84 A.2d 522 Potanko v. Sears, Roebuck Company, Appellant. Supreme Court of Pennsylvania.September 27, 1951. November 15, 1951. Negligence — Active conduct — Creating dangerous condition — Independent contractor — Vendor of chattel — Contributory negligence — Practice — New trial. 1. Where the original defendant sold certain radiators to adult plaintiffs which were delivered […]