These are Houdini's Conradi Lamps that he used in his 3-In-One Show in 1926. These are being presented by Doug Henning on one of his annual TV specials. The clip is short, it only shows the Conradi Lamps.
Friedrich Conradi was a German Magic Dealer and builder who built wonderful apparatus magic around the turn of the 19th into 20th centuries.