GB594884A - Improvements in or relating to electric clocks - Google Patents
Improvements in or relating to electric clocksInfo
- Publication number
- GB594884A GB594884A GB1632044A GB1632044A GB594884A GB 594884 A GB594884 A GB 594884A GB 1632044 A GB1632044 A GB 1632044A GB 1632044 A GB1632044 A GB 1632044A GB 594884 A GB594884 A GB 594884A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pendulum
- contacts
- electromagnet
- rigid member
- condenser
- 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
- 238000004804 winding Methods 0.000 abstract 2
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/02—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a pendulum
- G04C3/027—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a pendulum using electromagnetic coupling between electric power source and pendulum
- G04C3/0273—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a pendulum using electromagnetic coupling between electric power source and pendulum the pendulum controlling contacts, thereby electromagnetically driving the gear-train or several gear-trains
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
594,884. Electric clocks. DENTON, L. E. Oct. 19, 1943, No. 16320/44. Divided out of 574,169. [Class 139] In a clock in which contacts are closed by the pendulum to discharge a condenser through an electromagnet to provide maintaining impulses for the pendulum, the latter is connected by a flexible element to a rigid member hinged to a fixed support, contacts carried on the rigid member engaging fixed contacts shortly after the pendulum passes through its mid-position so that movement of the rigid member is prevented during the major part of the swing of the pendulum, The pendulum rod e is suspended from the lower end of a hinged rigid member c by a flexible element f. The bar c carries contacts g<1> and g<2> which co-operate respectively with adjustable contact screws h<1> and h<2> secured to the backboard a. The pendulum bob m has an armature l which co-operates with the pole pieces of an electromagnet k adjustable along the arc of swing. When the pendulum m is slightly to the left of its mid-position, Fig. 5, the contacts g<1>, h<1> are closed and the battery p supplies a charging current to the condenser q, said current passing through the electromagnet winding r. The. armature s is drawn .up and on its return stroke rotates the ratchet wheel u which is geared to the clock dial mechanism. On the return stroke of the pendulum m the contacts g<2>, h<2> are closed and so the condenser q discharges through the winding of the electromagnet k which supplies the impulse to the pendulum m. The pole faces n of the electromagnet k are carved in a plane perpendicular to the plane of swing of the pendulum so that the air gap remains constant even if the clock is out of level.
Publications (1)
Publication Number | Publication Date |
---|---|
GB594884A true GB594884A (en) | 1947-11-21 |
Family
ID=1732218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1632044A Expired GB594884A (en) | 1943-10-19 | Improvements in or relating to electric clocks |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB594884A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2796728A (en) * | 1953-07-28 | 1957-06-25 | Knud J Knudsen | Precision chronometer |
US2987635A (en) * | 1956-07-18 | 1961-06-06 | Leonard C Nachtman | Self-starting switchless reciprocating electric motor |
-
1943
- 1943-10-19 GB GB1632044A patent/GB594884A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2796728A (en) * | 1953-07-28 | 1957-06-25 | Knud J Knudsen | Precision chronometer |
US2987635A (en) * | 1956-07-18 | 1961-06-06 | Leonard C Nachtman | Self-starting switchless reciprocating electric motor |
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