GB1087970A - Improvements in calendar timepieces - Google Patents
Improvements in calendar timepiecesInfo
- Publication number
- GB1087970A GB1087970A GB43901/66A GB4390166A GB1087970A GB 1087970 A GB1087970 A GB 1087970A GB 43901/66 A GB43901/66 A GB 43901/66A GB 4390166 A GB4390166 A GB 4390166A GB 1087970 A GB1087970 A GB 1087970A
- Authority
- GB
- United Kingdom
- Prior art keywords
- calendar
- shutter
- cam
- ring
- pinion
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
Abstract
1,087,970. Date indicators. HAMILTON WATCH CO. Sept.30, 1966 [Oct.29, 1965], No.43901/66. Heading G3T. A calendar timepiece comprises a continuously rotated calendar ring 12 having date indicia 20 thereon, a shutter 43 having a window 56 overlying a portion of the calendar ring and a cam 84 which moves the shutter in synchronism with the calendar ring during each-24 hour period. An hour wheel 14 is coupled to an intermediate gear 28 by a calendar drive pinion 26 and an intermediate pinion 36 meshes with a calendar gear 38. A calendar pinion 42 is attached to the gear 38 and meshes with teeth 16 to drive the calendar ring 12. The cam 84 is attached to the staff 30 of the pinion 36 and the gear 28 and the outer surface 82 of the cam rotates the shutter 43 about a pivot 44 so that the window 56 follows the movement of the visible date indicium. Just before midnight, however, the stop portion 78 of the shutter cam surface 80 slips over the sharp edge of the cam surface 82 and a spring 70 engaging a pin 76 urges the shutter upwards so that the window coincides with the next date indicium. In order to set the hands and rotate the dial ring in either direction, a setting stem 68 is pulled outwards so that a pin 90 engaging a groove 88 in the inner portion of the stem rotates a lever 94 about a pivot 96. A pin 100, attached to the lever, presses against the shutter to move the cam surface 80 out of engagement with the cam 84 thereby freeing the shutter mechanism from the watch drive and allowing the calendar ring to be rotated in either direction.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US505658A US3353348A (en) | 1965-10-29 | 1965-10-29 | Electric watch calendar mechanism |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1087970A true GB1087970A (en) | 1967-10-18 |
Family
ID=24011256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB43901/66A Expired GB1087970A (en) | 1965-10-29 | 1966-09-30 | Improvements in calendar timepieces |
Country Status (4)
Country | Link |
---|---|
US (1) | US3353348A (en) |
CH (2) | CH481413A (en) |
DE (1) | DE1523778B2 (en) |
GB (1) | GB1087970A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH460645A (en) * | 1966-02-25 | 1968-09-30 | Ebauches Sa | Calendar timepiece |
US3427798A (en) * | 1966-11-10 | 1969-02-18 | Hamilton Watch Co | Watch calendar setting mechanism |
JP2011089847A (en) * | 2009-10-21 | 2011-05-06 | Seiko Instruments Inc | Calendar mechanism and analog timepiece including the same |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3240006A (en) * | 1962-10-01 | 1966-03-15 | Hamilton Watch Co | Calendar timepiece |
US3258907A (en) * | 1965-01-14 | 1966-07-05 | Hamilton Watch Co | Calendar timepiece |
-
1965
- 1965-10-29 US US505658A patent/US3353348A/en not_active Expired - Lifetime
-
1966
- 1966-09-30 GB GB43901/66A patent/GB1087970A/en not_active Expired
- 1966-10-17 DE DE19661523778 patent/DE1523778B2/en active Pending
- 1966-10-20 CH CH1521566A patent/CH481413A/en not_active IP Right Cessation
- 1966-10-20 CH CH1521566D patent/CH1521566A4/xx unknown
Also Published As
Publication number | Publication date |
---|---|
CH481413A (en) | 1969-07-31 |
DE1523778A1 (en) | 1969-07-03 |
CH1521566A4 (en) | 1969-07-31 |
DE1523778B2 (en) | 1971-08-12 |
US3353348A (en) | 1967-11-21 |
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