EP1343056A1 - Wristwatch with solar time display - Google Patents

Wristwatch with solar time display Download PDF

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Publication number
EP1343056A1
EP1343056A1 EP02405177A EP02405177A EP1343056A1 EP 1343056 A1 EP1343056 A1 EP 1343056A1 EP 02405177 A EP02405177 A EP 02405177A EP 02405177 A EP02405177 A EP 02405177A EP 1343056 A1 EP1343056 A1 EP 1343056A1
Authority
EP
European Patent Office
Prior art keywords
time
hand
displaying
dial
solar
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.)
Withdrawn
Application number
EP02405177A
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German (de)
French (fr)
Inventor
Eric A. Loth
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.)
British Masters SA
Original Assignee
British Masters SA
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 British Masters SA filed Critical British Masters SA
Priority to EP02405177A priority Critical patent/EP1343056A1/en
Priority to DE60332431T priority patent/DE60332431D1/en
Priority to PCT/CH2003/000152 priority patent/WO2003077043A2/en
Priority to AT03702275T priority patent/ATE467157T1/en
Priority to US10/506,922 priority patent/US7372781B2/en
Priority to EP03702275A priority patent/EP1483630B1/en
Publication of EP1343056A1 publication Critical patent/EP1343056A1/en
Withdrawn legal-status Critical Current

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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
    • G04B19/22—Arrangements for indicating different local apparent times; Universal time pieces
    • G04B19/23—Arrangements for indicating different local apparent times; Universal time pieces by means of additional hands or additional pairs of hands

Definitions

  • the present invention relates to watches provided with a solar time display.
  • Time management on our planet is today based on a reference time, called GMT and on a time zone structure, within which the calendar time is the same everywhere.
  • Such a definition of the time greatly simplifies human relationships.
  • This time is, however, offset from the solar time, a function of the longitude of a place, and which is displayed by the sundials.
  • the aim of the present invention is to propose a watch making it possible to know both the civil time and the solar time, for any longitude and in any time zone.
  • the watch according to the invention comprises means for displaying civil time, means for displaying solar time and means for correcting the displays of civil and solar time.
  • the correction means are arranged so as to allow the relative phase shift of the means for displaying the civil time and the solar time.
  • this watch includes means for displaying this phase shift.
  • the means for displaying the civil time indicate the civil time of a time zone to be taken into account, and the means for displaying the phase difference the difference between the longitude of the middle of this zone and the longitude of the place considered.
  • the means for displaying the solar time comprise, a solar time hand performing one revolution in twelve hours and a disc making a revolution in twenty-four hours, driven in synchronism with the hand and carrying an index indicating the north arranged so that the hand and the index are superimposed when the hand displays midnight .
  • the second dial bears a mark indicating north, arranged so that the hand and the mark are superimposed when the hand displays midnight.
  • the needle comprises an aiming member to allow its orientation in the direction of the sun, comprising a body fixed to a mobile of the watch, an index extending above the body, and a target. , attached to the body and on which the shadow of the index finger, generated by the sun, can be projected.
  • the watch includes, in addition, means for correcting the equation of time.
  • the means for correcting the equation of time includes means for displaying the position of the earth on the ecliptic.
  • FIG. 1 represents a watch according to a first embodiment of the invention. It comprises a box 10 in which is housed a movement which will be partially described with reference to FIG. 3 and which drives display means.
  • the movement carries a first dial 12, central and provided with a twelve-hour scale, and a second dial 13, annular, coplanar and concentric with dial 12, and carrying a twenty-four hour scale. It animates 14 minute hands, 16 hours of civil time 16 making a turn in twelve hours, 18 solar time making a turn in twenty-four hours.
  • a needle 23 ensures the display of the position of the Earth on the ecliptic, a turn of the needle 23 corresponding substantially to a tropical year.
  • a time-setting crown 24 is disposed on the side of the case 10, to allow the correction of the information displayed by the watch, as will be explained below, and the winding of a barrel spring if it is a mechanical watch.
  • the needle 18 comprises, visible in FIGS. 1 and 2, a body 18a, a folded point 18b as well as an aiming dot 18c, intended to facilitate the orientation of the part to determine the direction of the north.
  • the aiming is done by aligning the shadow of the point 18b in the middle part of the patch 18c, which thus forms a target, which advantageously comprises a clear line arranged between two dark sides. When the shadow and the light line coincide, the solar time hand 18 is then oriented towards the sun.
  • the mechanism carrying the hands 16, 18, 20 and 23 is shown in FIG. 3. It is arranged on a watch plate 26 serving as a frame for the components of the watch, and in particular its time base and its finishing train, those -this not visible because arranged on the hidden face of the plate 26.
  • the gear train comprises, in a conventional manner, a minute wheel, carrying the hand 14 and meshing with a timer wheel, which is connected to the time setting mechanism and to a barrel wheel 28, placed in the center. of movement and intended to carry the needle 16.
  • a solar time wheel 30 is superimposed on the barrel wheel 28. It is arranged to carry the needle 18.
  • An intermediate wheel 32, mounted on a phase shifter 34 connects the wheel 30 to the wheel 28, increasing the movement of a factor 2.
  • the phase shifter 34 is pivotally mounted in the center of the plate, on the barrel of the wheel 30. It is provided with a toothed sector 34a, the function of which will be explained later.
  • a gear 36 meshing with the toothed sector 34a and pivotally mounted on a lever 38 The gear is kinematically connected to the time-setting mechanism of the watch, for example by a mobile, pivotally mounted on a lever. and not shown in the drawing to avoid overloading it, connected to the time-setting mechanism, which is controlled by the crown 24 when it is in one of its correction positions.
  • the reference 36 is provided with a pivot 36a on which the needle 20 is fixed.
  • the crown 24 When the crown 24 is in the position in which the correction mechanism is kinematically connected to the gear 36, its rotation causes the gear 36 to rotate, which drives the phase shifter 34 and, with it, the intermediate wheel 32. The latter cooperates with the wheels 28 and 30 as a flat differential cog satellite does.
  • the hand 18 is out of phase with respect to the hour hand 16 , so that it displays the solar time of the place considered.
  • the reference 36 cooperates with a jumper spring not shown in the drawing and adjusted so that it cannot rotate under the effect of the torque generated by the wheel 28 on the wheel 32.
  • the correction of the equation of time is carried out by means of a wheel 40, making a revolution in 3651 ⁇ 4 days and carrying a cam of equation of time 42, and provided with a pivot 40a on which the needle 23 is driven .
  • the wheel 40 advantageously has 487 teeth. It is rotated by a pawl 44 performing a back-and-forth movement and controlled by a cam carried by a wheel connected to the gear train and performing one revolution in 18 hours.
  • the cam 42 cooperates with a finger 38a that comprises the rocker 38. This finger 38a is held in abutment against the cam 42 by a spring 46 fixed on the plate 26. In this way, the rocker 38 moves slowly, in abutment against the cam 42, thus correcting the equation of time.
  • the dial 22 is rigidly fixed on the rocker 38, by means which have not been shown, so that it follows the movement of this rocker. It includes an index 22a making it possible to display the equation of time, with reference to a scale 13a of the dial 13.
  • the watch described therefore makes it possible to display solar time with precision, as far as the longitude of the place is known, by taking into account and by simply displaying the equation of time.
  • FIG. 4 represents a watch according to a second embodiment.
  • the box 10 in which is housed a movement which drives display means.
  • the movement carries the first dial 12, fitted with a twelve-hour scale, the second dial 13 and the minute hands 14, hours of civil time 16 which turns around in twelve hours, and solar time 18 which turns around in twenty-four hours.
  • the dial 13 is arranged so that it can rotate with reference to the dial 12 and be angularly displaced by the time-setting crown 24.
  • the drive by the crown 24 can, for example, be done first pulled position, by means of a mechanism well known to those skilled in the art.
  • the dial 12 carries an index 12a in the position through which the hour hand 16 passes at midnight and at noon, while the dial 13 carries a scale 13a opposite the index 12a, as well as an arrow 13b arranged at so that it is superimposed on the hand 18 when it is midnight of solar time, indicating north when the hand 18 is oriented towards the sun.
  • the dial 13 could be replaced by a rotating ring mounted on the box 10 around the crystal.
  • the bezel can be turned directly, without involving the crown and the correction mechanism.
  • the scale 13a makes it possible to adjust the position of the dial 13 as a function of the longitude of the place considered, by orienting it so that the value located opposite the index 12a is equal to the longitude offset between the location and the middle of the time zone.
  • This watch only takes into account the offset due to longitude. It is also possible to complete it, with a correction of the equation of time, by a mechanism similar to that described with reference to FIG. 3. In this case, however, the wheel 32 is fixed and the pinion 36 meshes with a toothing that comprises the dial 13, which would then be displaced by a rotation of the crown 14, and by the movement of the lever 38 pressing against the cam 40.
  • the watch shown in Figure 5 corresponds to a third embodiment. It is provided with a movement arranged in a box 10 and which will be described with reference to FIG. 6. Like the two embodiments described above, this watch is equipped with the 14 minute and 16 hour hands for civil time , the hand 20 and the longitude dial 22, the ecliptic hand 23, as well as the time-setting crown 24.
  • the calendar time is read on an annular dial 48 provided with a twelve-hour scale, which serves as a reference for hands 14 and 16.
  • the display of the solar time is carried out by means of a needle 50, performing one revolution in twelve hours, and a central disc 52, driven in synchronism with the needle 50 and performing one revolution in twenty-four hours.
  • the disc 52 carries an index 52a, which indicates the north when the solar time hand 50 is aimed at the sun.
  • the needle 50 may also be provided with a sighting member as defined with reference to FIGS. 1 and 2. It has not, however, been shown in FIG. 5.
  • This movement further comprises a first central solar wheel 54, superimposed on the wheel 28 and of the same diameter, a second solar wheel 56, coaxial with the wheels 28 and 54.
  • a satellite 58 meshing with both the wheel 28 and the wheel 54, is pivotally mounted on the phase shifter 34, which carries, in addition a mobile 60, which is driven by the wheel 54 and drives the wheel 56.
  • the adjustment of the phase shift between the solar time and the civil time is done identically to what has been described with reference to Figures 1 and 3, as well as the correction of the equation of time.
  • the solar wheels 56 and 58 are respectively intended to carry the needle 50 and the disc 52.
  • the wheels 28 and 54 have the same diameter, and they are kinematically connected by the satellite 58, they rotate in the same direction and at the same speed as long as the phase shifter 34 is fixed.
  • the mobile 60 and the wheel 56 have numbers of teeth chosen so that the wheel 56 rotates twice as slowly as the wheel 54, that is to say that it makes one revolution in twenty-four hours.
  • the display of solar time is done on the twelve-hour scale, which is more usual - and therefore easier to read - than that of twenty-four hours.
  • the three embodiments described above make it possible to determine the direction of the north at a given place, insofar as the longitude of this place is known, by orienting the needle 18 or 50 in the direction of the Sun. It is also possible to determine the longitude of the place considered by noting, at night and on a fixed surface, the direction of the North Star, which corresponds to geographic north. The next day, we orient the watch so that the index indicating north coincides with the noted direction. Then just correct the longitude indicator until the needle 18 is aimed at the Sun.
  • the watches thus described therefore make it possible, by simple and easy-to-handle technical means, to display both civil time and solar time, and to determine the direction of geographic north or the longitude of the place considered.
  • These watches can, of course, be the subject of many other variants, without going beyond the ambit of the invention. They may or may not therefore include a correction relating to the equation of time.
  • the mechanisms intended to ensure the phase shift between solar time and civil time, as a function of the longitude and the equation of time can, of course, have very different structures and shapes.
  • the wheel 40 could also be associated with a conventional calendar mechanism, displaying the calendar and the month, the time equation cam being controlled by the mobile carrying the month indicator.
  • the above description relates to a mechanical type watch. It is also possible to envisage solutions using a display by means other than needles, for example liquid crystal display cells.
  • the time base will be a quartz. So that this piece can also determine the direction of geographic north, at least the solar time will be displayed by means of a hand simulated by indexes arranged radially on the display cell.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)

