Pressure differential tester

Claim 1

APPARATUS FOR THE RAPID PRODUCTION TESTING OF TUBES FOR LEAKAGE COMPRISING A PAIR OF SEALING HEADS FOR ATTACHMENT TO THE OPEN ENDS OF A PAIR OF TUBES TO BE TESTED, THE OTHER ENDS OF THE TUBES BEING CLOSED, A SUPPLY OF AIR UNDER HIGH PRESSURE, SEPARATE SUPPLY PASSAGES CONNECTING SAID HEADS IN PARALLEL TO SAID AIR SUPPLY TO CHARGE THE INTERIOR OF THE TUBES CONNECTED TO SAID HEADS SIMULTANEOUSLY WITH AIR UNDER IDENTICAL HIGH PRESSURE, A MANOMETER TUBE HAVING ITS ENDS CONNECTED TO SAID HEADS AND THENCE TO THE INTERIOR OF THE TUBES, OUTLET PASSAGES CONNECTED IN PARALLEL TO SAID HEADS AND THENCE TO THE INTERIOR OF THE TUBES, INLET VALVE MEANS FOR SUPPLYING AIR SIMULTANEOUSLY THROUGH SAID HEADS TO THE TUBES, OUTLET VALVE MEANS CONTROLLING THE FLOW OF AIR THROUGH SAID OUTLET PASSAGES FOR EXHAUSTING AIR FROM THE TUBES, SOLENOID MEANS FOR ACTUATING SAID OUTLET VALVE MEANS TO INSURE SIMULTANEOUS EXHAUST OF HIGH PRESSURE AIR FROM THE TUBES.