Month correcting mechanism for calendar timepieces
AssigneeCitizen Watch Co., Ltd.
InventorsKazuo Teramoto, Minoru Watanabe, Tetuo Matumura
Life of this patent
Estimating the term…
Abstract
A month correcting mechanism for calendar timepieces comprises a month indicating dial having a toothing and a month dial correcting lever assembly adapted to be engaged with the toothing of the month indicating dial. By manually actuating the month dial correcting lever assembly, the month indicating dial may be rotated independently of the date dial to correct the indication of the month.
Claims12
A month correcting mechanism for calendar timepieces comprising a date dial having a toothing:
- a month dial having a toothing, a driving member adapted to engage the toothing of said date dial for driving it one step every 24 hours, a month dial driving device for driving said month dial one step during the rotation of said date dial between the date indications "31" and "1", and a month correcting lever assembly provided to engage with said toothing of said month dial and adapted to be manually actuated to drive said month dial independently of said date dial.
A month correcting mechanism for calendar timepieces comprising:
- a date dial having a toothing, a month dial having a toothing, a driving member adapted to engage the toothing of said date dial for driving it one step every 24 hours, a month dial driving wheel for driving said month dial one step during the rotation of said date dial between the date indications "31" and "1", a month correcting lever assembly comprising a month correcting pawl adapted to be manually actuated, and a month correcting pinion adapted to be rotated by said pawl to drive said month dial independently of said date dial.
A month correcting mechanism for a calendar watch comprising:
- a base plate;
- a date calendar dial ring having thirty one successive date calendar display symbols and mounted for rotation on said base plate;
- a month calendar dial ring having twelve successive month calendar display symbols and concentrically mounted relative to said date calendar dial ring for rotation on said base plate;
- a first driving member operatively connected to said date calendar dial ring for advancing said date calendar dial ring one display symbol every twenty four hours;
- a second driving member operatively connected to said month calendar dial ring for advancing said month calendar display ring at least one display symbol after a predetermined rotation of said date calendar dial ring;
- a month correcting lever assembly operatively mounted adjacent to said month calendar dial ring for manual actuation to advance said month calendar dial ring independently of said date calendar dial ring.
Dependencies are inferred from the claim text.