Abstract

The watch has an inner twelve hour dial (12) with minute and hour hands (14,16) to show the civil time and an outer twenty four hour dial (13) with single hand (18) to indicate solar time. The solar hand is set by using an adjustment (20,22,22a) to allow for the actual longitude compared to the time zone longitude and also by using an equation of time adjustment (23). Sighting the sun with the solar hand gives the north position (13b)

Description

La présente invention se rapporte aux montres munies d'un affichage de temps solaire. La gestion du temps, sur notre planète, est aujourd'hui basée sur un temps de référence, appelé GMT et sur une structure de fuseaux, à l'intérieur desquels l'heure civile est partout la même. Une telle définition de l'heure simplifie grandement les relations humaines. Cette heure est, toutefois, en décalage avec le temps solaire, fonction de la longitude d'un lieu, et qui est affiché par les cadrans solaires. Le but de la présente invention est de proposer une montre permettant de connaître à la fois le temps civil et le temps solaire, pour une longitude quelconque et dans n'importe quel fuseau horaire.The present invention relates to watches provided with a solar time display. Time management on our planet is today based on a reference time, called GMT and on a time zone structure, within which the calendar time is the same everywhere. Such a definition of the time greatly simplifies human relationships. This time is, however, offset from the solar time, a function of the longitude of a place, and which is displayed by the sundials. The aim of the present invention is to propose a watch making it possible to know both the civil time and the solar time, for any longitude and in any time zone.

A cet effet, la montre selon l'invention comporte des moyens d'affichage du temps civil, des moyens d'affichage du temps solaire et des moyens de correction des affichages de temps civil et solaire. Selon l'invention, les moyens de correction sont agencés de manière à permettre le déphasage relatif des moyens d'affichage du temps civil et du temps solaire. De plus, cette montre comporte des moyens d'affichage de ce déphasage.To this end, the watch according to the invention comprises means for displaying civil time, means for displaying solar time and means for correcting the displays of civil and solar time. According to the invention, the correction means are arranged so as to allow the relative phase shift of the means for displaying the civil time and the solar time. In addition, this watch includes means for displaying this phase shift.

De la sorte, pour que la montre affiche effectivement le temps solaire, il suffit que les moyens d'affichage du temps civil indiquent le temps civil d'un fuseau horaire à prendre en compte, et les moyens d'affichage du déphasage la différence entre la longitude du milieu de ce fuseau et la longitude du lieu considéré.In this way, for the watch to effectively display the solar time, it suffices that the means for displaying the civil time indicate the civil time of a time zone to be taken into account, and the means for displaying the phase difference the difference between the longitude of the middle of this zone and the longitude of the place considered.

