US3609955A - Quick calender correction mechanism of timepiece - Google Patents

Quick calender correction mechanism of timepiece Download PDF

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Publication number
US3609955A
US3609955A US12314A US3609955DA US3609955A US 3609955 A US3609955 A US 3609955A US 12314 A US12314 A US 12314A US 3609955D A US3609955D A US 3609955DA US 3609955 A US3609955 A US 3609955A
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US
United States
Prior art keywords
wheel
correction
stem
calender
lever
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
US12314A
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English (en)
Inventor
Choken Suzuki
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co Ltd
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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Application granted granted Critical
Publication of US3609955A publication Critical patent/US3609955A/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

  • a quick calender correction mechanism for a calendered timepiece comprising a rotatable date ring having rack teeth and rotatably mounted on the conventional plate of the movement of the timepiece; a slidable and rotatable stem mounted in said movement; a clutch wheel slidably mounted on said stem and rotatable in unison with the stem; and motion transmitting means provided operatively between said stern and said ring, the improvements comprise the provision of additional tooth means directly formed on said clutch wheel as a first member for transmitting calender correcting torque from said stem to said ring; and a correction wheel means rotatably mounted on a correction lever means and acting a second member in the above sense, said means comprising a finger wheel and a gear wheel united with each other for performing unitary rotational movement with each other, said gear wheel
  • This invention relates generally to a quick calender correction mechanism. More specifically, it relates to the quick calender correction mechanism which can be operated by rotating the winding stern of the timepiece fitted with such mechanism, upon manual attraction of the stem to a predetermined axial position.
  • a prior calender correction mechanism of the calendered timepiece is designed and arranged in such a way that a calender correction gear wheel is rotatably mounted on a calender correction lever which is arranged coaxially with and in unitary rotation with the conventional setting wheel adapted for engagement with the clutch wheel by adjusting manually the stem to a certain predetermined axial position destined for calender correction.
  • a predetermined relative positioning between the calender correction lever and the conventional setting lever is brought about, for bringing the calender correction wheel into meshing relation with a conventional date ring.
  • the calender correction lever is pivotably mounted on the conventional clutch lever, and an intermediate wheel adapted for engagement with the calender correction wheel is mounted on the clutch lever coaxially therewith.
  • a pivotal movement of the setting lever caused by manual attraction of the winding stem causes a corresponding pivotal movement of the clutch lever, thereby the calender correction wheel on the correction lever being brought into meshing relation with the date calender ring.
  • the main object of the invention is to provide a quick calendar mechanism which can be manipulated at any time during a whole day, without any trouble of mechanical interference of the above .kind having a simplified design and capable of being manufactured at a favourable efficiency on an industrial scale.
  • FIG. 1 taken substantially along the section line 2-2! calender correction mechanism according to this invention and in its read-for-calender correcting position wherein the winding stem has been withdrawn manually a first step of the longitudinal movement of the stem.
  • FIG. 2 is a sectional view of the mechanism shown'in FIG. 1, taken substantially along the section line 2-2 shown therein.
  • FIG. 3 is a similar view to FIG. 1, wherein, however, the correction mechanism is shown with the winding stem fully pushed-in.
  • FIG. 4 is a similar view to FIG. 1, wherein, however, the stem has been withdrawn two manipulating steps.
  • FIG. 5 is a similar view to FIG. 1, illustrating a second embodiment of the invention shown in its winding position.
  • FIG. 6 is a similar view to FIG. 5, showing the second embodiment in its ready-for-calender correcting position.
  • FIG. 7 is a sectional view of the second embodiment, substantially taken along the section 7-7 in FIG. 6.
  • FIG. 8 is a similar view to FIG. 5, illustrating, however, the time-setting position of the mechanism.
  • the numeral 10 denotes a conventional winding stem which is slidably and rotatably mounted in a timepiece which is fitted with the calender correction mechanism according to-this invention to be described in detail.
  • the mounting and bearing means for the stem 10' have been omitted from the drawings on account of their very popularity.
  • the stem 10 has been withdrawn manually one step from the regular rest position thereof, under which the movement, not shown, of the timepiece operates for time measuring and display service.
  • the stem 10 is formed with a ring recess 10a, as usual, for keeping the operational engagement with an engaging pin 15a fixedly mounted on a conventional setting lever 15 which is pivotably mounted by means of a pivot pin 15c on a conventional plate, not shown, of the timepiece movement.
  • the stem 10 is further formed with a round cylindrical part 10b and a. square-sectioned part 100, as usual.
  • a conventional winding pinion 11 formed on its lower surface with a number of clutch teeth 11a is rotatably mounted on said round cylindrical part 10b of stem 10, again as usual.
  • the pinion 11 is also fitted with pinion teeth 11!) and kept in meshing relation with an intermediate gear, not shown, for transmitting winding torque from the stem 10, when manipulated for winding, through the intermediate gear to a conventional barrel drum, not shown.
  • a conventional clutch wheel 12 is slidably and nonturnably mounted on the square-sectioned part 10.
  • the setting wheel 13 is normally kept in meshing with a minute wheel 14, as usual.
  • the setting lever 15 is formed with a projection or pin 15b which is kept in pressure engagement with an engageable end part 16a, comprising working edge portions 16a, 16a" and 16a'", of a calender correction lever 16 which is pivotably mounted by means of a pivot on the plate and formed with a second arm 160.
  • a correction wheel 18 shaped into a twin-finger wheel in the preferred first embodiment is rotatably mounted at 18a on said second arm 160.
  • a correction gear 17 is arranged to be engageable with the peripheral teeth 12c on clutch wheel at right angles with each other.
  • the second arm 16c is formed with an opening 16b through which the pivot pin 19 loosely passes.
  • the correction finger wheel 18 when rotated, drives a date ring 23 through its rack teeth 23a, said date ring being shown only partially.
