The only making is "PATENTED NOV 1850"
The handles appear to be fruitwood. One handle has a bolt in it, the other a nut. There is a cylindrical metal sleeve between the two handles.
The anchor shaped cutter goes into the sleeve, and has a hole through whch the bolt passes. When the handles are twisted they tighten and hold the cutter securely.
The fence is, I feel sure a later addition as the right handle has been ligtly shaved to make the fence a firm fit.
It does a pretty darn good job of cutting a groove in a ash plank.!
Any ideas as to maker,name use?
Picture is not good enough to read, but it says:
"PATENTED NOV 1850"