While I'm traveling and waiting for the next batch of high resolution parts...
Here are the inside details to the manual clutch part. Yes, I'm revealing some inner secrets but they do little good for anyone without the rest of the mechanism. So... enjoy.
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Here is the cut and paste link to the web site. http://hagoth.wix.com/the-brass-ball#!Manual Drive Cut-A-Way/zoom/cjex/image_1s5u
The green clutch and purple hub parts are connected and slide back and forth on the yellow drive shaft through the blue back plate. The sliding clutch is shown half way between snapped in place and engaging the drive clutch. The yellow drive clutch does not move back and forth but rotates once the sliding clutch engages it. The red clutch guide housing is attached to the blue back plate and does not move.
Maybe this will clear up any confusion as to how this is intended to work. 