GB441747A - Improvements in or relating to devices comprising an armature arranged between pole-pieces - Google Patents
Improvements in or relating to devices comprising an armature arranged between pole-piecesInfo
- Publication number
- GB441747A GB441747A GB13696/35A GB1369635A GB441747A GB 441747 A GB441747 A GB 441747A GB 13696/35 A GB13696/35 A GB 13696/35A GB 1369635 A GB1369635 A GB 1369635A GB 441747 A GB441747 A GB 441747A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polepieces
- blocks
- armature
- secured
- plane
- 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
- H04R11/00—Transducers of moving-armature or moving-core type
-
- 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
- H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
Abstract
441,747. Sound-reproducing devices. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. May 9, 1935, No. 13696. Convention date, May 17, 1934. [Class 40 (iv)] In an electro-acoustic or other device comprising a vibrating armature arranged between polepieces embedded in non-magnetic material, the polepieces are secured in blocks having one surface accurately in one plane with the front side of the corresponding polepiece and the armature supports are clamped between these plane surfaces of the non- magnetic blocks. As applied to a sound-recording device opposed polepieces 6 are embedded in copper blocks 7 which are then machined so that the surfaces 9 are in the plane of the surfaces 8. The blocks are clamped against the end portions 5 of a torsional armature 2, with distance pieces 10 which determine the gap between the polepieces. The armature 2 is provided with an arm 3 for the cutter and carries the voice coils 12 which are secured by wooden blocks. A permanent magnet 14 is secured to the polepieces by screws.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE441747X | 1934-05-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB441747A true GB441747A (en) | 1936-01-24 |
Family
ID=6518428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13696/35A Expired GB441747A (en) | 1934-05-17 | 1935-05-09 | Improvements in or relating to devices comprising an armature arranged between pole-pieces |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2108275A (en) |
| BE (1) | BE409329A (en) |
| FR (1) | FR789737A (en) |
| GB (1) | GB441747A (en) |
| NL (1) | NL43098C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2454425A (en) * | 1943-12-23 | 1948-11-23 | Shure Bros | Magnetic translating device |
| BE480688A (en) * | 1945-01-26 | |||
| US2444336A (en) * | 1946-01-30 | 1948-06-29 | Lionel B Cornwell | Electrical sound translating device |
-
0
- NL NL43098D patent/NL43098C/xx active
- BE BE409329D patent/BE409329A/xx unknown
-
1935
- 1935-04-17 US US16872A patent/US2108275A/en not_active Expired - Lifetime
- 1935-05-08 FR FR789737D patent/FR789737A/en not_active Expired
- 1935-05-09 GB GB13696/35A patent/GB441747A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2108275A (en) | 1938-02-15 |
| BE409329A (en) | |
| FR789737A (en) | 1935-11-05 |
| NL43098C (en) |
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