US3659413A - Single position date or day corrector with gravity controlled clutch - Google Patents

Single position date or day corrector with gravity controlled clutch Download PDF

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Publication number
US3659413A
US3659413A US124695A US3659413DA US3659413A US 3659413 A US3659413 A US 3659413A US 124695 A US124695 A US 124695A US 3659413D A US3659413D A US 3659413DA US 3659413 A US3659413 A US 3659413A
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US
United States
Prior art keywords
lever
dial
day
date
calendar
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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US124695A
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English (en)
Inventor
Kazuo Tanaka
Toshihiko Kanayama
Tetuya Yasuda
Hidetaka Tutiya
Yoshio Kikuchi
Takeo Muto
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Citizen Watch Co Ltd
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Citizen Watch Co Ltd
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Application filed by Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
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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

  • SHEET 2 (IF 5 SINGLE POSITION DATE OR DAY CORRECIOR WITH GRAVITY CONTROLLED CLUTCH
  • This invention relates to improvements in and relating to the calendar correction mechanism fora timepiece, comprising a stationary member, preferably a plate, a date calendar dial rotatably mounted thereon, a day star wheel for a day calendar dial and rotatably mounted on said plate, an elongated operating stem at least slidably mounted onsaid plate and motion-transmitting means provided between said operating stem, on the one hand, and said date calendar dial and said star wheel, on the other hand.
  • the main object of the invention resides in the provision of a unique mechanism by which the dayor date calendar correction can be automatically and mechanically switched on by alteration of the special timepiece position so as to alter the gravity-acting direction on the timepiece.
  • FIG. 1 is a plan view of essential parts of a first embodiment of the invention.
  • FIG. 2 is a plan view of several preferred parts of the first embodiment wherein a date calendar correcting operation is being carried out.
  • FIG. 3 is a plan view of main working pars of a second embodiment of the invention.
  • FIG. 4 is a schematic and simplified plan view, illustrative of a correcting operation by pulling out a manipulating member to a first stage position.
  • FIG. 5 is a similarview to FIG. 4, wherein, however, the manipulating member has been pulled out to its second operating position for attaining the time-setting position.
  • FIGS. 6 and 7 are plan views for the explanation of the date calendar-correcting operation of the second embodiment.
  • FIG. 8 and 9 are similar views to FIGS. 6 and 7, illustrating, however, the day calendar-correcting operation of the second embodiment.
  • FIG. 10 is a plan view of a third embodiment of the invention.
  • FIGS. 1 l and 12 show several main working members of the third embodiment, for illustrating the dateand day calendar correcting operations, respectively.
  • FIG. I3 is a perspective view, illustrating mainly the mutual relationship among day drive wheel, date drive wheel, day drive pawl, date drive pawl and the like, as employed in the third embodiment of the invention.
  • the numeral 1 represents a conventional date dial ring, only partially shown, having an inner teeth In and being rotatably mounted on the conventional lower plate 2, although the latter is also only partially shown and the necessary mounting means have been omitted on account of its very popularity.
  • a push button type operating rod 3 is shiftable axially between two points as denoted by respective full line and imaginary chain-dotted line, said rod comprising an elongated stem 3a, a button head 3b made integral therewith at its outer end, and an enlarged inner end 30.
  • This operating rod 3 can be replaced by a conventional winding stern, if necessary.
  • said rod 3 is slidably mounted in a conventional timepiece case which has been omitted from the drawing only for simplicity.
  • Numeral 4 denotes a correction lever which is pivotably mounted at 5 on the plate 2, a correction member 6 being pivotably mounted by a pivotpin 7 on the lever 4.
  • the member 6 is formed with a date feed pawl 60 and a day feed pawl 6b, these pawl parts being thickened relative to the remaining part of the member 6, thereby providing respective weight mass efiects, as will become more clear as the description proceeds.
  • a pressure sp g means 8 comprises a leaf spring 8a made integral with an enlarged base portion 8b, the latter being detachably, yet fixedly attached to the plate 2 by means of a plurality of set screws 20 of which only one is shown as a representative one.
  • the tip end of the leaf spring 8a is kept in pressure contact with said correction lever 4, so as to urge the latter to rotate in counter clockwise direction about pivot pin 5.
  • Numeral 9 represents a conventional day star wheel which is rotatably mounted on the plate 2 by its shaft 19. Although not shown, this star wheel 9 is kept in meshing with a conventional day display dial, not shown.
  • a conventional jumper lever I0 only partially shown, is mounted by its root portion on the plate 2 and kept by its acting tip end in pressure contact with the star wheel 9 for positioning positively each correctingly driven position thereof.
  • the correction member can recede easily and automatically from the motion-checking position, since the correction member 6 is freely rotatable and the engageable pawl parts 60 and 6b are so designed and arranged that they can easily recede from their engaging position with the teeth In and star wheel 9, when the pawls are subjected to a drive force transmitted thereto reversedly from the respective display dials.
