US3779000A - Correction device for day-and-date calendar watches - Google Patents

Correction device for day-and-date calendar watches Download PDF

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Publication number
US3779000A
US3779000A US00294507A US3779000DA US3779000A US 3779000 A US3779000 A US 3779000A US 00294507 A US00294507 A US 00294507A US 3779000D A US3779000D A US 3779000DA US 3779000 A US3779000 A US 3779000A
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United States
Prior art keywords
indicating
beak
driving
movement
organ
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Expired - Lifetime
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US00294507A
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English (en)
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P Schmid
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SSIH Management Services SA
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SSIH Management Services SA
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    • 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
    • G04B19/25—Devices for setting the date indicators manually

Definitions

  • ABSTRACT A correction mechanism for a calendar watch which connects a control organ such as the winding stem of the watch to first and second indicating organs such as day and date indicators.
  • the correction mechanism comprises a driving organ which is one element of a jointed system with four joints.
  • the driving organ has two drive beaks associated, respectively, with the first and second indicating organs.
  • the beaks move together in a non-circular, closed curve in which one beak moves in a clockwise direction while the other beak is moving in a counter-clockwise direction.
  • the present invention relates to a correction device for a day and date calendar watch comprising a control organ which is accessible from the outside of the watch and a control mechanism which may be put into a correction position in order to connect said control organ to an indicating organ which indicates the day and date.
  • correction devices exist which no longer cause appreciable difficulties.
  • the correction devices that have been proposed for use in day and date watches in general have been so conceived as to introduce supplementary elements to devices meant for a simple date watch and, therefore, cumbersome and complex devices, which are difficult to adjust have resulted.
  • correction mechanisms are known which may be controlled by the winding stem when placed the socalled correction position which is an axial position.
  • the purpose of the present invention is to provide a correction device of the kind mentioned above which will be simpler to manufacture and the setting of which will be less complex than in known devices.
  • Certain known driving devices which are used for the daily driving of the date or date-and-day watches comprise movable parts driven by an eccentric or by a rotating finger, such movable parts being, for example, guided by pins in such manner as to describe a complex motion of translation and of rotation on the bottom plate.
  • this part is located between the date crown and the day-star and takes up much space in the annular space extending between these two organs. It was not evident that making use of a plate of this kind was possible; however, making use of the plate presents an advantage with respect to the correction mechanism because of the necessity to array the elements of these mechanisms in the vicinity of the control stem.
  • the correction device is thus characterized in that the control mechanism comprises a driving organ which constitutes an element of a jointed system with four joints.
  • FIG. I is a diagram of a plane jointed system with four joints.
  • FIG. 2 is a top view of an embodiment of the device according to the present invention.
  • FIG. 3 is a top view, on another scale, of the control mechanism of the device shown in FIG. 2.
  • FIG. 4 is a section along the line lV-IV of FIG. 3.
  • FIG. 5 is a section along the line V-V of FIG. 3.
  • a plane jointed system with four joints comprising two fixed points always may be shown diagrammatically as illustrated in FIG. 1.
  • Such a system comprises three movable arms M,,-A, AB and B-M
  • the two joints M and M connect one of the arms to a fixed base while the two joints A and B each connect one of the movable arms M -A or M,,B to the connecting rod AB.
  • Such a system is entirely deterministic and comprises only one degree of freedom. In other words, any displacement departed to one of the arms, for example to arm M, A, causes determined displacements in the other two arms.
