Nut Fixed Screw
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“The nut, N, through which the screw passes, answers also for one of the beams of the press. If the screw be turned to the right, it wil advance downwards, while the nut stands still.” -Comstock 1850
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ScrewsSource
J. L. Comstock A System of Natural Philosophy: Principles of Mechanics (: Pratt, Woodford, and Company, 1850) 95
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