Piston and cylinder Piston and cylinder its uses and production, in mechanical designing, sliding piston with a shut head (the cylinder) that is moved proportionally in a somewhat bigger round and hollow load (the chamber) by or against weight of a liquid, as in a motor or pump. The piston of a steam motor (q.v.) is shut by plates at the two finishes, with arrangement for the cylinder pole, which is unbendingly appended to the cylinder, to go through one of the end cover plates by methods for an organ and stuffing box (steam-tight joint). The piston of an interior ignition motor is shut down toward one side by a plate called the head and open at the opposite end[…]