Really old thread but thought id add to it. There may be years that the jacks had sticker labels and were also made in the usa. I just picked up a ya632 sticker label jack 1.5 ton that the sticker says made in usa so maybe later that phased out and they sourced elsewhere but it seams there are...
Do you have any info on your little 180 amo welder? Any pics of it?. I picked one up from the early 60s and my model number in the catalogs shows 115/230 as options while all the other models show just 230. I'm hoping to figure out if mine can be wired for 115 and used in my garage. Thanks