GB1181841A - An Actuating Mechanism for Day-and-Date Indicating Means In or For a Timepiece - Google Patents

An Actuating Mechanism for Day-and-Date Indicating Means In or For a Timepiece

Info

Publication number
GB1181841A
GB1181841A GB08099/67A GB1809967A GB1181841A GB 1181841 A GB1181841 A GB 1181841A GB 08099/67 A GB08099/67 A GB 08099/67A GB 1809967 A GB1809967 A GB 1809967A GB 1181841 A GB1181841 A GB 1181841A
Authority
GB
United Kingdom
Prior art keywords
cam
day
dial
engaging
timepiece
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
GB08099/67A
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.)
Citizen Holdings Co Ltd
Citizen Watch Co Ltd
Original Assignee
Citizen Holdings Co Ltd
Citizen Watch Co Ltd
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 Citizen Holdings Co Ltd, Citizen Watch Co Ltd filed Critical Citizen Holdings Co Ltd
Publication of GB1181841A publication Critical patent/GB1181841A/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
    • G04B19/25353—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement
    • G04B19/25366—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise 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

1,181,841. Calendar timepieces. CITIZEN TOKEI K.K. April 19, 1967 [April 20, 1966], No.18099/67. Heading G3T. Day and date indicating means in a timepiece comprises rotatable day and date dials 28, 21 operated by star wheels 27, 14, respectively, a first cam 26 having a main projection 26b, an auxiliary projection 26d, and a peripheral surface portion 26a for engaging between two adjacent projections of the star wheel 27 to hold it in a set position, and a gear train 17, 18, 19 for transmitting motion from the star wheel 14 to a second cam 20 having a projection 20b for engaging in notches 21a in the dial 21 to drive the latter and a peripheral surface portion 20a for engaging in notches 21b in the dial 21 for holding the latter in set positions. The star wheel 14 is rotated intermittently by a finger 13 carried by a gear wheel 12 rotated once for 24 hours by the timepiece movement. The cam 20 is carried by a bell crank lever 22 on which a spring 23 operates to maintain the cam portion 20a in a notch 21b in a set position of the day dial 21. An eccentric cam 29 bears an arm 22b of the lever 22 to reduce the pressure of the cam portion 20a against the notch 21b, so that less effort is required to drive the dial 21.
GB08099/67A 1966-04-20 1967-04-19 An Actuating Mechanism for Day-and-Date Indicating Means In or For a Timepiece Expired GB1181841A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3678566 1966-04-20

Publications (1)

Publication Number Publication Date
GB1181841A true GB1181841A (en) 1970-02-18

Family

ID=12479416

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08099/67A Expired GB1181841A (en) 1966-04-20 1967-04-19 An Actuating Mechanism for Day-and-Date Indicating Means In or For a Timepiece

Country Status (4)

Country Link
US (1) US3438196A (en)
CH (2) CH487446A (en)
DE (1) DE1673628B2 (en)
GB (1) GB1181841A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3653200A (en) * 1969-04-10 1972-04-04 Seiko Instr & Electronics Calendar watch with separate seconds, minutes, and hours dials
DE7010018U (en) * 1970-03-18 1970-11-26 Junghans Gmbh Geb CLOCK WITH DATE AND DAY OF THE WEEK.
US3695029A (en) * 1970-06-01 1972-10-03 Gruen Ind Inc Calendar day and date watch
CH1240170A4 (en) * 1970-08-19 1972-12-15
DE7305548U (en) * 1972-02-29 1973-05-10 Agon Uhrenfabrik Triebold R Ag Digital clock
JPS5336343B2 (en) * 1972-08-03 1978-10-02
CH608324B (en) * 1976-05-03 Tavannes Ebauches Sa CALENDAR WATCH MOVEMENT INCLUDING A DATE INDICATOR BODY.
ATE460690T1 (en) 2007-01-30 2010-03-15 Longines Montres Comp D CLOCK COMPRISING A DRIVING MECHANISM OF A DEVICE FOR DISPLAYING A QUANTITY RELATED TO TIME
EP3667435B1 (en) 2018-12-10 2022-06-01 Montres Breguet S.A. System for adjusting the position of a first toothed moving part relative to a support on which the first toothed moving part is pivotably mounted, and timepiece comprising such a system

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US563268A (en) * 1893-03-06 1896-07-07 Perpetual calendar for watches or clocks
CH16964A (en) * 1898-06-09 1899-03-31 Carl Streiter Device on clocks to automatically display the days and months
FR57935E (en) * 1947-09-16 1953-09-18 Calendar watch
CH288312A (en) * 1950-02-11 1953-01-15 Ag Brac Calendar devices for clocks, in particular for pocket watches and wristwatches.
US2591819A (en) * 1950-02-16 1952-04-08 Rolex Montres Calendar timepiece
US2671307A (en) * 1950-08-15 1954-03-09 Imhof Arthur Calendar indicator mechanism
AT178334B (en) * 1952-06-04 1954-04-26 Kurt Wagner Toothed gear with a large gear ratio for watches
DE1209511B (en) * 1962-10-31 1966-01-20 Ebauches Sa Clock with quick-moving date display ring
CH425641A (en) * 1964-05-11 1967-06-15 Ebauches Bettlach Sa Calendar watch
FR1482957A (en) * 1966-04-13 1967-06-02 Cie Ind De Metrologie Trophy Sophisticated date mechanism

Also Published As

Publication number Publication date
CH487446A (en) 1969-11-28
DE1673628A1 (en) 1972-04-27
DE1673628B2 (en) 1972-04-27
US3438196A (en) 1969-04-15
CH566867A4 (en) 1969-11-28

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