Abstract: The present invention relates to a lever device (10) of a watch mechanism, comprising a column wheel (16) and a main lever (20) mounted so as to pivot, about a first pivot axis (24), alternately between two stable positions. The main lever (20) comprises an anchor provided with two beaks (21a, 21b) which, in each of the two stable positions, are alternately located, one of them between two columns (17) and the other in contact with a peripheral flank of another column (17). The main lever (20) further comprises a distal part (26, 29) for controlling the watch mechanism. The anchor and the distal part (26, 29) of the lever are arranged to pivot about the first pivot axis (24). The invention also relates to a watch movement comprising a chronograph and the lever device arranged to bring the chronograph from a disengaged configuration to an engaged configuration and vice versa.

Abstract: An articulated assembly includes a first piece connected to a second piece by a screwless hinge having a body with a cylindrical axial recess of revolution which opens onto at least one of the axial faces of the body and a cylindrical hub of revolution, with a diameter corresponding to that of the axial recess, fully housed in the axial recess; this hub including a radial cavity opening onto its periphery, and the lateral wall of the body having an opening of predetermined angular extent. The first piece includes an end provided with fixing elements arranged to be fixedly attached to the hinge body, the second piece includes an end provided with coupling elements suitable for being introduced into the radial cavity through the body opening and with retaining elements cooperating, in the in-use position introduced into the axial cavity of the hub, with the cylindrical wall of revolution.

Abstract: The invention relates to an articulated assembly comprising a first piece connected to a second piece by a screwless hinge (1, 4) which comprises a body (4) having a cylindrical axial recess of revolution (5) which opens onto at least one of the axial faces of the body (4) and a cylindrical hub of revolution (1), with a diameter (d) corresponding to the diameter (D) of the axial recess (5) of the body (4), fully housed in said axial recess (5); this hub (1) comprising a radial cavity (2) opening onto its periphery, and the lateral wall of the body (4) comprising an opening (8) with a predetermined angular extent (a).