EP1701226A1 - Uhrwerk - Google Patents

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Publication number
EP1701226A1
EP1701226A1 EP05405242A EP05405242A EP1701226A1 EP 1701226 A1 EP1701226 A1 EP 1701226A1 EP 05405242 A EP05405242 A EP 05405242A EP 05405242 A EP05405242 A EP 05405242A EP 1701226 A1 EP1701226 A1 EP 1701226A1
Authority
EP
European Patent Office
Prior art keywords
mobile
hours
time
revolution
performs
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Withdrawn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
EP05405242A
Other languages
English (en)
French (fr)
Inventor
Eric 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 EP05405242A priority Critical patent/EP1701226A1/de
Priority to EP06708698A priority patent/EP1866708B1/de
Priority to PCT/EP2006/060578 priority patent/WO2006095003A2/fr
Priority to DE602006014520T priority patent/DE602006014520D1/de
Publication of EP1701226A1 publication Critical patent/EP1701226A1/de
Withdrawn legal-status Critical Current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
    • G04B19/26—Clocks or watches with indicators for tides, for the phases of the moon, or the like
    • G04B19/262—Clocks or watches with indicators for tides, for the phases of the moon, or the like with indicators for astrological informations
    • 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
    • G04B19/235—Arrangements for indicating different local apparent times; Universal time pieces by means of additional hands or additional pairs of hands mechanisms for correcting the additional hand or hands

