Hmmm... i think you mean a Fox-- built in Indiana. I think I may still have a demo video of that machine. It cuts really well but I didn't like the "Rube Goldberg Designs" look and the rear positioning of the wheel-A slip could put one's foot past the guard and into the cutter.
I also have tried to find a picture or information on Fox Grinders. There have been a few advertised for sale is some of the want ad magazines. So if anyone has a picture of them, or knows of a web page, it would be appreciated
Found a Fox Stump grinder on EBay. It has a rear mounted cutting wheel. It did not impress me at all. Looks like good way to pick up the nick name of stumpy.