In this design, Leonardo uses a pair of wheels with helical teeth to transmit motion between non-parallel shafts. In his notes on the drawing, he states that helical-profile teeth last longer than ordinary ones because their contact surface is greater. The system can also be used as a speed reducer.
Technical informations
Type of exhibit
Model
Collection
Material
Swiss pine wood
Measures
Width: 75 cm, Length: 75 cm, Depth: 75 cm
Storage location
Relationship with the original work
Source: Leonardo da Vinci, Codex Atlanticus, f. 1103 r
Inventory number
Object Record No.: 00000083
Location
Museo Leonardiano, Palazzina Uzielli, second floor
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Last update: 22 September 2025, 12:08