GB430109A - Improvements in and relating to date indicators - Google Patents
Improvements in and relating to date indicatorsInfo
- Publication number
- GB430109A GB430109A GB622534A GB622534A GB430109A GB 430109 A GB430109 A GB 430109A GB 622534 A GB622534 A GB 622534A GB 622534 A GB622534 A GB 622534A GB 430109 A GB430109 A GB 430109A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disc
- lever
- month
- slider
- days
- 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
- G04B19/00—Indicating the time by visual means
- G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
- G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
- G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
- G04B19/253—Driving or releasing mechanisms
- G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
- G04B19/25373—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by an energy source which is released at determined moments by the clockwork movement
- G04B19/2538—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by an energy source which is released at determined moments by the clockwork movement automatically corrected at the end of months having less than 31 days
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
Abstract
430,109. Dateindicators. CHARLES, A., 261, Norbury Avenue, Norbury, SMITH, E. W., and SMITH METERS, Ltd., 186, Kennington Park Road, both in London. Feb. 26, 1934, Nos. 6225/34 and 2402/35. [Class 106 (iv)] A date-indicator comprising datenumber and month-name bearing members is driven by a synchronous electric motor. The indicator may be combined with a clock driven by the same motor, in which case a cam 14, Fig. 4, rotates once in 24 hours and actuates a lever 20 carrying a pawl 26 which engages teeth on the date-number disc 5, Fig. 2. This disc is thus stepped anticlockwise and tensions a spiral spring, the disc being detained by a detent 43. On the back of the disc are four pins arranged to co-operate with a slider 32. The slider is positioned in a slot in a lever 49 to a position corresponding with the number of days in the month. In the first position, the slider is engaged by the first pin after 28 days, in the second position by the second pin after 29 days, and so on. When this engagement occurs, the lever 49 is rocked and the detent 43 released, whereupon the spiral spring returns the number disc 5 to its initial position. During the rocking of the lever 49, a pawl 38 pivoted at 40 to the lever advances the month-name sector 6. A detent 60, Fig. 3, is released by the sector 6 at the end of December and the sector then returns to its initial (January) position by gravity. A day-name disc 7 is actuated from the date-member disc by a ratchet mechanism. The position of the slider 32 is adjusted to correspond to the number of days in the month by an arm 73 actuated by a lever 80 having an end 81 engaged by a cam on the back of the month-name sector 6. A plunger 84 is carried by the number disc 5 and engages a lantern wheel 87 having a cam 88 which actuates a pawl 93 driving a ratchet wheel 95. This ratchet wheel rotates once in four years and in February of leap year a pin 98 engages the lever 80 to position the slider 32 for a 29- day month.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB622534A GB430109A (en) | 1934-02-26 | 1934-02-26 | Improvements in and relating to date indicators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB622534A GB430109A (en) | 1934-02-26 | 1934-02-26 | Improvements in and relating to date indicators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB430109A true GB430109A (en) | 1935-06-13 |
Family
ID=9810675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB622534A Expired GB430109A (en) | 1934-02-26 | 1934-02-26 | Improvements in and relating to date indicators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB430109A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2537886A (en) * | 1945-01-10 | 1951-01-09 | Frank Louis | Calendar chronometer |
| US2934886A (en) * | 1955-04-07 | 1960-05-03 | Kaufman Samuel Jack | Time-piece incorporating an instantaneously-operating date indicator |
| US2979884A (en) * | 1958-07-14 | 1961-04-18 | Gordon Maurice | Menstrual cycle indicating mechanism |
| US3082947A (en) * | 1960-06-27 | 1963-03-26 | Livingston Robert | Catamenial indicators |
| CH653842GA3 (en) * | 1983-11-14 | 1986-01-31 | Indicator device moving back the date in a calendar mechanism for a watch | |
| EP3040787A1 (en) * | 2014-12-29 | 2016-07-06 | Montres Breguet S.A. | Timepiece calendar mechanism |
-
1934
- 1934-02-26 GB GB622534A patent/GB430109A/en not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2537886A (en) * | 1945-01-10 | 1951-01-09 | Frank Louis | Calendar chronometer |
| US2934886A (en) * | 1955-04-07 | 1960-05-03 | Kaufman Samuel Jack | Time-piece incorporating an instantaneously-operating date indicator |
| US2979884A (en) * | 1958-07-14 | 1961-04-18 | Gordon Maurice | Menstrual cycle indicating mechanism |
| US3082947A (en) * | 1960-06-27 | 1963-03-26 | Livingston Robert | Catamenial indicators |
| CH653842GA3 (en) * | 1983-11-14 | 1986-01-31 | Indicator device moving back the date in a calendar mechanism for a watch | |
| EP3040787A1 (en) * | 2014-12-29 | 2016-07-06 | Montres Breguet S.A. | Timepiece calendar mechanism |
| CN105739284A (en) * | 2014-12-29 | 2016-07-06 | 蒙特雷布勒盖股份有限公司 | Timepiece calendar mechanism |
| JP2016126008A (en) * | 2014-12-29 | 2016-07-11 | モントレー ブレゲ・エス アー | Timepiece calendar mechanism |
| US9454133B2 (en) | 2014-12-29 | 2016-09-27 | Montres Breguet S.A. | Timepiece calendar mechanism |
| CN105739284B (en) * | 2014-12-29 | 2018-05-01 | 蒙特雷布勒盖股份有限公司 | Timepiece calendar date mechanism |
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