US3352103A - Calendar watch with an instantaneous date-change motion - Google Patents

Calendar watch with an instantaneous date-change motion Download PDF

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Publication number
US3352103A
US3352103A US497217A US49721765A US3352103A US 3352103 A US3352103 A US 3352103A US 497217 A US497217 A US 497217A US 49721765 A US49721765 A US 49721765A US 3352103 A US3352103 A US 3352103A
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US
United States
Prior art keywords
date
entrainment member
driving spring
date indicator
control wheel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US497217A
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English (en)
Inventor
Giger Urs
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.)
Ebauchesfabrik ETA AG
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Ebauchesfabrik ETA AG
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Publication date
Application filed by Ebauchesfabrik ETA AG filed Critical Ebauchesfabrik ETA AG
Application granted granted Critical
Publication of US3352103A publication Critical patent/US3352103A/en
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • G04B19/25373—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by an energy source which is released at determined moments by the clockwork movement

Definitions

  • the present invention has reference to an improved calender watch with an instantaneous date-change motion in which a driving spring is first tensioned by means or a date indicator control wheel continuously driven by the movement while the date indicator is at standstill and then effectuates a sudden advancing movement of this date indicator by actuating an entrainment means.
  • the known calendar watches with an instantaneously jumping date indicator possess a larger number of elements which not only have to be separately manufactured but must also be'separately arranged in the movement. This is especially truefor the entrainment means and the date indicator driving spring which have to be mounted in the movement with the associated fastening-, supportand guide-elements. Consequently, not only is the assembly of a calendar watch with an instantaneous date-change motion more diflicult in comparison with the known, usual calendar watches with slow datechange motion, but furthermore, space requirements are also increased.
  • the additional structural elements such as, for instance, the driving spring, the entrainment member and the associated fastening-, support-, and guide-elements and, on the other hand, the remaining elements required for carrying out changing of the date, are not arranged in superimposed fashion, rather in juxtapositioned relationship and thus do not directly require any additional structural height, nonetheless for all of the elements which are associated with the date-change operation such an enlarged portion of the surface of the movement base-plate is covered that the relevant elements can no longer be accommodated in recesses of the movement base-plate, rather must be arranged thereabove, so that in the end'elfect there is nevertheless required an additional structural height for the relevant elements.
  • Another, more specific object of this invention concerns itself with the construction of an improved calendar watch having an instantaneous date-change motion wherein the components for carrying out the date-change operation require relatively little space, so that the watch still possesses a neat, compact appearance while guaranteeing for a high degree of accuracy and efiiciency in the datechange operation.
  • the invention contemplates providing a calendar Watch in which the date indicator driving spring is seated upon the date indicator control wheel and carries the entrainment means.
  • FIGURE 1 is a top plan view schematically illustrating a preferred embodiment of inventive device as viewed from the dial side of the movement and depicts the start of the date-change motion;
  • FIGURE 2 is a top plan view, similar to FIGURE 1, yet depicting the position of the components of the inventive device directly prior to changing the date;
  • FIGURE 3 is a top plan view, similar to the previous FIGURES, showing the position of the components during carrying out a correction of the date indicator.
  • This calendar watch W comprises a conventional motion work having a cannon pinion 1, an hour wheel 2, a minute wheel 3 and a hand-setting wheel 4.
  • this watch W further possesses a date indicator control wheel 5 which is continuously driven by the hour wheel 2 through the agency of a speedreduction gear 6 and carries out one revolution in twentyfour hours.
  • a standard date ring 7 which is mounted in known manner on the movement.
  • This date ring 7 is step-wise and instantaneously advanced once during each revolution of the date indicator control wheel 5, by means of a driving spring 8 seated upon control wheel 5 and an entrainment member 9 carried by this driving spring 8.
  • the entrainment member 9 comes into engagement with an inner toothing 10a possessing individual spaced teeth 10 and provided at the date ring 7.
  • the driving spring 8 is first gradually tensioned while the date ring 7 is at standstill.
  • the date ring 7 is fixedly held by a spring-loaded detent 12.
  • This detent 12 is mounted upon the movement for rotation about a journal pin 13 and is axially fixedly restrained by means of a cover plate 14 connected via a screw 11 to the movement bridge of the movement.