Dès lors que le temps solaire est connu, et que le soleil est visible, il est facile de déterminer la direction du nord géographique au moyen d'une telle montre, spécialement si les moyens d'affichage du temps solaire comportent une aiguille de temps solaire effectuant un tour en vingt-quatre heures. En effet, il suffit de viser le soleil avec l'aiguille de temps solaire. Le nord se trouve alors dans la direction qu'indique, sur le cadran, l'index du minuit de temps solaire.As soon as solar time is known, and the sun is visible, it is easy to determine the direction of geographic north by means of such a watch, especially if the means for displaying solar time include a solar time hand. going around in twenty-four hours. Indeed, it is enough to aim at the sun with the solar time hand. The north is then in the direction indicated by the index of midnight solar time on the dial.

Dans un premier mode de réalisation de cette montre, les moyens d'affichage du temps solaire comportent, une aiguille de temps solaire effectuant un tour en douze heures et un disque effectuant un tour en vingt-quatre heures, entraîné en synchronisme avec l'aiguille et portant un index indiquant le nord disposés de manière à ce que l'aiguille et l'index soient superposées lorsque l'aiguille affiche minuit.In a first embodiment of this watch, the means for displaying the solar time comprise, a solar time hand performing one revolution in twelve hours and a disc making a revolution in twenty-four hours, driven in synchronism with the hand and carrying an index indicating the north arranged so that the hand and the index are superimposed when the hand displays midnight .

Dans un deuxième mode de réalisation,

  • les moyens d'affichage du temps civil comportent une aiguille des heures effectuant un tour en douze heures et un premier cadran, fixe, dont la partie supérieure correspond à l'affichage de midi et de minuit,
  • les moyens d'affichage du temps solaire comprennent une aiguille effectuant un tour en vingt-quatre heures, un deuxième cadran, fixe, indiquant vingt-quatre heures sur un tour, dont la partie supérieure correspond à l'affichage de minuit,
  • les moyens de correction comportent un déphaseur disposé entre les moyens d'affichage du temps civil et les moyens d'affichage du temps solaire et permettant de déphaser l'aiguille de temps solaire en référence à l'aiguille des heures, et
  • ledit déphaseur est muni de moyens d'affichage, pour indiquer le déphasage que présente l'aiguille de temps solaire par rapport à l'aiguille de temps civil.
In a second embodiment,
  • the means for displaying the civil time include an hour hand making a revolution in twelve hours and a first fixed dial, the upper part of which corresponds to the display of noon and midnight,
  • the means for displaying the solar time include a hand making one revolution in twenty-four hours, a second, fixed dial indicating twenty-four hours on one revolution, the upper part of which corresponds to the midnight display,
  • the correction means comprise a phase shifter disposed between the means for displaying the civil time and the means for displaying the solar time and making it possible to phase the solar time hand with reference to the hour hand, and
  • said phase shifter is provided with display means, to indicate the phase shift that the solar time hand has with respect to the civil time hand.

Dans un troisième mode de réalisation,

  • les moyens d'affichage du temps civil comportent une aiguille des heures effectuant un tour en douze heures et un premier cadran, fixe, dont la partie supérieure correspond à l'affichage de midi et minuit,
  • les moyens d'affichage du temps solaire comprennent une aiguille effectuant un tour en vingt-quatre heures et un deuxième cadran, mobile en rotation, indiquant vingt-quatre heures sur un tour, dont la partie supérieure correspond à l'affichage de minuit,
  • les moyens de correction sont agencés pour permettre la rotation du deuxième cadran en référence au premier cadran, de manière à déphaser leurs échelles, et
  • le premier et le deuxième cadran comporte l'un un index et l'autre une échelle d'indication d'une différence de longitude, permettant l'ajustement du déphasage.
In a third embodiment,
  • the means for displaying the civil time comprise an hour hand making a revolution in twelve hours and a first, fixed dial, the upper part of which corresponds to the display of noon and midnight,
  • the means for displaying the solar time include a hand making one revolution in twenty-four hours and a second dial, movable in rotation, indicating twenty-four hours on one revolution, the upper part of which corresponds to the midnight display,
  • the correction means are arranged to allow the rotation of the second dial with reference to the first dial, so as to phase their scales, and
  • the first and second dials, one includes an index and the other a scale for indicating a difference in longitude, allowing the adjustment of the phase shift.

Dans les deux derniers modes de réalisation, il est avantageux que le deuxième cadran porte une marque indiquant le nord, disposée de manière à ce que l'aiguille et la marque soient superposées lorsque l'aiguille affiche minuit.In the last two embodiments, it is advantageous that the second dial bears a mark indicating north, arranged so that the hand and the mark are superimposed when the hand displays midnight.

Afin de faciliter la visée du soleil, l'aiguille comporte un organe de visée pour permettre son orientation en direction du soleil, comprenant un corps fixé à un mobile de la montre, un index s'étendant au-dessus du corps, et une cible, solidaire du corps et sur laquelle l'ombre de l'index, engendrée par le soleil, peut être projetée.In order to facilitate the aiming of the sun, the needle comprises an aiming member to allow its orientation in the direction of the sun, comprising a body fixed to a mobile of the watch, an index extending above the body, and a target. , attached to the body and on which the shadow of the index finger, generated by the sun, can be projected.

Au cours de l'année, il apparaît un déphasage entre le temps solaire moyen et le temps solaire vrai, connu sous le nom d'équation du temps. La différence entre le temps solaire moyen et le temps solaire vrai est comprise entre + 15 et -15 minutes de temps environ. Une telle différence a une influence significative lorsqu'on veut définir, avec précision, la direction du nord. Aussi, il est avantageux que la montre comporte, en outre, des moyens de correction de l'équation du temps.During the year, a phase difference appears between the mean solar time and the true solar time, known as the equation of time. The difference between the average solar time and the true solar time is between + 15 and -15 minutes of time approximately. Such a difference has a significant influence when one wants to define, with precision, the direction of north. Also, it is advantageous that the watch includes, in addition, means for correcting the equation of time.

Afin de pouvoir maîtriser cette information, dans le but notamment de régler la montre si elle s'arrête, il est avantageux que les moyens de correction de l'équation du temps comprennent des moyens d'affichage de la position de la terre sur l'écliptique.In order to be able to control this information, in particular for the purpose of adjusting the watch if it stops, it is advantageous for the means for correcting the equation of time to include means for displaying the position of the earth on the ecliptic.

D'autres avantages et caractéristiques de l'invention ressortiront de la description qui va suivre, faite en regard du dessin annexé, dans lequel :

  • la figure 1 représente une montre permettant l'affichage du temps solaire et du nord géographique,
  • la figure 2 illustre, vue de côté, une partie de la montre de la figure 1,
  • la figure 3 montre, de manière schématique, un mécanisme permettant cette fonction, et
  • la figure 4 se rapporte à un deuxième mode de réalisation d'une montre permettant l'affichage du temps solaire et du nord géographique.
Other advantages and characteristics of the invention will emerge from the description which follows, given with reference to the appended drawing, in which:
  • FIG. 1 represents a watch allowing the display of solar time and geographic north,
  • FIG. 2 illustrates, seen from the side, a part of the watch of FIG. 1,
  • FIG. 3 schematically shows a mechanism enabling this function, and
  • Figure 4 relates to a second embodiment of a watch for displaying solar time and geographic north.

