Le Mecaniche
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Le Mecaniche is a short treatise by Galileo Galilei, composed while he was teaching mathematics in Padua. The precise date of its most refined form is difficult, if not impossible, to determine, but i
Steelyard weighing device from the late nineteenth century.
A simple pulley ABC in which a weight E is lifted by a force F.
A single movable pulley BDC supports a weight G. A cord ABDCF wrapped around pulley BDC is anchored at A, and a force applied at F pulls upwards, thus raising pulley BDC and the weight G, functioning as a class II lever.
Windlass
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The windlass is an apparatus for moving heavy weights. Typically, a windlass consists of a horizontal cylinder, which is rotated by the turn of a crank or belt. A winch is affixed to one or both ends,
Turnbridge windlass lifting road bridge over Huddersfield Broad Canal
Two Spanish windlasses on a bunch of sticks, in the starting position and tightened