GB271409A - Improvements in electromagnetic devices, suitable for use in sound recording and reproducing devices and the like - Google Patents
Improvements in electromagnetic devices, suitable for use in sound recording and reproducing devices and the likeInfo
- Publication number
- GB271409A GB271409A GB366227A GB366227A GB271409A GB 271409 A GB271409 A GB 271409A GB 366227 A GB366227 A GB 366227A GB 366227 A GB366227 A GB 366227A GB 271409 A GB271409 A GB 271409A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- armature
- bar
- pivot
- 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
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
- H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/16—Mounting or connecting stylus to transducer with or without damping means
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
271,409. Western Electric Co., Inc., (Assignees of Harrison, H. C.). May 24, 1926, [Convention date]. Addition to 260,946. Magnetic instruments. - The electromagnetic device of the parent Specification, and constituting a relay, phonographic recorder or reproducer, &c. has its armature held against its pivot support by a spring mounting attached to the armature and extending into engagement with screwed members screwing into the supporting framework of the device, whereby the action of the spring can be adjusted and " creepage " prevented. The armature 15 is attached to a stylus bar 17 of channel section which is held against a V-pivot 20 by a spring 21 partially surrounding the bar and extending into flat recesses cut in the sides of tapped holes in the supporting frame 23, in which they are adjustably held, and their stress adjusted by screw plugs 25 engaging the tapped holes and the spring. The planes containing the end portions ot each half of the spring pass substantially through the pivot. The spring may be secured to the bar 17 by a screw 26 and washer 27. The ends of the armature operate in V-recesses between the pole faces 13, 14, and coils 16 effect, or are influenced by, the movements of the armature.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US66624A US1709571A (en) | 1925-11-03 | 1925-11-03 | Electromechanical translating device |
| US111209A US1628666A (en) | 1926-05-24 | 1926-05-24 | Electromagnetic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB271409A true GB271409A (en) | 1927-10-27 |
Family
ID=26746972
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1732526A Expired GB260946A (en) | 1925-11-03 | 1926-07-10 | Improvements in electromagnetic devices, suitable for use with sound recording and reproducing devices and the like |
| GB366227A Expired GB271409A (en) | 1925-11-03 | 1927-02-09 | Improvements in electromagnetic devices, suitable for use in sound recording and reproducing devices and the like |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1732526A Expired GB260946A (en) | 1925-11-03 | 1926-07-10 | Improvements in electromagnetic devices, suitable for use with sound recording and reproducing devices and the like |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE335046A (en) |
| FR (2) | FR620382A (en) |
| GB (2) | GB260946A (en) |
| NL (1) | NL22500C (en) |
-
0
- NL NL22500D patent/NL22500C/xx active
- BE BE335046D patent/BE335046A/xx unknown
-
1926
- 1926-07-02 FR FR620382D patent/FR620382A/en not_active Expired
- 1926-07-10 GB GB1732526A patent/GB260946A/en not_active Expired
-
1927
- 1927-01-11 FR FR32964D patent/FR32964E/en not_active Expired
- 1927-02-09 GB GB366227A patent/GB271409A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR620382A (en) | 1927-04-21 |
| FR32964E (en) | 1928-06-06 |
| BE335046A (en) | |
| NL22500C (en) | |
| GB260946A (en) | 1927-10-10 |
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