A descriptive and historical account of hydraulic and other machines for raising water (1842)
Ewbank, Thomas · Tilt & Bogue · leaf 247
eel ; over this a rope is passed and crossed below , to whieh any number of men , on each side , may apply their strength . Both parties pull the rope towards them by turns , and thereby impart the requisite movement to the cog wheel , and consequently to the pump rods and suckers , as shown in No… … No . 92 . Working - Ship Pumps by Ropes . In 1813 , the London Society of Arts awarded a medal and twenty guineas to Mr . P . Hedderwick , for various modes of imparting motion to two pistons in the same cylinder , by a series of levers , instead of cog wheels and racks . Trans , vol . xxxii , 98 .…
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