Designed by Filippo Brunelleschi around 1420, this winch was used in the construction works for the dome of the Florence Cathedral, for hoisting and lowering very heavy loads.
The machine is composed of a wooden structure anchored to the ground. It is powered by a pair of oxen turning in a circle, actuating a moving shaft with an endless screw device connected to two horizontal wheels. By means of the gears connected to the endless screw, it was possible to change the direction of the winch’s rotation, thus causing the load to rise or lower, without having to detach the oxen from the yoke. Another feature of the machine is the presence of three drums, or cylindrical axes, on which the cords for raising or lowering the loads wrap and unwrap. Each has a different diameter, allowing the winch to work with different forces and at different speeds depending on the load to be handled.
Technical informations
Type of exhibit
Model
Collection
Material
Carved and turned wood, cotton cords, brass, stone, and copper
Measures
Width: 96 cm, Length: 86.5 cm, Depth: 57.7 cm.
Storage location
Relationship with the original work
Source: Leonardo da Vinci, Codex Atlanticus, f. 1083 v
Inventory number
Record no. OA: 00000027
Location
Museo Leonardiano, Palazzina Uzielli, first floor
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Last update: 19 June 2025, 12:05