GB168382A - Improvements in calendar clocks - Google Patents

Improvements in calendar clocks

Info

Publication number
GB168382A
GB168382A GB1450320A GB1450320A GB168382A GB 168382 A GB168382 A GB 168382A GB 1450320 A GB1450320 A GB 1450320A GB 1450320 A GB1450320 A GB 1450320A GB 168382 A GB168382 A GB 168382A
Authority
GB
United Kingdom
Prior art keywords
wheel
arbor
month
day
pointer
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
Application number
GB1450320A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1450320A priority Critical patent/GB168382A/en
Publication of GB168382A publication Critical patent/GB168382A/en
Expired legal-status Critical Current

Links

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
    • 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
    • G04B19/25366—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 manually corrected at the end of months having less than 31 days
    • 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
    • G04B19/241—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars the date is indicated by one or more hands

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

168,382. Johnson, J. May 27, 1920. Calendars and date indicators.-In a calendar clock which exhibits the time, the day of the week, the day of the month, and the month by means of pointers on a common or separate dials the day of the month wheel m is provided with a series of thirty-one pins n and is axially slidable against the action of a, spring for the purpose of manually setting the pointer to compensate for months having less than thirtyone days. The clock wheel h has a pin g adapted to actuate a star wheel f mounted on an arbor i a single tooth e on the wheel f engages a star-wheel d in mesh with a similar wheel c on an arbor b which carries the pointer a indicating the day of the week. A second star-wheel j is mounted on the arbor i and is in gear with a similar wheel k which carries a single tooth or arm l that cooperates with the pins n of the wheel m the arbor o<1> of which carries the date indicating pointer o. Pegs or stops p, p<1>, p<2> of different lengths are provided on the wheel m to co-operate with pins q also of different lengths on a disc r and thereby through wheels s, u actuate the month indicating pointer t. By means of a knob o<2> on the arbor o<1> the wheel m can be moved axially to disengage the arm l and advanced one, two, or three digits according to the month. The exact setting is facilitated by a finger w on the arbor o<1> and a slotted plate x.
GB1450320A 1920-05-27 1920-05-27 Improvements in calendar clocks Expired GB168382A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1450320A GB168382A (en) 1920-05-27 1920-05-27 Improvements in calendar clocks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1450320A GB168382A (en) 1920-05-27 1920-05-27 Improvements in calendar clocks

Publications (1)

Publication Number Publication Date
GB168382A true GB168382A (en) 1921-08-29

Family

ID=10042363

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1450320A Expired GB168382A (en) 1920-05-27 1920-05-27 Improvements in calendar clocks

Country Status (1)

Country Link
GB (1) GB168382A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH673371GA3 (en) * 1988-10-10 1990-03-15

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH673371GA3 (en) * 1988-10-10 1990-03-15
EP0363821A1 (en) * 1988-10-10 1990-04-18 Eta SA Fabriques d'Ebauches Calendar watch with a central date display
US4974242A (en) * 1988-10-10 1990-11-27 Eta Sa Fabriques D'ebauches Calendar watch having a centrally pivoted date indicator

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