Breguet: Another Self-Winding Stop-Work
The following animations repeat indefinitely, but they cannot be reset. I suggest you use Firefox and install the following extension (or similar if others exist):
Firefox addon to toggle animated gifs
The animations below show the mainspring being unwound from the perspective of the barrel with two different annuluses. Because a suitable photograph of the arbor wheel was not available, it is shown as transparent grey.
Unwinding Large Annulus Unwinding Small Annulus
Winding the mainspring is basically the same, except: First the animation runs from the last frame to the first. Second, the dirction of rotation is anti-clockwise. And third, the opposite sides of the slots in the barrel wheel are used. So it is easy enough to visualise winding. The following animations were constructed by reversing the unwinding animations and show the arbor wheel finger acting on the wrong side of the slots.
Winding Large Annulus Winding Small Annulus