does anyone have a good closeup shot of arcwelders as used in tank factories in the 40's and 50's

hi the question is to general , you need to specify the country as each had their own types , in the ship yards in the uk it was either a static box with a handle that crossed over the studs to give different amps or a rotorary convertor that changed ac to dc , with a similar box on the top , i have no photos but used to maintaine them , cheers ian

specifically i am modelling a mothballed sherman as seen in a sherman factory on or about1944, it sits in 4 wheels and there are several of them around one project.