US3350873A - Date indexing - Google Patents

Date indexing Download PDF

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Publication number
US3350873A
US3350873A US565359A US56535966A US3350873A US 3350873 A US3350873 A US 3350873A US 565359 A US565359 A US 565359A US 56535966 A US56535966 A US 56535966A US 3350873 A US3350873 A US 3350873A
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US
United States
Prior art keywords
lever
cam
indexing
date ring
date
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
US565359A
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English (en)
Inventor
Egger Josef
Meitinger Heinz
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.)
United States Time Corp
Original Assignee
United States Time Corp
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 United States Time Corp filed Critical United States Time Corp
Application granted granted Critical
Publication of US3350873A publication Critical patent/US3350873A/en
Assigned to CHASE MANHATTAN BANK, N.A., THE reassignment CHASE MANHATTAN BANK, N.A., THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FREDERIKSPLEIN HOLDING 1970 B.V., TIMEX CLOCK COMPANY, A DE CORP., TIMEX COMPUTERS LTD., A DE CORP., TIMEX CORPORATION, A DE CORP., TIMEX ENTERPRISES, INC., A BERMUDA CORP., TIMEX GROUP LTD., A BERMUDA CORP., TIMEX MEDICAL PRODUCTS LTD., A BERMUDA CORP., TIMEX N.V.
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • 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

