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Show Lifting Machines Old Idea , Lilting machines with pulleys, ropes and winding drums, are as old as Archimedes, 2;'.0 B. C. They were j used In the coliseum in Koine; In the Middle ages for military purposes; i aud the germ of the modern elevutur Is in the drawings of the universal inventor, Leonardo du Vinci, and in Agrlcola. But tho earliest known primitive passenger elevator is that in the convent of St. Catherine, on Mount Sinai. It was worked by u capstan, uud carried both people and stores to the upper doors, to be af from the desert robbers. |