Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 57
nded from pins, on whichthey turn, and thereby retain avertical position through theirentire ascent; and when at thetop are inverted by their lowerpart coming in contact with a pinor roller attached to the edge ofthe gutter or reservoir, as repre-sented in the figure. By this ar-rangement no water… … Historical Introduction. 59 GAINING AND LOSING BUCKETS. In the latter part of the Sixteenth, or beginning of theSeventeenth Century a machine which is entitled to particularnotice on account of its being, asclaimed, the first one of the kind to beself-acting, for raising water was in usein Italy.…
Hydraulic machinery · Pumping machinery
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