Manufacture Roger Dubuis S.a.

Carlos Dias

Grégory Bruttin

Watch dial

Watch movement

The invention concerns a timepiece comprising a dial provided with means () for selective and simultaneous analog display of respective hours of several time zones, distributed on two non-coaxial superimposed annular discs () of similar diameters, arranged beneath said dial and each of which is divided into twelve sectors each corresponding to a time zone. The dial has two diametrically opposite windows (), arranged on a diameter passing through the swivel axes of the two annular discs (), each being located opposite a segment of the trajectory of the respective discs. Each of the discs () is linked to a manual selection member () and, by a one-way kinematic link (), to an hour display member () of the corresponding time zone.

Timepiece

This hour and minute display device comprises four disks, two for displaying, respectively, the tens and units of hours, two for displaying, respectively, the tens and units of minutes, each disk being fixedly connected to a toothed wheel linked to a jumper, said toothed wheels, fixedly connected to the two disks for displaying, respectively, the units of hours and of minutes, being linked to respective yoke mechanisms pressed by elastic members against respective instantaneous-jump cam elements, and further comprises, between said cam elements and the toothed wheels fixedly connected, respectively, to said tens of minutes and of hours disks, mechanisms for connecting these latter toothed wheels to said respective instantaneous-jump cam elements with each change of tens.

Mechanical hour and minute display device

This timepiece is equipped with a device for displaying two different time zones and comprises three display units () driven by the minutes geartrain of the timepiece, two units () comprising only means () for indicating the hours in two respective time zones, one corresponding to the local time and the other to a determined time zone, and the third () of said units comprising only means () for indicating the minutes corresponding to each of the two time zones. It comprises control means () for modifying the time difference between said unit for indicating the local time and the one for indicating said determined time zone.

Timepiece equipped with a device for displaying two time zones

The invention relates to a timepiece comprising a time train, a 31-toothed wheel, a wheel of units of 30 teeth plus a space corresponding to a tooth which is used to drive a star-wheel of units and a four-toothed wheel for driving a star-wheel of tens, a year cam which is solidly connected to a wheel, and drive means for driving said 31-toothed wheel by one revolution per month and the year cam by one revolution per year. The aforementioned 31-toothed wheel is solidly connected to a corrector element. The drive means comprise a cam which is solidly connected to a wheel, a driving yoke, elastic means which are used to press said yoke against the cam, a corrector yoke, a feeler which is arranged to detect the position of the year cam and elastic means in order to connect said yokes to one another.

Timepiece with calendar

The present invention relates to a tourbillon-type timepiece mechanism, comprising a cage (-), means () for pivoting this cage on a casing () of the timepiece, a kinematic link () between the axis of this cage and a motive barrel, a hairspring () pivoted at the center of this cage and an escapement mechanism () engaged with this hairspring (), the pinion () of the escape wheel of this escapement mechanism () being engaged with a toothing joined to said casing (), which toothing is borne by a crown gear (), connected to said casing () by an eccentric pivot pin (), and by means () serving to immobilize said crown gear () relative to said eccentric pivot pin ().

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Carouge, Switzerland

Carlos Dias