The No. 70 was marketed as a "box scraper," although it's actually a little plane, specifically for cleaning off stencils and other markings from boxes for re-use. The No. 82 appears in their 1914 catalog (and no doubt others) in with the scrapers, for flooring, cabinetwork, and the like.
They're nicely designed tools. I've yet to use mine, but the price was right, and I know the time will come...