La figure 1 représente une montre selon un premier mode de réalisation de l'invention. Elle comporte une boîte 10 dans laquelle est logé un mouvement qui sera partiellement décrit en référence à la figure 3 et qui entraîne des moyens d'affichage. Le mouvement porte un premier cadran 12, central et muni d'une échelle douze heures, et un deuxième cadran 13, annulaire, coplanaire et concentrique au cadran 12, et portant une échelle vingt-quatre heures. Il anime des aiguilles de minutes 14, d'heures de temps civil 16 faisant un tour en douze heures, de temps solaire 18 faisant un tour en vingt-quatre heures.FIG. 1 represents a watch according to a first embodiment of the invention. It comprises a box 10 in which is housed a movement which will be partially described with reference to FIG. 3 and which drives display means. The movement carries a first dial 12, central and provided with a twelve-hour scale, and a second dial 13, annular, coplanar and concentric with dial 12, and carrying a twenty-four hour scale. It animates 14 minute hands, 16 hours of civil time 16 making a turn in twelve hours, 18 solar time making a turn in twenty-four hours.

Il comporte, en outre, une aiguille de longitude 20, disposée à l'avant d'un troisième cadran 22, mobile et situé au-dessus des cadrans 12 et 13. Une aiguille 23 assure l'affichage de la position de la Terre sur l'écliptique, un tour de l'aiguille 23 correspondant sensiblement une année tropique.It further comprises a longitude needle 20, disposed at the front of a third dial 22, movable and situated above the dials 12 and 13. A needle 23 ensures the display of the position of the Earth on the ecliptic, a turn of the needle 23 corresponding substantially to a tropical year.

Une couronne de mise à l'heure 24 est disposée sur le côté de la boîte 10, pour permettre la correction des informations affichées par la montre, comme cela sera expliqué plus loin, et le remontage d'un ressort de barillet s'il s'agit d'une montre mécanique.A time-setting crown 24 is disposed on the side of the case 10, to allow the correction of the information displayed by the watch, as will be explained below, and the winding of a barrel spring if it is a mechanical watch.

L'aiguille 18 comporte, visibles sur les figures 1 et 2, un corps 18a, une pointe repliée 18b ainsi qu'une pastille de visée 18c, destinée à faciliter l'orientation de la pièce pour déterminer la direction du nord. La visée se fait en alignant l'ombre de la pointe 18b dans la partie médiane de la pastille 18c, qui forme ainsi une cible, laquelle comporte avantageusement un trait clair disposé entre deux côtés sombres. Lorsque l'ombre et le trait clair coïncident, l'aiguille 18 de temps solaire est alors orientée vers le soleil.The needle 18 comprises, visible in FIGS. 1 and 2, a body 18a, a folded point 18b as well as an aiming dot 18c, intended to facilitate the orientation of the part to determine the direction of the north. The aiming is done by aligning the shadow of the point 18b in the middle part of the patch 18c, which thus forms a target, which advantageously comprises a clear line arranged between two dark sides. When the shadow and the light line coincide, the solar time hand 18 is then oriented towards the sun.

Le mécanisme portant les aiguilles 16, 18, 20 et 23 est représenté sur la figure 3. Il est disposé sur une platine de montre 26 servant de bâti aux composants de la montre, et notamment sa base de temps et son rouage de finissage, ceux-ci n'étant pas visibles car disposés sur la face cachée de la platine 26.The mechanism carrying the hands 16, 18, 20 and 23 is shown in FIG. 3. It is arranged on a watch plate 26 serving as a frame for the components of the watch, and in particular its time base and its finishing train, those -this not visible because arranged on the hidden face of the plate 26.

Le rouage de finissage comporte, de manière classique, une roue des minutes, portant l'aiguille 14 et engrenant avec une roue de minuterie, laquelle est reliée au mécanisme de mise à l'heure et à une roue à canon 28, disposée au centre du mouvement et destinée à porter l'aiguille 16.The gear train comprises, in a conventional manner, a minute wheel, carrying the hand 14 and meshing with a timer wheel, which is connected to the time setting mechanism and to a barrel wheel 28, placed in the center. of movement and intended to carry the needle 16.

Une roue de temps solaire 30 est superposée à la roue à canon 28. Elle est agencée pour porter l'aiguille 18. Une roue intermédiaire 32, montée sur un déphaseur 34 relie la roue 30 à la roue 28, démultipliant le mouvement d'un facteur 2.A solar time wheel 30 is superimposed on the barrel wheel 28. It is arranged to carry the needle 18. An intermediate wheel 32, mounted on a phase shifter 34 connects the wheel 30 to the wheel 28, increasing the movement of a factor 2.

Le déphaseur 34 est monté pivotant au centre de la platine, sur le canon de la roue 30. Il est muni d'un secteur denté 34a, dont la fonction sera expliquée plus loin.The phase shifter 34 is pivotally mounted in the center of the plate, on the barrel of the wheel 30. It is provided with a toothed sector 34a, the function of which will be explained later.

Pour assurer un affichage correct du temps solaire comparativement au temps civil, deux corrections doivent être prises en compte :

  • La longitude du lieu où se trouve la personne, et
  • L'équation du temps.
To ensure correct display of solar time compared to civil time, two corrections must be taken into account:
  • The longitude of the person's location, and
  • The equation of time.

Ces corrections sont assurées par un renvoi 36 engrenant avec le secteur denté 34a et monté pivotant sur une bascule 38. Le renvoi est relié cinématiquement au mécanisme de mise à l'heure de la montre, par exemple par un mobile, monté pivotant sur une bascule et non représentés au dessin pour éviter de le surcharger, relié au mécanisme de mise à l'heure, lequel est commandé par la couronne 24 lorsqu'elle se trouve dans l'une de ses positions de correction.These corrections are ensured by a gear 36 meshing with the toothed sector 34a and pivotally mounted on a lever 38. The gear is kinematically connected to the time-setting mechanism of the watch, for example by a mobile, pivotally mounted on a lever. and not shown in the drawing to avoid overloading it, connected to the time-setting mechanism, which is controlled by the crown 24 when it is in one of its correction positions.

Le renvoi 36 est muni d'un pivot 36a sur lequel l'aiguille 20 est fixée. Lorsque la couronne 24 est dans la position dans laquelle le mécanisme de correction est relié cinématiquement au renvoi 36, sa rotation fait tourner le renvoi 36, lequel entraîne le déphaseur 34 et, avec lui, la roue intermédiaire 32. Cette dernière coopère avec les roues 28 et 30 comme le fait un satellite de rouage différentiel plan.The reference 36 is provided with a pivot 36a on which the needle 20 is fixed. When the crown 24 is in the position in which the correction mechanism is kinematically connected to the gear 36, its rotation causes the gear 36 to rotate, which drives the phase shifter 34 and, with it, the intermediate wheel 32. The latter cooperates with the wheels 28 and 30 as a flat differential cog satellite does.

Comme la roue 28 est en prise avec le rouage de finissage, elle ne peut pas sans autre être déplacée, de telle sorte que c'est la roue 30 qui tourne, et avec elle l'aiguille 18.As the wheel 28 is engaged with the gear train, it cannot be moved without other, so that it is the wheel 30 which turns, and with it the needle 18.

Ainsi, en amenant l'aiguille 20 en regard d'un point du cadran 22 correspondant à la différence entre les longitudes du lieu considéré et du milieu du fuseau de référence, l'aiguille 18 est déphasée par rapport à l'aiguille des heures 16, de manière à ce qu'elle affiche le temps solaire du lieu considéré.Thus, by bringing the hand 20 opposite a point on the dial 22 corresponding to the difference between the longitudes of the place considered and the middle of the reference time zone, the hand 18 is out of phase with respect to the hour hand 16 , so that it displays the solar time of the place considered.

