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GB1438801A - Drive mechanism for two coaxial calendar members in a watch movement - Google Patents

Drive mechanism for two coaxial calendar members in a watch movement

Info

Publication number
GB1438801A
GB1438801A GB4594573A GB4594573A GB1438801A GB 1438801 A GB1438801 A GB 1438801A GB 4594573 A GB4594573 A GB 4594573A GB 4594573 A GB4594573 A GB 4594573A GB 1438801 A GB1438801 A GB 1438801A
Authority
GB
United Kingdom
Prior art keywords
calendar
wheel
cam
hub
lever
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
Application number
GB4594573A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
A Schild SA
Original Assignee
A Schild SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by A Schild SA filed Critical A Schild SA
Publication of GB1438801A publication Critical patent/GB1438801A/en
Expired legal-status Critical Current

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
    • G04B19/25386—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 manually corrected at the end of months having less than 31 days

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

1438801 Calendar timepieces A SCHILD SA 2 Oct 1973 [13 Oct 1972] 45945/73 Heading G3T A calendar watch has concentric day and date indicators 5, 2 driven by respective projections from members 19, 20 mounted on a hub 17 to which is fixed a cam disc 23, the tip 31 of a spring- biased lever 25 riding along the edge of cam 23 so that when it engages a sloping portion 29 of the cam edge it slides therealong to quickly rotate the cam 23 and hub 17 thereby indexing indicators 5, 2, their rotation being stopped by a projection 32 or lever 25 entering a notch 30 in the cam edge thus preventing double-indexing. Member 20 has a further projection 21 and hub 17 is mounted coaxially with a calendar wheel 16 which rotates once per day and which has an arcuate slot 24 entered by catch 21, so that wheel 16 drives hub 17 when catch 21 engages the end of slot 24. Slot 24 also permits manual calendar correction at any time, including immediately after indexing. The spring 13 biasing the lever 25 is an integral part of an assembly plate 10 which is secured to a bottom plate 1 by screws 11 and which carries a first stud 26 constituting the axis of lever 25 and a second stud 15 constituting the axis of a wheel-and-pinion 14 interposed between the calendar wheel 16 and an hour wheel 3 of the watch movement.
GB4594573A 1972-10-13 1973-10-02 Drive mechanism for two coaxial calendar members in a watch movement Expired GB1438801A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1497372A CH575140B5 (en) 1972-10-13 1972-10-13

Publications (1)

Publication Number Publication Date
GB1438801A true GB1438801A (en) 1976-06-09

Family

ID=4405304

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4594573A Expired GB1438801A (en) 1972-10-13 1973-10-02 Drive mechanism for two coaxial calendar members in a watch movement

Country Status (5)

Country Link
US (1) US3818692A (en)
JP (1) JPS533938B2 (en)
CH (2) CH575140B5 (en)
FR (1) FR2203105B1 (en)
GB (1) GB1438801A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH573137B5 (en) * 1973-06-05 1976-02-27 Ebauchesfabrik Eta Ag
CH591720B5 (en) * 1975-03-18 1977-09-30 Ebauches Sa
US4027468A (en) * 1975-10-31 1977-06-07 General Time Corporation Day-date mechanism for travel clock
US4059953A (en) * 1976-06-18 1977-11-29 General Time Corporation Timepiece calendar indexing apparatus
EP2015146B1 (en) * 2007-07-13 2011-03-02 Omega SA Instant display mechanism for a timepiece
EP2180383B1 (en) * 2008-10-24 2012-01-25 ETA SA Manufacture Horlogère Suisse Device to assist in maintaining the position of a date disc for a timepiece
CN101763021B (en) * 2010-01-20 2011-08-17 福建上润精密仪器有限公司 Limiting device for positioning rod of date wheel or week wheel in watch
EP2503407B1 (en) * 2011-03-23 2017-06-28 Montres Breguet SA Timepiece movement comprising an instant actuator controlled by the movement
EP2642354B1 (en) * 2012-03-23 2015-10-21 Omega SA Mechanism for displaying and correcting the state of two different time magnitudes

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH454752A (en) * 1965-07-12 1968-06-28 Valjoux Sa Instant calendar timepiece
JPS4520300Y1 (en) * 1967-04-06 1970-08-14
CH512765A (en) * 1969-09-23 1971-04-15 Record Watch Co S A Drive mechanism for a date and / or day of the week indicator
DE7010018U (en) * 1970-03-18 1970-11-26 Junghans Gmbh Geb CLOCK WITH DATE AND DAY OF THE WEEK.
DE2038552C3 (en) * 1970-08-03 1974-09-19 Gebrueder Junghans Gmbh, 7230 Schramberg Clock with date and weekday display

Also Published As

Publication number Publication date
FR2203105B1 (en) 1976-09-17
JPS533938B2 (en) 1978-02-13
US3818692A (en) 1974-06-25
CH575140B5 (en) 1976-04-30
JPS4974978A (en) 1974-07-19
DE2349759B2 (en) 1975-09-25
DE2349759A1 (en) 1974-04-18
CH1497372A4 (en) 1975-09-30
FR2203105A1 (en) 1974-05-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee