Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 196
hand wheel as shown inFig. 166, hence, one pinion xauses the other to revolve. The teeth on the bottom side of the pinions move away from each other andform a partial vacuum which the waterfills and is carried around between theteeth of the pinions on opposite sidesand is discharged through a… … FlO. 166.
Hydraulic machinery · Pumping machinery
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