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François Cavé (1794-1875) was a French engineer.
In 1826 he opened his own workshops in the Goutte-d'Or district. Products included: machine tools, locomotives, ships, marine engines, stationary steam engines, presses. His son-in-law, Louis Lemaître, ran the adjoining factory at La Chapelle Saint-Denis.
He was born on 12 September 1794 to poor agricultural labourers. After military service, he went to work for John Collier at the rue Richer in Paris. He then became a foreman in a spinning mill in the Clignancourt, where he designed an oscillating engine to replace an existing steam engine. In 1828 he built the machinery for the cross-channel steamer Courrier, which had feathering paddles.
The Musée des arts et métiers have on display a scale model of a Cavé 20 tonne crane ordered by a British railway contractor for the compagnie de chemin de fer du Paris-Orléans. The model was made c.1841 by Pierre Clair.