Online Exhibits > Leonardo and the Engineers of the Renaissance > 3D Simulations

Three speed hoist

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The hoist was firmly anchored into the ground inside the dome. A screw at the base of the driving shaft meshed alternately with the two horizontal wheels. The operator could thus shift from load-raising to load-lowering mode without having to unhitch the animals from the yoke and re-hitch them facing the other way. The load was hoisted up the external scaffolding.

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