GB305327A - Improvements in electrically driven timepieces - Google Patents
Improvements in electrically driven timepiecesInfo
- Publication number
- GB305327A GB305327A GB3342127A GB3342127A GB305327A GB 305327 A GB305327 A GB 305327A GB 3342127 A GB3342127 A GB 3342127A GB 3342127 A GB3342127 A GB 3342127A GB 305327 A GB305327 A GB 305327A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pivoted
- weighted
- arm
- weight
- bell
- 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
- G04C1/00—Winding mechanical clocks electrically
- G04C1/02—Winding mechanical clocks electrically by electromagnets
- G04C1/022—Winding mechanical clocks electrically by electromagnets with snap-acting armature
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
Abstract
305,327. Bold, H. Dec. 10, 1927. Electric clocks.-In an electric clock in which a weighted driving arm pivoted on the minute wheel arbor, is re-energized electromagnetically, indicator means connected to the weighted arm are provided to show when the electromagnetic force is insufficient to raise the weight. The driving arm 11, weighted at 13, is pivoted at 7 on the minute wheel arbor and carries a pawl 14 driving the ratchet wheel 8 rigid with the arbor 7 and connected by gearing 1 - - 6 with an escapement which is controlled by a pendulum or by a balance. The weight is connected electrically in series by a wire 16 with the magnet windings 17 and contacts, to close the magnet circuit, with a surface 24 on a bell-crank 20, 21 pivoted at 22 and carrying the armature 23. A stop 27 limits the downward movement of the arm 20. When the weighted lever sinks the weight 13 contacts with the surface 24 and the magnet rocks the bell-crank 20, 21 clockwise so that the weighted lever is kicked upwards by the surface 24. A two-armed indicator member 31, 35 pivoted at 32 to the fixed frame of the clock is connected by a pin and slot 33, 34 to the weight 13 so that when the arm 11 is in its lowest position a red dot 37 on the indicator member shows through a hole 36 in the front plate of the clock and through a hole in the dial. In a modification, the bell-crank carrying the armature is pivoted at one end.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3342127A GB305327A (en) | 1927-12-10 | 1927-12-10 | Improvements in electrically driven timepieces |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3342127A GB305327A (en) | 1927-12-10 | 1927-12-10 | Improvements in electrically driven timepieces |
Publications (1)
Publication Number | Publication Date |
---|---|
GB305327A true GB305327A (en) | 1929-02-07 |
Family
ID=10352734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3342127A Expired GB305327A (en) | 1927-12-10 | 1927-12-10 | Improvements in electrically driven timepieces |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB305327A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115249431A (en) * | 2022-01-05 | 2022-10-28 | 武汉城市职业学院 | Convenient teaching aid for clock pendulum timing study of directly perceived show |
-
1927
- 1927-12-10 GB GB3342127A patent/GB305327A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115249431A (en) * | 2022-01-05 | 2022-10-28 | 武汉城市职业学院 | Convenient teaching aid for clock pendulum timing study of directly perceived show |
CN115249431B (en) * | 2022-01-05 | 2023-04-14 | 武汉城市职业学院 | Convenient teaching aid for clock pendulum timing study of directly perceived show |
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