http://photos.app.goo.gl/d28gDXQ6nX2Ta21JA
Maybe this will work? I don't seem to have many of the features you're mentioning when working with this site on my mobile but I'm not going to give up.
It's been such a mystery. Yes the cabinet has straight metal legs. It most resembles something like a cabinet no. 404 (from the 50's)but with a treadle wheel attached in the most unique way.