Glashütte Original

stromer
2453

• Show profile
• Show other posts

Something special about the G.O. Senator Chronometer's movement

Turning around a Senator Chronometer you will immediately notice the large three quarter plate that is so typical for watches from Glashütte.

But what really stands out here is the planetary gears that are coupled to the winding wheel on top of the main spring barrel.



It is not common to have the planetary gears for the power reserve display in the open. Normally they would be hidden somewhere within the movement.

Winding the watch you can see the ring like outer gear turn anti-clockwise.
By the tooths on its inner rim it drives the three small golden wheels on their shafts anti-clockwise too and thereby the inner golden cogwheel clockwise.
Connected to the inner golden wheel is the power reserve hand on the dial.
The power reserve hand on the dial is turning clockwise too, towards its "Auf" position.




But the dance happens when the watch is running. Even if it is a very, very slow dance:

Now the main spring barrel inside the movement is turning while the winding wheel visible at the left is locked by the click at the upper left.
The barrel drives the plate with the three small golden wheels on it anti-clockwise .
That makes the small wheels run along the inner tooths of the locked large outer gear. They turn clockwise on their shafts each.
Turning clockwise the three small wheels turn the inner golden wheel anti-clockwise.
Connected to the inner golden wheel is the power reserve hand on the dial.
By some invisible intermediate gears the hand is driven anti-clockwise to its "Ab" position.

The plate with the three shafts for the small wheels on it is turning at the speed of the main spring barrel.
So that is something far to slow to be observed by the naked eye. For one revolution it takes 7 1/2 hours of real time.
A good thing that cameras and computers have been invented by now



Hope you enjoyed this little excursion into mechanical waters.

Best,
Martin