Manufacture of hollow articles from organic plastic materials

Claim 1

A MACHINE FOR MAKING HALLOW ARTICLES FROM ORGANIC PLASTIC MATERIAL BY THE PROCESS OF BLOWING AN EXTRUDED TUBE OF THE MATERIAL WITHIN A MOULD, COMPRISING A DOWNWARDLY DIRECTION ANNULAR EXTRUSION NOZZLE, MEANS FOR FEEDING PLASTIC MATERIAL TO SAID NOZZLE TO EXTRUDE TO PLASTIC TUBE THERETHROUGH, A MULTI-PART MOULD POSITIONED BELOW SAID EXTRUSION NOZZLE, MEANS FOR OPENING AND CLOSING SAID MOLUD, A BLOWING TUBE MOUNTED VERTICALLY AND DIRECTLY BENEATH AND IN ALIGNMENT WITH SAID EXTRUSION NOZZLE, A IPISTON, CARRIED BY THE MACHINE AND CONNECTED TO SAID BLOWING TUBE TO MOVE THE LATTER VERTICALLY FROM A RAISED POSITION IN WHICH THE UPPER END OF THE BLOWING TUBR IS EMBRACED BY THE MOULD PARTS, WHEN CLOSED, AND A LOWERED POSITION IN WHICH THE UPPER END OF THE BLOWING TUBE IS PLACED BELOW THE BOTTOM OF THE MOULD, A STRIPPER MEMBER HAVING AN OPENING THEREIN SURROUNDING THE BLOWING TUBE, MEANS SUPPORTING SAID STRIPPER MAMBER ON VERTICAL GUIDES FOR VERTICAL MOVEMENT, STOP MEANS LIMITING THE UPPER AND LOWER POSITIONS OF MOVEMENT OF SAID STRIPPER MEMBER LOST MOTION MEANS INTERCONNECTING THE BLOWING TUBE WITH THE MEANS SUPPORTING THE STRIPPER MEMBER, SAID LOST MOTION MEANS RESTRICTING THE RELATIVE MOVEMENT BETWEEN THE BLOWING TUBE AND THE STRIPPER MEMBER TO A DISTANCE WHICH PREVENTS THE UPPER END OF THE BLOWING TUBE FROM BEING MOVE BELOW THE BOTTOM OF THE STRIPPER MEMBER, A PASSAGE IN SAID STRIPPER MEMBER, MEANS FOR FLOWING A COOLING FLUID THROUGH SAID PASSAGE, AND MEANS FOR SUPPLYING A BLOWING FLUID TO SAID BLOWING TUBE.