Breguet 2-Pin 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 wound from the perspective of the barrel and unwound from the perspective of the Arbor Wheel.
Winding Relative to the Barrel Unwinding Relative to the Arbor Wheel
More animations of this design are given in the relativity animations