EP1413934A1 - Uhr mit analoger Anzeigevorrichtung, die mit einer Tag-Nacht-Anzeigevorrichtung zusammenwirkt - Google Patents

Uhr mit analoger Anzeigevorrichtung, die mit einer Tag-Nacht-Anzeigevorrichtung zusammenwirkt Download PDF

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Publication number
EP1413934A1
EP1413934A1 EP02079402A EP02079402A EP1413934A1 EP 1413934 A1 EP1413934 A1 EP 1413934A1 EP 02079402 A EP02079402 A EP 02079402A EP 02079402 A EP02079402 A EP 02079402A EP 1413934 A1 EP1413934 A1 EP 1413934A1
Authority
EP
European Patent Office
Prior art keywords
hour hand
timepiece
time
disc
axis
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Withdrawn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
EP02079402A
Other languages
English (en)
French (fr)
Inventor
Gilomen Beat
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.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
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 ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP02079402A priority Critical patent/EP1413934A1/de
Publication of EP1413934A1 publication Critical patent/EP1413934A1/de
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/22—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 a timepiece comprising an analog time display arranged so that the hour hand makes one revolution in twelve hours.
  • the present invention relates to the display of the time of a second time zone different from the time zone in which the user of the timepiece is located.
  • the display of a second time zone using a hand performing a revolution in twelve hours poses the known problem of AM / PM or day-night determination relating to the time displayed.
  • One solution to this problem consists in providing for the display of the time of this second time zone by an hour hand performing one revolution in twenty-four hours.
  • an object of the present invention is to provide the indication of the local time in a second time zone using an hour hand performing one revolution in twelve hours and associated with means for indicating the AM / PM or day-night information with very good readability for the user.
  • Another object of the invention is to provide such a display using a relatively simple and inexpensive mechanism.
  • the timepiece according to the invention comprises a disc having a visible surface and defining a geometric axis of rotation which coincides with the axis of the hour hand, this disc being driven by means of training so as to complete one revolution in twenty-four hours in the same direction as the said hour hand.
  • the visible surface of said disc visually defines two half-discs positioned relative to said hour hand to indicate the AM-PM or day-night information relating to the time displayed by this hour hand.
  • Figure 1 shows a part according to the invention at four different times of a day respectively in Figures 1a) to 1d).
  • the timepiece presents an analog display of two different time zones.
  • the time of the first time zone is displayed by a set of central hands 4.
  • the time of the second time zone is displayed by a set of hands 6 offset relative to the central axis of the dial 8.
  • the present invention relates to the second display 6 generally used for displaying the time in a second time zone different from that in which the user of the timepiece is located.
  • the second set of hands 6 is driven so that the hour hand makes one revolution in twelve hours, similar to the first set of hands.
  • a disc 10 Under the second set of hands is provided a disc 10 whose geometric axis of rotation coincides with the axis of the hour hand 12 of the second set.
  • This disc 10 is driven by drive means, in particular such as shown in Figure 2, so as to make a revolution in twenty-four hours in the same direction as the needle 12.
  • the visible surface 14 visually defines two half-discs 15 and 16 used to indicate whether the displayed time is in the anteromidial period (AM) or in the post-meridian period (PM), in a variant not shown here, or if this displayed time corresponds to the diurnal period (day) or the nocturnal period (night ), as is the case in the variant shown in Figure 1.
  • the disc 10 is positioned relative to the hour hand 12 so that the position of this hand relative to the disc indicates directly in which period is the time displayed. More precisely, the information is given by the superposition of the hour hand 12 with one of the two half-discs 15 and 16. It will be noted here that other graphic representations making it possible to visually delimit two half-discs are possible. .
  • the time indicated corresponds to sunrise, that is to say at six in the morning in the second time zone in question.
  • Figure 1b) corresponds to approximately noon whereas
  • Figure 1c) corresponds approximately to sunset, that is to say approximately six in the evening.
  • Figure 1d) corresponds to midnight in this second time zone.
  • FIG 2 is shown schematically in section a particular embodiment of the drive means of the disc 10 according to the invention.
  • This disc is pierced in its center and mounted freely around the barrel 22 of the hour hand 12.
  • the barrel 22 is terminated by a wheel 24 which meshes with the pinion 26 of the timer mobile 28.
  • This mobile 28 also includes a wheel 30 which meshes with a pinion 32 mounted on the axis 34 carrying the minute hand 36.
  • On this axis 34 is also mounted a wheel 38 engaged with the rotor of the timepiece motor 40.
  • the barrel 22 is mounted to rotate freely on the axis 34 in a conventional manner.
  • the disc 10 has a toothed ring 44 on its underside.
  • the movable 28 also forms an intermediate movable between the wheel 24 associated with the hour hand 12 and the disc 10.
  • the movable 28 is extended by a shaft 46 having at its end a pinion 48 which meshes with the toothing 44.
  • the gears are defined so as to have a reduction coefficient of two between the wheel 24 and the disc 10. In other words, the gear ratio between the ring gear 44 and the pinion 48 is twice greater than the gear ratio between the wheel 24 and the pinion 26.
  • the disc 10 makes one turn when the needle 12 makes two, which makes it possible to obtain the correct display of the desired information.
  • the disc 10 is located in a recess in the plate 56 and that its upper face 14 is visible through an opening arranged in the dial 52.
  • the plate 56 is provided with an opening adjusted to the dimensions of the shaft 46 of the mobile 28.
  • the hub of the wheel 30 and the pinion 48 axially position the mobile 28 in the plate 56.
  • FIG. 2 is distinguished by a simplicity of execution and an economy of mobiles.
  • the arrangement of the drive means is relatively simple and allows a compact embodiment. It will be noted that the production of the timepiece according to the invention generates only little additional cost relative to a basic caliber.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
EP02079402A 2002-10-22 2002-10-22 Uhr mit analoger Anzeigevorrichtung, die mit einer Tag-Nacht-Anzeigevorrichtung zusammenwirkt Withdrawn EP1413934A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02079402A EP1413934A1 (de) 2002-10-22 2002-10-22 Uhr mit analoger Anzeigevorrichtung, die mit einer Tag-Nacht-Anzeigevorrichtung zusammenwirkt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02079402A EP1413934A1 (de) 2002-10-22 2002-10-22 Uhr mit analoger Anzeigevorrichtung, die mit einer Tag-Nacht-Anzeigevorrichtung zusammenwirkt

