Abstract: In order to counter the effects of the Earth's gravitational force on the operation of a watch movement, the timepiece includes an escapement mechanism designed to drive a finish gear-train of a watch movement which defines a reference plane, and a balance co-operating with the escapement mechanism. Particularly, the balance is mounted in a frame (28, 60), said frame pivoting about a first axis (AA, CC) relative to the reference plane, and the orientation of the frame (28, 60) relative to the first axis (AA, CC) depends on the orientation of the Earth's gravitational force.

Abstract: A gear shifting mechanism intended to be integrated into an horological movement includes a gear pinion rotated by a first wheel of the movement, an element holding a first fly-back heart freely mounted on the gear pinion, and rotated by the first wheel or by a second wheel of the movement. A second fly-back heart is attached to the gear pinion, a gear wheel is mounted freely rotating around the gear pinion and holds a first hammer or also a second hammer pretensioned against the first heart or also the second heart by a first pretensioning spring or also a second pretensioning spring, and a shift wheel being rotatably mounted on the periphery of the gear wheel (4.6) holds a first cam or also a second cam.

Abstract: In order to counter the effects of the Earth's gravitational force on the operation of a watch movement, the timepiece includes an escapement mechanism designed to drive a finish gear-train of a watch movement which defines a reference plane, and a balance co-operating with the escapement mechanism. Particularly, the balance is mounted in a frame (28, 60), said frame pivoting about a first axis (AA, CC) relative to the reference plane, and the orientation of the frame (28, 60) relative to the first axis (AA, CC) depends on the orientation of the Earth's gravitational force.