Awards N.I.A. First Place Porcelain Greater Chicago Insulator Club Award for best exhibit using power insulators If the name Thomas on these gorgeous porcelain multiparts has a familiar ring, it is for a very good reason. The display, "Ringed Multiparts", is a complete collection of all the known ringed multiparts. The rings are visible on the underside of the top umbrella of the insulators and are covered by a December 11, 1906 patent. Yes, most of the insulators are upside-down.