  • the numeral 21 represents a conventional winding stem, only partially shown, a clutch wheel 22 being mounted on the stem 21 as usual and kept in meshing engagement with a setting wheel 23, as known per se. This meshing engagement is maintained by a conventional clutch lever 24.
  • a change-over lever 25 is pivotably mounted on the shaft 23a of setting wheel 23 and carries in turn a first and. a second change-over wheel shown at 26 and 27, respectively, these wheels being kept in meshing engagement with said setting wheel 25.
  • a setting lever 30 is pivotably mounted on the conventional lower plate, not shown, of the timepiece movement by a pivot pin 28, an engaging projection 30b being formed integral with the setting lever and kept in engagement with a peripheral groove 210 formed on the stem 21 as known per se.
  • an axial movement exerted manually on the stem 21 can be transmitted as usual to the setting lever 30 which carries a pin 31.
  • the thus invited pivotal movement of the setting lever 30 will be transmitted through said pin 31 to the lever 25 which is caused thereby to perform a pivotal motion about the shaft
  • a correction lever 32 is pivotably mounted on a shaft 33, said lever being resiliently urged by a spring, not shown, so as to perfonn a counter clockwise direction when seen in FIGS. 3 and 4.
  • a resilient and elongated end projection 32a is formed integrally on the correction lever, said projection being kept in pressure and resilient abutment with an end 300 formed on the setting lever 30.
  • a correction-transmitting wheel 34 is rotatably mounted on lever 32 and kept in meshing engagement with a correction wheel 35 carried by a shaft 33.
  • a pin 36 is fixedly mounted on correction wheel 35, a correction-feed pawl 37 being pivotably mounted on said pin 36, said pawl being formed with an irregularly shaped opening 39 kept in contact with a pin 38 fixed on the lower plate.
  • Feed pawl 37 is formed integrally with two separate pawls 42 and 43 which are adapted for engagement, respectively, with date dial 40, only partially shown, and day star wheel 41.
  • FIG. 5 ' showsa relative position of main working parts when the winding stem 21 has been pushed-in to the first or regular or innermost position thereof.
  • clutch wheel 22, setting wheel 23 and second change-over wheel 27 being rotated in synchronism one after another to the conventional spring barrel, not shown, as known per se.
  • FIGS. 6 and 7 are illustrative of such stages of several main working parts of the second embodiments that when the pin 36 has been rotated in opposite directions, illustrating the possibility of performing the necessary corrective feed of date dial 30 for either directional rotation of the pin, resulting in specific movement of the pawl 42 by virtue of uniquely combined movement of the pin guided by contact with the peripheral guide wall surface of the irregularly shaped guide opening 39, as shown by respective chain-dotted lines shown in these figures.
  • FIGS. 8 and 9 Similar representations shown in FIGS. 8 and 9 are such stages wherein the day star 41, only partially shown in these figures, is being driven for performing the necessary display correction. It will be noted that again in this case, either rotational movement of the pin 36 may invite well the necessary correction of the star wheel.
  • numeral generally denotes a wrist watch movement fitted with the calendar correction mechanism constructed in accordance with said third embodiment.
  • the numeral 101 denotes a conventional winding stem which is rotatably and axially slidably mounted through a watch casing, not shown, on the conventional lower plate 130.
  • necessary sealing means and bearing means have substantially omitted from the drawing, this feature being also applicable to the foregoing several embodiments.
  • Winding stem 101 is formed with a peripheral recess, same as before, shown at 101a, with which an integrally projecting part 102a of conventional setting lever 102 is kept in engagement, as known per se, said lever being pivotably mounted on the plate 130 by a pivot pin 103. It will be seen, therefore, that an upward or lowerward axial movement of winding stem 101 will turn the setting lever to rotate partially about its pivot pin 103 in one or the other direction, as the case may be.
  • Setting lever 102 is formed integrally with a further projection 102b which is held pivotable by means of a pin 103 fixedly mounted on the plate 130.
  • Numeral 105 denotes a quick correction-transmitting lever which carries a pin 106 positioned in proximity of one end 105a thereof.
  • a recess 107 is formed on the lever 105 in proximity of another end 105b of said lever 105, said am 102b being kept in cooperative engagement with said recess 107.
  • Setting lever 102 is further formed with a pin 1020 which is kept in contact with one of the fork fingers a and 115b formed one end of an elongated curve-shaped setting lever spring 115 fixedly attached to the plate by means of set screws and 141.
  • This spring 115 has such configuration and arrangement that it exerts a clockwise urging force by its forked end when seen in FIG. 10. Exertion of this clockwise urging force by the spring 115 is normally checked by the pressure contact arrangement between its another fork end finger l15b and a stationary pin 116 which is fixedly mounted on the plate 130. As will become more clear as the description proceeds, the said urging force will be released in case of calendar display correction and transmitted to said pin 102:: for swiveling the setting lever 102 in counter clockwise direction in FIG. 10.
  • Numeral 114 represents a pressure plate which is formed with an elongated resilient arm 114a formed at its end portion with recess means kept in pressure engagement with a pin 102d fixedly mounted on setting lever 102, thereby the latter being normally kept in its suitable position destined for power spring wind-up operation, as is commonly known.
