Abstract: A device for assembling and adjusting a balance spring, comprising a base joined to a balance bridge with an adjustable angular orientation, and comprising a bearing surface and a bearing plate adjacent to the bearing surface, both defining a service position of the end turn of the balance spring. A first arm extends from the base and bears a locking member for the end turn, said locking member being designed to keep the terminal coil in abutment against the bearing surface. The device comprises a second arm that extends from the base and bears a shoe that is able to be arranged at a predefined distance from the bearing surface so as to cooperate with the end turn. A movable control member is able to act on the second arm in order to deform it elastically and move the shoe with respect to the base in order to free the end turn.

Abstract: A timepiece, includes a frame supporting a drive element, a time base and drive trains pivotably mounted on the frame and arranged so as to drive at least one display train intended to carry an element displaying information, such as the time. The movement also includes a fixed gear, firmly attached to the frame, with which a toothed element of the display train is arranged to mesh, and a drive element having first and second kinematic links, respectively, with one of the drive trains and with the toothed element so as to drive the latter in translation in a first direction along the fixed gear. Preferably, the drive element is embodied in the form of a deformable element, and the movement also includes a retrograde mechanism for driving the toothed element rapidly in the opposite direction by means of the drive element.

Abstract: A timepiece, includes a frame supporting a drive element, a time base and drive trains pivotably mounted on the frame and arranged so as to drive at least one display train intended to carry an element displaying information, such as the time. The movement also includes a fixed gear, firmly attached to the frame, with which a toothed element of the display train is arranged to mesh, and a drive element having first and second kinematic links, respectively, with one of the drive trains and with the toothed element so as to drive the latter in translation in a first direction along the fixed gear. Preferably, the drive element is embodied in the form of a deformable element, and the movement also includes a retrograde mechanism for driving the toothed element rapidly in the opposite direction by means of the drive element.