Islamic Crossbow?

[fernando]

You can read in the "Historia Silense " ( Perez de Urbel y Ruiz-Zorrilla - pages 189-190 ) , in the year 1028 , during the conquist of Coimbra by Fernando I, the relate of the punishment inflicted to a Moor, that has killed his father in law Afonso V, with a crossbow.
These type of texts are or come from writings of the period, and there is no misinterpretation of terminology. A bow is an "arco" ( arch ) and a crossbow is a "besta" ( beast ) or whatever subnames derived from the crossbow evolution and variations.
In the French National Library of Paris, there is ( at least ) an illumination of the great siege of Rhodes, in 1480, where you can clearly see the gear of both Otoman Turks and the Knights Hospitalers ( St. John of Jerusalem ), with the Turks using a consistent shape of crossbows ( one with a highly powerfull cranequin, a ratchet device that spanned a 450 ratio tension ).
Naturally all this showering of examples don't bring a label stating " Made in Islam ", but you are getting each time closer to something solid.