|This weapon is probably a simplified version of a weapon common|
during the Roman period. The weapon could be aimed up and
down and side to side. It had two separate bow arms (oak) and
twisted skiens stretched across a wooden frame. A crosspiece of
iron with a claw is held in place by two staples nailed to the stock.
An iron "key" with a length of rope served as a release mechanism.
Redrawn ad Enhanced - Marcus Audens
Reference: D. Nicolle, "Medieval Siege Weapons (2)," Osprey, 2003, N.V. 69