  • a watch is provided with a mechanism to display the date through a window in its dial.
  • the morning or afternoon, i.e., A.M. or P.M., is indicated by a dot which is moved to be either above or below the date
  • the mechanism includes a cam rotated by the gear train of the watch, a spring, an indexing lever biased by the cam against the spring, and a calendar ring.
  • the lever acts by unequal steps against the calendar ring.
  • the calendar ring has internal gear teeth and printed dates on its face.
  • Some calendar watches have adatering which carries. the dates in figures on its top surface. One figure becomes visible each day. The date ring must be turned forward 24 hours for one figure to appear. In some watches this turning forward occurs slowly. This has the disadvantage that during certain times the entire figures are not visible. Other watches provide a driving device which shifts the date ring step by step by jerks. These calendar watches have the disadvantage that the shifting for one pitch occurs after a delay of 24 hours. If counting units of half-day (twelve hours) are desired, then additional mechanism must be provided in addition to the regular watch movement. Such additional mechanisms are costly and require a relatively large space.
  • the calendar mechanism has a dial ring which rotates step by step for one pitch.
  • the dial ring is rotatable at first for a partial step corresponding to the first part of this pitch and thereafter for the remaining part of the pitch.
  • the indexing at each partial step occurs each time after the same interval, preferably twelve hours.
  • the calendar mechanism is moved by the regular drive for two partial steps without the need for an additional reduction gear.
  • the half of the day is shown by a dot which is visible at the upper part or at the lower part of the figure.
  • the visible lower dot indicates A.M. and the upper dot P.M.
  • A.M. or P.M By looking at the figure it is immediately known that it is A.M. or P.M.
  • One dot is provided between each figure; when one figure is shown the dot designates the second half of the day and at the following figure the dot designates the first half of the day.
  • FIG. 1 is a top plan view in the direction towards the dial, the dial being partially broken out and the hour wheel being shown by a dash-dot line;
  • FIG. 2 is a cross section taken along the line 2-2 of FIG. 1 and slightly enlarged;
  • FIGS. 3 to 7 are views corresponding with FIG. 1, which explain the mode of operation of the calendar mechanism, wherein the various parts are shown in consecutive positions;
  • FIGS. 8 and 9 are a top plan view of another embodiment of the present invention, the view being taken in the direction toward the dial.
  • the frame plate 10 is shown schematically.
  • a central sweep-second staif 11, having a fourth wheel pinion 12, is journaled with itsupper pivot in the bridge 1 (FIG. 2).
  • the center tube 14, which carries a center wheel 15, is positioned upon the sweep-second stafi? 11.
  • the center tube 14 is rotatively journaled in the bushing 16 which is stationarily fixed in the frame plate 10.
  • the hour wheel tube 17 is journaled on the outside of the bushing 16. Tube 17 is rigidly connected with thehour wheel'18. i i i
  • the dial 20 covers the watch movement towards the exterior and the hands of the watch cooperate with the dial in the conventional manner.
  • the dial 20 has a window 22, see FIG. 1.
  • a date ring 25 Underneath the outer edge of the dial a date ring 25 is journaled in a groove in the frame plate 10.
  • the date ring 25 carries on its face a number of figures from 1-31, which are at times visible through the window 22. In FIG. 1 the figure 31 is visible in the window 22.
  • a dot 26 is arranged between each of the figures. Dot 26 is visible in'FIG. 1 below the figure 31.
  • the hour wheel 18 has a jump groove 28.
  • a follower pin 29 fixed'in' a cam 30 engages in the jump groove 28.
  • Cam 30 is arranged belowthe hour wheel 18 and is journaled on a ring shoulder 31 of the frame plate. Cam 30 is secured against axial movements by a corresponding part of the frame plate 10 and the hour wheel 18.
  • An indexing lever 35 cooperates with cam 30.
  • Lever 35 has a guiding clearance'openi'ng 36 in which a front guiding pin 37 is engaged.
  • Pin 37 is fixed in the frame plate 10.
  • the indexing lever 35 has a rear guiding clear-' ance opening 40 in which a guiding pin 41 is engaged.
  • Pin 41 is also fixed in the frame plate 10.
  • the indexing lever 35 has a front arm portion 45 with a first indexing lever tooth 46, a second indexing lever too'th 47, and a banking nose 48.
  • Banking nose'48 cooperates with a banking pin 49 fixed in the frame plate 10.
  • the indexing lever 35 has a scanning arm portion 50, a rear arm portion 52, and an upturned locking bar 53.
  • FIG. 3 is the same as in FIG. 1. It approaches that position almost at noon (12 oclock). The hour wheel brings the hour hand in its position shortly before the figure 12 of the dial. In the position shown in FIG. 3 the date ring 25 is stopped by the catch arm 59 of safety catch 58. The date ringis not rotational clockwise until the safetycatch 58 is turned forward in clockwise direction against the 3 action of the indexing spring 55. The indexing lever 35 in FIG. 3 is in its pre-stressed condition and is ready to be pushed by spring 55 in a direction towards the right and downwards.
  • the scanning arm 50 rests with its indexing nose 65 on an apex 67 of the cam 30.
  • Pin 29 is at the left or counter-clockwise end of jump groove 28.
  • the nose 65 slides off from the cam 30.
  • the cam 30 comes to a dead point.
  • the cam 30 now performs under the influence of the scanning arm 50.
  • the indexing lever 35 is given a forward motion under the influence of the indexing spring in a clockwise direction until the banking pin 49 stops the banking nose 48 of the indexing lever 35.
  • This position of the cam 30 at that time is shown in FIG. 4.
  • the cam has quickly been rotated the length of its jump groove 28.
  • the indexing lever 35 under the influence of the indexing spring 55 moves towards the right and also a little bit downwards, as shown in FIG. 4. This movement of the indexing lever is controlled by clearances 36 and 40 cooperating with the guiding pins 37 and 41, respectively.
  • the second indexing lever tooth 47 takes along the tooth 68 of the date ring until the front indexing lever arm 45 banks against the banking pin 49 and its movement is stopped.
  • This forward movement of the date ring represents only a first partial step of the total movement during a 24-hour period.
  • the same date remains visible in the window 22.
  • the dot indicating the antemeridian disappears under the dial.
  • the dot 70 between the figure 31 and the following figure 1 appears in the top of the window and serves as an indication that it is the post-meridian (afternoon) of the thirty-first day.
  • FIG. 4 shows also that the indexing spring 55 is now in a partially relieved condition.
  • the catch arm 59 of the safety catch 58 was lifted a little bit by the forward movement of the date ring.
  • the teeth of safety catch 58 in FIGS. 3-7 is an alternative to the teeth of the safety catch 58 of FIG. 1.
  • the catch arm 59 engages in the tooth space 71 so that its right catch flank 73 rests against the tooth 74 and its left catch flank 75 against the tooth 76.
  • the date ring is secured against a rotational movement in both directions.
  • the safety catch is locked in this position by the fact that the safety arm 60 with its front end 61 touches the locking bar 53.
  • the locking bar 53 presses under the influence of the indexing spring 55 against the front end 61 and locks the safety catch in the position shown in FIG. 4.
  • the safety catch 58 remains for the present in the position shown in FIG. 4.
  • the next partial step is longer than the first partial step in order to change a figure.
  • the cam rotates forward together with the hour wheel and acts with its curved section 77 on the scanning arm so that the indexing lever is again lifted. Shortly before midnight it occupies the position shown in FIG. 5.
