My thoughts also.My guess is a tool and cutter grinder head
"...Bridgeport & South Bend pieces" you say? (as half the forum board leans towards their screen.)I could believe that it's a T&C grinder head, sure wish I could figure out what machine it is off of so someone could use it. Just looking at it it almost seems like it is an accessory to turn something into a T&C grinder. There was a bunch of Bridgeport pieces with it along with some South Bend stuff. Mystery boxes are fun, sometimes.
D*mn, that is a gorgeous lathe.Is the pulley that the belt goes on inside the housing you have pictured? At first I thought it might be a rack milling attachment for a horizontal mill. Could it be a lathe milling attachment similar to the attached photo?
Yes, there is a shaft that runs across the head and in the center of the bulbous part there is one sheave that the belt runs over. So the 5" diameter split flange would interface with whatever drives the belt. Both ends of the driven shaft are threaded with a key way.Is the pulley that the belt goes on inside the housing you have pictured? At first I thought it might be a rack milling attachment for a horizontal mill. Could it be a lathe milling attachment similar to the attached photo?