7 Cargo handling machines; Cranes; Electric arc welding apparatus; Electric drills; Electric hammers; Elevators; Engines for air cushion vehicles; Flues for engine boilers; Material handling machines, namely, palletizers, case elevators, automatic pallet dispensing machines and automatic slip sheet dispensing machines; Power-operated hand-held crimpers; Pumps as parts of machines, motors and engines; Valves being parts of machines