GB440946A - Improvements in synchronous-motor time-measuring apparatus - Google Patents
Improvements in synchronous-motor time-measuring apparatusInfo
- Publication number
- GB440946A GB440946A GB28256/35A GB2825635A GB440946A GB 440946 A GB440946 A GB 440946A GB 28256/35 A GB28256/35 A GB 28256/35A GB 2825635 A GB2825635 A GB 2825635A GB 440946 A GB440946 A GB 440946A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wheel
- current
- synchronous
- shaft
- auxiliary movement
- 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
- G04C15/0054—Clocks driven by synchronous motors with power-reserve
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Measurement Of Unknown Time Intervals (AREA)
Abstract
440,946. Time-switches. LANDIS & GYR AKT.-GES., 1, Hofstrasse, Zug, Switzerland. Oct. 12, 1935, No. 28256. Convention date, Oct. 19, 1934. [Class 38 (v)] [See also Group XVIII] Synchronous-motor clock mechanism, for driving clock hands or time-switches, with an auxiliary movement in reserve in which a coupling wheel 7 connected to the hands &c. is coupled to the synchronous-motor 1 if current is flowing and to the auxiliary movement 2 if current fails, is characterized in that the means for changing the coupling wheel's connection are connected to the planet wheel of a differential, of which one sun wheel 15 is driven in one direction from the synchronousmotor 1 (by gear 16) and a second sun wheel 17 is driven in the opposite direction from the auxiliary movement 2 (by gear 18) at a slower speed. The lever 10 carrying the shaft 8 of the pinion 7 is on a shaft 11 connected through a friction coupling 12 to the planet wheel shaft 13. If current is flowing, wheel 15 rotates faster than wheel 17 and arm 10 is lifted to enmesh wheels 7 and 4. At current failure wheel 15 stops and wheel 17 lowers arm 10 until wheels 7 and 6 enmesh ; thereafter clutch 12 slips.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH440946X | 1934-10-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB440946A true GB440946A (en) | 1936-01-08 |
Family
ID=4515193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28256/35A Expired GB440946A (en) | 1934-10-19 | 1935-10-12 | Improvements in synchronous-motor time-measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB440946A (en) |
-
1935
- 1935-10-12 GB GB28256/35A patent/GB440946A/en not_active Expired
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