  • the indexing spring 55 will again be pre-stressed.
  • the cam 30, as described in connection with FIG. 3 arrives with its apex 67 at the indexing nose 65 of the scanning arm of the indexing lever. Under the influence of the indexing spring 55 occurs again a jerky shifting movement of lever 35 which is limited by the banking pin 49.
  • the indexing lever is moved towards the right and with its front downwards.
  • FIG. 7 shows a special event which occurs at the backward rotation of the cam, e.g. opposite in direction from FIG. 6, which may occur during setting of the watch.
  • the scanning arm rests against a curved section 78 of cam 30 and this curved section shows a slow rise.
  • the indexing teeth of the indexing lever 35 remain disengaged from the teeth 24 of the date ring.
  • An indexing of the date ring is prevented during backward rotation of the cam.
  • a curved section 82 is joined to curved section 78 which begins at the end of the curved section 78 and reaches as far as to the dead point snap position.
  • This curved section 82 has a relatively strong ascent by which the snapping is caused.
  • This curved section 82 is advantageously used for a fast forward indexing of the date ring when the watch is set as to date. In the vicinity of an end position at the end of a time period, thus e.g.
  • an indexing lever which at each period of time, eg 12 hours, is once operable.
  • the indexing lever acts directly with its indexing teeth on the date ring.
  • the mechanism shown has a date ring having one tooth per partial step, the same number of teeth as the regular date ring.
  • the indexing teeth act at two partial steps on the same tooth of the date ring and rotate it.
  • the spring acts on the indexing lever and on the cam and cooperates with a ratchet which locks the date ring.
  • the lock ratchet has two positions corresponding to the partial steps. One partial step is longer than the other.
  • the ratchet has two locking means which are unequally spaced.
  • the indexing lever would operrate with a frictional contact on the date ring. In this alternative the entire function of the spacing is controlled by the lock ratchet having two unequally spaced locking means.
  • FIGS. 8 and 9' Another embodiment of the present invention is shown in FIGS. 8 and 9'.
  • the driving mechanism is the same as in the prior embodiment of FIGS. 1-7.
  • the cam 30, pin 29, jump groove 28, indexing spring 55, indexing lever 35, locking pin 49 and safety catch 58 are the same.
  • the only differences from the prior embodiment of FIGS. l-7 are: (l) the date ring 25 has twice as many teeth, i.e., 62 teeth; (2) the indexing lever 35 has only one indexing tooth and (3) the safety catch 58 has only one tooth holding means, its groove 101.
  • one tooth 103 on date ring 25 is closer to the second tooth 102 of its pair than it is to a tooth 104 of the next pair.
  • the 31 pair of teeth are equally spaced around the inside circumference of the date ring.
  • the lever 35 acts upon one tooth of the date ring after another in sequence, i.e., acting on tooth 102, then tooth 103, then tooth 104, etc.
  • the safety catch 58 holds the date ring in the position it is rotated to by the indexing lever 35.
  • the single tooth 100 on the indexing lever carries the date ring alternatively long and short distances, corresponding to the spacings between the teeth on the date ring. The short distance shifts the ring to move the dot 70 out from the window and to expose the next dot,.
  • FIG. 8 shows the position of the lever 35 prior to switching at midnight, i.e., a date change.
  • FIG. 9 shows the position of lever 35 prior to switching at noon, i.e., A.M. to P.M. change.
  • the present invention provides a cam which is driven by the hour wheel and which makes one complete revolution in twelve hours.
  • the cam reaches a determined dead center position and under the action of a spring performs a jump relative to the hour wheel in the direction of the motion. This provides a jerky motion.
  • the motion is limited by a pin of the cam plate in a groove of the hour wheel, or a pin in the hour wheel engaging in a groove in the cam plate.
  • the snap-like motion of the cam enables the indexing lever to perform a snap-like motion.
  • the levers motion occurs first towards the date ring. Then the front end of the indexing lever moves along the date ring in the direction of its rotation.
  • the levers motion is limited by a banking pin.
  • the forward movement for partial steps can be reached when the shifting ahead occurs not jerkily but creepingly within a relatively short time, e.g.
  • the cam is arranged so that a relatively short rotation backwards and forwards, e.g. 3 hours, is sufficient to obtain a shifting ahead of the date ring.
  • a relatively short and quickly performed forward and backward movement of the hour hand is suflicient to make a relatively large date correction in a short time.
  • the indexing lever remains in touch with the date ring and slides along on it during forward rotation of the cam. During the backward movement of the hands, the indexing lever is separated from the date ring and does not act on it so that a forward movement of the date ring does not occur.
  • a calendar mechanism comprising: a rotatable flat date ring journaled in the frame plate and having consecutive figures 1-31 printed on its top face, a plurality of teeth on its circumference, and at least one printed mark to indicate AM. or P.M.
  • a rotatable cam adapted to be driven by the wheels of the watch; a lever journaled on the frame plate and having two teeth to act upon each tooth of the date ring; a spring pushing the lever against the cam and compressed by rotation of the cam against the lever; wherein the spring acts upon a locking lever, the locking lever is journaled on the frame plate, and the locking lever has a first tooth holding portion, a second tooth holding portion and a third tooth holding portion, the distance between the first and second portions being greater than the distance between the second and third, whereby alternate advances of the date ring for the same time period are relatively long and short distances.
  • a horological instrument including a train of gear wheels, a date ring having calendar information on its face and a plurality of teeth on its circumference; a cam operated by one of said wheels, a spring, a lever arm biased by the spring against the cam for at least a portion of the cam's rotation and having on one of its ends a tooth which acts against the teeth of the date ring to rotate the ring, and a locking lever to lock the date ring when the lever is not advancing the date ring; said locking lever having three spaced tooth holding means, the first and second holding means being space-d further apart than the said second and third holding means.
  • a calendar mechanism comprising: a rotatable flat date ring journaled in the frame plate and having consecutive figures 1-31 printed on its top face, a plurality of teeth on its circumference, and at least one printed mark to indicate AM. or P.M.
  • a rotatable cam adapted to be driven by one of the said wheels, a lever journaled on the frame plate and having at least first and second teethto act upon each tooth of the date ring; a spring pushing the lever against the cam and compressed by rotation of the cam against the lever; the spacing of the teeth on the lever and the movement of the lever cooperatively arranged so that the first tooth of the lever acts upon a tooth of the date ring for one rotation of the cam and the second tooth of the lever acts upon the same tooth of the date ring for the next sequential rotation of the cam.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
US565359A 1964-08-25 1966-07-12 Date indexing Expired - Lifetime US3350873A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEU10981A DE1242512B (de) 1964-08-25 1964-08-25 Anzeigevorrichtung an einer Uhr zum Anzeigen einer Vielzahl von Kalenderinformationen

