I got a good look at it when they were loading up at Shelton.
Grandpa used a 'weed whacker' type garden tiller for power and differential. He cut off the tines and added wheels... presto! Tractor made to order for those under 80# or so.
It wrung the worm gear off when "a dult" tried to ride the child's toy. Them "dults" are heavy, you know.