QUADRANT. — A beam constructed with one half at right angles with the other half, like the letter . It is used for converting a horizontal into a vertical motion, as in the case of an engine being required to pump from a shaft at some distance from it. It is frequently made double acting as in spears being hung on each end. The horizontal spear from the engine is attached to the top of the vertical leg.

QUARL. — A flag made of burnt fire-clay, used for flooring coke ovens, and other purposes.