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Rare books, Engravings

Plate 158: Screw-jack for breaking the iron gratings of a portcullis

  • 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 157.

Mechanics: wrenches.

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

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Cite as

Ramelli, Agostino. “Plate 158: Screw-Jack for Breaking the Iron Gratings of a Portcullis.” In Le Diverse Et Artificiose Machine Del Capitano Agostino Ramelli. Paris, France, 1588. https://digital.sciencehistory.org/works/9019s269z.

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