US3672156A - Break prevention device for calendar advancing of a calendar watch - Google Patents

Break prevention device for calendar advancing of a calendar watch Download PDF

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Publication number
US3672156A
US3672156A US150110A US3672156DA US3672156A US 3672156 A US3672156 A US 3672156A US 150110 A US150110 A US 150110A US 3672156D A US3672156D A US 3672156DA US 3672156 A US3672156 A US 3672156A
Authority
US
United States
Prior art keywords
calendar
wheel
advancing
prevention device
break prevention
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
US150110A
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English (en)
Inventor
Mamoru Miyasaka
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 US3672156A publication Critical patent/US3672156A/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
    • G04B19/253—Driving or releasing mechanisms
    • G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
    • 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
    • G04B13/00—Gearwork
    • G04B13/002—Gearwork where rotation in one direction is changed into a stepping movement
    • 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
    • G04B19/25353—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement

Definitions

  • date correcting may be effected by the correcting wheel 7 even while date advancing tooth 3 advances the date wheel 2. In such circumstances. as shown in FIG. 3, date advancing tooth 3 is pushed downwards along slope 4 by the rected quickly. If the user applies astrong force to the mechanism without knowing these facts, the calendar advancing device, the calendar correcting device, the calendar gear train, and the minute wheel gear train may bebroken. Therefore, in order to prevent this, it is necessary to use an intricate mechanism associated with the finger for calendar advancing.
  • a break prevention device for a calendar watch including a calendar advancing wheel having an elongated adjusting tooth formed with a partial slope at its end and resiliently displaceable out of-the plane of the calendar wheel when said slope is engaged by a calendar wheel tooth.
  • the object of thisinvention is to provide a break prevention device for a calendar advancing finger which is simple and effective without increasing the number of parts in the watch.
  • FIG. I is a plan view of an embodiment of the present inven- DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • a date advancing wheel 1 is equipped with a date advancing tooth 3 which is made longer than the other teeth in teeth of date wheel 2 and moved into hole 6 of the plate. Accordingly, breakage on account of date correction is avoided.
  • said date advancing wheel when the date advancing wheel is in a position to advance the date wheel 2, said date advancing wheel may be reciprocated in its position to advance the teeth of the date wheel one by one. In this manner, date correcting may be easily performed in watches having no date correcting mechanism.
  • date advancing wheel 1 is rotated one complete revolution each day by a transmitting wheel 5 mounted on an hour wheel.
  • the end of the date advancing tooth 3 has a partial slope 4 at its end as shown in FIG. 2, said date advancing tooth having elasticity, so that it can be bent up and down.
  • a hole 6 in' the plate is provided in the region between date wheel 2 and date advancing wheel 1 so that the date advancing tooth can be bent downwardly.
  • a date cor-' recting wheel 7 is placed so as to correct the date wheel, said date correcting wheel being rotated through a crown in a manner not shown.
  • rangement according to the invention has many advantages in respect of manufacturing, cost and use.
  • this construction is usable in the other advancing mechanisms such as the month advancing or day advancing mechanisms.
  • a break prevention device for a calendar watch comprising a rotatable calendar wheel'having a plurality of teeth; and a calendar advancing wheel having at least one elongated advancing tooth positioned for cooperative engagement with said calendar wheel teeth for the incremental advancing of said calendar wheel in response to the rotation of said calendar advancing wheel in a first direction, said advancing tooth being formed with a sloped region adjacent its end and being resiliently displaceable out of the plane of said calendar wheel teeth, whereby said advancing tooth drives said calendar wheel when rotated in a first direction, while permitting said calendar wheel to rotate in a second direction opposed to said first direction.
  • a break prevention device as recited in claim said calendar wheel is a month wheel.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
US150110A 1970-06-11 1971-06-04 Break prevention device for calendar advancing of a calendar watch Expired - Lifetime US3672156A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5705570 1970-06-11

Publications (1)

Publication Number Publication Date
US3672156A true US3672156A (en) 1972-06-27

Family

ID=13044743

Family Applications (1)

Application Number Title Priority Date Filing Date
US150110A Expired - Lifetime US3672156A (en) 1970-06-11 1971-06-04 Break prevention device for calendar advancing of a calendar watch

Country Status (4)

Country Link
US (1) US3672156A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH537609A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1318326A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
MY (1) MY7600222A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5368261A (en) * 1992-12-17 1994-11-29 Panduit Corp. Cable mount and fixture
US20170205769A1 (en) * 2016-01-18 2017-07-20 Eta Sa Manufacture Horlogere Suisse Timepiece movement including an analogue display

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3939073B2 (ja) * 2000-03-31 2007-06-27 セイコーインスツル株式会社 カレンダ機構付き時計

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH369406A (de) * 1961-02-15 1963-01-31 Brac Ag Kalenderuhr
CH412724A (de) * 1964-07-16 1965-11-30 Ebauches Sa Kalenderuhrwerk

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH369406A (de) * 1961-02-15 1963-01-31 Brac Ag Kalenderuhr
CH412724A (de) * 1964-07-16 1965-11-30 Ebauches Sa Kalenderuhrwerk

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5368261A (en) * 1992-12-17 1994-11-29 Panduit Corp. Cable mount and fixture
US20170205769A1 (en) * 2016-01-18 2017-07-20 Eta Sa Manufacture Horlogere Suisse Timepiece movement including an analogue display
US10054907B2 (en) * 2016-01-18 2018-08-21 Eta Sa Manufacture Horlogere Suisse Timepiece movement including an analogue display

Also Published As

Publication number Publication date
CH853171A4 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-01-31
MY7600222A (en) 1976-12-31
GB1318326A (en) 1973-05-31
CH537609A (fr) 1973-07-13

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