Leonardo da Vinci designed cranes that used screw mechanisms, gears, and counterweights to lift heavy loads. His crane studies belong to a large collection of engineering drawings exploring how mechanical advantage could make construction work easier.
A crane raises and moves loads by combining a supporting structure with a hoisting mechanism. Leonardo’s versions included devices for winding ropes and controlling movement, while counterweights helped balance the load. Some designs were intended for building sites, fortifications, or the movement of materials around water.
Leonardo did not invent the crane itself; lifting machines had been used since antiquity. His contribution was the detailed analysis and refinement of mechanisms, including screw-based adjustments and coordinated gear trains. This distinction matters because many Renaissance devices were improvements or new arrangements rather than entirely new machine categories.
His notebooks also contain studies of winches, hoists, pulleys, and hydraulic machines. Together, they reveal Leonardo’s systematic interest in converting small human effort into controlled motion.