1936 starter

[Blastfromthepast]

I tried to start my car for the first time. There was a chattering noise from the starter. I removed the starter and bench tested it and it just doesn’t seem right.
There seems to be a vibration in the shaft area. The drive caught my attention. I understand that it works on sentrifical force which moves the gear forward and engages the fly wheel. How does that gear free itself from the flywheel and return back to the original area away from the flywheel.