Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 122
dempty themselves as shown at a.It will be seen that the water actsupon almost one-half the circum-ference of this wheel, thus realizingthe greatest mechanical effectwith the smallest quantity of water. The ciirrent-xvJieel is perhaps the first application of theforce of water in motion, to drive… … Fig. 111.
Hydraulic machinery · Pumping machinery
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