A watch movement has a setting mechanism with a pull-out winding shaft enabling a step-by-step setting of solely the hour hand when the shaft is in an intermediate position between a pushed-in winding position and a pulled-out time-setting position. Said mechanism comprises a sliding link carrying a correcting wheel permanently in mesh with a pinion which in turn is in mesh with a sliding pinion on the shaft in both the intermediate position and the pulled-out position. In the intermediate position of the shaft, the correcting wheel meshes with a wheel carrying at least one toothed sector, said sector being adapted to drive the hour hand through given angular steps each corresponding to 1 hour.

A three position detent arrangement for facilitating axial positioning of the rotatable stem of a wristwatch in order to enable the wearer to locate the proper axial position. Frusto-conical surfaces of selectively different included angles are employed to provide steep and shallow slopes for the detent spring, so that the steeper slopes require relatively higher force to move from the intermediate position to either end position. This enables the operator to locate any of the three positions with assurance.

A snap mechanism for a timepiece having a plurality of time displays in which either a first hour wheel or a second hour wheel is provided with saw teeth, and between the first and second hour wheels there are interposed a sliding member having saw teeth which are engaged with the saw teeth on the particular hour wheel and a spring pressing the sliding member so that the saw teeth are in engagement. The first and second hour wheels, sliding member and spring are assembled as a self-contained unit.

A time adjustment assembly for a timepiece comprises a fast hour wheel that is movable between a first position where it is not rotationally engageable with the hour wheel and a second position where it is rotationally engageable with the hour wheel; a corrector wheel, mounted on the setting stem, for rotating the fast hour wheel; and a setting spring selectively engageable with the fast hour wheel to move the fast hour wheel between the fast hour wheel's first position and second position; wherein when the fast hour wheel is in rotational engagement with the hour wheel the setting stem is out of engagement with the setting wheel and an hour hand is movable independently of the minute hand via the rotation of the setting stem.

A timepiece with setting mechanism including a sliding gear for correcting the hour indicator of the timepiece. The sliding gear is controlled by a control stem movable between a working position in which the gear acts on the hour indicator and a rest position in which the gear is inoperative. A lever operable by a trigger-piece acts on the sliding gear to maintain the same in its rest position when the stem is in its setting position.