  • a pressure spring strip 22 is fixedly attached with its root end 22a on the plate by means of a fixing screw 30, while an intermediate point of the spring 22 in proximity to the resilient free end 22b is kept in pressure contact with the periphery of the wheel 18, the correction lever 16 being thus urged resiliently to turn about pivot pin 20 and in the clockwise direction in FIGS. 1, 3 and 4.
  • a cheek spring 21 is arranged to occupy a position under the correction lever 16 and above the plate, not shown, said cheek spring being attached by said pivot 20 formed into a set screw, onto said plate.
  • the cheek spring 21 is formed with a first, a second and a third recess denoted respectively with 21a, 21b and 210, said pin 15b being kept in pressure contact with any one of these recesses, in the operating position of the mechanism, for controlling the resting position of the setting lever 15 and for bringing the cam projection 15d of an engageable recess 24a formed on clutch lever 24.
  • Cheek spring 21 is kept in pressure engagement with a. conventional yoke spring 25 from above, and clutch lever 24 is kept in pressure engagement with the ringshaped recess 12d formed on clutch wheel 12, so that the clutch wheel is resiliently urged to move upwards in FIG. 1.
  • FIG. 3 illustrating the regular operating position for power spring-winding.
  • pin projection 15b of setting lever 15 was kept in pressure engagement with the first recess 21a of cheek spring 21 and the same projection 15b was kept in contact with the uppermost recess part 16a. But, by pulling the stem 10 one step upwards, as was referred to, the projection will be shifted to engage with the second recess 21b, thereby the correction lever 16 being urged resiliently to move clockwise around the pivot or screw 20 under the action exerted by spring 22; and the correction gear 17 being shifted upwards so as to engage with the teeth 12c of clutch wheel 12.
  • correction gear 17 has been disengaged from clutch wheel 12, so that any turning movement may be transmitted to the latter in this case.
  • any member which is pivotable by shifting the stem in its longitudinal direction can be used for the desired driving of the said correction lever 16, within the scope of the invention.
  • the desired calender correcting may be carried out in a quicker manner than in those conventionally used.
  • the clutch wheel is formed additionally with peripheral teeth thereon and highly simplified, motion-transmitting means are arranged to cooperate therewith so as to transmit the necessary calender correction torque therefrom to the date ring. In this way, otherwise idle space existing in the neighborhood of the clutch wheel can be effectively utilized for fitting the essential parts of the calender correction mechanism according to this invention.
  • the mechanism comprises a least possible number of the operating parts of the mechanism.
  • FIGS. 5-8 a second preferred embodiment of the invention will be described. It should be noted that in these figures, same or similar constituent parts of the mechanism are denoted with correspondingly same reference numerals, each being, however, attached with a prime, for easy comparison of the present embodiment with the foregoing one and for better understanding of the invention.
  • FIG. 5 the arrangement is similar to that shown in H FIG. 3, thus representing the power spring-winding position.
  • the setting lever is shaped so as to have somewhat different general configuration, but it has the same function as before.
  • this lever 15' is provided with an engaging pin 15a, a projection or pin 15b; a pivot pin 15c and a cam projection 15d, as before.
  • Constituents 10, 11', 12, 13, 14' and 23' have substantially same configurations and functions as those of the foregoing parts correspondingly denoted in the first embodiment with respective same reference numerals without prime.
  • correction lever 16 has somewhat different configuration from that owned by the corresponding lever 16 in the foregoing embodiment and comprises a combination in effect of correction lever 16, check spring 21 and correction lever spring 22 in the foregoing.
  • the spring portion shown at 22' of this combined correction lever 16' comprises the correction lever spring 22 and the cheek spring 21.
  • the free end of this spring portion 22' is formed with an opening 16b through which a pin 19' passes loosely. Said pin being made integral with both wheels 17 and 18 as before, for allowing a unitary rotation thereof.
  • Numeral 23" denotes a date calender ring in the similar way as before.
  • Clutch lever 24' is made integral with its spring 25' in the present embodiment. Therefore, in spite of substantial difference in the general configurations of clutch lever 24 and its spring 25' from those in the foregoing first embodiment, it will be understood easily that their functions are substantially similar as before.
  • Recesses 21a and 21b formed on the combined correction lever 16 not only serve as those denoted 21a and 21b in the foregoing embodiment, but also serves as those denoted 16a and 16a employed in the foregoing.
  • a further recess 210 which serves not only as that shown at 210, but also as that denoted 1641" in the foregoing embodiment.
  • FIG. 8 corresponds substatnially to that shown in FIG. 4 in the foregoing so that no further analysis may be dispensed with for better understanding of the invention.
  • the calender correction lever 16 and the combined correction lever 16' may be defined as correction lever means.
  • a quick calendar correction mechanism for a calendar timepiece of the type having a rotatable date ring, a rotatably and slidably mounted stem and correcting motion transmitting means including a clutch wheel slidably mounted on and rotatable in unison with said stern operatively connected between said stem and said ring upon movement of said stem to a predetermined position, the improvement comprising, tooth means located on said clutch wheel, correction lever means pivotally mounted in said timepiece for pivotal movement in response to movement of said stem and correction wheel means rotatably mounted on said lever means for transmitting correction motion from said tooth means to said date ring, said correction wheel means being normally disengaged from said tooth means and being selectively engaged with said tooth means upon movement of said stem to said predetermined position.
  • correction wheel means is comprised of a finger wheel and a gear wheel coaxially and unitarily mounted for rotation about a common axis, said gear wheel being arranged for engagement with said tooth means and said finger wheel being arranged for engagement with said date ring.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Operated Clutches (AREA)
  • Electromechanical Clocks (AREA)
US12314A 1969-02-20 1970-02-18 Quick calender correction mechanism of timepiece Expired - Lifetime US3609955A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1969014282U JPS4728699Y1 (enrdf_load_stackoverflow) 1969-02-20 1969-02-20

