Bill Tindall, E.Tn.
So, other than a geared hand driven grinding wheel setup, I'm coming up with few ideas. Suggestions?

You want a small convex profile. Picture the profile and then imagine how to get it on a flat "stone"

Once again

1 micron diamond on cast iron. About 5 pull strokes rocking the blade up as it was pulled, maybe 5-10 degrees. Followed by green stuff on strop, again About 5 pull strokes rocking the blade up as it pulled, maybe 5-10 degrees. Proceeded to dovetail 5 ash drawers with no readily observable damage to a Narex chisel.