GB1131205A - Improvements in or relating to calendar watches - Google Patents

Improvements in or relating to calendar watches

Info

Publication number
GB1131205A
GB1131205A GB4965/66A GB496566A GB1131205A GB 1131205 A GB1131205 A GB 1131205A GB 4965/66 A GB4965/66 A GB 4965/66A GB 496566 A GB496566 A GB 496566A GB 1131205 A GB1131205 A GB 1131205A
Authority
GB
United Kingdom
Prior art keywords
date
entrainment member
spring
wheel
ring
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
GB4965/66A
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.)
Ebauchesfabrik ETA AG
Original Assignee
Ebauchesfabrik ETA AG
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 Ebauchesfabrik ETA AG filed Critical Ebauchesfabrik ETA AG
Publication of GB1131205A publication Critical patent/GB1131205A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)
  • Electromechanical Clocks (AREA)

Abstract

1,131,205. Date indicators. ETA A.G. EBAUCHES-FABRIK. Feb.4, 1966 [April 20, 1965], No.4965/66. Heading G3T. A calendar watch possessing an instantaneous date changing motion comprises a date indicating ring 7, capable of being driven by the watch movement and an entrainment member 9 carried by a driving spring 8 and operatively engaging the date indicating ring, the driving spring being mounted on a control wheel 5. The control wheel 5 is continuously driven by an hour wheel 2 via a reduction gear 6. The entrainment member 9 engages a tooth 10 of the date ring 7 so that as the wheel 5 rotates, the spring 8 tensions until the entrainment member reaches a rigid portion 20 of a hub 17 which is an integral part of the wheel 5. The force exerted by the spring on the tooth 10 then causes a detent 12, biased by a spring 15, to move out of engagement with another tooth and thereby allow the entrainment member 9 to advance the date ring 7. Reverse indexing of the date ring 7 during backward setting of the ravels is prevented by a cam surface 21 which pulls the entrainment member 9 out of engagement with the teeth 10.
GB4965/66A 1965-04-20 1966-02-04 Improvements in or relating to calendar watches Expired GB1131205A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH546265A CH446198A (en) 1965-04-20 1965-04-20 Date clock with jerky date change

Publications (1)

Publication Number Publication Date
GB1131205A true GB1131205A (en) 1968-10-23

Family

ID=4294001

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4965/66A Expired GB1131205A (en) 1965-04-20 1966-02-04 Improvements in or relating to calendar watches

Country Status (4)

Country Link
US (1) US3352103A (en)
CH (1) CH446198A (en)
DE (1) DE1523721B2 (en)
GB (1) GB1131205A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4869071U (en) * 1971-12-02 1973-09-01
JPS4895666U (en) * 1972-02-16 1973-11-14
FR2429460A1 (en) * 1978-06-23 1980-01-18 Inst Chasovoi Promyshlennost CALENDAR DEVICE WITH INSTANT ACTION

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH460645A (en) * 1966-02-25 1968-09-30 Ebauches Sa Calendar timepiece
JPS5151647Y2 (en) * 1971-03-04 1976-12-10
CH1026473A4 (en) * 1973-07-13 1976-06-30
CH682285B5 (en) * 1991-12-20 1994-02-28 Ebauchesfabrik Eta Ag Timepiece of the mechanical or electromechanical type comprising a drive wheel driving at least a display device such as a display of dates.
EP1220058A1 (en) 2000-12-22 2002-07-03 Eta SA Fabriques d'Ebauches Instantaneous driving mechanism of a date indicator
DE10136420B4 (en) * 2001-07-26 2005-11-10 NOMOS Glashütte/SA Roland Schwertner KG Watch, especially wristwatch, with date display
CH697018A5 (en) * 2004-12-03 2008-03-14 Christophe Claret Sa animated timepiece.
JP7517008B2 (en) 2020-01-08 2024-07-17 セイコーエプソン株式会社 Movements and Clocks

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH328143A (en) * 1956-01-25 1958-02-28 Zenith Montres Semi-instantaneous release date timepiece

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4869071U (en) * 1971-12-02 1973-09-01
JPS4895666U (en) * 1972-02-16 1973-11-14
FR2429460A1 (en) * 1978-06-23 1980-01-18 Inst Chasovoi Promyshlennost CALENDAR DEVICE WITH INSTANT ACTION

Also Published As

Publication number Publication date
DE1523721A1 (en) 1969-06-26
CH546265A4 (en) 1967-07-14
US3352103A (en) 1967-11-14
DE1523721B2 (en) 1971-12-30
CH446198A (en) 1968-03-15

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