this was a freebie today,looks like J.M. CO. big wood with 1" hole in working end,with set/locking screw when attached to something

There was a J M Tatem Handle Co. at on time.

My totally unsubstantiated theory is that it is part of a farm implement made by the Janesville Machine company of Janesville Wisconsin. It appears that Janesville marked some of their implement wenches "J.M. CO.".  I did not find a good wrench marking image  searching online. Maybe a member has one and could snap a picture of the marking to compare.

   would a cutter bar fit  in the pointed end ???

   looks somewhat  like a bar guide, although I have not seen one like that.

i thought a file would help?????????