  • the entrainment member 9 under the driving action of the control wheel 5, overcomes the blocking action exerted upon the date ring 7 due to engagement therewith of the detent 12 occuring under the action of the spring 15, then the date ring 7 is released by the detent 12, and due to the action of the previously tensioned driving spring 8 and the entrainment member 9 carried by the latter is suddenly advanced by one step.
  • the driving spring 8 possessing the entrainment member 9 and a hub or nave 17, seated upon the shaft 16 of the control wheel 5, is formed of one piece.
  • the control wheel 5 and a cover plate 18 likewise seated upon the shaft 16 limit the play of the entrainment member 9 in axial direction to such an extent that the latter can neither move above nor below past the teeth 10 of the date ring 7.
  • the driving spring 8 and the entrainment member 9 form a single structural unit which does not require any greater space in elevation than the corresponding date indicator driving wheel with embedded entrainment pin of the known, usual calendar watches having slow date-change motion.
  • the control wheel 5 of the inventive calendar watch W can be of thinner construction because no entrainment pin is embedded in the latter and, furthermore, the entrainment member 9 with associated driving spring 8 as well as the cover plate 18 can be accommodated in the same space as the entrainment pin for the relevant known calendar watches.
  • the flanks of the teeth of the aforesaid ring and the rear flank 19 of the detent 12 counteracting the advancing movement of the date ring 7 are advantageously directed such that they enclose a small angle with the movement radius passing through this flank 19. Due to this measure the detent 12 only then comes out of engagement, even when using a weak spring 15, when the date ring 7 is driven by a relatively large force. In order to exert such a force upon the date ring 7 the driving spring 8 alone is insufl'icient. Accordingly, the hub 17 additionally possesses a rigid portion 20 which, at the end of the first phase of the advancing movement i.e.
  • a camming surface 21 is located at the hub 17 and, as shown in FIGURE 3, cooperates with the entrainment member 9 to prevent a reverse switching or indexing of the date ring -7 when the hands of the watch are set backwards.
  • the camming surface 21 is inclined for this purpose in such a manner that it pulls the entrainment member 9 out of the teeth 10 of the date ring 7 in order to remove its operable engagement with such date ring 7, the latter being locked by the forward locking or blocking flank 22 of the detent 12 when the control wheel 5 is driven in the direction of the arrow b (FIGURE 3) during setting of the hands.
  • the date ring 7 can be set anew quickly by turning the hands through a few hours forwardly and rearwardly in the usual manner. During each to-and-fro movement of the hands the date ring 7 is then advanced by one step.
  • the described structure exhibiting the hub 17, the driving spring 8, the entrainment member 9, the portion 20 and the camming surface '21 can be very easily manufactured in a punching operation, and furthermore, can be mounted at least just as easily upon the date indicator control wheel 5 as a conventional entrainment pin. Due to the provided arrangement of the entrainment member 9 4. it is possible to provide the date ring 1 with shorter teeth than exist at calendar watches having a rigid entrainment member.
  • a date indicator capable of being driven by the watch movement, a shaft upon which is mounted said date indicator control wheel, a driving spring cooperating with said date indicator, said driving spring including a hub portion seated upon said shaft, an entrainment member carried by said driving spring engageable with said date indicator, said driving spring being operably mounted upon said date indicator control wheel, said driving spring, said hub portion and said entrainment member being formed of one piece, said date indicator control wheel tensioning said driving spring only when said date indicator is at standstill and then said driving spring brings about forward movement of said date indicator through actuation of said entrainment member, a spring-loaded detent cooperating with said date indicator for temporarily holding the latter in a date-indicating position, a rigid member portion fixedly connected with said date indicator control wheel for operatively connecting said entrainment member with said date indicator control wheel in forcelocking manner when said driving spring is fully tensioned in order
  • a date indicator capable of being driven by the watch movement, a shaft upon which is mounted said date indicator control wheel, a driving spring cooperating with said date indicator, said driving spring including a hub portion seated upon said shaft, an entrainment member carried by said driving spring engageable with said date indicator, said driving spring being operably mounted upon said date indicator control wheel, said driving spring, said hub portion and said entrainment member being formed of one piece, said date indicator control wheel tensioning said driving spring only when said date indicator is at standstill and then said driving spring brings about forward movement of said date indicator through actuation of said entrainment member, a camming surface which is stationary relative to said date indicator control wheel, said camming surface cooperating with said entrainment member during backward setting of the watch in order to disengage said entrainment member from said date indicator.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)
US497217A 1965-04-20 1965-10-18 Calendar watch with an instantaneous date-change motion Expired - Lifetime US3352103A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH546265A CH446198A (de) 1965-04-20 1965-04-20 Datumuhr mit ruckartigem Datumwechsel

