Garage sale find

Ok, didn't find anyone wanting to sell their garage, but did find this in one. It is a Marquette welder and it is set up for gas. I have never heard of them before and now need to find where I can find a new liner for it. It seemed to work good, but went to change the wire and it won;t let it go more than about an inch and it stop. Any way got it for $30, didn't think that was a bad price for it