A descriptive and historical account of hydraulic and other machines for raising water, ancient and modern : with observations on various subjects connected with the mechanic arts: including the progressive development of the steam engine (1876)
Ewbank, Thomas, 1792-1870 · New York : Scribner, Armstrong · leaf 191
and air beds would retain the form of bodies that reposed uponthem, like a founders mould of sand or plaster.* Those extremely light » Air beds are not, as some persons suppose, of modern origin. They were kiiowiibetween three and four liundred years ;igo, as ajipe.irs from the aniiexeil ciu. (No.… … No. 6S. Ancifiiit Air Bor). This application of air was probably known to the Romans. Ileliogabalus i:<:ed toamuse himself with the guests he in\ ited to his banquets, by seating them on lar-e ba<»8or beds, lull ol wind, whtch being made suddenly to collapse, threw jie su.su on theground. Dr.…
Pumping machinery
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