US3735582A - Calendar watch day-date driving and correcting means - Google Patents

Calendar watch day-date driving and correcting means Download PDF

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Publication number
US3735582A
US3735582A US00240118A US3735582DA US3735582A US 3735582 A US3735582 A US 3735582A US 00240118 A US00240118 A US 00240118A US 3735582D A US3735582D A US 3735582DA US 3735582 A US3735582 A US 3735582A
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US
United States
Prior art keywords
pinion
wheel
calendar
disk
day
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
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US00240118A
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English (en)
Inventor
J Schneider
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.)
Tissot SA
Original Assignee
Fabrique dHorlogerie CHS Tissot et Fils 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
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Publication of US3735582A publication Critical patent/US3735582A/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
    • G04B19/25—Devices for setting the date indicators manually

Definitions

  • crown also in its time setting position to set the day.
  • Date and day-of-the-week calendar watches are already known, which are so made that date setting may be effected by meansof the winding crown being in the position of the hour setting.
  • those watches comprise a calendar wheel or a 24-hour wheel bearing two driving organs ofwhich one is ganged to the wheel and directly meshes with the toothing of the day-of-the-week indicating organ, while the other may pull out of the way when the calendar wheel is moved backward.
  • the date-organ is made to advance by one step for each pendular motion while the day-of-the-week indicating organ remains in place.
  • the purpose of the present invention is to create a calendar mechanism for a date and day-of-the-week watch that shall comprise only a minimum numberof parts which may be rapidly assembled and fitted or adjusted, such mechanism allowing separate correction for the date and theday-of-the-week by an operation meat and a correction mechanism itself comprising a calendar wheel-and-pinion and means for activating said wheel-and-pinion from the outside of the watch, this wheel-and-pinion being provided with two driving components, one of which functions in concert with the date-indicating organ and the other of which functions in concert with the day-of-the-week indicating organ, thus characterized that said driving elements are ganged to said calendar wheel-and-pinion and apart by an angle other than on said wheel-and-pinion, and that said indicating organs are kept at rest by pivoting jumpers biased by springs in such positions that their toothings are asymmetrical with respect to the line from the center common to said indicating organs to the center of said rotary wheel-and-pinion.
  • the attached drawing shows as an example an embodiment of the watch according to the invention.
  • FIG. 1 is a top view of the movement of this watch, the dial having been removed and the day-disk being shown only in fragment, and
  • FIG. 2 is a section along the line 11-11 and on a larger scale.
  • the movement shown in the drawing does provide a calendar mechanism in whichthe same organs ensure the conventional commutation of the date-ring and of the day-star, also ensuring the setting of the organs when first started after a lengthy stop, or at the end of a month of fewer than thirty-one days.
  • the drawing shows a watch movement of which the bottom plate 1 is provided with a central sleeve 2 through which passes arbor 3 of a second wheel-and-pinion and which guides and supports a cannon-pinion 4; the toothing of the latter engages a dialtrain wheel (not shown).
  • An hour wheel-and-pinion 5 pivots about this cannon-pinion, the construction'of which will be described in greater detail below and which is so driven by the movement that it rotates by 360 every twelve hours.
  • Wheels-and-pinions 4 and 5, also date-ring 6 with inside toothing 7, and a calendar wheel-and-pinion 8 are kept in place axially on bottomplate 1 by a calendar bridge 9; a day-star 10 rotates on the latter.
  • the day-star 10 is axially kept in place by a ring 11 driven into a shoulder of calendar bridge 9.
  • Dial 12, extending above calendar bridge 9, is provided with a date window 13 and with a window 14 indicating the day of the week, these windows being conventionally arranged.
  • Day-star 10 is provided with a toothing 1 5 which, as shown in FIG. 2, is at a higher level than toothing 7 of the date'organ.
  • This toothing 15 is provided with fourteen teeth and is meant to be activated once every 24 hours.
  • a jumper 17 provided with a peg 18 engaging a bottom-plate bore-hole is biased by strip-spring l9 and functions in concert with toothing 15 so as to keep day indicating organ in such rest positions that one of the indications 16 appears exactly in window 14 for each of those rest positions.
  • the thirty-one teeth toothing 7 of the date indicating organ 6 functions in concert with a jumper 20 biased by a strip-spring 21 assuring that the date-organ shall stay in such an orientation that one of the numerals 22 borne on the periphery of that organ appears in window 13.
  • Indicating organs 6 and 10 are driven by the hour wheel-and-pinion via the calendar wheel-and-pinion 8.
  • the hour wheel-and-pinion 5 is made up of two components ganged to each other and of which one is a thin and flat disk 23 constituting the hour-wheel proper and provided with a toothing 24 enmeshing the pinion of the dial-train wheel.
  • This disk 23 is fastened to a plastic element which is a part of the hour-wheel assembly 5. It may be directly molded onto disk 23 and it comprises a central hub 25 provided with pegs 26 that engage corresponding openings in disk 23.
  • cylindrical sleeve 27 which constitutes the hour-wheel and ensures that wheel-andpinion 5 may pivot round the cannon-pinion 4; at its upper end, cylindrical sleeve 27 carries the hour-hand 28.
  • the central hub is so punched out as to be provided with three small elastic tongues 29 120 apart and extending from its periphery to its central opening. These elastic little tongues terminate in bulges 30 which are thicker than the tongues and which as shown in the drawing when wheel-and-pinion 5 has been assembled, press elastically against the underside of bridge 9. These little tongues ensure there is no axial shake of the hour wheel-and-pinion and of the cannonpinion and thus allows steady functioning of those wheels-and-pinions.
  • a peripheral segment of the described plastic element extends around the central hub 25 and the little tongues 29; this plastic element is in the shape of arc-of-circle 31 of about 290 and of a toothed sector 32 with three teeth flat at their ends;
  • This wheel-and-pinion 8 may also be embodied as a plastic part made according to known methods of compression-molding; it comprises a plate 34 and a hollow cylinder 35.
  • a radial finger-piece 36 extends from the end of hollow cylinder as shown by FIG. 2, this fingerpiece is located at the level of toothing 15 of the daystar and may engage this toothing.
  • a second f'mger-piece 37 of cylindrical shape projects from plate 34; finger-piece 37 is at the level of toothing 7 of the date-organ and will describe a circular path leading it into toothing 7 when wheel-and-pinion 8 rotates about its axis.
