Sunday, April 22, 2012
In the 1920s Armstead attached their Snow-Motor kit to a Fordson tractor and created the Fordson Snow Devil. The Snow-Motor was two large screws replacing the wheels of the tractor so it could maneuver in snow. They formed a company to sell the kits, and then pretty much vanished from the records. I have no idea how many they sold, if they ever sold any.
However, the idea of screw-propelled vehicles was revisited during WWII and later the Soviets built a number of different versions of them. You can read about the Soviet versions, and see pictures of them, at the post Strange Screw Vehicles.
I believe screw drives were also considered for lunar rovers, but I couldn't find any information about them, so I may be imagining that. However, another post which covers even more screw-driven vehicles is Screw Propelled Vehicles at the website Unusual Off-Road Vehicles.