GB862586A - Time-piece balance assembly - Google Patents
Time-piece balance assemblyInfo
- Publication number
- GB862586A GB862586A GB19143/57A GB1914357A GB862586A GB 862586 A GB862586 A GB 862586A GB 19143/57 A GB19143/57 A GB 19143/57A GB 1914357 A GB1914357 A GB 1914357A GB 862586 A GB862586 A GB 862586A
- Authority
- GB
- United Kingdom
- Prior art keywords
- balance
- magnet
- poles
- june
- gaps
- 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
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/04—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance
- G04C3/06—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance
- G04C3/065—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance the balance controlling gear-train by means of static switches, e.g. transistor circuits
- G04C3/066—Constructional details, e.g. disposition of coils
Abstract
862,586. Clocks and watches. FABRIQUES MOVADO: June 18, 1957 [June 22, 1956; June 8, 1957], No. 19143/57. Class 139 [Also in Group XXXV] A timepiece balance assembly is electromagnetically maintained in oscillation and is characterised in that the magnetic part which oscillates with the balance is magnetically screened. In the first example, Fig. 1, the magnet 11 on the balance staff is screened by arcuate extensions 12 of the soft iron armature 10. When the balance is in its mid position the poles of the magnet 11 are aligned with the gaps between the extensions 12. The coil 13 has two windings and is connected in a maintaining circuit having a transistor or a mechanical switch. The balance magnet 21 may be screened by a magnetic casing 23, Fig. 4, having gaps 26 in register with the poles of the armature 20. The coil armature may be a permanent magnet in which case the member carried by the balance staff is of soft iron, the material of one of such parts having no remanence. The member carried by the balance may be cross-shaped, Fig. 2, in which case four gaps are provided in the screen. The windings 14, 15 may each be split into two parts, the second part being located opposite the N-poles of the magnet 11.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH862586X | 1956-06-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB862586A true GB862586A (en) | 1961-03-15 |
Family
ID=4543287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19143/57A Expired GB862586A (en) | 1956-06-22 | 1957-06-18 | Time-piece balance assembly |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB862586A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3435311A (en) * | 1965-02-08 | 1969-03-25 | Suwa Seikosha Kk | Oscillatory electromechanical converter |
-
1957
- 1957-06-18 GB GB19143/57A patent/GB862586A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3435311A (en) * | 1965-02-08 | 1969-03-25 | Suwa Seikosha Kk | Oscillatory electromechanical converter |
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