Credit: ©The Royal Society
    Image number: RS.14567

    Device for making filtrations through cap paper by means of a pneumatic engine

    Date
    11 February 1685
    Creator
    Unknown, Artist
    Object type
    Archive reference number
    Manuscript page number
    p162
    Material
    Dimensions
    height (page): 374mm
    width (page): 239mm
    Subject
    Physics
       > Vacuum physics
          > Pneumatics
    Content object
    Description
    This is the figure of a device which Denis Papin used at the meeting of the Royal Society on 11 February 1685 to filtrate sugar water using a pneumatic engine.

    This is copied from RBO/6/208 but lacks the lettering used to describe the design in the text.
    Object history
    11 February 1685, ‘Dr. Papin shewed a way, by which filtrations through cap-paper might be made suddenly and with great quantities of liquor by the help of the pneumatic engine. There being a pipe from the strainer to the exhausted receiver, the liquor was driven forcibly by the weight of the air. It was tried with a solution of sugar in water, which became very clear’ (Birch 4:366).

    Printed in Denis Papin, A Continuation of the New Digester of Bones (London: J. Streater, 1687), fig. 9.
    Related fellows
    Denis Papin (1647, French) , Natural philosopher
    Associated place
    <The World>
       > Europe
          > United Kingdom
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