All it is says is patent pending. I'm guessing it's part of a lathe?
not certain,but looks like part of a valve grinder.
so lathe tool in a specific way
looks like part of a valve grinder/refacer Beat me to it, you came in as I was typing
To me it looks like it could go on a surface grinder for sharpening special cutters. Does it look like grind stone residue on the tool?
I don't know why but I think its a radius cutter.
But I've been wrong too many times to count.
I think that oldgoaly has it right... a compound fixture for cutter grinding.
Joe B
does the part with the blue arrow pointing at it move on separate from the rest of the tool? If it does that could hold a diamond tip grinding wheel dressing tool