GB309555A - Improvements in and relating to sound producing devices - Google Patents
Improvements in and relating to sound producing devicesInfo
- Publication number
- GB309555A GB309555A GB11367/29A GB1136729A GB309555A GB 309555 A GB309555 A GB 309555A GB 11367/29 A GB11367/29 A GB 11367/29A GB 1136729 A GB1136729 A GB 1136729A GB 309555 A GB309555 A GB 309555A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cone
- relating
- attached
- sound producing
- producing devices
- 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
- 208000035187 Ring chromosome 14 syndrome Diseases 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 230000002093 peripheral effect Effects 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
- H04R11/00—Transducers of moving-armature or moving-core type
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/06—Filling-up mechanically
-
- 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
-
- 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
- H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Mining & Mineral Resources (AREA)
- Electromagnetism (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
309,555. British Thomson-Houston Co., Ltd., (Assignees of Potter, W. B.). April 12, 1928, [Convention date]. Draphragms. - A conical paper diaphragm 10 for sound reproduction has flanged rings 15 of " Bristol board " or the like attached to its cuter surface, the flanges 16 oi which lie in planes perpendicular to the axis of the cone. The rings are preferably spaced progressively closer towards the periphery. The flange 13, of the peripheral ring 14, is used to support the cone which is inpulsed by a rod 12 attached to a metal ferrule 11, preferably of aluminium, and fixed to the apex of the cone.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US269519A US1754044A (en) | 1928-04-12 | 1928-04-12 | Sound-producing device |
Publications (1)
Publication Number | Publication Date |
---|---|
GB309555A true GB309555A (en) | 1930-04-03 |
Family
ID=23027615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11367/29A Expired GB309555A (en) | 1928-04-12 | 1929-04-12 | Improvements in and relating to sound producing devices |
Country Status (3)
Country | Link |
---|---|
US (1) | US1754044A (en) |
DE (1) | DE601827C (en) |
GB (1) | GB309555A (en) |
-
1928
- 1928-04-12 US US269519A patent/US1754044A/en not_active Expired - Lifetime
-
1929
- 1929-04-12 GB GB11367/29A patent/GB309555A/en not_active Expired
- 1929-04-13 DE DEA57461D patent/DE601827C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE601827C (en) | 1934-08-25 |
US1754044A (en) | 1930-04-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB369476A (en) | Acoustic diaphragm | |
GB309555A (en) | Improvements in and relating to sound producing devices | |
GB320654A (en) | Improvements in loud speakers for wireless apparatus or the like | |
GB442165A (en) | Improvements in and relating to loudspeakers | |
GB311044A (en) | Improvements in diaphragms for gramophones, telephonic loud speakers and the like | |
GB377839A (en) | Improvements in sound ampliflers | |
CA307007A (en) | Acoustic apparatus with sound diaphragm | |
GB311835A (en) | Improvements relating to sound reproducing apparatus | |
GB272263A (en) | Improvements in or relating to telephonic instruments | |
CA305495A (en) | Method of eliminating the silica from the residual lyes of cellulose mills | |
AU111155B2 (en) | Processes for the production of cellulose from maize-stalk and the like | |
GB297476A (en) | Improvements in or relating to loud-speakers and like sound-reproducing devices | |
CA250784A (en) | Arrangement for the distortion free intensification of sounds and tones for the purpose of acoustic kinematography | |
GB324493A (en) | Improvements in or relating to sound reproducing or transmitting instruments | |
GB300792A (en) | Improvements in or relating to diaphragms for loud speakers | |
CA278540A (en) | Process for the production of high alpha cellulose fibre | |
CA278541A (en) | Process for the production of high alpha cellulose fibre | |
AU113372B2 (en) | Method of and apparatus for the manufacture of asbestos-cement and like fibrous sheet | |
AU113968B2 (en) | Improvements inthe manufacture of sheets andother shapes from fibrous pulp | |
FR878141A (en) | Method for producing sound recordings free from distortion | |
GB253486A (en) | ||
GB309226A (en) | Improvements in or relating to acoustic devices | |
CA299126A (en) | Production of resistant porous sheets | |
CA478378A (en) | Methods of screening fibrous suspensions | |
AU144940A (en) | Method of and apparatus for the manufacture of asbestos-cement and like fibrous sheet |