US3601976A - Calendar watch - Google Patents

Calendar watch Download PDF

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Publication number
US3601976A
US3601976A US857685A US3601976DA US3601976A US 3601976 A US3601976 A US 3601976A US 857685 A US857685 A US 857685A US 3601976D A US3601976D A US 3601976DA US 3601976 A US3601976 A US 3601976A
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US
United States
Prior art keywords
cam
crown
shaft
calendar
watch
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
US857685A
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English (en)
Inventor
Jean Tripet
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.)
Gruen Industries Inc
Original Assignee
Gruen Industries Inc
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 Gruen Industries Inc filed Critical Gruen Industries Inc
Application granted granted Critical
Publication of US3601976A publication Critical patent/US3601976A/en
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 calendar watch date indicator drive mechanism including a rotatably driven cam carried by a shaft slidably disposed in a guide groove, the cam being effective, in combination with a jumper, to cause a delayed, sharp, rotational advance of the date indicator means when sliding movement of the cam is mechanically arrested.
  • JEAN TRIP/5T v I CALENDAR WATCH This invention relates generally to improvements in timepieces such as clocks, watches, and similar time keeping instruments. More particularly, the invention is directed to improvements in clocks, watches, and the like by means of which more effective and precise shifting of date indicator means is effected. Specifically, the present invention has for its primary purpose the provision of improved means by which date indication in a watch may be rendered positive, and changes from date-to-date' may be sharp. I
  • a principal object of the present invention is to provide in a timepiece automatic means operative to effect a periodic shifting of date indicia means, the shift being sharp and precise.
  • Arelated object of the invention is to provide in a timepiece, including date indicia means, an improved mechanism ensuring that shift of the, date indicating means each 24-hour period is for a full or complete incremental step.
  • Yet another object of the invention is to provide in a timepiece which includes date indicia means a date indicia drive-means operating in conjunction with a jumper and detent assembly to effect a delayed, precise, and sharp shifting of the date indicator means at a predetermined instance each 24- hour period.
  • Still another object of the invention is to provide in a timepiece which includes date indicating means a mechanism which obviates gradual shifting of the indicator means as contrasted with a sharp, substantially instantaneous shift.
  • a related object of the invention is to provide in a timepiece which includes date indicating means a spring-loaded drive assembly precluding slack and free, uncontrolled movement of date carrying indicia means.
  • a general object of the invention is to effect the date shifting through the driving medium of the clock mechanism itself, without any major alteration in the watch movement.
  • FIG. 1 is a face view of a timepiece with the fixed dial removed to illustrate, schematically, oneform of the date indicating shifting mechanism of the invention
  • FIG. 2 is a face view similar to FIG. 1 and illustrating a second position of the calendar crownadvancing cam of the invention. 7
  • the aims and objects of the invention are accomplished by providing, in a date indicating watch, a calendar crown ad vancing cam whichundergoes sliding as well as rotational movement to effect, in combination with a spring-loaded jumper assembly, a delayed, sharp shift of the date carrying calendar crown a full incremental step.
  • the usual drive means of the watch mechanism is relied upon, and the date shift is accomplished at each, predetermined 24-hour period.
  • the illustrative example provided in the drawing shows one fonn of means for effecting the incremental shift of the calendar crown, automatically.
  • the timepiece itself contains clock work mechanism of the usual type well known in the art;'the mechanism is, therefore, not illustrated.
  • the clock work mechanism may be either mechanically or electrically operated, a mechanically operated mechanism being indicated more or less diagrammatically, as its particular form does not constitute an essential part of the invention and needs no description here beyond an indication of the functional linkage.
  • FIG. 1 a calendar crown 10 carrying on its top surface date indicating means 14 in an annular array.
  • the date indicating means comprise the numbers l3l, these numbers appearing successively and being viewed through a window formed in the watch dial (not shown), all as is well known in the relevant art.
  • the collarlike or ringlike calendar crown 1.0 is integrally formed with inwardly directed teeth or cogs 18, the arcuate spacing of which is correlated with the positions of the date indicating numbers 14, so that upon each incremental shift of the calendar crown, the nextnumerical date indicator'appears in the window in the watch face.
  • the purpose of the calendar crown 10 is to advance the date indicating means or date indicia l4 step-bystep each 24-hour period.
  • rotation of the calendar crown 10 is effected through a cam 22 rotatably supported on a cam shaft 24.
  • the cam 22 is carriedby or secured mechanically to an intermediary wheel or. gear wheel 28.
  • the intermediary wheel 28 engages with a pinion 30 which is fixedly connected to a cog wheel 34, the latter engaging the watch hour wheel 38, so that the driven hour wheel, in turn, imparts rotary motion to the cam 22.
  • the calendar crown engages a detent assembly or jumper assembly 44 which is effective to ensure precise, stepwise incremental advancement of the calendar crown at 24-hour intervals.
  • the detent assembly 44 ineludes a pivotally mounted pawl 46 which carries an integral tongue 50, the tongue being resiliently urged into engagement with the teeth 18 of the calendar crown 10 by means of a spring 52.
  • the tongue 50 is provided with angled or sloping faces 54 and 56 which project into the interdental space 60 between adjacent teeth 18 and bear against edge portions of the teeth to retain the calendar crown fixed and stable against inadvertent shifting or movement and to ensure positive mechanical action.
  • cam 22 functions. That is, it undergoes not only rotational movement but sliding or pivotal movement as well.
  • the cam shaft 24 is slidably disposed in a guide groove 70 formed in the platen or plate 74 of the watch body. In the position of the cam shown in FIG. 1, the cam shaft 24 is at an upper extremity of the groove 70, the position assumed in' response to spring pressure applied against the cam 22 by the return spring 78, the latter being secured in a housing of the platen 74. Asshown, the spring 78 resiliently urges the cam 22 to the extreme position occupied.
  • the cam 22 is integrally formed with a digit, projection, or finger 86 which, in the position of the cam shown in FIG. 1 bears against a side of one of the teeth or cogs 18 of the calendar crown 10, the digit 86 projecting only slightly into the interdental space between adjacent teeth of the calendar crown.
  • the projection or digit 86 slides against the flange of the tooth or cog l8 and penetrates deeper and deeper into the interdental space 60 formed by the cog l8 and the next adjacent cog.
  • the intermediary wheel 28 upon which the cam 22 is mounted and which bears against the return spring 78 brings the spring leaf into positive contact against the wall of its housing 80, precluding further movement of the cam shaft 24 through the cam guide groove 70. Since the hour wheel 35 and its associated linkage including cog wheel 34 and pinion 30 continue to rotate the intermediary wheel 28 clockwise, the wheel-carried cam 22 acts to advance the calendar crown through pressure applied to the cog 18 by the cam digit 86.
  • the stop could consist of the end wall 96 of the guide groove 70.
  • the return spring 78 could bear against the cam itself or against the cam shaft 22 instead of bearing on the intermediary wheel 28.
  • said mechanism comprising, in combination,
  • projection means carried by said cam and rotatable therewith, said projection means engaging cooperating said teeth of said movable crown to urge said crown annularly in incremental steps at 24-hour intervals,
  • cam-carried shaft extending transversely of said cam, said shaft extending into and slidably disposed in said guide groove of said platen for reciprocal movement of said cam between a rest position and a displaced position, return spring means resiliently urging said cam and camcarried shaft toward said rest position and opposing travel of said cam toward said displaced position,
  • said cam being responsive to pressure of said projection means against one of said teeth of said movable crown to move along said groove in said platen to said displaced position and to bring said cam into positive engagement against mechanical stop means carried by said watch,
  • said detent means comprising, in combination, a pivotally mounted pawl including tongue means integral therewith,
  • said spring means opposing inadvertent, casual, gradual and uncontrolled annular shifting of said ring, yet responsive to positive opposing force transmitted thereagainst through said cam to permit sharp, angular displacement of said movable crown in finite fixed steps definedby spacing of adjacent said teeth of said ring and corresponding to arcuate separation between adjacent said date indicia carried by said calendar crown,
  • said return spring means bottoming against said wall to preclude further sliding displacement of said cam shaft in said guide groove.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
US857685A 1968-09-16 1969-09-15 Calendar watch Expired - Lifetime US3601976A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1384168A CH497729A (fr) 1968-09-16 1968-09-16 Montre à quantième

