Leonardo da Vinci designed cranes that used rotating drums, ropes, and mechanical gearing to lift loads.
A crane raises material by applying force through a rope, chain, or similar flexible element. In Leonardo’s studies, a worker could turn a handle or operate a mechanism that rotated a drum, winding the rope and lifting a weight. Some designs also included wheels, pulleys, and platforms to improve movement around a construction site.
The basic crane was much older than Leonardo. Ancient Greek and Roman builders used lifting devices, and medieval construction sites developed many forms of treadwheel crane. Leonardo’s importance lies in his detailed observation and refinement of mechanisms, not in inventing lifting technology from nothing.
His drawings often combine several machines into a compact system, so individual sketches should not be read as proof of a single standardized crane model. They reveal his interest in reducing effort, controlling heavy loads, and making construction machinery more mobile and precise.