Abstract: The invention concerns a chronograph-type watch provided with a movement (29) comprising: current time display means, measured time display means, a time base designed to regulate said display means, a control device (34, 40) for starting and stopping the measured time display means, a reset device for resetting the measured time display means when time measurement is over. The watch is provided with a case (10) for housing the movement (29) and comprising at least one slide (24) for controlling the control and reset devices. Said watch further comprises a locking device (32, 52) designed to co-operate with the control device (34, 40) to enable or disable it, and an actuating member (28, 44) designed to de accessible outside the case (10), for controlling device locking device (32, 52).

Abstract: An oscillating weight for an automatic watch is arranged to carry a bearing defining an axis of rotation (A—A) and is intended to be mounted on the frame of the watch. The mass member of the weight has a center of gravity (G) shifted with respect to the axis of rotation. In this weight, this mass member includes two parts that can be moved one (10, 18) in relation to the other (24), and arranged such that their relative movement causes a radial movement of the center of gravity (G) of the mass member. The mass member also has a securing device (13, 14, 16b) cooperating with the first and second parts, capable of occupying a first state in which the parts can be moved with reference to each other, and a second state in which the parts are rigidly secured to each other.

Abstract: Embodiments of the present disclosure relate to a timepiece and a mechanism to be used with the timepiece for indicating the date and the day of the present time. In one embodiment, a timepiece may include a dial, indications of seven days of a week inscribed on the dial, and an aperture pierced through the dial and being sized to allow seven dates of a month to appear adjacent the indications on the dial. A mechanism for indicating the date and the day may include a date indicator bearing a series of dates from 1 to 31, a first member configured to cause the date indicator to move by seven days on each Sunday at about midnight, a date corrector bearing a series of dates from 1 to 6 and arranged in such a way that the date corrector can be partially superposed on the date indicator, and a second member configured to cause the date corrector to move in such a way that, at the end of a month having less than 31 days, the date corrector automatically hides incorrect dates and replaces them with its own dates.

Abstract: The invention concerns a chronograph-type watch provided with a movement (29) comprising: current time display means, measured time display means, a time base designed to regulate said display means, a control device (34, 40) for starting and stopping the measured time display means, a reset device for resetting the measured time display means when time measurement is over. The watch is provided with a case (10) for housing the movement (29) and comprising at least one slide (24) for controlling the control and reset devices. Said watch further comprises a locking device (32, 52) designed to co-operate with the control device (34, 40) to enable or disable it, and an actuating member (28, 44) designed to de accessible outside the case (10), for controlling the locking device (32, 52).

Abstract: Chronograph mechanism including first (20, 22) and second (21, 23) measured time counters and control means (24) arranged so as to start to stop one or other of the counters and a switching device (25) arranged such that the actuation thereof causes the started counter to stop and the stopped counter to start.

Abstract: Date display device, intended to be fitted to a timepiece provided with a movement, a dial 10 and hands 12, 14 driven by said movement and displaying the time. A date mechanism, drives first 32 and second 34 display members, mounted to move in rotation on the movement, and provided with indices 24 26. The device is arranged so that, when the mechanism causes the units display to pass from a value n to n+1, n being an integer number comprised between 1 and 9, the first member 32 travels, in the clockwise direction, through an angle equal to 30°, and so that, when n is equal to 1, the index 24 is located in a position corresponding to the position which an hour hand would occupy, when it is one o'clock.