  • Conventional clutch wheel 117 is mounted on the winding stem 101 as before.
  • a change-over lever 142 is pivotably mounted as before and carries rotatably in turn first and second change-over wheels 146 and 147.
  • Conventional setting wheel 143; clutch lever 118; clutch lever spring 119 and its integral resilient arm 119a are arranged as conventionally.
  • Quick correction lever 108 is pivotably mounted on said pin 106, said lever 108 being shaped into a kind of gravity-actuated pendulum and formed at its both sides with pawls 108a and 108b; 1080, respectively, which are adapted for engagement with the inside teeth 111a of date calendar dial ring 111 and day star wheel 121 having seven radial teeth, respectively.
  • Quick correction lever 108 is formed with a guide opening 108d and a stationary pin 109 fixedly mounted on the plate 130 projects into said opening and kept normally in contact with the peripheral wall thereof for limiting the range of pivotal movement of the quick correction lever 108.
  • this lever 108 is formed in proximity of its free or depending end with a horizontally extending, pressed-in recess 110 the rear surface of which is kept in slidable contact with the surface of the plate 130, so as to minimize the frictional resistance during pivotal movement of the correction lever.
  • the date calendar dial ring 111 is fitted with inside teeth 111a which are formed along its whole inside peripheral surface, said dial ring being rotatably mounted on the plate 130 through a number of antifriction balls, rollers and the like conventional means known per se, although not specifically shown.
  • a jumper lever 112 is pivotably mounted on the plate 130 by means of a pivot 150 fixedly mounted thereon, a spring projection 112a of the jumper lever being kept in pressure contact with the dial ring teeth 1110 for exerting a slight spring pressure thereon and thus firmly holding each corrected position of the date dial ring 111.
  • Said jumper lever 112 is formed with a U-shaped spring projection 112b the extreme free end of which abuts against a part of the plate 130.
  • Numeral 113 denotes a checking member which is adapted for checking disadvantageous vertical movement of jumper lever 112, setting lever 114 and the like. The vertical movement is meant by that which directs perpendicular to the drawing paper.
  • a further jumper lever 1130 to be described is made integral with the checker 113, the jumper 113a comprising a spring arm 113d and adapted for exerting springy checking action upon the day star wheel 121 so as to positively, yet provisionally positioning the latter at each adjusted position thereof.
  • said star wheel 121 is rotatably mounted on the plate 130 and kept in meshing with a day dial driven wheel 122 equally mounted rotatably on the plate 130. As shown, the star wheel is provided with seven radial teeth or projections corresponding to a week.
  • the teeth of day drive wheel 122 is arranged to be engaged intermittently by a rising tooth projection 124a formed on the free end of day drive centrically with said wheel 123, thereby the wheel 122 being adapted for being driven.
  • the star wheel can be rotated when desired.
  • Day drive wheel 123 is provided with a date drive pawl 125 comprising an elongated resilient arm 125b having a rising end part 125a, in addition to and at a somewhat lower level from that of said day drive pawl 124.
  • the resilient arm 125b extends partially over an elongated and curved slot 123a, so as to be driven by its tip portion into the latter when received a downwardly urging force exerted by any one of inside teeth 111a upon contact thereof with said rising tip end 125a, as met in the course of a date-correcting operation to be described.
  • pawl member 124 which is arranged coni Day drive pawl 124 is formed with an end portion lMb opposite to said rising end 124a, said portion 124b being bent downwards slightly and being kept in abutment with date driven pawl 125.
  • a manual finger pressure is axially applied to the winding stem 101, so as the watch movement is positioned so that the right-hand side thereof, when seen in FIG. 10, directs downwards, so that pawl 108a on the member 108 may be brought into engagement with dial teeth 111a under the influence of gravity action upon the member 108.
  • the member 108 acts as a kind of gravity-operated clutch member.
  • a manual finger pressure is applied axially upon the outer end or head of winding stern 101 for depressing the latter, so as to shift the setting lever 102 from its chain-dotted line to full line position in FIG. 1 1.
  • the setting lever is rotated in counter clockwise direction in FIG. 11, thereby pin 102c urges setting lever spring 115 to move in counter clockwise direction therein against its owned biasing force, while arm 102b of the lever 102 kept in engagement with a recess 107 formed on lever 105 is brought into pressure contact with the right-hand side wall of said recess so that quick correction-transmitting lever 105 is rotated in clockwise direction.
  • pin 106 on the opposite end of said lever 105 is subjected to such rotational eflort as to shift the lever 108 downwards in FIG. 11. Therefore, the dial 111 is shifted substantially a tooth pitch in its feeding direction.
  • the watch movement When it is desired to perform a day calendar correcting operation, the watch movement is so positioned that the lefthand side thereof directs downwards, so as to bring the gravity-operated clutch element 108 swivels in the opposite direction to that in the case of the date calendar correction.
  • either of the projections 108b and l08c is brought into engagement with one of the teeth on day star wheel 121. Therefore, a reciprocating operation of the winding stem will feed the star wheel by a half tooth pitch, as most clearly be seen from FIG. 12.
  • the other of the tooth projections 108k and 108a will become efiective to engage the star wheel and feed it the remaining half tooth pitch.
  • the day calendar dial can be adjusted as desired.

