Below French content is translation of from book of Al-Tarsusi who wrote an Arabic book for Saladin mentioning a large crossbow stock and lock mechanism. I tried to use Google Translate but the result was awfully distorted. I tried to ask about it here since only proper translation could be done by someone knowing mechanics of crossbows.
If anyone could translate or sum up what the text is about, I would greatly appreciate it.
Thanks in advance.