165A (en) | 1933-09-18 |
Family
ID=9842862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB794932A Expired GB399165A (en) | 1932-03-17 | 1932-03-17 | An improved method of producing seamless loud speaker diaphragms |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB399165A (en) |
-
1932
- 1932-03-17 GB GB794932A patent/GB399165A/en not_active Expired
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