GB615139A - Improvements in the application of pendulums to clocks - Google Patents
Improvements in the application of pendulums to clocksInfo
- Publication number
- GB615139A GB615139A GB2245646A GB2245646A GB615139A GB 615139 A GB615139 A GB 615139A GB 2245646 A GB2245646 A GB 2245646A GB 2245646 A GB2245646 A GB 2245646A GB 615139 A GB615139 A GB 615139A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bob
- pendulum
- control ring
- annular control
- restrict
- 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
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B17/00—Mechanisms for stabilising frequency
- G04B17/30—Rotating governors, e.g. centrifugal governors, fan governors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
Abstract
615,139. Clocks. BOXWELL, C. F. N. July 29, 1946, No. 22456. [Class 139] A clock regulated or controlled by a conical pendulum in which the pendulum bob is restricted to a predetermined circular path by stabilizing its circumferential velocity by frictional interaction between the bob and an annular control ring placed in the horizontal plane of movement of the centre of the bob. As shown in Fig. 1, the pendulum bob P is formed with an annular groove in which are provided soft brush hairs, not shown, which frictionally engage the surface of the annular control ring C and cause dissipation of any surplus energy to restrict the bob to its predetermined path. The foot of the pendulum engages a rotor bar R driven by wheelwork W which drives the hands over an inclined dial D. The pendulum bob may have a permanent magnet core M, Fig. 4, which carries two cylindrical members P, P, of magnetic material provided with opposed pole-pieces which magnetically co-operate with the annular control ring C, Fig. 5 to induce therein friction in the form of eddy currents and so dissipate any surplus energy and restrict the bob to its predetermined path. The pendulum is mounted at the top in such a way as to provide temperature compensation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2245646A GB615139A (en) | 1946-07-29 | 1946-07-29 | Improvements in the application of pendulums to clocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2245646A GB615139A (en) | 1946-07-29 | 1946-07-29 | Improvements in the application of pendulums to clocks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB615139A true GB615139A (en) | 1949-01-03 |
Family
ID=10179645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2245646A Expired GB615139A (en) | 1946-07-29 | 1946-07-29 | Improvements in the application of pendulums to clocks |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB615139A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011051498A1 (en) | 2009-11-02 | 2011-05-05 | Lvmh Swiss Manufactures Sa | Setting member for a wristwatch, and timepiece comprising such a setting member |
| WO2011051497A1 (en) | 2009-11-02 | 2011-05-05 | Lvmh Swiss Manufactures Sa | Regulating member for a wristwatch, and timepiece comprising such a regulating member |
| US20140123756A1 (en) * | 2011-06-21 | 2014-05-08 | Siemens S.A.S. | Pendular accelerometer |
-
1946
- 1946-07-29 GB GB2245646A patent/GB615139A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011051498A1 (en) | 2009-11-02 | 2011-05-05 | Lvmh Swiss Manufactures Sa | Setting member for a wristwatch, and timepiece comprising such a setting member |
| WO2011051497A1 (en) | 2009-11-02 | 2011-05-05 | Lvmh Swiss Manufactures Sa | Regulating member for a wristwatch, and timepiece comprising such a regulating member |
| US8534910B2 (en) | 2009-11-02 | 2013-09-17 | Lvmh Swiss Manufactures Sa | Regulating member for a wristwatch, and timepiece comprising such a regulating member |
| US20140123756A1 (en) * | 2011-06-21 | 2014-05-08 | Siemens S.A.S. | Pendular accelerometer |
| US9404937B2 (en) * | 2011-06-21 | 2016-08-02 | Siemens S.A.S. | Pendular accelerometer for detecting threshold oscillation values |
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