7 POWER OPERATED MECHANICAL EQUIPMENT FOR THE WINDING, UNWINDING, REELING, AND HANDLING OF CABLE, LINE, WIRE AND HOSE, NAMELY, WINDERS, UNWINDERS, REELERS, AND HANDLERS; MECHANICAL REELS AND DRUMS FOR ELECTRICAL CABLE, LINE, WIRE, AND HOSE AND PARTS THEREOF, COILING MACHINES FOR COILING, ENVELOPING, UNCOILING, HANDLING AND MANEUVERING OF DRUMS AND REELS FOR ELECTRICAL CABLE, LINE, WIRE, AND HOSE AND PARTS THEREOF, SYSTEMS FOR COILING , ENVELOPING, UNCOILING, HANDLING AND MANEUVERING OF DRUMS AND REELS FOR ELECTRICAL CABLE, LINE, WIRE, AND HOSE COMPRISING COILING MACHINES, AND COIL ASSEMBLIES COMPRISING HOLLOW TUBULAR SLEEVES, SIDE SUPPORTS AND A RELEASABLE SHAFT AND PROTECTIVE CASINGS SOLD AS A UNIT