Multi-piston dosing and dispensing cock

Claim 1

A MULTI-PISTON COCK FOR PASTY SUBSTANCES, COMPRISING A CYLINDER OPEN AT ITS UPPER END AND CLOSED AT ITS BOTTOM END BY MEANS OF A CLOSURE MEMBER PROVIDED WITH AT LEAST A THROUGH BORE, SAID CYLINDER COMPRISING AN UPPER SECTION, AN ADJOINING MIDDLE SECTION HAVING AN INTERNAL DIAMETER SLIGHTLY GREATER THAN THE INTERNAL DIAMETER OF THE UPPER SECTION, AND A LOWER SECTION PROVIDED WITH MEANS FOR PUTTING SAID MIDDLE SECTION INTO COMMUNICATION WITH SAID BORE IN SAID CYLINDER CLOSURE MEMBER, A RADIAL PORT IN SAID CYLINDER OPENING ABOVE SAID MIDDLE SECTION, A HOLLOW PISTON PROVIDED WITH AN INTERNAL CHAMBER SLIDABLY MOUNTED INSIDE SAID CYLINDER AND RECIPROCABLE FROM A LOWERMOST POSITION IN WHICH IT RESTS AGAINST THE SAID CYLINDER CLOSURE MEMBER TO AN UPPER POSITION ABOVE SAID RADIAL PORT, AN AXIAL BORE IN THE BOTTOM OF SAID HOLLOW PISTON OPENING AT THE BOTTOM OF SAID CHAMBER, A PISTON ROD SLIDABLY GUIDED THROUGH SAID AXIAL BORE INTO SAID CHAMBER, ABUTMENT MEANS ON SAID ROD INSIDE SAID CHAMBER FOR LIMITING THE AXIAL MOVEMENT IN ONE DIRECTION OF SAID PISTON ROD BY ABUTMENT AGAINST THE BOTTOM OF SAID CHAMBER, A PISTON-LIKE MEMBER SECURED TO SAID ROD OUTSIDE SAID CHAMBER AND TIGHTLY RECOPROCABLE INSIDE SAID CYLINDER MIDDLE SECTION, FROM A POSITION IN WHICH IT ABUTS AGAINST SAID CYLINDER CLOSURE MEMBER, AND IN WHICH IT ESTABLISHES COMMUNICATION BETWEEN SAID MIDDLE SECTION AND THE BORE ON THE CYLINDER CLOSURE MEMBER, UP THROUGH THE WHOLE MIDDLE SECTION OF THE CYLINDER, AND ACTUATING MEANS FOR RECIPROCATING SAID HOLLOW PISTON INSIDE SAID CYLINDER FROM A LOWERMOST POSITION IN WHICH SAID PISTONLIKE MEMBER ABUTS AGAINST SAID CYLINDER CLOSURE MEMBER TO AN UPPER POSITION IN WHICH SAID HOLLOW PISTON IS LIFTED ABOVE SAID CYLINDER RADIAL PORT.