Le renvoi 36 coopère avec un ressort sautoir non représenté au dessin et ajusté de manière à ce qu'il ne puisse pas tourner sous l'effet du couple engendré par la roue 28 sur la roue 32.The reference 36 cooperates with a jumper spring not shown in the drawing and adjusted so that it cannot rotate under the effect of the torque generated by the wheel 28 on the wheel 32.

La correction de l'équation du temps est réalisée au moyen d'une roue 40, effectuant un tour en 365¼ jours et portant une came d'équation du temps 42, et munie d'un pivot 40a sur lequel l'aiguille 23 est chassée.The correction of the equation of time is carried out by means of a wheel 40, making a revolution in 365¼ days and carrying a cam of equation of time 42, and provided with a pivot 40a on which the needle 23 is driven .

La roue 40 comporte avantageusement 487 dents. Elle est entraînée en rotation par un cliquet 44 effectuant un mouvement de va-et-vient et commandé par une came portée par une roue reliée au rouage de finissage et effectuant un tour en 18 heures. Sur le dessin, ni la came, ni la roue ne sont représentées, leur réalisation étant évidente pour l'homme du métier.
La came 42 coopère avec un doigt 38a que comporte la bascule 38. Ce doigt 38a est maintenu en appui contre la came 42 par un ressort 46 fixé sur la platine 26. De la sorte, la bascule 38 se déplace lentement, en appui contre la came 42, corrigeant ainsi l'équation du temps.The wheel 40 advantageously has 487 teeth. It is rotated by a pawl 44 performing a back-and-forth movement and controlled by a cam carried by a wheel connected to the gear train and performing one revolution in 18 hours. In the drawing, neither the cam nor the wheel are shown, their realization being obvious to those skilled in the art.
The cam 42 cooperates with a finger 38a that comprises the rocker 38. This finger 38a is held in abutment against the cam 42 by a spring 46 fixed on the plate 26. In this way, the rocker 38 moves slowly, in abutment against the cam 42, thus correcting the equation of time.

Le cadran 22 est fixé rigidement sur la bascule 38, par des moyens qui n'ont pas été représentés, de telle sorte qu'il suit le mouvement de cette bascule. Il comporte un index 22a permettant d'afficher l'équation du temps, en référence à une échelle 13a du cadran 13.The dial 22 is rigidly fixed on the rocker 38, by means which have not been shown, so that it follows the movement of this rocker. It includes an index 22a making it possible to display the equation of time, with reference to a scale 13a of the dial 13.

La montre décrite permet donc d'afficher avec précision le temps solaire, dans la mesure où la longitude du lieu est connue, en prenant en compte et en affichant de manière simple l'équation du temps.The watch described therefore makes it possible to display solar time with precision, as far as the longitude of the place is known, by taking into account and by simply displaying the equation of time.

Elle permet aussi de déterminer avec précision la direction du nord. Il suffit d'orienter l'aiguille de temps solaire 18 en direction du soleil, en tournant la montre de manière à ce que l'index 18b porte une ombre au centre de la pastille 18c. Le nord se trouve alors dans la direction de l'index 13b que porte le cadran 13 dans la position qu'occupe l'aiguille 18 lorsqu'il est minuit de temps solaire.It also makes it possible to precisely determine the direction of the north. It suffices to orient the solar time hand 18 in the direction of the sun, by turning the watch so that the index 18b bears a shadow in the center of the patch 18c. The north is then in the direction of the index 13b carried by the dial 13 in the position occupied by the hand 18 when it is midnight of solar time.

La figure 4 représente une montre selon un deuxième mode de réalisation. On y retrouve la boîte 10 dans laquelle est logé un mouvement qui entraîne des moyens d'affichage. Le mouvement porte le premier cadran 12, muni d'une échelle douze heures, le deuxième cadran 13 et les aiguilles de minutes 14, des heures de temps civil 16 qui fait un tour en douze heures, et de temps solaire 18 qui fait un tour en vingt-quatre heures.FIG. 4 represents a watch according to a second embodiment. There is the box 10 in which is housed a movement which drives display means. The movement carries the first dial 12, fitted with a twelve-hour scale, the second dial 13 and the minute hands 14, hours of civil time 16 which turns around in twelve hours, and solar time 18 which turns around in twenty-four hours.

Dans cette montre, le cadran 13 est agencé de manière à pouvoir tourner en référence au cadran 12 et être déplacé angulairement par la couronne de mise à l'heure 24. L'entraînement par la couronne 24 peut, par exemple, se faire en première position tirée, au moyen d'un mécanisme bien connu de l'homme du métier.In this watch, the dial 13 is arranged so that it can rotate with reference to the dial 12 and be angularly displaced by the time-setting crown 24. The drive by the crown 24 can, for example, be done first pulled position, by means of a mechanism well known to those skilled in the art.

Le cadran 12 porte un index 12a dans la position par laquelle passe l'aiguille des heures 16 à minuit et à midi, alors que le cadran 13 porte une échelle 13a en regard de l'index 12a, ainsi qu'une flèche 13b disposée de manière à ce qu'elle soit superposée à l'aiguille 18 lorsqu'il est minuit de temps solaire, indiquant le nord quand l'aiguille 18 est orientée vers le soleil.The dial 12 carries an index 12a in the position through which the hour hand 16 passes at midnight and at noon, while the dial 13 carries a scale 13a opposite the index 12a, as well as an arrow 13b arranged at so that it is superimposed on the hand 18 when it is midnight of solar time, indicating north when the hand 18 is oriented towards the sun.

En variante, le cadran 13 pourrait être remplacé par une bague tournante montée sur la boîte 10 autour de la glace. Dans ce cas, la lunette peut être directement tournée, sans faire intervenir la couronne et le mécanisme de correction.As a variant, the dial 13 could be replaced by a rotating ring mounted on the box 10 around the crystal. In this case, the bezel can be turned directly, without involving the crown and the correction mechanism.

L'échelle 13a permet d'ajuster la position du cadran 13 en fonction de la longitude du lieu considéré, en l'orientant de manière à ce que la valeur se trouvant en regard de l'index 12a soit égale au décalage de longitude entre le lieu considéré et le milieu du fuseau horaire.The scale 13a makes it possible to adjust the position of the dial 13 as a function of the longitude of the place considered, by orienting it so that the value located opposite the index 12a is equal to the longitude offset between the location and the middle of the time zone.

Cette montre ne prend en compte que le décalage dû à la longitude. Il est aussi possible de la compléter, avec une correction de l'équation du temps, par un mécanisme similaire à celui décrit en référence à la figure 3. Dans ce cas, toutefois, la roue 32 est fixe et le pignon 36 engrène avec une denture que comporte le cadran 13, qui serait alors déplacé par une rotation de la couronne 14, et par le mouvement de la bascule 38 en appui contre la came 40.This watch only takes into account the offset due to longitude. It is also possible to complete it, with a correction of the equation of time, by a mechanism similar to that described with reference to FIG. 3. In this case, however, the wheel 32 is fixed and the pinion 36 meshes with a toothing that comprises the dial 13, which would then be displaced by a rotation of the crown 14, and by the movement of the lever 38 pressing against the cam 40.

