Funny, I was thinking Toolmaster as well until you pointed to the extra handle and now I am rather confused.
I do know that on some later Cinci mills, they moved the X feed handle to the knee front, but the tiny pic makes this one appear to have standard handles also for the X, so I cannot understand what that handle could do.
Please post a larger/better pic and maybe we can tell.
"I am, and ever will be, a white-socks, pocket-protector, nerdy engineer -- born under the second law of thermodynamics, steeped in the steam tables, in love with free-body diagrams, transformed by Laplace, and propelled by compressible flow."