23 MACHINES AND TOOL MACHINES-NAMELY, LATHES, CUTTERS, DRILL MACHINES, PRESSES, GRINDING MACHINES, HONING MACHINES, CALIBRATION MACHINES, AND COMBINATIONS OF THESE MACHINES; ENGINES-NAMELY, INTERNAL COMBUSTION ENGINES, HYDRAULIC MOTORS, PNEUMATIC MOTORS, ELECTRIC MOTORS, AND COMBINATIONS OF THESE MOTORS; AGRICULTURE IMPLEMENTS-NAMELY, MACHINES FOR CUTTING, PRUNING, BARKING AND CHIPPING TREES AND COMBINATIONS OF THESE MACHINES; DIGGING MACHINES; EXCAVATING MACHINES; HATCHING APPARATUS-NAMELY, A DEVICE FOR CLOSING AND OPENING OF HATCH COVERS ON SHIPS, FACTORY GATES AND FLOOR GATES; TRACTORS; CRANES, ELEVATORS AND PUMPS FOR LOADING AND UNLOADING MATERIALS