GB495999A - Improvements relating to electro-dynamic sound reproducers - Google Patents
Improvements relating to electro-dynamic sound reproducersInfo
- Publication number
- GB495999A GB495999A GB30768/37A GB3076837A GB495999A GB 495999 A GB495999 A GB 495999A GB 30768/37 A GB30768/37 A GB 30768/37A GB 3076837 A GB3076837 A GB 3076837A GB 495999 A GB495999 A GB 495999A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spider
- secured
- pole
- solder
- chassis
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/041—Centering
- H04R9/043—Inner suspension or damper, e.g. spider
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
495,999. Sound-reproducers. WILLSON, H. C. Nov. 9, 1937, No. 30768. [Class 40 (iv)] In a moving-coil sound-reproducer, a spider g secured to the diaphragm e has a hole or metallic eyelet associated with a pin k mounted in the centre pole-piece b so that when the coil is correctly centred in the gap, the spider g and pin k can be secured together by a readily fusible alloy, such as solder, or by a cement. In a modification, Fig. 4, in which the diaphragm e has an external spider g, the holes or eyelets co-operate with pins k1, k2 mounted on the annular pole-plate c or on the chassis r. In a further construction, Fig. 6, the spider g has strips o engaging between, and soldered to, bifurcated extensions m carried by plates n secured to the pole-plate or to the chassis, and in a modified construction, Fig. 7 (not shown), the strips have downwardly-projecting ends located adjacent and secured by solder or cement to upwardly-projecting parts carried by the plates.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB30768/37A GB495999A (en) | 1937-11-09 | 1937-11-09 | Improvements relating to electro-dynamic sound reproducers |
| US238660A US2235187A (en) | 1937-11-09 | 1938-11-03 | Electrodynamic sound reproducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB30768/37A GB495999A (en) | 1937-11-09 | 1937-11-09 | Improvements relating to electro-dynamic sound reproducers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB495999A true GB495999A (en) | 1938-11-23 |
Family
ID=10312838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30768/37A Expired GB495999A (en) | 1937-11-09 | 1937-11-09 | Improvements relating to electro-dynamic sound reproducers |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2235187A (en) |
| GB (1) | GB495999A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2611830A (en) * | 1950-02-14 | 1952-09-23 | Permoflux Corp | Transducer |
| JPH09163492A (en) * | 1995-12-06 | 1997-06-20 | Pioneer Electron Corp | Speaker |
| JP3861123B2 (en) * | 2002-12-06 | 2006-12-20 | パイオニア株式会社 | Speaker device |
-
1937
- 1937-11-09 GB GB30768/37A patent/GB495999A/en not_active Expired
-
1938
- 1938-11-03 US US238660A patent/US2235187A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2235187A (en) | 1941-03-18 |
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