GB459907A - Improvements in and relating to synchronous motor clocks and time-operated mechanisms - Google Patents
Improvements in and relating to synchronous motor clocks and time-operated mechanismsInfo
- Publication number
- GB459907A GB459907A GB3435135A GB3435135A GB459907A GB 459907 A GB459907 A GB 459907A GB 3435135 A GB3435135 A GB 3435135A GB 3435135 A GB3435135 A GB 3435135A GB 459907 A GB459907 A GB 459907A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- wheel
- driven
- auxiliary
- sun
- 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)
- Electromechanical Clocks (AREA)
Abstract
459,907. Electric clocks. HORSTMANN GEAR CO., Ltd., and HORSTMANN, A., Newbridge Works, Bath, Somerset. Dec. 11, 1935, No. 34351. [Class 139] Timekeeping mechanism comprising in combination a synchronous electric motor 4, auxiliary clockwork mechanism of which the mainspring 6 is wound by motor 4 through a slipping arrangement to prevent overwinding, a time dial or equivalent (shaft 8) coupled to motor 4 and the auxiliary clockwork through a differential gear G, so as to be driven by motor 4 on the auxiliary according to which one is working, and an electromagnetic brake 12 which arrests the auxiliary clockwork except when the current to the motor 4 fails. The centre arbor 8, for driving the time dial (not shown), or other time-operated element, is driven by an epicyclic train G of which the planet carrier 13 is common to two sun wheels 14 and 15. Sun-wheel 14 is driven by the synchronous motor 4 through worm gear 18 and train 19 ... 24, of which wheel 24 is rigid with sun-wheel 14 and also drives a wheel 25 for winding the mainspring 6 of the auxiliary movement. Whilst the motor is running the circuit also energizes a solenoid 5 which pulls an armature lever with a slidable springy brake 12 against the scape wheel 11 to assist the latter. When the motor 4 ceases to act, the other sun-wheel 15 is driven by spring 6 through a train governed by the escapement 9. Spring 6 may also be wound manually by means of an arbor 31.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3435135A GB459907A (en) | 1935-12-11 | 1935-12-11 | Improvements in and relating to synchronous motor clocks and time-operated mechanisms |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3435135A GB459907A (en) | 1935-12-11 | 1935-12-11 | Improvements in and relating to synchronous motor clocks and time-operated mechanisms |
Publications (1)
Publication Number | Publication Date |
---|---|
GB459907A true GB459907A (en) | 1937-01-18 |
Family
ID=10364565
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3435135A Expired GB459907A (en) | 1935-12-11 | 1935-12-11 | Improvements in and relating to synchronous motor clocks and time-operated mechanisms |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB459907A (en) |
-
1935
- 1935-12-11 GB GB3435135A patent/GB459907A/en not_active Expired
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