Timepiece with a universal time display
AssigneeCompagnie des Montres Longines, Francillon S.A.
InventorFrank Vaucher
Life of this patent
Estimating the term…
Abstract
The invention concerns a timepiece including a horometric movement (M) with a dial train (8, 46), at least one hours hand (4) which is mounted on an hours pipe (4a) driven by the dial train, a rotary ring (48) driven by the hours pipe so as to effect one revolution per twenty-four hours, a first display means (3) including a twenty-four-hour hours circle and a second display means including geographic indications respectively indicating various time zones, one of the display means (3) being arranged on the rotary ring (48) in order to be displaced facing the other (5) and in order to furnish with the latter a universal time display, characterized in that it includes a correction mechanism (MC) adapted to act on the hours hand (4) independently from the driving of the rotary ring (48).
Claims7
A timepiece with a universal time display including:
- a watch stem,
- a horometric movement including a dial train,
- an hours pipe,
- an hours hand mounted on said hours pipe and driven by said dial train,
- a rotary ring driven in order to effect one revolution per twenty-four hours,
- a first display means including a twenty-four hour-hours circle,
- a second display means including geographic indications respectively indicating various time zones, one of said display means being arranged on said rotary ring for being displaced with respect to the other of said display means and for furnishing with the latter the universal time display, and--a correction mechanism for acting on said hours hand including a first and a second toothed wheel coaxially mounted on said hours pipe, a jumping device coupling said first and second wheels and means intermediate said first wheel and said ring for permitting said wheel to drive said ring, said first wheel being in gear with said dial train, and being mounted to rotate freely on the hours pipe, said second wheel being secured to said hours pipe for rotation therewith, and means for permitting said second wheel to be operated by said stem for correcting the position of the hours hand without rotating said ring.
Dependencies are inferred from the claim text.