Lubricator

—A device used for holding oil or grease and supplying it in regular amounts to a journal or bearing. The supply is fed either by worsted syphons, by gauged drips, or by a needle which 256 Luminous Arc Lamp. comes up from the shaft through the neck of the lubricator and induces feeding by — capillary attraction and the shaking of the — needle. Also called sight feed lubricator, grease cup, etc.