This machine designed by Filippo Brunelleschi represents an important evolution with respect to the medieval stella-type crane. It was used to accurately place heavy marble blocks destined for the construction of the lantern of the Florence Cathedral’s dome. At over 20 meters high, the crane was operated by no fewer than four teams of workers.
One team stood on the ground and was responsible for maneuvering a long oblique beam (rudder) to cause the crane to swivel, up to 360°. Two more teams powered the endless screws to cause the load and counterweight to move simultaneously in opposite directions, always keeping the machine in balance, while the last team lifted and lowered the load by turning a vertical screw.
Technical informations
Type of exhibit
Model
Collection
Material
Carved wood, iron, and pietra serena stone
Measures
Width: 103 cm, Length: 59 cm; Depth: 55 cm.
Storage location
Relationship with the original work
Source: Leonardo da Vinci, Codex Atlanticus, f. 965r
Inventory number
Record no. OA: 00000026
Location
Museo Leonardiano, Palazzina Uzielli, first floor
Related exhibits
Argano leggero
Counterweighted swivel crane
1964
Device for raising poles or posts
Counterweighted swivel crane
1978
Three-speed winch
Counterweighted swivel crane
1964
Gru da lanterna a fulcro centrale
Counterweighted swivel crane
2004
Gru girevole
Counterweighted swivel crane
1966
Le arti a Firenze
Counterweighted swivel crane
2022
Last update: 19 June 2025, 13:04