I've never seen or heard of this one. Very neat.
This is a rare video of an invention that never went very far. Wait until you see the automobile version it is all on here. 1929 Snow Tractor. Talk about ingenuity!
This is a 1929 silent film (on video) of a tractor-snow-machine invented by Henry Ford, shown here driving it. Watch the whole thing. Note the "hat." It is 10 minutes.
Click Here for video