Publications (1)

Publication Number Publication Date
US3352103A true US3352103A (en) 1967-11-14

Family

ID=4294001

Family Applications (1)

Application Number Title Priority Date Filing Date
US497217A Expired - Lifetime US3352103A (en) 1965-04-20 1965-10-18 Calendar watch with an instantaneous date-change motion

Country Status (4)

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US (1) US3352103A (OSRAM)
CH (1) CH446198A (OSRAM)
DE (1) DE1523721B2 (OSRAM)
GB (1) GB1131205A (OSRAM)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3449905A (en) * 1966-02-25 1969-06-17 Ebauches Sa Calendar timepiece
US3744237A (en) * 1971-03-04 1973-07-10 Citizen Watch Co Ltd Indicating wheel driving mechanisms of timepieces
US3893289A (en) * 1973-07-13 1975-07-08 Ebauchesfabrik Eta Ag Watch movement with a circular movable indicator member
US5384755A (en) * 1991-12-20 1995-01-24 Eta Sa Fabriques D'ebauches Timepiece of the mechanical or electromechanical type including a drive wheel controlling at least one display system such as a date display
EP1220058A1 (fr) 2000-12-22 2002-07-03 Eta SA Fabriques d'Ebauches Mécanisme d'entraínement instantané d'un indicateur de quantième
CH697018A5 (fr) * 2004-12-03 2008-03-14 Christophe Claret Sa Pièce d'horlogerie à animation.
JP7517008B2 (ja) 2020-01-08 2024-07-17 セイコーエプソン株式会社 ムーブメントおよび時計

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4895666U (OSRAM) * 1972-02-16 1973-11-14
JPS4869071U (OSRAM) * 1971-12-02 1973-09-01
SU794596A1 (ru) * 1978-06-23 1981-01-07 Научно-Исследовательскийинститут Часовой Промышленности Календарное устройствоМгНОВЕННОгО дЕйСТВи
DE10136420B4 (de) * 2001-07-26 2005-11-10 NOMOS Glashütte/SA Roland Schwertner KG Uhr, insbesondere Armbanduhr, mit Datumsanzeigeeinrichtung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH328143A (fr) * 1956-01-25 1958-02-28 Zenith Montres Pièce d'horlogerie à quantième à déclenchement semi-instantané

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH328143A (fr) * 1956-01-25 1958-02-28 Zenith Montres Pièce d'horlogerie à quantième à déclenchement semi-instantané

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3449905A (en) * 1966-02-25 1969-06-17 Ebauches Sa Calendar timepiece
US3744237A (en) * 1971-03-04 1973-07-10 Citizen Watch Co Ltd Indicating wheel driving mechanisms of timepieces
US3893289A (en) * 1973-07-13 1975-07-08 Ebauchesfabrik Eta Ag Watch movement with a circular movable indicator member
US5384755A (en) * 1991-12-20 1995-01-24 Eta Sa Fabriques D'ebauches Timepiece of the mechanical or electromechanical type including a drive wheel controlling at least one display system such as a date display
EP1220058A1 (fr) 2000-12-22 2002-07-03 Eta SA Fabriques d'Ebauches Mécanisme d'entraínement instantané d'un indicateur de quantième
CH697018A5 (fr) * 2004-12-03 2008-03-14 Christophe Claret Sa Pièce d'horlogerie à animation.
US20080106978A1 (en) * 2004-12-03 2008-05-08 Christophe Claret S.A. Animated Timepiece
US7420883B2 (en) 2004-12-03 2008-09-02 Christophe Claret S.A. Animated timepiece
JP7517008B2 (ja) 2020-01-08 2024-07-17 セイコーエプソン株式会社 ムーブメントおよび時計

Also Published As

Publication number Publication date
DE1523721B2 (de) 1971-12-30
GB1131205A (en) 1968-10-23
DE1523721A1 (de) 1969-06-26
CH546265A4 (OSRAM) 1967-07-14
CH446198A (de) 1968-03-15

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