Publications (1)

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US3609955A true US3609955A (en) 1971-10-05

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Application Number Title Priority Date Filing Date
US12314A Expired - Lifetime US3609955A (en) 1969-02-20 1970-02-18 Quick calender correction mechanism of timepiece

Country Status (5)

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US (1) US3609955A (enrdf_load_stackoverflow)
JP (1) JPS4728699Y1 (enrdf_load_stackoverflow)
DE (1) DE2007666A1 (enrdf_load_stackoverflow)
FR (1) FR2061586B1 (enrdf_load_stackoverflow)
GB (1) GB1306432A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274152A (en) * 1978-04-19 1981-06-16 Kabushiki Kaisha Suwa Seikosha Setting mechanism of a watch
CH684920GA3 (fr) * 1993-08-31 1995-02-15 Ebauchesfabrik Eta Ag Pièce d'horlogerie.
US20220326658A1 (en) * 2021-04-07 2022-10-13 Manufacture D'horlogerie Audemars Piguet Sa Selection and actuation device for a plurality of functions of a watch movement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3667435B1 (fr) 2018-12-10 2022-06-01 Montres Breguet S.A. Systeme de reglage de la position d'un premier mobile dente par rapport a un support sur lequel le premier mobile dente est monte pivotant et piece d'horlogerie comprenant un tel systeme

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH372983A (de) * 1961-10-06 1963-01-31 Brac Ag Uhr mit Datumscheibe
CH412724A (de) * 1964-07-16 1965-11-30 Ebauches Sa Kalenderuhrwerk

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274152A (en) * 1978-04-19 1981-06-16 Kabushiki Kaisha Suwa Seikosha Setting mechanism of a watch
CH684920GA3 (fr) * 1993-08-31 1995-02-15 Ebauchesfabrik Eta Ag Pièce d'horlogerie.
US5392260A (en) * 1993-08-31 1995-02-21 Eta Sa Fabriques D'ebauches Timepiece
EP0640892A1 (fr) * 1993-08-31 1995-03-01 Eta SA Fabriques d'Ebauches Pièce d'horlogerie
US20220326658A1 (en) * 2021-04-07 2022-10-13 Manufacture D'horlogerie Audemars Piguet Sa Selection and actuation device for a plurality of functions of a watch movement
US12147196B2 (en) * 2021-04-07 2024-11-19 Manufacture D'horlogerie Audemars Piguet Sa Selection and actuation device for a plurality of functions of a watch movement

Also Published As

Publication number Publication date
FR2061586A1 (enrdf_load_stackoverflow) 1971-06-25
JPS4728699Y1 (enrdf_load_stackoverflow) 1972-08-29
DE2007666A1 (de) 1970-09-03
GB1306432A (en) 1973-02-14
FR2061586B1 (enrdf_load_stackoverflow) 1974-03-01

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