  • the arms M,,A and M B can only rotate about the joints M and M whereas the connecting rod AB describes a complex motion which is resolvable into translations and into rotations.
  • the displacement amplitudes may vary.
  • the connecting rod AB is made up of a plate having a certain width, all the points of this plate may be taken into account, for instance such points as E and F, and one may study the paths they will describe when the jointed system will deform.
  • Known computational methods will allow one to determine the paths of any point of the elements of the system such as shown in FIG. I when the determining elements of the system are fixed.
  • the initial condition may be made up of the paths that one wishes to have two points follow in one of the system elements, for instance such points as E and F of the connecting rod AB, and one may determine the position of these points with respect to joints A and B, and one may also determine the determining elements of the system so as to satisfy the initial conditions.
  • the problem now consists of finding the value of the length of the crankhandle M A, of finding the shape and the dimensions of the connecting rod A-B, so that two points of the latter, namely the points E and F, each will describe a closed curve passing in the teeth of one of the calendar indicating organs. Also, it is assumed that those parts of the connecting rod AB which form points E and F will grip the teeth of these organs and thus cause a displacement of these organs such that each one will jump by one step when the curve is followed in one direction, whereas when the curve is followed in the other direction it will be slightly displaced and will return to its initial position.
  • the connecting rod AB of this system does comprise a point (not shown in FIG. 1) which practically follows a closed path reducing to a line segment which will be followed by that point once in one direction and once in the other.
  • a correction device with a particularly advantageous operation.
  • FIG. 2 illustrates a practical embodiment of the system of FIG. 1.
  • the drawing shows a date ring 1 which is provided with a toothing 2 of ill teeth and which is normally maintained in a rest position by placing the jumper beak 3 between two teeth 2.
  • Jumper beak 3 is conventionally actuated by a spring 4.
  • These elements are assembled on the bottom plate of a calendar watch movement and the date ring 1 is normally actuated by one step every day by means of a calendar mechanism (not shown).
  • a day-star 5, having seven teeth, is coaxial with ring 1 and also extends in the same plane as the date ring 1. Day-star 5 is maintained in a rest position by jumper 6 which is actuated by spring 7. This star 5,
  • the correction device of the watch movement shown in the drawing comprises a circular disc 8 rotating around an axis which is rotatively mounted on the movement bottom plate. It may be fastened for instance to a pinion 9 which may be driven by a control organ such as the winding stem.
  • a rotation of the winding stem causes a rotation of disc 8 around the axis 20 and the center of disc 8 then describes the circular curve 10.
  • the rotation of organ 8, pinion 9 may be driven by any other means such as the auxiliary crown, push-piece, stay, etc.
  • Disc 8 loosely engages a circular opening provided by the driving organ 11.
  • the latter is a blanked metallic plate in the general shape of a triangle provided with three beaks 12, 13 and 14.
  • Beaks 12 and 13 are made up of cut-out languets that are blanked with the metallic plate and are folded by 90 upwards, whereas beak 14 is simply shaped by a cut-out in the form of a crescent in the periphery of the metallic plate 11.
  • This plate is housed on the movement bottom plate and partly extends under the date organ 1.
  • the two beaks 12 and 13 are in the vicinity of the daystar 5 and of the date toothing 2, respectively.
  • plate 11 is provided with a stud 15 projecting perpendicular to a face of plate 11. This stud may be stamped into plate 11 or may be force-fitted into it. It
  • a spring l7' which may be made from an elastic wire or which may consist of a blade rests on beak 14 so as to actuate it into a direction approximately parallel to that of groove 16.
  • the driving organ 11, the pinion or transmission organ 8, 9, the stud l5 and groove 16 make up a jointed system with four joints comprising two fixed joints of which one is brought to infinity in a direction perpendicular to the groove 16, that is, a jointed system constituting a particular case of that of FIG. 1.
  • the dimensions of the system are such that the crank-handle M,,-A constituted by organ 8,9 may perform a complete rotation around its axis while the driving organ 1 1 which constitutes the connecting rod AB, will assume a determined position for each orientation of the transmission organ 8,9, where such position is obtained by the displacement of stud 15 in groove 16.
