Dispenser for liquids or semi-liquids

Claim 1

A DISPENSER FOR LIQUID OR SEMI-LIQUID MATERIALS, SAID DISPENSER COMPRISING A HOUSING HAIVNG IN THE NORMAL POSITION THEREOF A BASE AT THE BOTTOM THEREOF AND AN OPEN TOP, SAID HOUSING PROVIDING A GENERALLY CYLINDRICAL STORAGE CHAMBER WITH A VERTICAL AXIS AND HAVING A LATERALLY OFFSET PORTION EXTENDING FOR THE LENGTH OF THE HOUSING, SAID LATERALLY OFFSET PORTION HAVING AN ANNULAR WELL IN THE BASE PORTION OF THE STRUCTURE, A SEPARATE PREFABRICATED PUMP CYLINDER TUBE DISPOSED IN THE LATERALLY OFFSET PORTION AND HAVING ONE END RESTING IN SAID WALL AND SEALED THEREIN, A VERTICALLY MOVABLE PISTON AND PISTON ROD ASSEMBLY WITHIN SAID PUMP CYLINDER, A BEARING STRUCTURE FOR SAID PISTON ROD RIGIDLY ATTACHED TO SAID HOUSING ADJACENT THE TOP THEREOF, SAID BEARING STRUCTURE CLOSING THE TOP END OF SAID PUMP CYLINDER AND PROVIDING A CLEARANCE REGION ALONG THE PISTON ROD FROM THE BOTTOM OF SAID BEARING STRUCTURE UPWARDLY FOR A PORTION OF THE LENGTH OF SAID BEARING STRUCTURE, SAID BEARING STRUCTURE HAVING A LATERAL RELIEF PORT EXTENDING BETWEEN SAID CLEARANCE REGION AND THE STORAGE CHAMBER WITH THE PISTON ROD EXTENDING ABOVE THE BEARING STRUCTURE AND TERMINATING IN A HANDLE, SO THAT ON PISTON MOVEMENT ALONG THE CYLINDER AXIS, AIR ABOVE SAID PISTON MAY MOVE INTO OR OUT OF THE STORAGE CHAMBER, SAID BASE HAVING A HORIZONTALLY DISPOSED VALVE CHAMBER WITH A VALVE MEMBER ROTATABLE THEREIN ABOUT A HORIZONTAL AXIS, SAID VALVE CHAMBER HAVING VALVE INLET PASSAGES FROM THE BOTTOM, OF SAID PUMP CYLINDER AND STORAGE CHAMBER RESPECTIVELY, SAID VALVE CHAMEBR HAVING A VALVE OUTLET AT THE BOTTOM OF THE BASE, SAID VALVE MEMBER HAVING SUITABLE PASSAGES FOR THREE-WAY VALVE OPERATION, MEANS FOR ENGAGING ON END OF SIAD VALVE MEMBER FOR TURNING THE SAME ABOUT THE AXIS OF SAID VALVE CHAMBER, AND MEANS AT THE OTHER END OF SAID VALVE MEMBER FOR MAINTAINING SAID VALVE MEMBER IN POSITION WITHIN SAID VALVE CHAMBER AGAINST ENDWISE REMOVAL, SAID LAST NAMED MEANS INCLUDING AN END CAP FOR COVERING ONE END OF SAID VALVE CHAMBER, SAID END CAP HAVING A FLEXIBLE O RING FOR SEALING PURPOSES.