Abstract: Overboot waders are of durable and lightweight construction to be drawn over the user's boots for use only while walking or standing in water during hunting and fishing. The waders are made from waterproof material shaped and bonded to form integral leg and foot portions. A multi-ply sole of waterproof material is shaped to fit either foot and bonded to the end edges of the foot portion.

Abstract: A card screen with side frames and central rib penetrated with longitudinally spaced transverse openings and transverse bars equipped with pins and sockets supported in the transverse openings to secure the screen together without solder.

Abstract: A combination web cover and suction chamber define a crush roll plenum which communicates with and extends forwardly from the doffer plenum of a suction cleaning system for carding machines. It includes a suction opening closely spaced from the top crush roll and its scraper blade to continuously pick up accumulations of lint taken from the crush roll by the scraper blade. Intermittent blasts of compressed air are directed toward the scraper blade to purge it of accumulations of foreign matter which is blown into the continuous suction current.