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US3616641A - Date and day correcting device of a calendar timepiece - Google Patents

Date and day correcting device of a calendar timepiece Download PDF

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Publication number
US3616641A
US3616641A US38001A US3616641DA US3616641A US 3616641 A US3616641 A US 3616641A US 38001 A US38001 A US 38001A US 3616641D A US3616641D A US 3616641DA US 3616641 A US3616641 A US 3616641A
Authority
US
United States
Prior art keywords
date
day
correcting device
correcting
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
Application number
US38001A
Other languages
English (en)
Inventor
Tooru Komori
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.)
Suwa Seikosha KK
Original Assignee
Suwa Seikosha KK
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 Suwa Seikosha KK filed Critical Suwa Seikosha KK
Application granted granted Critical
Publication of US3616641A publication Critical patent/US3616641A/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
    • 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

  • FIG. 1 is a plan view showing the operation of one embodiment of date and day correcting devices according to the invention when the day indication is corrected;
  • FIG. 2 is a plan view showing the operation of the date and day correcting device according to the invention when the date and day indications are corrected;
  • FIG. 3 is the cross sectional view of date and day correcting device according to the invention.
  • the present invention relates to a date and day correcting device of a calendar timepiece.
  • Various date correcting devices of calendar timepieces have been put to practical use.
  • the correcting devices for setting both date and day have not been developed so much because of its complicated mechanism and difficult operation.
  • the present invention is characterized by the fact that both date and day can be corrected by controlling the pushing stroke of the crown (i.e. long or short), in addition to which the mechanism of the device is simple and the operation is easy.
  • 1 is a crown secured to a winding stem 2.
  • 3 is a setting lever engaging with a circular recess provided in the winding stem 2.
  • 4 is a clutch wheel.
  • 5 is a clutch lever engaging with a circular recess of the clutch wheel 4.
  • 6 is a setting wheel adapted to engage with the clutch wheel 4.
  • 7 is a minute wheel engaging with the setting wheel 6.
  • a date and day correcting member which is provided with a pin 8 engaging with a head portion 3a of the setting lever 3, an end portion 9a adapted to engage with the teeth portion of a daily star 12, a date wheel correcting portion 9b adapted to engage with the teeth of the date wheel and the portion 90 pressing against a corrector spring 11 for putting back the date and day correcting member 9, the setting lever 3, the winding stem 2 and the crown 1 to its normal position respectively.
  • 13 is a date wheel and 14 is a date jumper.
  • 15 is a date jumper spring.
  • FIG. 1 shows the operating position in which only the day indication can be operated (hereinafter referred to as the first position).
  • the setting lever 3 and the date and day correcting member 9 can be operated to the position shown by the dotted line by pushing the crown 1 from the normal position shown by a solid line.
  • the end portion 9a of the date and day correcting member then rotates on the axis 10 and the daily star is advanced by one tooth, that is, the day indication is corrected. Further, in this position the date wheel correcting portion 9b of the date and day correcting member 9 is out of the position in which the date wheel 13 can be corrected. Therefore, only the day indication can be kept corrected by returning the crown from the above position to the normal position by means of the corrector spring.
  • FIG. 2 shows the operating position in which the daily star and the date wheel can be operated by pushing the crown 41 to its greatest depth from the first position shown in FIG. 1. If the date and day correcting member 9 rotates away from normal position by pushing the crown 1 to its greatest depth, the daily star 12 is first advanced by one tooth by means of the end portion 9a, and secondly the date wheel 13 is advanced by one tooth by means of the correcting portion 9b. Thereby the date and day indications can be changed respectively by one day. If the crown is free from pushing, the date and day correcting member 9 and the crown 1 can be returned to their normal positions by the corrector spring 11.
  • the date and day correcting device makes it possible to correct the date indication and the day indication by the rotating angle (large or small) of the date and day correcting member. Further, the device according to the invention is advantageous inasmuch as it includes a small number of parts and the date and the day correction can be performed with an easy operation.
  • a calendar watch having a winding stem, a date indicator, and a day-of-week indicator, the improvement comprising single means for correction of both date and day-of-week indicators, said single means being pivotable about a point in response to two stages of axial movement of the winding stern, whereby during the first stage of movement, said single means engages the day-of-week indicator and moves it one unit, and during the second stage of movement, said single means engages the date indicator and moves it one unit.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
US38001A 1969-05-21 1970-05-18 Date and day correcting device of a calendar timepiece Expired - Lifetime US3616641A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3893069 1969-05-21

Publications (1)

Publication Number Publication Date
US3616641A true US3616641A (en) 1971-11-02

Family

ID=12538928

Family Applications (1)

Application Number Title Priority Date Filing Date
US38001A Expired - Lifetime US3616641A (en) 1969-05-21 1970-05-18 Date and day correcting device of a calendar timepiece

Country Status (4)

Country Link
US (1) US3616641A (uk)
CH (2) CH755170A4 (uk)
GB (1) GB1304608A (uk)
MY (1) MY7600168A (uk)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3969888A (en) * 1972-12-11 1976-07-20 Cyril Veuilleumier Driving mechanism for day-date calendar device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3969888A (en) * 1972-12-11 1976-07-20 Cyril Veuilleumier Driving mechanism for day-date calendar device

Also Published As

Publication number Publication date
GB1304608A (uk) 1973-01-24
CH546974A (uk) 1974-03-15
CH755170A4 (uk) 1973-09-28
MY7600168A (en) 1976-12-31

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