Gears

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“It is found preferable, therefore, when a great difference of velocity is required, to use a combination of wheels, of moderate size. In the following figure, three wheels are seen thusly connected.” — Goodrich, 1844

Keywords

wheel, machine, gear, cog

Galleries

Gears

Source

S. G. Goodrich A Glance at the Physical Sciences (Boston: Bradbury, Soden, & Co., 1844) 90

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