  • the points of the jointed system corresponding to points E and F of FIG.
  • FIG. 2 shows in solid lines the various organs of the mechanism when in a rest position in which the two jumpers 6 and 3 keep the day and date indicating organ in such orientation that each one of these organs causes one of its indications to appear in the appropriate window in the dial.
  • the transmission organ 8,9 is made to rotate clockwise around the axis 20, the beak 13 will follow curve 19 in the counter-clockwise sense, and will grip immediately a tooth 2 and cause the date organ 1 to move in the counter-clockwise direction, as can be seen. This motion will proceed until the jointed mechanism and the date organ have reached the position shown in dashed lines in FIG. 2.
  • the displacement of beak 12 which follows curve 18 in the counterclockwise direction, will not alter the position of star 5 nor that of jumper 6.
  • the control organ is constituted by the winding stem 21 of the movement.
  • This stem is provided at its outer end with a crown 37 and is arrayed radially in the movement.
  • a setting lever 22 which may assume three different positions which are determined by the three notches 23a, 23b and 23c which are fashioned in the setting lever spring 23 and at the top thereof.
  • the inside position of stem 2B is the winding position.
  • the clutch-pinion 24 is then kept in place by lever 25 and by the spring lever 26 so that it will gear the winding pinion 27. This position is not shown in the drawing.
  • Rotation of stem 21 causes rotation of the crown wheel (not shown) and consequently the winding of the spring motor.
  • setting lever 22 will move by keeping the lever in place, but its front edge 32 will cause lever 29 to pivot so that setting wheel 30 will be freed from pinion 9 and will engage the minute wheel 33.
  • the latter simultaneously actuates the hourwheel 34 and the cannon-pinion 35 as in any other conventional hour-setting mechanism.
  • the axis of rotation of wheel and pinion 8,9 could be placed in the immediate vicinity of the periphery of the bottom plate of the movement and that the setting wheel 30 may be so located as to radially engage pinion 9 and the minute wheel 33, and this set of factors pro vides particularly favorable conditions for meshing in.
  • beak I4 is at such a location that the curve 36 described by it is in a shape very close to an extremely elongated ellipse. This curve may be practically likened to a simple line stretching between these two end points and which line is crossed by beak 14 once in one direction and once in the other direction, during the rotation of the control organ.
  • the position held by beak I4 when the mechanism is at rest is one of the extreme points of this line which is almost straight and parallel to groove 16.
  • the beaks ofjumpers 3 and 6 may be asymmetrical, one of the flanks being longer than the other. This is the case for jumper 3 in the embodiment shown in the drawing.
  • Apparatus for selectively correcting the positions of indicating members of a calendar watch comprising:
  • control member extending from the interior to the exterior of said watch
  • holding means normally holding said first and second indicating members in selected ones of a plurality of available positions
  • a driving member coupled to said eccentric for movement therewith, said driving member having a stud attached thereto;
  • first and second driving beaks on said driving member said beaks engaging said first and second indicating members, respectively, during a complete rotation of said eccentric, said driving member following a restricted definte path of movement and said beaks following non-circular paths of movement during said complete rotation.
  • a device comprising a jumper, having an asymmetrical beak, which normally maintains an indicating member in a fixed position, said beak having two ramps of unequal length.
  • first and second indicating members have toothed portions and said holding means comprises first and second jumper members biased into engagement with respective toothed portions of said first and second indicating members.
  • Apparatus according to claim 5 further comprising a resilient member; and wherein said driving member includes a third beak describing a flattened curve between two end points, said resilient member contactsaid first and second indicating members.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
US00294507A 1971-10-06 1972-10-03 Correction device for day-and-date calendar watches Expired - Lifetime US3779000A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1454271A CH584926B5 (pt) 1971-10-06 1971-10-06

