Deckles for plastic extrusion machines

Claim 1

A DECKLE ROD ASSEMBLY FOR A FLAT FILM DIE INCLUDING A DIE BODY HAVING A PAIR OF LONGITUDINALLY EXTENDING DIE LIPS DEFINING AN EXTRUDING ORIFICE THEREBETWEEN, COMPRISING A LONGITUDINALLY EXTENDING DECKLE CARRIER HAVING A BODY AND A PAIR OF UPWARDLY EXTENDING ARMS LEADING FROM SAID BODY AND TERMINATING IN INWARDLY EXTENDING ENDS, MEANS ON SAID DIE LIPS DEFINING A TRACK RECEIVING SAID ENDS AND MOUNTING SAID CARRIER FOR SLIDING MOVEMENT THEREON, A LONGITUDINALLY EXTENDING BAR CARRIED IN SAID CARRIER BETWEEN SAID ARMS, REPLACEABLE PACKING MEANS CARRIED ON SAID BAR AND POSITIONED AGAINST SAID DIE LIPS AT SAID ORIFICE FOR EXTERNALLY SEALING SAID ORIFICE, MEANS ON SAID CARRIER BODY URGING SAID BAR AND SAID PACKING MEANS AGAINST SAID DIE LIPS, AND CONTROLLABLE MOTOR MEANS ON SAID BODY HAVING A CONNECTION TO SAID CARRIER AND OPERABLE TO EFFECT SAID SLIDING MOVEMENT THEREOF ON SAID TRACK FOR REGULATING THE WIDTH OF EXTRUSION FROM SAID DIE.