  • Plate 34 is provided with a toothing on its periphery; this toothing consists of two toothed sectors 38 and 39 each of four teeth and of the same pitch as toothed sector 32. These two diametrically opposite sectors 38 and 39 are separated by two tooth-to-tooth or entre-dent gaps 40 and 41 which are of lesser depths than those found between the teeth in sectors 38 and 39 and of a slightly larger pitch.
  • wheel-and-pinion 8 shall be concluded by observing that one of the tooth-to-tooth gaps within toothed sector 39 is provided with a notch 42. This notch, however, assumes no functional role. It is merely provided to allow molding wheel-and-pinion 8.
  • sectors 38 and 39 may enmesh with sector 32 of the hour wheel-and-pinion 5, tooth-to-tooth gaps 40 and 41 are such that when one is opposite the arc-of-circle part of wheel-and-pinion 5, the two teeth which aredefining it are practically touching this part of the arc-ofcircle, and wheel-and-pinion 8 is immobilized.
  • the three teeth of sector 32 successively will enmesh each of the three tooth-to-tooth gaps of one of the sectors 38 and 39, causing a rotation of 180 in wheel-and-pinion 8 by bringing one of the tooth-to-tooth gaps 40 or 41 opposite that part which is an arc of circle 31.
  • Wheeland-pinion 8 thereafter will remain stationary until the first tooth of toothed sector 32 will again enmesh one of the teeth bounding the tooth-to-tooth gap opposite the leading wheel-and-pinion.
  • wheel-and-pinion 8 will rotate at a fairly high speed during its own displacement.
  • Driving finger-pieces 36 and 37 being at different heights, each one will only act in concert with one of the indicating organs 6 or 10; for every two revolutions of the hour wheel-and-pinion, the driving finger-pieces 36 and 37 will mesh with the toothing of that organ they function within concert and they will activate it by one pitch or step.
  • the described calendar wheel-and-pinion therefore ensures the automatic commutation of the two organs 6 and 10 once a day, starting from the hour wheel-and-pinion 5, and at a fairly high speed. This is so because for the arrangement described above, the duration of the commutation of the date-organ is about half an hour and that of the day-organ about three-fourths of an hour.
  • date-setting and day-of-the-week setting may be achieved independently one from the other by means of to-and-fro rotational motions imparted to the winding stem by a crown, the latter being in the position for time-setting.
  • jumpers 17 and 20 are so located that for the rest positions of organs 6 and 10, toothings 7 and 15 are located asymmetrically with respect to the line from the center of the movement to the center of rotation of wheel-and-pinion 8.
  • FIG. 1 shows the hour wheel-and-pinion 5 rotating clockwise; therefore, when sector 32 activates wheel-and-pinion 8, the latter is made to rotate counter-clockwise.
  • this time-gap is of no practical significance because, as an example, the date may be so adjusted that it will commutate exactly at midnight whereas the day-of-the-week may commutate between 0 h 30 and 1 hour; then the day-star shall begin to be subjected to a slight displacement starting approximately at midnight, and in this fashion the watch user may become aware during the period from midnight to one oclock that a change of dayof-the-week is taking place.
  • this time-gap is of great significance for achieving correction; it allows embodying, by means of the extremely simple mechanism that has just been described, independent corrections for the date and for the day of the week.
  • the mechanism described above may be incorporated into any date and day-of-the-week calendar watch, whether with a mechanical or with an electrical movement.
  • the diverse components of this mechanism such as the wheel-and-pinions 8 and 5, may also be executed in a manner different from that illustrated in the drawing.
  • one may embody a wheel-and-pinion such as wheel-and-pinion 8 functioning in concert with the peripheral elements of wheel-and-pinion 5 in such manner as to serve solely for correction, wheel-andpinion 8 for instance being brought into active position by an axial displacement when the winding crown is being put into the correction position.
  • automatic commutation of the date and day-of-the-week indicating organs might be achieved by other means controlled from the movement.
  • a calendar watch comprising date and day-of-theweek indicating organs and coaxially located on the movement, further a correction mechanism itself comprising a calendar wheel-and-pinion and means for activating said wheel-and-pinion from the outside of the watch, this wheel-and-pinion being provided with two driving elements, one of which functions in concert with the date-indicating organ and the other of which functions in concert with the day-of-the-week indicating organ, thus characterized in that said driving elements are fastened to said calendar wheel-and-pinion and are apart, one from another, on said wheel-andpinion, by an angle NOT 180, and that said indicating organs are kept at rest by pivoting jumpers biased by springs into such positions that their toothings are asymmetric with respect to the line from the common center of said indicating organs to the center of said rotating wheeland-pinion.
  • a calendar watch according to claim 1, thus characterized in that the movements hour wheel is made up of a flat disk fastened to a plastic part comprising a sleeve acting as the pipe of the hour wheel, a peripheral part in the shape of a toothed disk driving said calendar wheel-and-pinion and is further made up of at least one element elastically connected to said sleeve and so made as to press against an element of the movement frame to eliminate axial play in the hour wheeland-pinion.
  • a calendar watch according to claim 1 thus characterized in that the two driving elements are located at difierent levels and mesh, the one with the inside toothing of a date ring, the other with the outer toothing of a day-of-the-week disk.
  • a calendar watch according to claim 3 thus characterized in that the toothing of the day-of-the-week disk is of fourteen teeth and that this disk presents on its periphery the sequence of the days of the week, repeated twice.
  • a calendar watch according to claim 3 thus characterized in that said calendar wheel-and-pinion is of one piece of a plastic material and comprises a disk with said toothed sectors and a hub, one of the driving elements extending laterally from said hub above a cutout in the disk.
  • a calendar watch according to claim 1 thus characterized in that said calendar wheel-and-pinion is coupled by means of gearing to the movements hour wheel-and-pinion, the gearing imparting a rapid rotation of one-half revolution to said calendar wheel-andpinion during each full revolution of the said hour wheel-and-pinion.
  • a calendar watch according to claim 8 thus characterized in that the toothed sector of disk fastened to the hour wheel-and-pinion comprises three teeth whereas each toothed sector of the calendar wheeland-pinion comprises four teeth.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)
US00240118A 1971-04-16 1972-03-31 Calendar watch day-date driving and correcting means Expired - Lifetime US3735582A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH556671A CH588728B5 (enrdf_load_stackoverflow) 1971-04-16 1971-04-16

