Diagram of a ratchet wheel used to drive the wheel shaft of a steamboat. Illustration from "Les Merveilles de la science ou description populaire des inventions modernes" written by Louis Figuier and published in 1867 by Furne, Jouvet et Cie.

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Keywords: 18th, 19th, 19th-century, century, close-, component, development, drawing, engine, engraving, france, french, illustration, industrial, invention, mechanisation, progress, revolution, scientific, steam, technical