US3608305A - Coordinated combined releasable day and date jumper mechanism for calendar timepieces - Google Patents

Coordinated combined releasable day and date jumper mechanism for calendar timepieces Download PDF

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Publication number
US3608305A
US3608305A US24065A US3608305DA US3608305A US 3608305 A US3608305 A US 3608305A US 24065 A US24065 A US 24065A US 3608305D A US3608305D A US 3608305DA US 3608305 A US3608305 A US 3608305A
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US
United States
Prior art keywords
jumper
day
teeth
star wheel
date
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 - Lifetime
Application number
US24065A
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English (en)
Inventor
Georges Bullat
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.)
FABRIQUE D'HORLOGERIE DE FONTAINEMELON SA
FONTAINEMELON HORLOGERIE
Original Assignee
FONTAINEMELON HORLOGERIE
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 FONTAINEMELON HORLOGERIE filed Critical FONTAINEMELON HORLOGERIE
Application granted granted Critical
Publication of US3608305A publication Critical patent/US3608305A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • a calendar timepiece has a toothed day ring and a star wheel carrying means for indicating days of the week, and comprises a first jumper lever urged 1nto engagement with the teeth of the date ring by a umper spring and a pivotally mounted second jumper.
  • the second jumper has an elastically deformable first arm terminating in a jumper beak engaging in the teeth of the star wheel and a second arm kinematically solid with the first umper lever.
  • the invention relates to jumper mechanisms for calendar timepieces comprising a date ring and a star wheel bearing an indicator for the days of the week.
  • the invention accordingly provides a jumper mechanism for a calendar timepiece comprising a toothed date ring and a star wheel bearing means for indicating the days of the week, a first jumper consisting of a lever engaging in the teeth of the date ring by means of a jumper spring, and a pivotally mounted second pumper having two arms, an elastically deformable first arm terminating in a jumper beak engaging in the teeth of said star wheel, and a second arm kinematically solid with said first jumper.
  • the jumper for the days wheel is separated from the days wheel by the date jumper and the days wheel is thus not subject to a braking effect by its jumper.
  • the days wheel jumperdoes not require to be adjusted and the force of its sprung arm can be much higher and consequently more resistant than that of the traditional jumper.
  • FIG. 1 is a plan view.
  • FIG. 2 is a section along line II-II of FIG. 1.
  • the wristwatch shown schematically in the drawings comprises a date ring 1 provided with interior teeth adapted to be advanced intermittently by a device 2 of known design and which is not described in detail herein.
  • This advancing device 2 simultaneously drives a pinion 3 itself driving a star wheel 4 bearing a disc 5 on which the days of the week are indicated.
  • the date ring 1 is moved into position by a jumper 6 consisting of a small lever provided with a hole about which it pivots on a shoulder 7 of the bottom plate 8 of a watch movement.
  • the tension of spring 9 located in a hollow 10 of the bottom plate maintains the jumper 6 in the teeth of date ring 1.
  • the days wheel 4 is moved into position by a jumper 11 comprising two arms 11a and 11b, the arm 11a being sprmgly and ending by a jumper beak 11c engaging in the teeth of star wheel 4.
  • This jumper is pivoted in bridge 12, and is provided with a cylindrical stud 11d engaged in a hole bored in this bridge.
  • the rigid arm 11b has a slot 13 at 1ts extremity, in which slot a pin 14 integral with the umper 6 is engaged.
  • the jumper 6 When changing the date, the jumper 6 is raised by the rotation of the date ring 1 and by this movement works the jumper 11 which is dislodged from wheel 4.
  • this mechanism has the advantage of being assembled without using any screws.
  • Jumper mechanism for a calendar timepiece comprising a toothed date ring and a star wheel bearing means for indicating the days of the week, a first jumper conslsting of a lever engaging in the teeth of the date ring by means of a jumper spring, and a pivotally mounted second jumper having two arms, an elastically deformable first arm terminating in a jumper beak engaging in the teeth of said star wheel, and a second arm kinematically solid with said first jumper.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)
US24065A 1969-04-28 1970-03-31 Coordinated combined releasable day and date jumper mechanism for calendar timepieces Expired - Lifetime US3608305A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH639869A CH538720A (fr) 1969-04-28 1969-04-28 Pièce d'horlogerie à calendrier

Publications (1)

Publication Number Publication Date
US3608305A true US3608305A (en) 1971-09-28

Family

ID=4308940

Family Applications (1)

Application Number Title Priority Date Filing Date
US24065A Expired - Lifetime US3608305A (en) 1969-04-28 1970-03-31 Coordinated combined releasable day and date jumper mechanism for calendar timepieces

Country Status (4)

Country Link
US (1) US3608305A (fi)
CH (2) CH639869A4 (fi)
DE (1) DE2014991B2 (fi)
FR (1) FR2038422A1 (fi)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688490A (en) * 1970-12-28 1972-09-05 Suwa Seikosha Kk Jumper for a calendar watch mechanism
US3738097A (en) * 1971-07-12 1973-06-12 Omega Brandt & Freres Sa Louis Mechanism for driving and correcting a data disc in a day-date timepiece
US3771308A (en) * 1972-02-16 1973-11-13 Roamer Watch Co Sa Day-date timepiece advancing and correcting device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH685585B5 (fr) * 1994-01-21 1996-02-29 Patek Philippe Sa Mecanisme de quantieme.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688490A (en) * 1970-12-28 1972-09-05 Suwa Seikosha Kk Jumper for a calendar watch mechanism
US3738097A (en) * 1971-07-12 1973-06-12 Omega Brandt & Freres Sa Louis Mechanism for driving and correcting a data disc in a day-date timepiece
US3771308A (en) * 1972-02-16 1973-11-13 Roamer Watch Co Sa Day-date timepiece advancing and correcting device

Also Published As

Publication number Publication date
FR2038422A1 (fi) 1971-01-08
CH639869A4 (fi) 1973-03-15
CH538720A (fr) 1973-03-15
DE2014991A1 (fi) 1971-02-11
DE2014991B2 (de) 1973-02-08

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