A watch is formed by a mechanical movement incorporating a mechanical resonator. The watch comprises a display displaying the time and a correction device for correcting the displayed time, which is formed by a receiver for receiving an external correction signal which is supplied by an external electronic device (in particular a mobile phone), a braking device for braking the mechanical resonator and an electronic controller. The correction device is arranged such that it can correct the time displayed as a function of a time error (loss or gain) contained in the external correction signal. For this purpose, the correction device is arranged such that the braking device can act on the mechanical resonator during a correction period to vary the running of the drive mechanism of the display, in order to correct at least for the most part the time error in the time displayed.

A timepiece component including a shaft-like portion including at least one pivot about a pivot axis, at least the material forming this shaft-like portion is a non-magnetic alloy containing at least silver and palladium and having a Vickers hardness of more than 450 HV.

An adjustment mechanism for a timepiece display including an input wheel driving a control wheel controlling the position of a first display member, and including a differential mechanism which includes a drive wheel set retained by a jumper and pivotable via the first input wheel, to drive a planetary wheel meshing with the control wheel and pivoting off-centre with respect to a planetary wheel holder friction-mounted on a frame, the differential mechanism multiplying by a particular factor the rotation between one of the inputs and the output of the differential mechanism when the other input is stationary, and the planetary wheel holder includes manipulating device allowing a watch technician to release the friction to change the angular position of the planetary wheel and thus of the control wheel for correct indexing thereof with respect to another display member.

The invention relates to a balance wheel-hairspring oscillator (10) comprising: a balance wheel shaft (18) intended to be pivotably mounted on a frame of a timepiece; a balance wheel (12) secured to the balance wheel shaft (18); a hairspring (14) comprising an inner end (14a) secured to the balance wheel shaft and an outer end (14b) intended to be connected to a connecting member (16) to said frame, and a transmission member (20, 22) arranged to interact with an escapement. The balance wheel (12) and the hairspring (16) are arranged on either side of the transmission member.

A regulating device including an oscillator and capable of blocking this oscillator carried by the carriage of a tourbillon or karussel, and including a stop wheel, coaxial to the carriage wheel and limited in angular mobility by a stop pin limited by a slot of the carriage, and including a toothing engaging with an external control member for the rotation thereof, the carriage carries a resilient element arranged so as to bear against a wheel set of the oscillator to stop the latter when the control member is in an active position, and to remain remote from the carriage and from any wheel set of the oscillator when the control member is in a rest position, wherein the stop wheel is in another angular position relative to the carriage wheel.

A watch formed by a mechanical movement incorporating a mechanical resonator, including a display displaying the actual time, a correction device formed by a device for detecting the passage of at least one hand through at least one reference time position and by an electronic correction circuit allowing an overall time error for the display to be determined, and a device for braking the mechanical resonator. The correction device is arranged such that it can correct the actual time displayed as a function of the overall time error (loss or gain) previously determined. For this purpose, the correction device is arranged such that the braking device can act on the mechanical resonator during a correction period to vary the running of the drive mechanism of the display, in order to correct the actual time displayed.

A device for manually controlling a timepiece mechanism includes two counteracting manual corrector actuators to be operated by a user and to control a correction wheel set in opposing movements. Each actuator sets in motion an associated corrector having a beak to bear against a relief of the correction wheel set and to cause the correction wheel set to move when the actuator is moved over its full path of travel. The manual control device includes a locking lever mechanism arranged to prohibit an action of one of the actuators on the correction wheel set when the other actuator is engaged and interacting with the correction wheel set. The locking lever mechanism includes a locking lever driven in rotation during the engagement of one of the actuators to limit the travel of the other actuator and to prevent the corrector associated therewith from accessing the correction wheel set.

A push button device including a supporting member provided with a through hole, an operation member having a shaft slidably inserted into the through hole, and a head provided on an outer end of the shaft, and an elastic member which is contracted to be arranged between the head and the supporting member, and further contracted in response to a movement of the operation member.

A correction device for a timepiece, including a differential gear having a first input, a second input and an outlet output, wherein: — the first inlct input is arranged to be driven by a timepiece movement; — the second input is kinematically linked with a corrector gear extending from a control member and including a clutch for establishing and interrupting the kinematic link between the control member and the second input; — the output is arranged to drive a display device of the timepiece movement, the angular position of the output being defined on the basis of the angular position of the first input as well as on that of the second input, wherein the correction device further includes a memory cam desmodromically linked with the second input, in that the memory cam experiences a return force provided by a resilient member tending to maintain the memory cam in at least one predetermined angular position when the kinematic link between the control member and the second input is interrupted, the resilient member also being arranged to allow a rotation of the second input under the control of the control member when the kinematic link is established during the use of the correction device, and in that the correction device is arranged so that the incidence of the rotation of the second input during a correction on the angular position of the output is removed when the memory cam is located in the at least one predetermined angular position.

A selection and actuation device for at least a first and second function of a watch movement includes a translationally and rotationally movable control stem respectively selecting and actuating at least one of the functions. The control stem occupies at least first, second and third distinct, successive axial positions. An actuating lever bears first and second wheels and pinions. The actuating lever occupies a neutral position when the control stem is in one of its first and third positions, and pivots, on either side of the neutral position, between a first driving position actuating the first function responsive to control stem rotation in a first direction, and a second driving position actuating the second function responsive to a control stem rotation in a second direction. Also disclosed is a movement including such a selection and actuation device as well as to a timepiece including such a movement.