Electric arc welding machines, electric welding machines, gas operated welding machines, welding torches and welding peripherals, namely, welding generators machines for automatically changing welding contact tips, specially adapted for use with electric arc welding machines; electric arc welding machines, electric welding machines, gas operated welding machines, welding torches and welding peripherals for automatically changing welding nozzles, specially adapted for use with electric arc welding machines; welding torches, namely, torch cleaning stations specially adapted for use with electric arc welding machines; electric welding machines and welding torches, namely, welding torch nozzle cleaners specially adapted for use with electric arc welding machines for cleaning the interior of a welding torch nozzle; electric welding machines for reproducing welding contact tips for use with electric arc welding machines; electric welding machines for replacing welding rods specially adapted for use with electric arc welding machines