A descriptive and historical account of hydraulic and other machines for raising water (1842)
Ewbank, Thomas · Tilt & Bogue · leaf 131
The Tympanum and Scoop Wheel . Chap . 14 . ] 111 ed , and its having been described as represented in the last figure by a Roman philosopher and engineer ; it was most likely used as thus con - structed , tbrough tbe remote ages of antiquity , to the early part of the last Century , when a member… … No . 45 . Tympanum improved by La Faye . 387, ) together with the process of reasoning that led to it “ When the circumference of a circle is developed ; a curve is described , ( the invo - lute ) of which all the radii are so many tangents to the circle ; and are likewise all respectively…
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