Day and date corrector mechanism for a watch

Claim 1

In a calendar watch having a longitudinally displaceable winding stem disposable in at least three predetermined positions, mainspring winding means, hand setting means, day setting and display means, and date setting and display means, the improvement which comprises a pivotable setting lever coupled to said winding stem for pivoting in response to the longitudinal displacement of said winding stem and being formed with a quadrilateral aperture therein; a pivotable corrector wheel lever having a portion thereof projecting into said setting lever aperture for guiding the pivotable displacement of said corrector wheel lever; and a corrector wheel rotatably mounted on said corrector wheel lever for displacement therewith, said winding stem being operatively coupled to said mainspring winding means at a first of the predetermined positions thereof, to said corrector wheel at a second of said predetermined positions, and to said hand setting means at a third of said predetermined positions, said setting lever aperture and corrector wheel lever being placed to retain said corrector wheel in a neutral position out of operative engagement with said day setting and display means and said date setting and display means when said winding stem is in said first and third of said predetermined positions, and to permit said corrector wheel lever to selectively rock between a first placement of said corrector wheel in operative engagement with said day setting and display means for day correction and a second placement of said corrector wheel in operative engagement with said date setting and display means for date correction when said winding stem is disposed in the second of said predetermined positions.