Definitions

  • the present invention relates to the field of watchmaking, and more particularly movements for timepieces of the type for determining the true north or north geographic, especially during the transition to the meridian.
  • the watch movement described in the document FR 2,696,016 allows such determination. It has a hand of hours making a turn in twenty-four hours. To be able to determine the north direction, it is explained that the watch must be set to local solar time. In these conditions and if the hour hand is oriented towards the sun, then the top of the dial indicates the geographical north. In order to be able to make a precise measurement at any time, the wearer must live in the local solar time or perform manipulations each time leading to the loss of the civil time.
  • the document DE 36 31 513 describes a watch with a first hour hand performing a turn in twelve hours and a second performing a turn in twenty-four hours.
  • the second hour hand allows, in principle, to determine the geographical north.
  • the difference between the civil time and the solar time makes this indication can be precise. Indeed, the offset between these two times can greatly exceed one hour, which represents an error of more than 15 °.
  • the movement for a timepiece comprises a control device and a timer train equipped with first and second mobiles arranged to respectively carry first and second hour indicators, in which these mobiles are connected. kinematically to one another and to the control device, the timer train being arranged so that the second mobile performs a turn in twenty-four hours.
  • the timer train and the control device are arranged so that, by an action on the control device, the second mobile can be rotated in a progressive manner, without affecting the position of the first one. mobile, and so that during the training of the latter, the second mobile is simultaneously driven in synchronism with the first mobile.
  • control device comprises a time setting rod which can occupy three positions, one of rest and first and second drawn positions. It is arranged so that a rotation of the rod rotates the second mobile only in the first drawn position, while it rotates the first and second mobile simultaneously and in synchronism in second position pulled.
  • a disengagement device advantageously formed of a friction or a clutch, is inserted in the kinematic chain which connects them.
  • the timer train comprises a third mobile, kinematically connected desmodromically to the first mobile and a fourth mobile connected kinematically and desmodromic way to the second mobile.
  • the timer train is arranged so that the third mobile performs one revolution per hour and can carry a minute hand of civil time, and so that the fourth mobile is driven by a higher speed than the second. mobile, for example one revolution per hour or twelve hours, to facilitate the adjustment of solar time with reference to civil time.
  • the present invention also relates to a timepiece provided with such a movement.
  • this disc also bears an angular scale and makes it possible to adjust the position of the hand of the hours of solar time with reference to the longitude of the place considered.
  • the disc and the hour hand of civil time have scales arranged facing one another and dimensioned so as to form together a vernier. In this way, the measurement of the difference between solar time and civil time can be more precise.
  • the second mobile carries a solar time hand performing a turn in twenty-four hours and the fourth mobile a solar time hand performing a turn in twelve hours. In this way, by directing towards the sun the needle carried by the fourth mobile, that carried by the second mobile indicates the geographical north.
  • the watch shown in FIGS. 1 and 2 comprises a box 10, a dial 12 and solar time hour hands 14, civil time hours 16 and civil time minutes 18.
  • the solar time hour hand 14 performs one revolution in twenty-four hours, the one of the civil time hours 16 a turn in twelve hours, while the minute hand of the civil time minutes on the one hand , the record 20 minutes of solar time on the other hand make one turn per hour.
  • the movement according to the invention is, furthermore, provided with a time setting mechanism arranged so that, in a first position drawn from the rod, a rotation of the ring 22 causes the needle to rotate. solar time 14 and the disc 20, the position of the needles 16 and 18 not being influenced. In the second drawn position, a rotation of the ring 22 has the effect of driving both the needle 14 and the disk 20 as the needles 16 and 18.
  • the mechanism providing these functions will not be described because it equips most movements of modern watches equipped with both mechanical and electronic hands. Usually, however, the first drawn position corrects the date display. This difference does not change the general structure of this mechanism.
  • the movement equipping the watch of FIG. 1 comprises a frame schematically represented, and including in particular a plate 24 and a ring 25 for complementary module, which is fixed on the plate 24.
  • the frame carries the various moving parts including a timer wheel 26 disposed on its adjoining part to the dial 12 and a work train, one of the mobiles, bearing the reference 28, is disposed at the center of the movement and performs a turn in one hour.
  • the number of teeth in the moving wheels of the timer wheel 26 is selected so that the mobile of the civilian time hours 34 makes a turn in twelve hours, the barrel of the barrel wheel 34a carrying the needle 16.
  • the mobile time of solar time 36 carries the needle 14.
  • the pinion 34b of the mobile of the civil time hours 34, the intermediate mobile 40, and the mobile 36 comprise numbers of teeth chosen so that the mobile 36 is made a turn in twenty-four hours. In this way, the needle 18, perform one turn per day.
  • the intermediate mobile 40 and the timer 41 are respectively pivotally mounted on pins 42 and 43 integral with the ring 25.
  • a wheel 44 engaged with the solar time timer 41 is connected to the time control so that when the ring 22 occupies its first position pulled and turning, the wheel 44 drives the timer 41 and with it, the mobiles 36 and 38, and the wheel 40b, without the wheel 40a rotates because of the friction 40c.
  • the ring 22 If the ring 22 is in the second drawn position, its rotation causes the timer 32 and, with it, the floor 30, the mobile 34, 40, 36, 41 and 38. In this case, the friction 40c is not requested and both the civilian time hands 16 and 18 as the solar time hand 14 and the disc 20 rotate in synchronism.
  • the watch thus defined makes it possible to determine the position of the geographic north if the longitude of the place is known, or to determine the longitude if the north is known.
  • the wearer To determine the direction of the geographic north, the wearer begins by adjusting the solar time of his watch in the first position drawn from the crown 22. It can do so from the time given to it by a sundial. It brings the hour hand 14 to the position corresponding to the instantaneous solar time and, if the accuracy is sufficient, it can further refine the information by means of the disk 20, by bringing the index 20a into the position corresponding to the minute of solar time.
  • the solar time it is also possible to set the solar time by knowing the longitude and time zone of the location where the wearer is. If the latter is on the median meridian of the spindle, ie at 15 ° East or West, where "n" is the time zone number, the minutes of solar time are equal to minutes of civilian time, at least in the first approximation. If the longitude of the place is less than that of the median meridian, the solar time must be corrected negatively.
  • the solar time is to shift compared to the civil time of 32 minutes and 40 seconds.
  • This result is obtained by multiplying by four the angular displacement between the median meridian and the meridian of the place, expressed in degrees and minutes, the result being expressed in minutes and seconds, since 15 ° corresponds to a time difference of 60 minutes.
  • the reading of this difference, on the disk 20, can be done in angular values (degrees of angle), which appear on an outer circle, or in time units marked on an inner circle, by aligning the index 20a with reference at the minute hand 18.
  • the latter directs the dial so that the midnight is turned towards the geographical north, then he turns the hour hand 14 to align it on the sun.
  • the angular offset between hands 14 and 16 gives the angle between the median meridian of the time zone and the longitude of the place. In the embodiment described above, this angle is defined by the position of the needle 18 on the disk 20.
  • the timepiece comprises, like that illustrated in FIGS. 1 and 2, a box 10, a dial 12, hour hands 16 and minutes 18 of civil time and a crown 22. It comprises, in besides, two needles solar time hours 46 and 48 making a turn respectively twelve and twenty-four hours.
  • the determination of the direction of the geographical north is done by directing the needle 46 towards the sun.
  • the north is in the direction indicated by the needle 48.
  • the movement equipping such a watch differs slightly from that shown in Figure 2. It has not been illustrated, since it can be easily made by the skilled person. It suffices, indeed, that the wheel carrying the needle 46 is connected to the wheel 34 by the wheel 40, the two wheels 40a and 40b having the same number of teeth.
  • the wheel bearing the needle 46 is connected to that carrying the needle 48 by a gear reduction unit dividing the speed by a factor of 2.
  • a disk 50 replaces the solar hour time hand 46. This disk thus performs a revolution in 12 hours. It is provided with an index 50a representing the sun and, if it is directed towards it, directs the watch so that the needle 48 indicates the geographical north. Furthermore, the needle 16 on the one hand, the disc 50 on the other hand, are provided with scales 52a and 52b together forming a vernier 52 which allows a precise adjustment of the shift between the civil and solar times. The movement used may be identical to that fitted to the watch of FIG.
  • the movement and the watches described may have many variants, without departing from the scope of the invention.
  • the solar time display could be limited to the needle 14. In this case, the accuracy of the setting would be reduced.
  • the friction could also be replaced by a clutch to isolate from one another the parts of the train relating to the display of civil time and solar time during the adjustment of the latter.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Electromechanical Clocks (AREA)
EP05405242A 2005-03-11 2005-03-11 Uhrwerk Withdrawn EP1701226A1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP05405242A EP1701226A1 (de) 2005-03-11 2005-03-11 Uhrwerk
EP06708698A EP1866708B1 (de) 2005-03-11 2006-03-09 Uhr
PCT/EP2006/060578 WO2006095003A2 (fr) 2005-03-11 2006-03-09 Mouvement pour piece d'horlogerie
DE602006014520T DE602006014520D1 (de) 2005-03-11 2006-03-09 Uhr

