Springalds and Great Crossbows (Paperback)
The Springald was a ballistic weapon powered by torsion, developed from the ancient technology of Greek and Roman siege engines. Together with its cousin the great crossbow, it enjoyed a brief voyage in medieval Europe until the coming of gunpowder changed the face of war. Jean Liebel has drawn extensively from the rich European source material and his own innovative experimental models to provide the first detailed study of these weapons. His approach is highly original and will provide food for thought for everyone in medieval siege engines and siege warfare.
can honestly say this was a fascinating read and I can wait to explore more castles now and look for signs of these weapons. If I had the space and technical ability I would love to make a springald.Medieval Sword School
If you are interested in the development of artillery or siege equipment, this book should be in your library of resources as it appears to be the only book of its kind of on the period.