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Knight's Mechanical Encyclopedia (ed. Knight), W. (search)
nd open the other of the induction-openings. The same movement operates to open one and close the other of the eduction-openings, a rapid motion being imparted to the rod s s′ toward the end of each stroke by the arms x x′, which have friction-rollers on their ends acting against the wipers r r′, and are actuated by springs y y. The eduction-passages h i coalesce in a single pipe. See also Fig. 2970, B (two figures). Class 7. The bucket and balance. Balancing-chamber water-meter. Weller's (Fig. 7119), though adapted for use as a water-meter, is more particularly designed for oil, spirits, etc. It consists of a box or frame A A, on which are mounted two casks of equal capacity, and rocks upon a central pivot. Two levers H H′ are connected by chains F F to quadrants G G or their equiva- lents, which operate to open the induction and close the eduction cock of each cask when it is tilted into elevated position, and vice versa. When a cask becomes filled, its weight overcome