Internally heated cold manifold mold

Claim 1

IN A MOLD HAVING PARTIBLE MOLD SECTIONS DEFINING A PLURALITY OF CAVITIES THEREBETWEEN FOR RECEIPT OF THERMOPLASTIC MATERIAL THEREIN, AN INTERNALLY HEATED COLD MANIFOLD MOUNTED ON ONE OF THE MOLD SECTIONS AND HAVING HORIZONTALLY-EXTENDING AND VERTICALLY-EXTENDING INTERCONNECTING CHANNELS IN SAID MANIFOLD FORMING AN INTERCONNECTED NETWORK, THE VERTICALLY-EXTENDING CHANNEL BEING OFFSET RELATIVE TO THE RESPECTIVE INTERCONNECTED HORIZONTALLYEXTENDING CHANNEL, AN INLET OPENING IN SAID MANIFOLD COMMUNICATING WITH AT LEAST ONE OF SAID CHANNELS, HEATING ELEMENTS EXTENDING INTO EACH OF SAID CHANNELS FROM THE MOLD EXTERIOR, THE HEATING ELEMENTS DISPOSED IN SAID HORIZONTALLY-EXTENDING CHANNELS COMPRISING A HEATING CARTRIDGE SLEEVED BY A METAL SHEATH THREADEDLY ENGAGED IN SAID CHANNELS AND HAVING A PLURALITY OF RADIAL RIBS EMBRACING THE WALLS OF SAID CHANNELS, NOZZLES IN SAID VERTICALLY-DISPOSED CHANNELS OPENING INTO SAID CAVITIES, THE HEATING ELEMENTS DISPOSED IN SAID VERTICALLY-EXTENDING CHANNELS COMPRISING A HEATING CARTRIDGE SLEEVED BY A METAL SHEATH THREADEDLY ENGAGED AT ONE END IN ONE OF SAID CHANNELS AND SLEEVED AT ITS OPPOSITE END BY ONE OF SAID NOZZLES, AND TEMPERATURE CONTROL MEANS FOR EACH OF SAID HEATING ELEMENTS WHEREBY THE TEMPERATURE OF THE THERMOPLASTIC MATERIAL IN THE CAVITIES OF THE MOLD AND IN SAID CHANNELS OF THE MANIFOLD MAY BE INDIVIDUALLY CONTROLLED.