GB609562A - Improvements in or relating to synchronous motor electric clocks and the like - Google Patents
Improvements in or relating to synchronous motor electric clocks and the likeInfo
- Publication number
- GB609562A GB609562A GB820446A GB820446A GB609562A GB 609562 A GB609562 A GB 609562A GB 820446 A GB820446 A GB 820446A GB 820446 A GB820446 A GB 820446A GB 609562 A GB609562 A GB 609562A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spindle
- teeth
- gear
- ring
- driven
- 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
- G04C15/00—Clocks driven by synchronous motors
- G04C15/0009—Clocks driven by synchronous motors without power-reserve
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
609,562. Toothed gearing. BROWN, T. A., and PERIVALE CLOCK MANUFACTURING CO., Ltd. March 16, 1946, No. 8204. [Class 80 (i)] [Also in Groups XVIII and XXXV] The hands 50, 54 of an electric clock are driven through two or more epicyclic gear trains arranged in cascade on a common spindle 26 by a synchronous electric motor. Each gear train comprises a gear wheel 28, having internal teeth 30, journalled on the spindle 26, a fixed coaxial ring of teeth 32, an eccentric member 34 free to rotate on the spindle, and a twin inner wheel 38 rotatable on the eccentric member 34, and having two sets of teeth 40, 42 meshing simultaneously respectively with the internal gear ring 28 and the fixed ring of teeth 32, the number of teeth of the gear ring differing from those of the fixed ring. The final driven gear wheel is connected to the spindle 26, which forms the minute hand spindle by a slip-spring coupling 46. The usual 12 : 1 gearing 44 is provided between the two hands. In a modification the eccentric 34 is driven from a driven shaft of a synchronous electric motor, parallel to the spindle through toothed gearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB820446A GB609562A (en) | 1946-03-16 | 1946-03-16 | Improvements in or relating to synchronous motor electric clocks and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB820446A GB609562A (en) | 1946-03-16 | 1946-03-16 | Improvements in or relating to synchronous motor electric clocks and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB609562A true GB609562A (en) | 1948-10-04 |
Family
ID=9847856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB820446A Expired GB609562A (en) | 1946-03-16 | 1946-03-16 | Improvements in or relating to synchronous motor electric clocks and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB609562A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2828649A (en) * | 1953-11-13 | 1958-04-01 | Philips Corp | Planetary gear |
-
1946
- 1946-03-16 GB GB820446A patent/GB609562A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2828649A (en) * | 1953-11-13 | 1958-04-01 | Philips Corp | Planetary gear |
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