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Gauge Valjoux 7750

Any typos are as a result of direct translation of the original French.

This gauge is a movement stop watch with automatic reassembly.

It indicates:

Hours, minutes and the small second
The second stop watch
The meter minutes
The meter of hours
The day of the week
The date

It has a diameter of 30 mm (131/4' ' '), height a 7,90 mm and 28800 alternances/heure.
There exists like basic movement without the automatic reassembly part with reference 7760.
Other references are indexed according to the posting of additional indications (dates alone, the moon... etc.)

Operation

Departure:

One presses on the order, the end of the latter will push the cam of stop watch (shuttle).

The top of the cam will raise the hammer.

The blocker remains raised.

The clutch 60 seconds fall and engages the oscillating pinion with the wheel of stop watch, the stop watch functions.

 

 
 

To each passage of the second hand between the 58ème seconds and the 60ème, the meter minutes will pass to the following minute thanks to the small spring fixed under the wheel of stopwatch.

 




The meter d’heures

The gray wheel of the meter is always made involve by a pinion driven out on the lid of barrel.

The switch is made involve and released the wheel counter of hours (yellow wheel) of its hammer and it is made involve by friction.




Stop

While pressing again on the order, the cam will make fall the blocker in its notch, which will block the wheel of stopwatch.

 


click to increase

The clutch 60 seconds will be made raise and to break engaging between the pinion oscillating and coils it stop watch, the stopwatch s’arrête.



Restoring

One presses on the ordering of restoring which will come to push the cam.

The hammer will fall into the notch and will carry out the restoring.

The ordering of restoring also will push the ordering of the hammer d’heures which will push this last which will make the restoring of the meter of hours.

 

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