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US124695A 1970-03-16 1971-03-16 Single position date or day corrector with gravity controlled clutch Expired - Lifetime US3659413A (en)

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JP45021490A JPS4939705B1 (enrdf_load_stackoverflow) 1970-03-16 1970-03-16

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3748848A (en) * 1971-10-29 1973-07-31 Ebauches Sa Day-date timepiece
US3779000A (en) * 1971-10-06 1973-12-18 Suisse Horlogerie Correction device for day-and-date calendar watches
US4028881A (en) * 1974-07-26 1977-06-14 Kabushiki Kaisha Daini Seikosha Mechanism for correcting calendar in a watch
US4244038A (en) * 1978-12-23 1981-01-06 Gebruder Junghans Gmbh Watch having adjustable date and day indicators
US4291397A (en) * 1979-10-15 1981-09-22 Timex Corporation Manual date advance mechanism for a watch
US4766579A (en) * 1986-01-14 1988-08-23 Complications S.A. Timepiece having a control stem correcting mechanism with at least two setting positions
US20140022870A1 (en) * 2011-03-23 2014-01-23 Pequignet S.A. Support for display member of a timepiece movement
EP3882716A1 (fr) * 2020-03-18 2021-09-22 Patek Philippe SA Genève Pièce d'horlogerie comprenant un mobile denté indexé par un sautoir
US11550267B2 (en) 2017-03-22 2023-01-10 Manufacture D'horlogerie Audemars Piguet Sa Device for adjusting the functions of a timepiece

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51142903U (enrdf_load_stackoverflow) * 1975-05-09 1976-11-17
JPS5261606U (enrdf_load_stackoverflow) * 1975-10-17 1977-05-06

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3470688A (en) * 1967-07-26 1969-10-07 Suwa Seikosha Kk Date and day correcting device of a calendar timepiece
US3470687A (en) * 1966-12-15 1969-10-07 Suwa Seikosha Kk Date and day correcting device of a calendar timepiece

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3470687A (en) * 1966-12-15 1969-10-07 Suwa Seikosha Kk Date and day correcting device of a calendar timepiece
US3470688A (en) * 1967-07-26 1969-10-07 Suwa Seikosha Kk Date and day correcting device of a calendar timepiece

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779000A (en) * 1971-10-06 1973-12-18 Suisse Horlogerie Correction device for day-and-date calendar watches
US3748848A (en) * 1971-10-29 1973-07-31 Ebauches Sa Day-date timepiece
US4028881A (en) * 1974-07-26 1977-06-14 Kabushiki Kaisha Daini Seikosha Mechanism for correcting calendar in a watch
US4244038A (en) * 1978-12-23 1981-01-06 Gebruder Junghans Gmbh Watch having adjustable date and day indicators
US4291397A (en) * 1979-10-15 1981-09-22 Timex Corporation Manual date advance mechanism for a watch
US4766579A (en) * 1986-01-14 1988-08-23 Complications S.A. Timepiece having a control stem correcting mechanism with at least two setting positions
US20140022870A1 (en) * 2011-03-23 2014-01-23 Pequignet S.A. Support for display member of a timepiece movement
US8867316B2 (en) * 2011-03-23 2014-10-21 Pequignet S.A. Support for display member of a timepiece movement
US11550267B2 (en) 2017-03-22 2023-01-10 Manufacture D'horlogerie Audemars Piguet Sa Device for adjusting the functions of a timepiece
EP3882716A1 (fr) * 2020-03-18 2021-09-22 Patek Philippe SA Genève Pièce d'horlogerie comprenant un mobile denté indexé par un sautoir

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Publication number Publication date
JPS4939705B1 (enrdf_load_stackoverflow) 1974-10-28

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