Räderwerk eines Chronographes

Horloge-mère à mémoire électronique

Sound-producing blade for music reproduction with rotating disc

It comprises at its moving free end (3) a tip (4) driven or bonded into a housing in this free end. This attached tip (4) is made of a hard material such as ruby or tungsten carbide or of a synthetic material. ...

CALENDAR MECHANISM FOR A TIMEPIECE.

Of friction coupling device for a watch movement.

Calendar.

Mechanical chronograph.

CONTROL BOLT CLOCKWISE.

Flyback chronograph with insulator.

[...][...] D' [...][...][...] DE RESERVE DE OF MARCHE

Timepiece provided with a date display.

Rapid correction mechanism of the date for a watch movement with a date.

Wrist watch with sunrise and sunset times includes two shutters moving over arced window to define range of times for sunlit hours during day

The system uses shaped cams to move the shutters throughout the year and thus define sunrise and sunset times. The watch mechanism includes a de-multiplier drive train (1,2,4,5,6) having a drive ratio of 1 to 12, linked to a wheel (7) which makes one complete revolution per year. This wheel carries cams (9,10) which are shaped in accordance with the pattern of sunrise and sunset during the year. The cams serve to control two mobile horizons (11,12) which are pivoted concentrically and which each have a follower co-operating with the respective cam. The horizons move over an arc shaped window in the watch face, defining limits for sunrise and sunset. An image of the sun is carried on a wheel behind these horizons, so that its movement during the day can be seen, against the limits imposed by sunrise and sunset.

Additional mechanism of astronomical representation for timepieces.

STATE INDICATOR FOR A MECHANICAL CLOCKWORK

Garde-temps électronique

MECHANICAL-ELECTRIC ENERGY CONVERTER AND WATCH PART COMPRISING THIS ENERGY CONVERTER

Mechanical-electric energy converter and watch part comprising this energy converter

A mechanical-electric energy converter comprising a wheel for transmitting energy which rotates at a low speed. The teeth of the driving wheel shift the rotor of the generator from its position of equilibrium, causing it to oscillate around the wheel. This converter can produce high angular velocities without a speed-increasing gear train.

AUTOMATIC AND CONTINUOUS TIME ADJUSTING DEVICE FOR A CLOCK

Räderwerk eines Chronographes

Bracelet with lightened links

A lightened bracelet with articulated metallic links includes lateral links (4a, 4b) connected by two pins (3) or screws (6) and at least one row of central links articulated on two pins (3) or screws connecting different lateral links. The central links comprise a tubular metallic envelope (1) in which is disposed at least one insert (2) of plastic material provided with two passages each receiving with low friction a pin (3) or a screw (6).

ESCAPEMENT DEVICE

Chronograph gear train

Bracelet with links of light weight

Bracelet with lightened links

The lightened bracelet with articulated metallic links comprises lateral links (4a, 4b) connected by two pins (3) or screws (6) and at least one row of central links articulated on two pins (3) or screws (6) connecting different lateral links. The central links comprise a tubular metallic envelope (1) in which is disposed at least one insert (2) of plastic material provided with two passages each receiving with low friction a pin (3) or a screw (6).

MASTER CLOCK WITH ELECTRONIC MEMORY