GB484219A - Improvements in or relating to clocks or like isochronous devices - Google Patents
Improvements in or relating to clocks or like isochronous devicesInfo
- Publication number
- GB484219A GB484219A GB3043236A GB3043236A GB484219A GB 484219 A GB484219 A GB 484219A GB 3043236 A GB3043236 A GB 3043236A GB 3043236 A GB3043236 A GB 3043236A GB 484219 A GB484219 A GB 484219A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gears
- motor
- load
- pawl
- clock
- 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)
- Transmission Devices (AREA)
Abstract
484,219. Clocks. FERRANTI, Ltd., and BARNES, H. W. Nov. 9, 1936, No. 30432. [Class 139] A clock or like isochronous device comprises a synchronous electric motor 1 and a spring- driven motor 2 which operates continuously and drives the clock or like device when the electric motor fails. The synchronous motor 1 winds up the spring motor 2 through gears 23, 22, 21, and drives the ratchet wheel 10 through gears 4 to 9 and pawl 3. The spring motor drives the pawl 20 similarly through gears 17, 18, 19 at a slightly slower speed than pawl 3 so that ratchet 16, which with 10, is fixed to the shaft 11, is over-ridden by pawl 20, unless the synchronous motor fails. The drive to the clock is taken through gears 12, 13, 14, 15. The spring motor is controlled by an escapement (not shown) through gears 24, and drives an ancillary load through gears 26. This load may take the form of an air fan brake 25, as shown or be derived from the friction of a gear train. The object of this load is to make the load on the spring motor when running freely, comparable with the load when it is also driving the clock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3043236A GB484219A (en) | 1936-11-09 | 1936-11-09 | Improvements in or relating to clocks or like isochronous devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3043236A GB484219A (en) | 1936-11-09 | 1936-11-09 | Improvements in or relating to clocks or like isochronous devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB484219A true GB484219A (en) | 1938-05-03 |
Family
ID=10307587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3043236A Expired GB484219A (en) | 1936-11-09 | 1936-11-09 | Improvements in or relating to clocks or like isochronous devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB484219A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3157984A (en) * | 1961-08-11 | 1964-11-24 | Sonceboz Sa | Timepiece movement for electric meters |
| DE1239632B (en) * | 1963-08-02 | 1967-04-27 | Siemens Ag | Synchronous clock with power reserve |
| DE1257937B (en) * | 1961-08-11 | 1968-01-04 | Sonceboz Sa | Time switch with synchronous motor and power reserve mechanism |
-
1936
- 1936-11-09 GB GB3043236A patent/GB484219A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3157984A (en) * | 1961-08-11 | 1964-11-24 | Sonceboz Sa | Timepiece movement for electric meters |
| DE1257937B (en) * | 1961-08-11 | 1968-01-04 | Sonceboz Sa | Time switch with synchronous motor and power reserve mechanism |
| DE1239632B (en) * | 1963-08-02 | 1967-04-27 | Siemens Ag | Synchronous clock with power reserve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB484219A (en) | Improvements in or relating to clocks or like isochronous devices | |
| GB450953A (en) | Variable speed gear more particularly for motor vehicles | |
| GB446932A (en) | Improvements in or relating to electrically driven clocks or like isochronous devices | |
| GB223388A (en) | Improvements in driving and revolving means for fans and the like | |
| US1978973A (en) | Electric clock | |
| GB484021A (en) | Improvements in power transmission mechanism | |
| GB472983A (en) | Improvements in or relating to electric clock movements | |
| GB343252A (en) | Electric clock with synchronous motor and auxiliary movement | |
| GB459907A (en) | Improvements in and relating to synchronous motor clocks and time-operated mechanisms | |
| GB450224A (en) | Electric lamp, more particularly pocket lamp, with a current generator the drive of which is effected for example by spring power through gearing | |
| GB222773A (en) | Improvements in connection with timepieces used on autocars and other vehicles | |
| GB437593A (en) | Improvements in time keeping mechanism, more especially for clocks | |
| US1961768A (en) | Synchronous motor driven clock | |
| GB384681A (en) | Improvements in and relating to synchronous electric motors | |
| GB1084555A (en) | Improvements in or relating to timing devices | |
| GB229198A (en) | Improvements in driving and revolving means for fans and the like | |
| GB462752A (en) | Improvements in or relating to time-controlled driving mechanism | |
| US2178446A (en) | Electric clock | |
| GB593122A (en) | Improvements in or relating to electric clocks | |
| GB432272A (en) | Improvements in electric clocks and other time keeping apparatus | |
| GB415758A (en) | Improvements in and relating to electric clocks | |
| GB401538A (en) | Improvements in or relating to geared power transmission mechanisms | |
| GB380629A (en) | Small electric motor for clock-winding mechanisms, clock striking mechanisms, driving gears and the like, and method of assembling the armature of same | |
| GB320896A (en) | Improvements in and relating to clockwork mechanism for mechanical models and toys | |
| GB533210A (en) | Improvements in and relating to driving mechanism for blungers |