Word: turnspit
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Dates: during 1930-1939
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Constructed from Leonardo's drawings, at a cost of $250,000, were more than 200 models of his inventions, in almost all of which he anticipated later inventors. Some of the contraptions: a jack (see cut); a turnspit driven by the draft of a chimney; a machine for cutting files and rasps; a printing press with movable type; an olive oil press such as is still used in Italy; a pile driver; an automatic saw; an automatic gear, like the differential in an automobile; a flying machine, whose bird-like wings were supposed to be powered by the operator...
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