Mark,
Yes, I made it. from a reprint of an old book called 500 Mechanical Movements. Fun resource book. Cambium press is where I got mine. As far as the movement of the rings and gears, it depends on what is fixed and what is free. if you move the outer ring it will drive the three small gears and the centre one, if you fix the outer ring, it will drive the three gears around the centre gear. I will send you a vid tomorrow of the movement.
D