Leonardo da Vinci demonstrates his propensity
for the colossus in his famous sketch of a giant crossbow.
This scan of da Vinci 's notebook details the laminated bow, winding mechanism
and trigger of the crossbow. Scholars doubt anyone every built this
crossbow, but large bow like siege engines
were part of Greek and Roman artillery
long before da Vinci's birth.
Leonardo's notebook also contained studies of a large
trebuchet used for defending a fortification and trebuchet and catapult
da Vinci's crossbow
is also featured in the 1903 Ralph
||The Crossbow , Mediaeval
and Modern, Military and Sporting; its Construction, History, and Management.
With a Treatise on the Balista and Catapult of the Ancients.
Leonardo da Vinci Giant Crossbow