GB812600A - Improvements in or relating to electromagnetically-operated oscillating armature devices - Google Patents
Improvements in or relating to electromagnetically-operated oscillating armature devicesInfo
- Publication number
- GB812600A GB812600A GB12064/57A GB1206457A GB812600A GB 812600 A GB812600 A GB 812600A GB 12064/57 A GB12064/57 A GB 12064/57A GB 1206457 A GB1206457 A GB 1206457A GB 812600 A GB812600 A GB 812600A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- core
- permanent magnet
- flux
- electromagnetically
- 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
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K1/00—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs
- G10K1/06—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube
- G10K1/062—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube electrically operated
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
812,600. Oscillating motors. TELEFONAKTIEBOLAGET L. M. ERICSSON. April 12, 1957 [April 12, 1956], No. 12064/57. Class 35. [Also in Group XXXVIII] An electromagnetically-operated oscillating armature device for use in bells and telephone receivers comprises a magnetic core 1 formed by a magnetically conductive closed loop 12, 13, 15, 16, 14 having a re-entrant portion 17 ... 19 forming a cavity accommodating a permanent magnet 5 which has one pole directed inwardly towards the bottom 18 of the portion and the other pole directed outwardly towards the centre of an armature 4 pivoted at such centre on a spindle 41; two air gaps 2, 3 exist between the ends of the armature 4 and the core 1 at locations 15, 16 outside the re-entrant portion and the portion 12 of the core carries an energizing winding 21 connectable to an A.C. source whereby in operation the gaps 2, 3 carry both the permanent magnet unidirectional flux and the energizing winding alternating flux as they pass between the core and armature, to cause the armature to oscillate about its pivoting spindle. As shown, Fig. 1, the core 1 is M-shaped and the re-entrant portion sloping arms 17, 19 are so dimensioned or so apertured that they are saturated by the permanent magnet flux. The armature ends have pole studs 42 to prevent sticking. In the bell construction of Fig. 2 a U-shaped clamp 7 holds via a spring 72 the magnet 5 against the bottom 18 and mounts the armature 4 to which is screwed a clapper bar 42.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE812600X | 1956-04-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB812600A true GB812600A (en) | 1959-04-29 |
Family
ID=20345447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12064/57A Expired GB812600A (en) | 1956-04-12 | 1957-04-12 | Improvements in or relating to electromagnetically-operated oscillating armature devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB812600A (en) |
-
1957
- 1957-04-12 GB GB12064/57A patent/GB812600A/en not_active Expired
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