(of a water wheel) Having the water introduced just behind the summit, combining the advantages of breastshot and overshot systems, since the full amount of the potential energy released by the falling water is harnessed as the water descends the back of the wheel.
A water wheel where the stream of water strikes neither so high as in the overshot wheel, nor so low as in the undershot, but generally at about half the height of the wheel, being kept in contact with it by the breasting. The water acts on the float boards partly by impulse, partly by its weight.
(engineering) A water wheel having a vertical axis and an inner and outer tapering shell, between which are vanes or floats attached usually to both shells, but sometimes only to one.
A wheel forming part of the machinery in a watermill, mounted on the opposite end of the axle to the waterwheel, and driving the wallower on the upright shaft or layshaft.
A revolving circular plate, set obliquely on its shaft, and acting as a cam to give a reciprocating motion to a rod in a direction parallel to the shaft.
A kind of undershot water wheel with characteristic curved blades.
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