Publications (1)

Publication Number Publication Date
EP1413934A1 true EP1413934A1 (de) 2004-04-28

Family

ID=32050075

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02079402A Withdrawn EP1413934A1 (de) 2002-10-22 2002-10-22 Uhr mit analoger Anzeigevorrichtung, die mit einer Tag-Nacht-Anzeigevorrichtung zusammenwirkt

Country Status (1)

Country Link
EP (1) EP1413934A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1577716A2 (de) * 2004-03-16 2005-09-21 Lange Uhren GmbH Uhr
EP1734418A1 (de) * 2005-06-15 2006-12-20 Manufacture Roger Dubuis S.A. Uhr

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0492027A1 (de) * 1990-12-21 1992-07-01 Archimedia Creation Zeitanzeigevorrichtung
CH684916GA3 (de) * 1993-02-24 1995-02-15 Bruno Hotz Uhr mit Weltzeitanzeige.
DE29818586U1 (de) * 1998-10-19 1999-04-01 Becker, Thomas, 99425 Weimar Uhr

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0492027A1 (de) * 1990-12-21 1992-07-01 Archimedia Creation Zeitanzeigevorrichtung
CH684916GA3 (de) * 1993-02-24 1995-02-15 Bruno Hotz Uhr mit Weltzeitanzeige.
DE29818586U1 (de) * 1998-10-19 1999-04-01 Becker, Thomas, 99425 Weimar Uhr

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1577716A2 (de) * 2004-03-16 2005-09-21 Lange Uhren GmbH Uhr
EP1577716A3 (de) * 2004-03-16 2007-10-03 Lange Uhren GmbH Uhr
EP1734418A1 (de) * 2005-06-15 2006-12-20 Manufacture Roger Dubuis S.A. Uhr
WO2006133587A1 (fr) * 2005-06-15 2006-12-21 Manufacture Roger Dubuis S.A. Piece d'horlogerie
US7483340B2 (en) 2005-06-15 2009-01-27 Manufacture Roger Dubuis S.A. Timepiece

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