Illustration showing water wheel and pumps at London Bridge

Illustration showing water wheel and pumps at London Bridge. In this picture a water wheel driven by the tide works four force pumps, through spur wheel, with iron cogs, working on a trundle. From William Emerson The Principles of Mechanics. London, 1836

1836 Cogs Driven Emerson Mechanics Principles Pumps Spur Tide

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