Office laminating machine

Claim 1

IN AN OFFICE LAMINATING MACHINE, THE COMBINATION OF A FRAME PROVIDING AN OPENING FOR RECEIVING DOCUMENTS, A PAIR OF HEATED ROLLERS BIASED TOGETHER AND ARRANGED ADJACENT SAID OPENING, MEANS ON SAID FRAME FOR DRIVING SAID HEATED ROLLERS, A PAIR OF SUPPLY ROLLS EACH SUPPLYING A FILM OF TRANSPARENT PLASTIC LAMINATING MATERIAL TO SAID HEATED ROLLERS SO THAT A DOCUMENT FED INTO SAID OPENING IS SANDWICHED BETWEEN TWO LAYERS OF FILM AND BONDED TOGETHER BY THE ACTION OF HEAT AND PRESSURE, EACH OF SAID HEATED ROLLERS COMPRISING A HOLLOW METAL CYLINDER OF LOW HEAT CAPACITY HAVING HOLLOW TRUNNIONS AT ITS ENDS AND HAVING A TUBULAR HEATING ELEMENT LOCATED AT ITS AXIS, SAID HEATING ELEMENTS BEING FORMED OF A RADIATION-TRANSPARENT TUBE HAVING A RADIANT COIL LONGITUDINALLY ARRANGED THEREIN AND CONNECTED TO TERMINAL RODS PROJECTING FROM THE ENDS OF THE TUBE, SAID TERMINAL RODS BEING TELESCOPED INTO SAID HOLLOW TRUNNIONS AND INSULATED THEREFROM, WIPERS MOUNTED ON SAID FRAME FOR CONTACTING THE ENDS OF THE TERMINAL RODS AND THERMOSTATS MOUNTED ON SAID FRAME AND RIDING ON SAID HEATED ROLLERS RESPECTIVELY FOR SENSING THE TEMPERATURE THEREOF AND THEREBY CONTROLLING THE ENERGIZATION OF THE RESPECTIVE HEATING ELEMENTS.