Figures 1858 and 1859 depict pumps where the tap control is either operated by hand or is a self-acting control. The two-stage pump in figure 1860 is outfitted with Babinet's cock, and is suitable for faster working.
“Luftpumpen.” In Marpmann's Illustrirte Fachlexika [Illustrated Encylopedia]. Leipzig, Germany: P. Schimmelwitz, 1902. https://digital.sciencehistory.org/works/1544bp163.
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