"I would say it would do the job, looks like it would be a bit rough on a carpet and maybe the floor. Since replaced by grabbers with MUCH smaller pins and anchors that press on the baseboards. Most carpet layers use "knee kickers" nowadays."
"Any carding tools I've seen were very short, fine needles. My first thought was a meat cubing/tenderizing tool. What ever it is it doesn't look like it was used much. My Dad said some antiques survive because they didn't work very…"
"If those are "clock springs" I see poking out I suspect it is a suspension device to take the weigh of a tool like on an assembly line, to prevent operator fatigue. Spring balancers they call them today."