La montre représentée à la figure 5 correspond à un troisième mode de réalisation. Elle est munie d'un mouvement disposé dans une boîte 10 et qui sera décrit en référence à la figure 6. Comme les deux modes de réalisation décrits précédemment, cette montre est équipée de l'aiguilles des minutes 14 et des heures 16 de temps civil, l'aiguille 20 et le cadran 22 de longitude, l'aiguille 23 d'écliptique, ainsi que de la couronne de mise à l'heure 24.The watch shown in Figure 5 corresponds to a third embodiment. It is provided with a movement arranged in a box 10 and which will be described with reference to FIG. 6. Like the two embodiments described above, this watch is equipped with the 14 minute and 16 hour hands for civil time , the hand 20 and the longitude dial 22, the ecliptic hand 23, as well as the time-setting crown 24.

Dans cette montre, la lecture de l'heure civile se fait sur un cadran annulaire 48 muni d'une échelle de douze heures, qui sert de référence aux aiguilles 14 et 16. L'affichage du temps solaire est réalisé au moyen d'une aiguille 50, effectuant un tour en douze heures, et d'un disque central 52, entraîné en synchronisme avec l'aiguille 50 et effectuant un tour en vingt-quatre heures.In this watch, the calendar time is read on an annular dial 48 provided with a twelve-hour scale, which serves as a reference for hands 14 and 16. The display of the solar time is carried out by means of a needle 50, performing one revolution in twelve hours, and a central disc 52, driven in synchronism with the needle 50 and performing one revolution in twenty-four hours.

Le disque 52 porte un index 52a, qui indique le nord lorsque l'aiguille de temps solaire 50 vise le soleil. L'aiguille 50 peut, en outre être munie d'un organe de visée tel que défini en référence aux figures 1 et 2. Il n'a, toutefois, pas été représenté sur la figure 5.The disc 52 carries an index 52a, which indicates the north when the solar time hand 50 is aimed at the sun. The needle 50 may also be provided with a sighting member as defined with reference to FIGS. 1 and 2. It has not, however, been shown in FIG. 5.

Le mouvement représenté sur la figure 6 est destiné à équiper la montre de la figure 5. On y retrouve la platine 26, la roue à canon 28 destinée à porter l'aiguille des heures 16, le déphaseur 34, le renvoi 36, la bascule 38 et la roue 40 portant la came d'équation du temps 42 et entraînée par le cliquet 44. La bascule 38 est également maintenue en appui contre la came 42 par le ressort 46.The movement shown in Figure 6 is intended to equip the watch of Figure 5. There is the plate 26, the barrel wheel 28 for carrying the hour hand 16, the phase shifter 34, the gear 36, the rocker 38 and the wheel 40 carrying the time equation cam 42 and driven by the pawl 44. The rocker 38 is also held in abutment against the cam 42 by the spring 46.

Ce mouvement comporte, en outre, une première roue solaire centrale 54, superposée à la roue 28 et de même diamètre, une deuxième roue solaire 56, coaxiale aux roues 28 et 54. Un satellite 58, engrenant à la fois avec la roue 28 et la roue 54, est monté pivotant sur le déphaseur 34, lequel porte, en outre un mobile 60, qui est entraîné par la roue 54 et mène la roue 56. Le réglage du déphasage entre l'heure solaire et l'heure civil se fait de manière identique à ce qui a été décrit en référence aux figures 1 et 3, ainsi que la correction de l'équation du temps. Les roues solaires 56 et 58 sont respectivement destinée à porter l'aiguille 50 et le disque 52.This movement further comprises a first central solar wheel 54, superimposed on the wheel 28 and of the same diameter, a second solar wheel 56, coaxial with the wheels 28 and 54. A satellite 58, meshing with both the wheel 28 and the wheel 54, is pivotally mounted on the phase shifter 34, which carries, in addition a mobile 60, which is driven by the wheel 54 and drives the wheel 56. The adjustment of the phase shift between the solar time and the civil time is done identically to what has been described with reference to Figures 1 and 3, as well as the correction of the equation of time. The solar wheels 56 and 58 are respectively intended to carry the needle 50 and the disc 52.

Dès lors que les roues 28 et 54 ont le même diamètre, et qu'elles sont reliées cinématiquement par le satellite 58, elles tournent dans le même sens et à la même vitesse tant que le déphaseur 34 est fixe.As soon as the wheels 28 and 54 have the same diameter, and they are kinematically connected by the satellite 58, they rotate in the same direction and at the same speed as long as the phase shifter 34 is fixed.

Le mobile 60 et la roue 56 comportent des nombres de dents choisis de manière à ce que la roue 56 tourne deux fois plus lentement que la roue 54, c'est-à-dire qu'elle fasse un tour en vingt-quatre heures.The mobile 60 and the wheel 56 have numbers of teeth chosen so that the wheel 56 rotates twice as slowly as the wheel 54, that is to say that it makes one revolution in twenty-four hours.

Dans ce mode de réalisation, l'affichage du temps solaire se fait sur l'échelle de douze heures, qui est plus habituelle - et donc plus facile à lire - que celle de vingt-quatre heures.In this embodiment, the display of solar time is done on the twelve-hour scale, which is more usual - and therefore easier to read - than that of twenty-four hours.

Les trois modes de réalisation décrits ci-dessus permettent de déterminer la direction du nord en un lieu donné, dans la mesure où l'on connaît la longitude de ce lieu, en orientant l'aiguille 18 ou 50 en direction du Soleil. Il est également possible de déterminer la longitude du lieu considéré en notant, de nuit et sur une surface fixe, la direction de l'étoile polaire, qui correspond au nord géographique. Le jour suivant, on oriente la montre de manière à ce que l'index indiquant le nord coïncide avec la direction notée. Il suffit ensuite de corriger l'indicateur de longitude jusqu'à ce que l'aiguille 18 vise le Soleil.The three embodiments described above make it possible to determine the direction of the north at a given place, insofar as the longitude of this place is known, by orienting the needle 18 or 50 in the direction of the Sun. It is also possible to determine the longitude of the place considered by noting, at night and on a fixed surface, the direction of the North Star, which corresponds to geographic north. The next day, we orient the watch so that the index indicating north coincides with the noted direction. Then just correct the longitude indicator until the needle 18 is aimed at the Sun.

Les montres ainsi décrites permettent donc, par des moyens techniques simples et faciles à manipuler, d'afficher, à la fois, le temps civil et le temps solaire, et de déterminer la direction du nord géographique ou encore la longitude du lieu considéré. Ces montres peuvent, bien sûr, faire l'objet de nombreuses autres variantes, sans pour autant sortir du cadre de l'invention. Elles peuvent ainsi comporter ou non une correction relative à l'équation du temps. Les mécanismes destinés à assurer le déphasage entre le temps solaire et le temps civil, en fonction de la longitude et de l'équation du temps peuvent, bien entendu, présenter des structures et des formes bien différentes. Ainsi, la roue 40 pourrait aussi être associé à un mécanisme de calendrier classique, affichant le quantième et le mois, la came d'équation du temps étant commandée par le mobile portant l'indicateur de mois.The watches thus described therefore make it possible, by simple and easy-to-handle technical means, to display both civil time and solar time, and to determine the direction of geographic north or the longitude of the place considered. These watches can, of course, be the subject of many other variants, without going beyond the ambit of the invention. They may or may not therefore include a correction relating to the equation of time. The mechanisms intended to ensure the phase shift between solar time and civil time, as a function of the longitude and the equation of time can, of course, have very different structures and shapes. Thus, the wheel 40 could also be associated with a conventional calendar mechanism, displaying the calendar and the month, the time equation cam being controlled by the mobile carrying the month indicator.

