This device designed by Leonardo was used in Renaissance construction sites for pulling, lifting, and vertically positioning posts or poles utilized for building scaffolding or large lifting machines.
The pole is first moved on wheels and then hoisted with ropes connected to two winches. When designing this machine, Leonardo was considering whether it was preferable to use oblique or horizontal traction for lifting a post. He finally decided on horizontal traction, which requires a constant and lesser effort.
We do not know whether Leonardo actually invented this device or merely perfected it, but in his notes accompanying the drawing, we can clearly see his constant research for solutions capable not only of optimizing machine operations, but also of reducing human effort.
Technical informations
Type of exhibit
Model
Collection
Material
Carved wood, iron, and cotton thread
Measures
Height: 80 cm.
Storage location
Relationship with the original work
Source: Leonardo da Vinci, Codex Madrid I, f. 43 r
Inventory number
Record no. OA: 00000031
Location
Museo Leonardiano, Palazzina Uzielli, first floor
Digital archive
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Last update: 19 June 2025, 13:26