A descriptive and historical account of hydraulic and other machines for raising water (1850)
Ewbank, Thomas, 1792-1870 · New York, Bangs, Platt, & Co. · leaf 201
a ballof paste, and air beds would retain the form of bodies that reposed uponthem, like a founders mould of sand or plaster* Those extremely light a Air beds are not, as some persons suppose, of modern origin. They were knownbetween three and four hundred years ago, as appears from the annexed… … No. 68. Ancient Air Bed. This application of air was probably known to the Romans. Heliogabalus used toamuse himself with the guests he invited to his banquets, by seating them on large bagsor beds, full of wind, which being made suddenly to collapse, threw the guests on theground. Dr. Arnott, the…
Pumping machinery
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Examen dv livre des Recreations mathematiqves, & de ses problemes en geometrie mechanique, optique & catoptrique [du J. Leurechon] Où sont aussi discutées & restabiles plusieurs experiences physiques y proposées (1639)](https://img.insideoutlibrary.com/img/200/ia-examendvlivredes00mydo-434-92.webp)
