In thread below this system was mentioned as being similar to the Pellaton wonding of the IWC. A post by Eightohms was referenced where some descriptions and diagrams were offered. I thought this video may help - this is from a Seiko 6309A I serviced some time ago and it shows the magic lever at work.
First though here is a shot of the mechanism - sorry this is before cleaning so please ignore the dirt.
And from the other side - you can see where the rotor is attached.
And the video of it in action.
http://media.putfile.com/Seiko-Cal-6309-Auto-Winding-Mechanism
I hope you find this useful. Here is the watch...it was in rough shape when I received it.
Cheers, Al