7 machine parts for cranes; namely, tongs for gripping stacks of stones, bricks and building blocks, and component parts for such tongs; namely, spring supported guide rails, spring supported sheet metal guides, joint connectors, universal joints, and height stops for quick adjustment of the plunge depth required, presser rails, steel sprag rails, and inserts for manhole rings; machine parts for cranes; namely, lifting tongs for gripping roof sheeting and roof tile, crane forks, turning forks, and accessories for crane forks; namely, guard baskets, double shell grippers, accessories for double shell grippers; namely, plug-type pressing machines; crane grippers; namely, sheeting, curbstone, hay, forestry, beet, cane, manhole shaft ring cleaning, multiple shell, and wood grippers; hydraulic gripper saws; truck loading crane machine parts; namely, power driven container emptying machines; loading crane and excavator machine parts; namely, power driven mast erectors and barrel grippers; machine parts for cranes; namely, anti-swing brakes for tong and forklift grippers; rotary hydraulic motors