GB957031A - Clock with date indicator - Google Patents

Clock with date indicator

Info

Publication number
GB957031A
GB957031A GB80163A GB80163A GB957031A GB 957031 A GB957031 A GB 957031A GB 80163 A GB80163 A GB 80163A GB 80163 A GB80163 A GB 80163A GB 957031 A GB957031 A GB 957031A
Authority
GB
United Kingdom
Prior art keywords
disc
wheel
tooth
indexing
numbers
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
GB80163A
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.)
KARL DIEHL DIPL ING
Original Assignee
KARL DIEHL DIPL ING
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 KARL DIEHL DIPL ING filed Critical KARL DIEHL DIPL ING
Publication of GB957031A publication Critical patent/GB957031A/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

Landscapes

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

Abstract

957,031. Ratchet gearing. K. DIEHL. Jan. 8, 1963 [Jan. 13, 1962], No. 801/63. Heading F2Q. [Also in Division G3] A clock is provided with a date indicator wherein a disc 3 bearing the date numbers 1 to 31 is indexed forwardly each day, the indexing being performed through a change gear 19, 20 in the time train and of which the gear-wheel 19 is driven from a pinion 21 on the minute shaft 14, the wheel 19 carrying a planet wheel 28 which engages a fixed sun wheel 26 coaxial with the change gear 19, 20, the tooth count of the minute pinion 21, the wheel 19, the planet wheel 28, and the sun wheel 26 being so related that an indexing pin 29 carried by the planet wheel occupies, once every twentyfour hours, a position where it co-operates with means for indexing the date disc. The indexing pin 29 co-operates with one arm 32 of a lever having a second arm 33 to which is secured one end of a spring wire pawl member 35, the other end of which is threaded through a slot 34 of the lever arm 33 and formed into a part 36 which engages ratchet teeth 6 on the disc 3 to index it past a spring detent 8, 9. The disc is adjusted manually through a third arm 40 of the lever to allow for the different number of days in the months. In a modification which enables the numbers to be increased in size without increasing the disc diameter, these numbers are divided between two coaxial ratchet discs 41, 42, Figs. 6 and 7, of which one disc 41 has a window 43 co-operating with a fixed window 2, Fig. 1, the numbers on the other disc showing through both windows whilst the first disc is held stationary. Fifteen normal teeth 44 on disc 41 are of greater diameter than fifteen normal teeth 45 on disc 42, whilst a remaining sixteenth depressed tooth 46 on disc 41 allows a spring wire pawl to miss this tooth and index only the second disc 42 until a lower notch 48 of a sixteenth remaining tooth on disc 42 allows the pawl to engage the depressed tooth 46 and commence indexing the first disc.
GB80163A 1962-01-13 1963-01-08 Clock with date indicator Expired GB957031A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED37917A DE1195236B (en) 1962-01-13 1962-01-13 Clock with date display

Publications (1)

Publication Number Publication Date
GB957031A true GB957031A (en) 1964-05-06

Family

ID=7043844

Family Applications (1)

Application Number Title Priority Date Filing Date
GB80163A Expired GB957031A (en) 1962-01-13 1963-01-08 Clock with date indicator

Country Status (2)

Country Link
DE (1) DE1195236B (en)
GB (1) GB957031A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3373558A (en) * 1965-08-30 1968-03-19 Makiri Uria Calendar clock or watch
US3518825A (en) * 1967-05-03 1970-07-07 Walter Nissen Indicating device
EP1536300A1 (en) * 2003-11-26 2005-06-01 ETA SA Manufacture Horlogère Suisse Calendar mechanism for a watch comprising two superposed date annuli
EP1536299A1 (en) * 2003-11-26 2005-06-01 ETA SA Manufacture Horlogère Suisse Calendar mechanism for a watch comprising two superposed date annuli
WO2006106787A1 (en) * 2005-03-30 2006-10-12 Citizen Holdings Co., Ltd. Display device and calendar device of timepiece

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE631335C (en) * 1935-11-29 1936-06-25 Agne Knoes Herbert Germundson Mechanical calendar
CH288312A (en) * 1950-02-11 1953-01-15 Ag Brac Calendar devices for clocks, in particular for pocket watches and wristwatches.
CH278048A (en) * 1950-02-11 1951-09-30 Ag Brac Calendar devices for clocks, in particular for pocket watches or wristwatches.
CH328143A (en) * 1956-01-25 1958-02-28 Zenith Montres Semi-instantaneous release date timepiece
CH340780A (en) * 1958-08-30 1959-08-31 Ed Kummer Ag Uhrenfabrik Calendar timepiece
CH346164A (en) * 1959-08-05 1960-04-30 Erard Raoul H Instantaneous drive mechanism for a date crown for a timepiece

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3373558A (en) * 1965-08-30 1968-03-19 Makiri Uria Calendar clock or watch
US3518825A (en) * 1967-05-03 1970-07-07 Walter Nissen Indicating device
US6925032B2 (en) 2003-11-26 2005-08-02 Eta Sa Manufacture Horlogère Suisse Timepiece with a date mechanism comprising two superposed date rings
EP1536299A1 (en) * 2003-11-26 2005-06-01 ETA SA Manufacture Horlogère Suisse Calendar mechanism for a watch comprising two superposed date annuli
JP2005156563A (en) * 2003-11-26 2005-06-16 Eta Sa Manufacture Horlogere Suisse Clock having date mechanism equipped with two overlapped date rings
JP2005156562A (en) * 2003-11-26 2005-06-16 Eta Sa Manufacture Horlogere Suisse Clock having date mechanism equipped with two overlapped date rings
EP1536300A1 (en) * 2003-11-26 2005-06-01 ETA SA Manufacture Horlogère Suisse Calendar mechanism for a watch comprising two superposed date annuli
US6934221B2 (en) 2003-11-26 2005-08-23 Eta Sa Manufacture Horlogère Suisse Timepiece with a date mechanism comprising two superposed date rings
JP4523835B2 (en) * 2003-11-26 2010-08-11 ウーテーアー・エス・アー・マニファクチュール・オロロジェール・スイス Watch having a date mechanism with two date rings superimposed
JP4537183B2 (en) * 2003-11-26 2010-09-01 ウーテーアー・エス・アー・マニファクチュール・オロロジェール・スイス Watch having a date mechanism with two date rings superimposed
WO2006106787A1 (en) * 2005-03-30 2006-10-12 Citizen Holdings Co., Ltd. Display device and calendar device of timepiece
CN101151583B (en) * 2005-03-30 2010-05-19 西铁城控股株式会社 Display device and calendar device of timepiece
US7738324B2 (en) 2005-03-30 2010-06-15 Citizen Holdings Co., Ltd. Display device and timepiece calendar device

Also Published As

Publication number Publication date
DE1195236B (en) 1965-06-16

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