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US3735582A true US3735582A (en) 1973-05-29

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US00240118A Expired - Lifetime US3735582A (en) 1971-04-16 1972-03-31 Calendar watch day-date driving and correcting means

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US (1) US3735582A (enrdf_load_stackoverflow)
CH (2) CH588728B5 (enrdf_load_stackoverflow)
DE (1) DE2213999C3 (enrdf_load_stackoverflow)
FR (1) FR2133578B1 (enrdf_load_stackoverflow)
GB (1) GB1378249A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3789602A (en) * 1971-10-07 1974-02-05 Suwa Seikosha Kk Day-date advancing structure for a timepiece
US20200050152A1 (en) * 2018-08-09 2020-02-13 Rolex Sa Timepiece calendar device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859783A (en) * 1974-04-08 1975-01-14 Timex Corp Day-date calendar mechanism
GB2253285A (en) * 1991-02-26 1992-09-02 Simon Joseph Greenock Timepiece

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3436905A (en) * 1966-01-11 1969-04-08 Ebauchesfabrik Eta Ag Watch having improved means for driving date and day-of-the-week indicating members
US3695029A (en) * 1970-06-01 1972-10-03 Gruen Ind Inc Calendar day and date watch

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1568274A (enrdf_load_stackoverflow) * 1968-03-25 1969-05-23

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3436905A (en) * 1966-01-11 1969-04-08 Ebauchesfabrik Eta Ag Watch having improved means for driving date and day-of-the-week indicating members
US3695029A (en) * 1970-06-01 1972-10-03 Gruen Ind Inc Calendar day and date watch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3789602A (en) * 1971-10-07 1974-02-05 Suwa Seikosha Kk Day-date advancing structure for a timepiece
US20200050152A1 (en) * 2018-08-09 2020-02-13 Rolex Sa Timepiece calendar device
US11921462B2 (en) * 2018-08-09 2024-03-05 Rolex Sa Timepiece calendar device

Also Published As

Publication number Publication date
CH588728B5 (enrdf_load_stackoverflow) 1977-06-15
DE2213999B2 (de) 1974-09-19
CH556671A4 (enrdf_load_stackoverflow) 1976-10-15
DE2213999C3 (de) 1975-05-07
FR2133578A1 (enrdf_load_stackoverflow) 1972-12-01
GB1378249A (en) 1974-12-27
FR2133578B1 (enrdf_load_stackoverflow) 1976-08-06
DE2213999A1 (de) 1972-10-26

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