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'Theorie Elementaire des Poulies' (Theory of Pulleys), 1850-1860.


'Theorie Elementaire des Poulies' (Theory of Pulleys), 1850-1860.
3 3 c m
actual image size: 32cm x 25cm


Coloured engraving by Langevin, Paris, illustrating 50 asorted knots, 37 pulleys and 20 other asemblages, with key diagrams. The blocks shown in this engraving were used in large quantities on every sailing ship, a demand which led Marc Brunel (1769-1849) to develop his ideas for block-making machinery. Overall dimensions: 550mm x 7150mm.

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© Science Museum / Science & Society Picture Library

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