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US565359A Expired - Lifetime US3350873A (en) 1964-08-25 1966-07-12 Date indexing

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US (1) US3350873A (de)
CH (1) CH466809A (de)
DE (1) DE1242512B (de)
GB (1) GB1068470A (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3421310A (en) * 1966-10-05 1969-01-14 Bulova Watch Co Inc Actuating mechanism for timepiece date indicator
US3449905A (en) * 1966-02-25 1969-06-17 Ebauches Sa Calendar timepiece
FR2046920A1 (de) * 1969-06-19 1971-03-12 Citizen Watch Co Ltd
US3597917A (en) * 1968-03-29 1971-08-10 Suwa Seikosha Kk Day-indicating system of a calendar watch
US3683614A (en) * 1969-07-23 1972-08-15 Katsuhiko Komiyama Day calendar timepiece with multiple language displays
US4125994A (en) * 1975-10-07 1978-11-21 Kabushiki Kaisha Daini Seikosha Train structure of a timepiece
EP1536298A1 (de) * 2003-11-25 2005-06-01 Montres Breguet S.A. Kalendermechanismus mit Mitführungs- und Korrektionsvorrichtungen für zwei Anzeiger
WO2012127054A1 (fr) * 2011-03-23 2012-09-27 Samep S.A. - Montres Emile Pequignet Mecanisme d'entrainement instantane pour mouvement horloger
WO2017130075A1 (fr) * 2016-01-25 2017-08-03 Patek Philippe Sa Geneve Mécanisme de quantième
CN107045276A (zh) * 2016-02-09 2017-08-15 精工电子有限公司 日历机构、机芯以及钟表
US20210191330A1 (en) * 2019-12-20 2021-06-24 Manufacture D'horlogerie Audemars Piguet Sa Timepiece mechanism intended to be driven through a variable number of steps

