that's what we used growing up. A old school grinder with a pulley instead of a crank handle. It was mounted to a piece of plywood and that also had an electric motor and a belt. Gosh that thing was dangerous, the grinder had that big open funnel, we had a few close calls over the years I remember.
Yeah, it's pretty scary. One wrong move stuffing the meat in the funnel...bye bye fingers. The worst part is you know how they'll look coming out the grinder.