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JPS5578274A - No correction calendar set at end of month for watch - Google Patents

No correction calendar set at end of month for watch

Info

Publication number
JPS5578274A
JPS5578274A JP15218378A JP15218378A JPS5578274A JP S5578274 A JPS5578274 A JP S5578274A JP 15218378 A JP15218378 A JP 15218378A JP 15218378 A JP15218378 A JP 15218378A JP S5578274 A JPS5578274 A JP S5578274A
Authority
JP
Japan
Prior art keywords
month
discrimination
correction
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.)
Pending
Application number
JP15218378A
Other languages
Japanese (ja)
Inventor
Minoru Watanabe
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
Priority to JP15218378A priority Critical patent/JPS5578274A/en
Publication of JPS5578274A publication Critical patent/JPS5578274A/en
Pending legal-status Critical Current

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  • Electromechanical Clocks (AREA)

Abstract

PURPOSE: To establish the calendar set of no correction for end of month in which the user required no date correction at the end of month, by providing the means discriminating 28, 29, 30, and 31st at the end of month and the month discrimination means, in the calendar set of watches.
CONSTITUTION: The month discrimination cam 18 is provided with the month plate 13, and it is coupled with the month discrimination levers 19a, 19b, 19c provided on the calendar plate 3. The date discrimination lever 20 is inserted around the shaft 21 of the data plate 12, and it latches with the month discrimination levers 19a, 19b, 19c at 28th, 29th, and 30th and it latches with the end of month set lever at the same time. The month discrimination cam 18 discriminates the 31-day months, 30-day months, February in usual year and that in leap year corresponding to the month of the display section, and the end of month set lever performs fast feed corresponding to 28th, 29th and 30th. The user does not need to correct date at all, and the value of practicality of crystal watches having long cell life can be increased.
COPYRIGHT: (C)1980,JPO&Japio
JP15218378A 1978-12-08 1978-12-08 No correction calendar set at end of month for watch Pending JPS5578274A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15218378A JPS5578274A (en) 1978-12-08 1978-12-08 No correction calendar set at end of month for watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15218378A JPS5578274A (en) 1978-12-08 1978-12-08 No correction calendar set at end of month for watch

Publications (1)

Publication Number Publication Date
JPS5578274A true JPS5578274A (en) 1980-06-12

Family

ID=15534861

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15218378A Pending JPS5578274A (en) 1978-12-08 1978-12-08 No correction calendar set at end of month for watch

Country Status (1)

Country Link
JP (1) JPS5578274A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100395672C (en) * 2004-03-16 2008-06-18 伍凌宇 Permanent calendar device for watches
JP2012098285A (en) * 2010-11-02 2012-05-24 La Manufacture D'horlogerie Audemars Piguet & Cie:Sa Calendar display device and calendar watch
JP2012132908A (en) * 2010-12-21 2012-07-12 Swatch Group Research & Development Ltd Shock absorbing bearing for rotating gear of timepiece movement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100395672C (en) * 2004-03-16 2008-06-18 伍凌宇 Permanent calendar device for watches
JP2012098285A (en) * 2010-11-02 2012-05-24 La Manufacture D'horlogerie Audemars Piguet & Cie:Sa Calendar display device and calendar watch
JP2012132908A (en) * 2010-12-21 2012-07-12 Swatch Group Research & Development Ltd Shock absorbing bearing for rotating gear of timepiece movement

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