La description ci-dessus se rapporte à une montre de type mécanique. Il est aussi possible d'envisager des solutions faisant appel à un affichage par des moyens autres que des aiguilles, par exemple des cellules d'affichage à cristaux liquides. Dans ce cas, la base de temps sera un quartz. Pour que cette pièce puisse aussi déterminer la direction du nord géographique, au moins le temps solaire sera affiché au moyen d'une aiguille simulée par des index disposés radialement sur la cellule d'affichage.The above description relates to a mechanical type watch. It is also possible to envisage solutions using a display by means other than needles, for example liquid crystal display cells. In this case, the time base will be a quartz. So that this piece can also determine the direction of geographic north, at least the solar time will be displayed by means of a hand simulated by indexes arranged radially on the display cell.

Claims (9)

Montre comportant des moyens d'affichage du temps civil (12, 16 ; 48), des moyens d'affichage du temps solaire (13, 18 ; 50, 52) et des moyens de correction (24), 34, 36) desdits affichages, caractérisée en ce que lesdits moyens de correction sont agencés de manière à permettre le déphasage relatif des moyens d'affichage du temps civil et du temps solaire, et en ce qu'elle comporte, en outre, des moyens d'affichage dudit déphasage (20, 22 ; 13a).Watch comprising means for displaying civil time (12, 16; 48), means for displaying solar time (13, 18; 50, 52) and means for correcting (24), 34, 36) of said displays , characterized in that said correction means are arranged so as to allow the relative phase shift of the means for displaying the civil time and the solar time, and in that it further comprises means for displaying said phase shift ( 20, 22; 13a). Montre selon la revendication 1, caractérisée en ce que les moyens d'affichage du temps solaire comportent une aiguille de temps solaire (18) effectuant un tour en vingt-quatre heures.Watch according to claim 1, characterized in that the means for displaying the solar time comprise a solar time hand (18) performing one revolution in twenty-four hours. Montre selon la revendication 1, caractérisée en ce que les moyens d'affichage du temps solaire comportent, une aiguille de temps solaire effectuant un tour en douze heures (50) et un disque (52) effectuant un tour en vingt-quatre heures, entraîné en synchronisme avec ladite aiguille (50) et portant un index (52a), indiquant le nord disposée de manière à ce que l'aiguille (50) et l'index (52a) soient superposées lorsque l'aiguille (50) affiche minuit.Watch according to claim 1, characterized in that the means for displaying the solar time comprise, a solar time hand performing one revolution in twelve hours (50) and a disc (52) performing one revolution in twenty-four hours, driven in synchronism with said hand (50) and carrying an index (52a), indicating the north arranged so that the hand (50) and the index (52a) are superimposed when the hand (50) displays midnight. Montre selon la revendication 2, caractérisée en ce que : - les moyens d'affichage du temps civil comportent une aiguille des heures (16) effectuant un tour en douze heures et un premier cadran (12), fixe, dont la partie supérieure correspond à l'affichage de midi et minuit, - les moyens d'affichage du temps solaire comprennent un deuxième cadran (13), fixe, indiquant vingt-quatre heures sur un tour, dont la partie supérieure correspond à l'affichage de minuit, - les moyens de correction comportent un déphaseur (34) disposé entre les moyens d'affichage du temps civil et les moyens d'affichage du temps solaire et permettant de déphaser l'aiguille de temps solaire (18) en référence à l'aiguille des heures (16), et - ledit déphaseur (34) est muni de moyens d'affichage (20, 22), pour indiquer le déphasage que présente l'aiguille de temps solaire (18) par rapport à l'aiguille de temps civil (16). Watch according to claim 2, characterized in that : the means for displaying the civil time comprise an hour hand (16) making one revolution in twelve hours and a first, fixed dial (12), the upper part of which corresponds to the display of noon and midnight, the means for displaying the solar time include a second, fixed dial (13) indicating twenty-four hours on a lap, the upper part of which corresponds to the midnight display, - the correction means comprise a phase shifter (34) disposed between the means for displaying the civil time and the means display of the solar time and making it possible to phase-shift the solar time hand (18) with reference to the hour hand (16), and - Said phase shifter (34) is provided with display means (20, 22), to indicate the phase shift that presents the solar time hand (18) with respect to the civil time hand (16). Montre selon la revendication 2, caractérisée en ce que : - les moyens d'affichage du temps civil comportent une aiguille des heures (16) effectuant un tour en douze heures et un premier cadran (12), fixe, dont la partie supérieure correspond à l'affichage de midi et minuit, - les moyens d'affichage du temps solaire comprennent un deuxième cadran (13), mobile en rotation, indiquant vingt-quatre heures sur un tour, dont la partie supérieure correspond à l'affichage de minuit, - les moyens de correction (24) sont agencés pour permettre la rotation du deuxième cadran (13) en référence au premier cadran, de manière à déphaser leurs échelles, et - le premier et le deuxième cadran comporte l'un un index (12a) et l'autre une échelle (13a) pour permettre l'ajustement du déphasage. Watch according to claim 2, characterized in that : the means for displaying the civil time comprise an hour hand (16) making one revolution in twelve hours and a first, fixed dial (12), the upper part of which corresponds to the display of noon and midnight, the means for displaying the solar time comprise a second dial (13), movable in rotation, indicating twenty-four hours on one revolution, the upper part of which corresponds to the midnight display, the correction means (24) are arranged to allow the rotation of the second dial (13) with reference to the first dial, so as to phase their scales, and - The first and the second dial includes one an index (12a) and the other a scale (13a) to allow the adjustment of the phase shift. Montre selon l'une des revendications 4 et 5, caractérisée en ce que le deuxième cadran (13) porte un index (13b), disposé de manière à ce qu'il soit superposé à ladite aiguille (18) lorsque celle-ci affiche minuit, de telle sorte que ledit index (13b) montre le nord géographique lorsque ladite aiguille (18) vise le soleil.Watch according to one of claims 4 and 5, characterized in that the second dial (13) carries an index (13b), arranged so that it is superimposed on said hand (18) when the latter displays midnight , so that said index (13b) shows geographic north when said needle (18) is aimed at the sun. Montre selon l'une des revendications 2 à 6, caractérisée en ce que l'aiguille de temps solaire (18, 50) comporte un organe de visée pour permettre son orientation en direction du soleil, comprenant un corps (18a) fixé à un mobile de la montre, un index (18b) s'étendant au-dessus du corps (18a), et une cible (18c), solidaire du corps (18a) et sur laquelle l'ombre de l'index (18b) peut être projetée.Watch according to one of claims 2 to 6, characterized in that the solar time hand (18, 50) comprises an aiming member to allow its orientation towards the sun, comprising a body (18a) fixed to a mobile of the watch, an index (18b) extending above the body (18a), and a target (18c), integral with the body (18a) and on which the shadow of the index (18b) can be projected . Montre selon l'une revendications 1 à 7, caractérisée en ce qu'elle comporte, en outre, des moyens de correction (38, 40, 42) de l'équation du temps.Watch according to one of claims 1 to 7, characterized in that it also comprises means (38, 40, 42) for correcting the equation of time. Montre selon la revendication 8, caractérisé en ce que les moyens de correction de l'équation du temps (38, 40, 42) comprennent des moyens d'affichage (23) de la position de la terre sur l'écliptique.Watch according to claim 8, characterized in that the means for correcting the time equation (38, 40, 42) comprise means (23) for displaying the position of the earth on the ecliptic.
EP02405177A 2002-03-08 2002-03-08 Wristwatch with solar time display Withdrawn EP1343056A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP02405177A EP1343056A1 (en) 2002-03-08 2002-03-08 Wristwatch with solar time display
DE60332431T DE60332431D1 (en) 2002-03-08 2003-03-05 CLOCK WITH SUNSET INDICATOR
PCT/CH2003/000152 WO2003077043A2 (en) 2002-03-08 2003-03-05 Watch comprising a solar time display
AT03702275T ATE467157T1 (en) 2002-03-08 2003-03-05 CLOCK WITH SUN TIME DISPLAY
US10/506,922 US7372781B2 (en) 2002-03-08 2003-03-05 Watch comprising a solar time display
EP03702275A EP1483630B1 (en) 2002-03-08 2003-03-05 Watch comprising a solar time display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02405177A EP1343056A1 (en) 2002-03-08 2002-03-08 Wristwatch with solar time display

