A descriptive and historical account of hydraulic and other machines for raising water (1850)
Ewbank, Thomas, 1792-1870 · New York, Bangs, Platt, & Co. · leaf 134
e prominent defect of the tympanum arises from the water beingalways at the extremity of a radius of the wheel, by which its resistanceincreases as it ascends to a level with the axis; being raised at the end oflevers which virtually lengthen till the water is discharged from them.There is no… … Chap. 14.] The Tympanum and Scoop Wlieel. Ill ed, and its having been described as represented in the last figure by aRoman philosopher and engineer; it was most likely used as thus con-structed, through the remote ages of antiquity, to the early part of the lastcentury, when a member of the Royal…
Pumping machinery
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
