Lucerne

See ALFALFA. IMG:content-1165.png:[merged small][graphic] IMG:content-1166.png:[graphic][graphic][merged small] over the latter by grooves cut in the bearing. In oil bath lubrication, which is the most efficient, the bearing is partly submerged in the lubricant, which the shaft carries with it into the pre ure Car-journals are lubricated on this plan, cotton waste being used to hold the oil from wastage. Pad lubrication consists of a strip of felt or similar material in the bottom of the box which holds the oil and keeps the bearing unctuous. For lubrication of crank-pins, siphon or spatter cups may be used, or the lubricant may be supplied at or near the center of motion and be forced to the bearing by centrifugal force. Modern practice supplies oil from a cup to a flat piece of wick or other woven web, whose under side a flat strip of metal in an open cup scrapes each time as the crank pa es its upper center. The oil collected on the web flows into the cup and into the bearing.