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018106377B4 (de) 2018-03-19 2019-08-14 NOMOS Glashütte/SA Roland Schwertner KG Uhr mit Antriebsmechanismus zum schrittweisen Drehen einer Datumscheibe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US54198A (en) * 1866-04-24 Improvement in calendar-clocks
CH296400A (fr) * 1952-02-23 1954-02-15 Schwab Sa Louis Pièce d'horlogerie à indicateur des quantièmes.
CH338766A (de) * 1957-04-30 1959-05-31 Guebelin Soehne Schalteinrichtung für Uhrwerk
CH368751A (fr) * 1961-02-01 1962-12-29 D Ebauches De Bettlach S A Fab Dispositif d'entraînement d'un organe indicateur des quantièmes à avance instantanée dans une montre-calendrier
US3082594A (en) * 1960-05-06 1963-03-26 Ebauchesfabrik Eta Ag Driving mechanism for the date indicator in a calendar watch

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH364459A (de) * 1960-05-06 1962-09-15 Ebauchesfabrik Eta Ag Fortschalteinrichtung für einen innenverzahnten Datumring in einer Datumuhr

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US54198A (en) * 1866-04-24 Improvement in calendar-clocks
CH296400A (fr) * 1952-02-23 1954-02-15 Schwab Sa Louis Pièce d'horlogerie à indicateur des quantièmes.
CH338766A (de) * 1957-04-30 1959-05-31 Guebelin Soehne Schalteinrichtung für Uhrwerk
US3082594A (en) * 1960-05-06 1963-03-26 Ebauchesfabrik Eta Ag Driving mechanism for the date indicator in a calendar watch
CH368751A (fr) * 1961-02-01 1962-12-29 D Ebauches De Bettlach S A Fab Dispositif d'entraînement d'un organe indicateur des quantièmes à avance instantanée dans une montre-calendrier

Cited By (17)

* 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
US3421310A (en) * 1966-10-05 1969-01-14 Bulova Watch Co Inc Actuating mechanism for timepiece date indicator
US3597917A (en) * 1968-03-29 1971-08-10 Suwa Seikosha Kk Day-indicating system of a calendar watch
FR2046920A1 (de) * 1969-06-19 1971-03-12 Citizen Watch Co Ltd
US3683614A (en) * 1969-07-23 1972-08-15 Katsuhiko Komiyama Day calendar timepiece with multiple language displays
US4125994A (en) * 1975-10-07 1978-11-21 Kabushiki Kaisha Daini Seikosha Train structure of a timepiece
US7170824B2 (en) 2003-11-25 2007-01-30 Montres Breguet Sa Calendar mechanism having means driving and correcting two indicators
US20050281136A1 (en) * 2003-11-25 2005-12-22 Jean Wilmouth Calendar mechanism having means driving and correcting two indicators
EP1536298A1 (de) * 2003-11-25 2005-06-01 Montres Breguet S.A. Kalendermechanismus mit Mitführungs- und Korrektionsvorrichtungen für zwei Anzeiger
WO2012127054A1 (fr) * 2011-03-23 2012-09-27 Samep S.A. - Montres Emile Pequignet Mecanisme d'entrainement instantane pour mouvement horloger
FR2973123A1 (fr) * 2011-03-23 2012-09-28 Samep Montres Emile Pequignet Mecanisme d'entrainement instantane pour mouvement horloger
US8750080B2 (en) 2011-03-23 2014-06-10 Pequignet S.A. Instantaneous driving mechanism for timepiece movement
WO2017130075A1 (fr) * 2016-01-25 2017-08-03 Patek Philippe Sa Geneve Mécanisme de quantième
CN107045276A (zh) * 2016-02-09 2017-08-15 精工电子有限公司 日历机构、机芯以及钟表
CN107045276B (zh) * 2016-02-09 2020-03-27 精工电子有限公司 日历机构、机芯以及钟表
US20210191330A1 (en) * 2019-12-20 2021-06-24 Manufacture D'horlogerie Audemars Piguet Sa Timepiece mechanism intended to be driven through a variable number of steps
US11892804B2 (en) * 2019-12-20 2024-02-06 Manufacture D'horlogerie Audemars Piguet Sa Timepiece mechanism intended to be driven through a variable number of steps

Also Published As

Publication number Publication date
DE1242512B (de) 1967-06-15
GB1068470A (en) 1967-05-10
CH466809A (de) 1968-08-30

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AS Assignment

Owner name: CHASE MANHATTAN BANK, N.A., THE

Free format text: SECURITY INTEREST;ASSIGNORS:TIMEX CORPORATION, A DE CORP.;TIMEX COMPUTERS LTD., A DE CORP.;TIMEX CLOCK COMPANY, A DE CORP.;AND OTHERS;REEL/FRAME:004181/0596

Effective date: 19830331