The trebuchet always had a sling in which to place its missile.
The sling doubled the power of the
engine and caused it to throw its
It was the length of the arm, when suitably weighted with its counterpoise,
The weight of a projectile cast by a trebuchet was governed by the weight
As a small horse weighs about 10 cwt., we can form some idea of the
Villard de Honnecourt2 describes a
trebuchet that had a counterpoise of
All kinds of articles besides horses, men, stones and bombs were
1 Stella flourished at the end of the fourteenth century and beginning of fifteenth. He wrote The Annals of Genoa from 1298-1409. Muratori includes the writing Stella in his great work, Rerum Italicarum Scriptores, 25 vols., 1723-38.
2 Villard de Honnecourt, an engineer of the thirteenth century. His album translated and edited by R. Willis, MA., 1859.
3 Jean, Sire de Joinville. He went with St. Louis to Damietta. His memoirs, written in 1309, published by F. Micheal, 1859.
4 Abulfeda, 1273-1331. Arab soldier and historian, wrote Annals of the Moslems. Published by Hafnire, 1789-94 Abulfeda was himself in charge of the hundred carts.
5 From an old history of the siege (in manuscript) found in the town hall of Orleans and printed by Saturnin Holot, a bookseller of that city, 1576.
6 Persian historian, wrote at end of thirteen and the beginning of fourteenth century. The preface to his history is dated 1288, and the history itself is carried down to 1312.
refused to open the gates to Ala’uddin Khilji in 1296, he loaded his
Figs. 18, 20., explain the construction and working of a trebuchet.
From ‘ Il Codice Atlantico,’ Leonardo da Vinci, 1445-1520
A. The arm pulled down and secured by the slip-hook previous to unhooking the rope of the windlass. B. The arm released from the slip-hook and casting the stone out of its sling. C. The arm at the end of its upward sweep.
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