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Plate 167: Screw-jack for bending or breaking the iron gratings protecting a city wall or canal

  • 1588

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Public Domain

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Can be operated by a single person, easily and with little noise. The device depicted here is also illustrated on Plate 166.

Mechanics: hand crank; worm and worm gear; double toggle linkage.

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  • 38 cm H
Subject
Rights Public Domain Mark 1.0
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  • Courtesy of Science History Institute

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Cite as

Ramelli, Agostino. “Plate 167: Screw-Jack for Bending or Breaking the Iron Gratings Protecting a City Wall or Canal.” In Le Diverse Et Artificiose Machine Del Capitano Agostino Ramelli. Paris, France, 1588. https://digital.sciencehistory.org/works/4f16c3110.

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The Science History Institute recognizes there are materials in our collections that may be offensive or harmful, containing racist, sexist, Eurocentric, ableist, or homophobic language or depictions. The history of science is not exempt from beliefs or practices harmful to traditionally marginalized groups. The Institute is engaged in ongoing efforts to responsibly present and address the evidence of oppression and injustice inextricable from the history of science. If you would like to learn more about our ongoing efforts or if you encounter harmful, inaccurate, or insufficient descriptions, please contact us at digital@sciencehistory.org.