GB167060A - Improvements in and relating to the synchronisation of clocks - Google Patents
Improvements in and relating to the synchronisation of clocksInfo
- Publication number
- GB167060A GB167060A GB1739820A GB1739820A GB167060A GB 167060 A GB167060 A GB 167060A GB 1739820 A GB1739820 A GB 1739820A GB 1739820 A GB1739820 A GB 1739820A GB 167060 A GB167060 A GB 167060A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pendulum
- spring
- tension
- leaf spring
- rack
- 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
- G04C11/00—Synchronisation of independently-driven clocks
- G04C11/007—Synchronisation of independently-driven clocks by positioning of the index or by regulating the length of the pendulum in dependance on the time difference with a standard
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
Abstract
167,060. Hubbard, W. S., Parsons, I. H., and Ball, A. E. J. June 26, 1920. Synchronizing.-Clock pendulums are contrclled and synchronized by means of the usual periodic electric impulses being arranged to .adjust automatically the tension of a spring &c. or the effective length of the pendulum. Fig. 1 shows an arrangement in which the pendulum B which has been given a losing rate has pivoted thereto a flat leaf spring A while a rack C forms parts of the armature of an electromagnet D operated periodically. Normally the rack C engages with the leaf spring A after the latter has passed over half its length, and the resulting tension gives the pendulum an acceleration to compensate for the losing rate. If however the pendulum is slow, the movement of the armature causes the leaf spring to engage the rack at an earlier point of the swing of the pendulum and consequently increased tension is given to the leaf spring A, which tension further accelerates the pendulum. If desired, the spring A may be pivoted to a fixed part of the clock and .an abutment of the pendulum may contact with it at or towards the end of its swing. The leaf spring has attached thereto a lever which coacts with the rack in such a manner that the tension of the spring varies according to whether the pendulum is fast or slow. Fig. 3 shows an arrangement in which the leaf spring A is caused to act on the pendulum by means of the lever B<3> pivoted at B<4>, the position of the lever B<@> being adjusted by means of a rod B<9>, cam B<7> and wheel B<6> in conjunction with the armature C. The gaining rate imparted by the spring A with a medium deflection is compensated by a manual lowering of the pendulum bob. According as the pendulum is slow or fast, the pendulum will be swinging to the left or right respectively at the moment of the periodic impulse, and consequently the wheel B<6> will be given an anticlockwise or clockwise movement which adjusts the lever B<3> and so vary the tension of the spring A. In another arrangement, the movement of the wheel B<6> adjusts a weight arranged on the pendulum to vary its effective length, the spring being dispensed with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1739820A GB167060A (en) | 1920-06-26 | 1920-06-26 | Improvements in and relating to the synchronisation of clocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1739820A GB167060A (en) | 1920-06-26 | 1920-06-26 | Improvements in and relating to the synchronisation of clocks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB167060A true GB167060A (en) | 1921-08-04 |
Family
ID=10094484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1739820A Expired GB167060A (en) | 1920-06-26 | 1920-06-26 | Improvements in and relating to the synchronisation of clocks |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB167060A (en) |
-
1920
- 1920-06-26 GB GB1739820A patent/GB167060A/en not_active Expired
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