The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 381
mbers i 6 ; r is a cylinJerical pieceof metal made to tit the interior of the pump barrel, tlie upper eJge or end ofthis piece of metal is maJe with an undulating surface consisting of doubleInclined planes, there being four in number, as will be clearly seen by theform of the curved line, d d is… … rollers which rest upon the undulating surface c. It will, therefore, be seenthat by giving a rotary motion to the piston d the same will rise and fall asthe rollers traverse over the surface consisting of double inclined planes asflhcve described, /is the induction pipe and ^ the eduction pipe; A…
Architecture · Civil engineering · Science
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