A pretty interesting older welder, this is a Hobart Simplified Arc Welder. It’s a welding machine, that’s powered by an electric motor. I’ve seen something similar that i believe were called torpedo welders. Although the one i saw was a Lincoln model if I recall correctly.
From what I was told, by an older gentleman who was much more familiar with them than I was, they were basically the same as their engine driven counterparts except that they used an electric motor to spin the generator instead of a gas or diesel engine. Allegedly, this was done due to the shortage of gas or diesel engines during the war. I suspect that this portion may be a bit of folklore though.
Regardless of the reason, I’d guess that this would be a very good welder. You’d get the smoothness of those great generators driven by the consistency and power of an electric motor.
I can’t read the tag on the picture, but I’m pretty sure it’s a 3 phase motor that’s used to power it. Since the gas engine powered counterpart was a 200 amp welder, I’m going to assume that this is the same. If anyone knows anything about this welder, or has some better pictures, feel free to send them in!