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US3779000A true US3779000A (en) 1973-12-18

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US00294507A Expired - Lifetime US3779000A (en) 1971-10-06 1972-10-03 Correction device for day-and-date calendar watches

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JP (1) JPS4846357A (pt)
CH (2) CH1454271A4 (pt)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3890778A (en) * 1973-08-02 1975-06-24 Ebauches Sa Watch stem intermediate setting position with functions determined by whether intermediate position was achieved by pushing stem in or pulling stem out
US4109458A (en) * 1975-11-27 1978-08-29 Kabushiki Kaisha Daini Seikosha Date and day correcting device of a timepiece
US4300222A (en) * 1976-12-03 1981-11-10 Citizen Watch Co., Ltd. Electronic timepiece
FR2568027A1 (fr) * 1984-07-20 1986-01-24 Parrenin Sa Montre avec systeme de correction du calendrier
CN100407076C (zh) * 2003-11-25 2008-07-30 蒙特雷布勒盖股份有限公司 具有用于驱动和校正两个指示器的装置的日历机构
US20090040880A1 (en) * 2005-08-17 2009-02-12 Jean-Francois Ruchonnet Clock movement comprising indicators for displaying units and tens

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3470688A (en) * 1967-07-26 1969-10-07 Suwa Seikosha Kk Date and day correcting device of a calendar timepiece
US3470687A (en) * 1966-12-15 1969-10-07 Suwa Seikosha Kk Date and day correcting device of a calendar timepiece
US3597916A (en) * 1968-06-20 1971-08-10 Seiko Instr & Electronics Day and date corrector mechanism for a watch
US3645090A (en) * 1969-06-19 1972-02-29 Citizen Watch Co Ltd Day-date quick-adjuster for calender timepiece
US3659413A (en) * 1970-03-16 1972-05-02 Citizen Watch Co Ltd Single position date or day corrector with gravity controlled clutch
US3662534A (en) * 1970-05-01 1972-05-16 Omega Brandt & Freres Sa Louis Correcter mechanism for day and date watch
US3691756A (en) * 1969-12-08 1972-09-19 Suwa Seikosha Kk Date and day correcting device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4430766Y1 (pt) * 1966-12-05 1969-12-18

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3470687A (en) * 1966-12-15 1969-10-07 Suwa Seikosha Kk Date and day correcting device of a calendar timepiece
US3470688A (en) * 1967-07-26 1969-10-07 Suwa Seikosha Kk Date and day correcting device of a calendar timepiece
US3597916A (en) * 1968-06-20 1971-08-10 Seiko Instr & Electronics Day and date corrector mechanism for a watch
US3645090A (en) * 1969-06-19 1972-02-29 Citizen Watch Co Ltd Day-date quick-adjuster for calender timepiece
US3691756A (en) * 1969-12-08 1972-09-19 Suwa Seikosha Kk Date and day correcting device
US3659413A (en) * 1970-03-16 1972-05-02 Citizen Watch Co Ltd Single position date or day corrector with gravity controlled clutch
US3662534A (en) * 1970-05-01 1972-05-16 Omega Brandt & Freres Sa Louis Correcter mechanism for day and date watch

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3890778A (en) * 1973-08-02 1975-06-24 Ebauches Sa Watch stem intermediate setting position with functions determined by whether intermediate position was achieved by pushing stem in or pulling stem out
US4109458A (en) * 1975-11-27 1978-08-29 Kabushiki Kaisha Daini Seikosha Date and day correcting device of a timepiece
US4300222A (en) * 1976-12-03 1981-11-10 Citizen Watch Co., Ltd. Electronic timepiece
FR2568027A1 (fr) * 1984-07-20 1986-01-24 Parrenin Sa Montre avec systeme de correction du calendrier
CN100407076C (zh) * 2003-11-25 2008-07-30 蒙特雷布勒盖股份有限公司 具有用于驱动和校正两个指示器的装置的日历机构
US20090040880A1 (en) * 2005-08-17 2009-02-12 Jean-Francois Ruchonnet Clock movement comprising indicators for displaying units and tens
US8004936B2 (en) * 2005-08-17 2011-08-23 Richemont International S.A. Clock movement comprising selectable indicators

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Publication number Publication date
JPS4846357A (pt) 1973-07-02
CH1454271A4 (pt) 1976-07-30
CH584926B5 (pt) 1977-02-15

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