History: Purves Monowheel- This crazy looking vehicle was built based on a drawing made by Leonardo da Vinci! Known as a monowheel, the design for this wheel was patented in 1930 by a British inventor Dr. J. A. Purves.[720×570]

https://i.redd.it/e00wttc17nf41.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/f0notl/purves_monowheel_this_crazy_looking_vehicle_was/?utm_source=ifttt