Leonardo da Vinci’s bucket wheel was a rotating water-lifting device fitted with buckets.
Leonardo studied water-management machines that used rotating motion to raise water from a lower level to a higher one. In a bucket-wheel arrangement, containers attached around a wheel scoop up water as they descend and release it into a higher channel as they rise. The principle was useful for irrigation, drainage, and canal engineering.
Leonardo’s hydraulic studies examined how wheels, paddles, screws, pumps, and channels could work together. His notebooks frequently connect machine design with observations of flow, gravity, and the changing level of water. The bucket wheel represents a practical hydraulic concept rather than a flying or military invention.
It differs from Archimedes’ screw, which transports water through a helical passage, and from a crane, whose main purpose is lifting solid loads. The buckets and continuous rotation identify this water-raising device.