7 Machines for railway construction, repair and maintenance, namely, power-operated grinders, saws, drills, rail notchers, flangeway cleaners, impact wrenches, lag drivers, deadhead drivers, spike pullers, tie tampers, railroad rail clip removers, railroad rail clip installers, rail pullers, weld shears, spike setters, and spike testers; railway electric welding machines; welding and soldering equipment, namely, power tools in the nature of weld shears, weld blocks, and trimmers; railway grinding machines; drilling machines; ballast tamping machines; lifting machines for moving, handling, and positioning railway rails; hydraulically actuated tools, namely, grinders, saws, drills, rail notchers, flangeway cleaners, impact wrenches, lag drivers, deadhead drivers, spike pullers, tie tampers, railroad rail clip removers, railroad rail clip installers, rail pullers, weld shears, spike setters, and spike testers; machines for installing, removing, tightening and loosening rail fastenings components, namely, power-operated spike setters, spike testers, spike pullers, and spike drivers; lubrication machines; power-operated lubricant dispensers for railway rails; power-operated devices for processing rail joints before welding, namely, preheaters, weld clamps, clamps for welds, weld molds, rail saws, and drills; cutting machines; hydraulic power units