CONVEYOR MACHINES AND CONVEYOR BELT CLEANING MACHINES; CHUTES FOR MATERIAL DISCHARGED ONTO OR OFF CONVEYOR BELTS; BELT CONVEYOR SKIRTBOARDS AND SEALS; CONVEYOR MACHINE PARTS, NAMELY, SCRAPER BLADES AND SCRAPER BLADE SUPPORT COMPRISED OF CHANNEL TRACK, BACKING PLATE AND TORSION MOUNTS; CLAMPS AND SUPPORT DEVICES FOR CONVEYOR BELTS, NAMELY, RODS, BARS, CHANNELS, TUBING AND PLATES; CONVEYOR SKIRTBOARDS AND SEALS