Publications (1)

Publication Number Publication Date
US3601976A true US3601976A (en) 1971-08-31

Family

ID=4395790

Family Applications (1)

Application Number Title Priority Date Filing Date
US857685A Expired - Lifetime US3601976A (en) 1968-09-16 1969-09-15 Calendar watch

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US (1) US3601976A (enrdf_load_stackoverflow)
CH (2) CH1384168A4 (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3695029A (en) * 1970-06-01 1972-10-03 Gruen Ind Inc Calendar day and date watch
US3751901A (en) * 1971-11-26 1973-08-14 Bifora Uhren Timepiece calendar information changing apparatus
US4142363A (en) * 1976-05-03 1979-03-06 Ebauches Tavannes S.A. Calendar watch movement with date-indicating member

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB800467A (en) * 1955-08-19 1958-08-27 Rolex Montres Improvements in or relating to calendar clockwork
CH353683A (fr) * 1959-03-17 1961-04-15 Fontainemelon Horlogerie Pièce d'horlogerie à quantième
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
CH425641A (fr) * 1964-05-11 1967-06-15 Ebauches Bettlach Sa Montre-calendrier
CH460645A (fr) * 1966-02-25 1968-09-30 Ebauches Sa Pièce d'horlogerie à calendrier
US3427799A (en) * 1966-02-22 1969-02-18 Ebauches Sa Spring-loaded instantaneous date indicator stepper and indexer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB800467A (en) * 1955-08-19 1958-08-27 Rolex Montres Improvements in or relating to calendar clockwork
CH353683A (fr) * 1959-03-17 1961-04-15 Fontainemelon Horlogerie Pièce d'horlogerie à quantième
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
CH425641A (fr) * 1964-05-11 1967-06-15 Ebauches Bettlach Sa Montre-calendrier
US3427799A (en) * 1966-02-22 1969-02-18 Ebauches Sa Spring-loaded instantaneous date indicator stepper and indexer
CH460645A (fr) * 1966-02-25 1968-09-30 Ebauches Sa Pièce d'horlogerie à calendrier
US3449905A (en) * 1966-02-25 1969-06-17 Ebauches Sa Calendar timepiece

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3695029A (en) * 1970-06-01 1972-10-03 Gruen Ind Inc Calendar day and date watch
US3751901A (en) * 1971-11-26 1973-08-14 Bifora Uhren Timepiece calendar information changing apparatus
US4142363A (en) * 1976-05-03 1979-03-06 Ebauches Tavannes S.A. Calendar watch movement with date-indicating member

Also Published As

Publication number Publication date
CH1384168A4 (enrdf_load_stackoverflow) 1970-05-29
CH497729A (fr) 1970-05-29

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