7 NUMERICALLY CONTROLLED CUTTING TABLES; CONVEYOR SYSTEMS, MAINLY COMPRISING CONTINUOUS CONVEYORS, FLOOR, STRAIGHT, BELT AND, OVERHEAD CONVEYORS; PLATE CONVEYORS, VERTICAL CONVEYORS, JIGGER CONVEYORS, GRAVITY CONVEYORS; SYNCHRO, TABLE, AND DISTRIBUTOR CONVEYORS; TROLLEY CONVEYORS; CAROUSEL TYPE CONVEYORS; FEEDING AND TRANSFER SYSTEMS, MAINLY COMPRISING MULTI-TIER BELT CONVEYORS, CONVEYOR LINES, METAL ROLL CONVEYORS AND WHEEL TRACK CONVEYORS, RETARDING DISK CONVEYORS, AND LIVE-STORAGE RACK CONVEYORS