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05405242A EP1701226A1 (de) 2005-03-11 2005-03-11 Uhrwerk

Publications (1)

Publication Number Publication Date
EP1701226A1 true EP1701226A1 (de) 2006-09-13

Family

ID=35542627

Family Applications (2)

Application Number Title Priority Date Filing Date
EP05405242A Withdrawn EP1701226A1 (de) 2005-03-11 2005-03-11 Uhrwerk
EP06708698A Not-in-force EP1866708B1 (de) 2005-03-11 2006-03-09 Uhr

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP06708698A Not-in-force EP1866708B1 (de) 2005-03-11 2006-03-09 Uhr

Country Status (3)

Country Link
EP (2) EP1701226A1 (de)
DE (1) DE602006014520D1 (de)
WO (1) WO2006095003A2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2187272A1 (de) * 2008-11-12 2010-05-19 Noriah SA Anzeigevorrichtung für Uhr

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191502493A (en) * 1915-02-16 1916-02-10 Elis Stroemgren Watch or Clock for Indicating Simultaneously the Mean Solar Time and the Sidereal Time.
CH333987A (fr) * 1957-03-26 1958-11-15 Laager Alfred Montre à deux paires d'aiguilles
DE3631513A1 (de) 1986-09-12 1988-03-24 Ulrich Hamann Sonnenkompass
FR2696016A1 (fr) 1992-07-13 1994-03-25 Chatelain Jean Montre analogique à mouvement vingt quatre heures servant à l'orientation solaire.
US6141295A (en) * 1998-04-05 2000-10-31 Iwc International Watch Co. Ag Display setting arrangement for a timepiece
EP1271268A1 (de) * 2001-06-28 2003-01-02 Conseils et Manufactures VLG SA Uhr mit zwei Zeitzonen
EP1286233A1 (de) * 2001-08-07 2003-02-26 Piguet, Frédéric S.A. Kalenderuhr mit Äquationsvorrichtung
EP1343056A1 (de) * 2002-03-08 2003-09-10 The British Masters SA Uhr mit Sonnenzeitanzeige

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191502493A (en) * 1915-02-16 1916-02-10 Elis Stroemgren Watch or Clock for Indicating Simultaneously the Mean Solar Time and the Sidereal Time.
CH333987A (fr) * 1957-03-26 1958-11-15 Laager Alfred Montre à deux paires d'aiguilles
DE3631513A1 (de) 1986-09-12 1988-03-24 Ulrich Hamann Sonnenkompass
FR2696016A1 (fr) 1992-07-13 1994-03-25 Chatelain Jean Montre analogique à mouvement vingt quatre heures servant à l'orientation solaire.
US6141295A (en) * 1998-04-05 2000-10-31 Iwc International Watch Co. Ag Display setting arrangement for a timepiece
EP1271268A1 (de) * 2001-06-28 2003-01-02 Conseils et Manufactures VLG SA Uhr mit zwei Zeitzonen
EP1286233A1 (de) * 2001-08-07 2003-02-26 Piguet, Frédéric S.A. Kalenderuhr mit Äquationsvorrichtung
EP1343056A1 (de) * 2002-03-08 2003-09-10 The British Masters SA Uhr mit Sonnenzeitanzeige

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2187272A1 (de) * 2008-11-12 2010-05-19 Noriah SA Anzeigevorrichtung für Uhr

Also Published As

Publication number Publication date
WO2006095003A3 (fr) 2006-11-30
WO2006095003A2 (fr) 2006-09-14
EP1866708A2 (de) 2007-12-19
DE602006014520D1 (de) 2010-07-08
EP1866708B1 (de) 2010-05-26

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