Publications (1)

Publication Number Publication Date
EP1343056A1 true EP1343056A1 (en) 2003-09-10

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP02405177A Withdrawn EP1343056A1 (en) 2002-03-08 2002-03-08 Wristwatch with solar time display
EP03702275A Expired - Lifetime EP1483630B1 (en) 2002-03-08 2003-03-05 Watch comprising a solar time display

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP03702275A Expired - Lifetime EP1483630B1 (en) 2002-03-08 2003-03-05 Watch comprising a solar time display

Country Status (5)

Country Link
US (1) US7372781B2 (en)
EP (2) EP1343056A1 (en)
AT (1) ATE467157T1 (en)
DE (1) DE60332431D1 (en)
WO (1) WO2003077043A2 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2852701A1 (en) * 2003-03-20 2004-09-24 Jean Louis Moulard Time device e.g. clock, pendulum, and watch, for indicating legal and solar time, has needle indicating legal time in external dial and mean solar time in internal dial, where dials are adjustable with respect to each other
EP1637942A1 (en) * 2004-09-15 2006-03-22 Frédéric Piguet S.A. Calender timepiece comprising an equation-of-time device
EP1637941A1 (en) * 2004-09-15 2006-03-22 Frédéric Piguet S.A. Calendar timepiece comprising an equation-of-time device
EP1701226A1 (en) * 2005-03-11 2006-09-13 The British Masters SA Clockwork
EP2187272A1 (en) * 2008-11-12 2010-05-19 Noriah SA Device for timepiece display
WO2013127681A1 (en) * 2012-02-27 2013-09-06 Blancpain Sa Universal running equation of time mechanism, and method for setting such a mechanism
EP2778800A1 (en) * 2013-03-12 2014-09-17 Blancpain SA. Universal running equation of time mechanism and method for adjusting such a mechanism
EP3029531A1 (en) * 2014-12-02 2016-06-08 Blancpain SA. Device for displaying periods forming an annual cycle
EP2009392B1 (en) * 2007-06-25 2016-08-10 Louis Vuitton Malletier Orientation watch
CN106483828A (en) * 2015-09-02 2017-03-08 卡西欧计算机株式会社 Analog display unit

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2503412B1 (en) * 2011-03-23 2013-08-28 Montres Breguet SA Uhrwerk, das eine Vorrichtung mit fortschreitender Zeitgleichung umfasst
US8540382B1 (en) 2012-06-28 2013-09-24 Donald E. Hultberg Spherical mechanical linkage and multi-axis trackers
US8979286B2 (en) 2012-06-28 2015-03-17 Donald E. Hultberg Spherical mechanical linkage and multi-axis trackers
EP3333639A1 (en) * 2016-12-08 2018-06-13 Montres Breguet S.A. Running time equation mechanism controlled by a differential device
EP3540523B1 (en) * 2018-03-13 2023-04-26 Montres Jaquet Droz SA Watch comprising a watch case having two dials
CN115427896A (en) 2020-04-22 2022-12-02 欧洲航天局 Electronic watch for space and/or surface exploration

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1459710A (en) * 1919-05-24 1923-06-26 Samuel W Balch Combined sidereal and mean solar timepiece
US5184333A (en) * 1991-04-17 1993-02-02 Montres Breguet S.A. Clock movement

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US518433A (en) 1894-04-17 Self acting mule and twineb
CH673747B5 (en) * 1988-11-15 1990-10-15 Longines Montres Comp D
EP1286233B1 (en) 2001-08-07 2008-01-23 Piguet, Frédéric S.A. Calendar timepiece comprising an equation-of-time device
CH696218A5 (en) * 2001-08-07 2007-02-15 Piguet Frederic Sa Timepiece in calendar including a running equation of time device.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1459710A (en) * 1919-05-24 1923-06-26 Samuel W Balch Combined sidereal and mean solar timepiece
US5184333A (en) * 1991-04-17 1993-02-02 Montres Breguet S.A. Clock movement

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2852701A1 (en) * 2003-03-20 2004-09-24 Jean Louis Moulard Time device e.g. clock, pendulum, and watch, for indicating legal and solar time, has needle indicating legal time in external dial and mean solar time in internal dial, where dials are adjustable with respect to each other
WO2004086153A2 (en) * 2003-03-20 2004-10-07 Jean-Louis Moulard Timepiece which indicates standard time
WO2004086153A3 (en) * 2003-03-20 2005-02-03 Jean-Louis Moulard Timepiece which indicates standard time
EP1637942A1 (en) * 2004-09-15 2006-03-22 Frédéric Piguet S.A. Calender timepiece comprising an equation-of-time device
EP1637941A1 (en) * 2004-09-15 2006-03-22 Frédéric Piguet S.A. Calendar timepiece comprising an equation-of-time device
WO2006029721A1 (en) * 2004-09-15 2006-03-23 Frederic Piguet S.A. Timepiece displaying the day of the month comprising a device for a running time equation
WO2006095003A3 (en) * 2005-03-11 2006-11-30 British Masters Sa Timepiece movement
WO2006095003A2 (en) * 2005-03-11 2006-09-14 The British Masters Sa Timepiece movement
EP1701226A1 (en) * 2005-03-11 2006-09-13 The British Masters SA Clockwork
EP2009392B1 (en) * 2007-06-25 2016-08-10 Louis Vuitton Malletier Orientation watch
EP2187272A1 (en) * 2008-11-12 2010-05-19 Noriah SA Device for timepiece display
WO2013127681A1 (en) * 2012-02-27 2013-09-06 Blancpain Sa Universal running equation of time mechanism, and method for setting such a mechanism
US9261859B2 (en) 2012-02-27 2016-02-16 Blancpain Sa Universal running equation of time mechanism and method of setting the same
EP2778800A1 (en) * 2013-03-12 2014-09-17 Blancpain SA. Universal running equation of time mechanism and method for adjusting such a mechanism
US9285774B2 (en) 2013-03-12 2016-03-15 Blancpain Sa Universal running equation of time mechanism and method of setting the same
EP3029531A1 (en) * 2014-12-02 2016-06-08 Blancpain SA. Device for displaying periods forming an annual cycle
US9594348B2 (en) 2014-12-02 2017-03-14 Blancpain Sa Device for the display of periods forming an annual cycle
CN106483828A (en) * 2015-09-02 2017-03-08 卡西欧计算机株式会社 Analog display unit

Also Published As

Publication number Publication date
DE60332431D1 (en) 2010-06-17
EP1483630B1 (en) 2010-05-05
WO2003077043A3 (en) 2004-05-13
ATE467157T1 (en) 2010-05-15
EP1483630A2 (en) 2004-12-08
WO2003077043A2 (en) 2003-09-18
US7372781B2 (en) 2008-05-13
US20050207283A1 (en) 2005-09-22

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