Hose coupling

Claim 1

A HOSE COUPLING FOR GRIPPING THE END OF A FLEXIBLE HOSE WHICH HAS INNER AND OUTER LAYERS AND A REINFORCEMENT THEREBETWEEN, SAID COUPLING INCLUDING A SOCKET AND A NIPPLE, SAID SOCKET HAVING AN INTERNALLY THREADED BORE OPEN AT ONE END, SAID THREAD AT SAID OPEN END BEING RELATIVELY SHARP AT ITS MINOR DIAMETER FOR CUTTING A HELICAL SLIT IN SAID OUTER LAYER UPON THREADING OF SAID SOCKET OVER SAID HOSE END, AND THE THREADS INWARD TO SAID SHARP THREAD BEING RELATIVELY BLUNT AT THEIR MINOR DIAMETER AND RECEIVED IN SAID HELICAL SLIT, SAID NIPPLE BEING INSERTIBLE IN SAID HOSE END AFTER THREADING OF SAID SOCKET ONTO SAID HOSE, SAID BLUNT THREADS HAVING A MINOR DIAMETER UP TO THE INITIAL OUTSIDE DIAMETER OF SAID REINFORCEMENT AND SAID BLUNT THREADS HAVING ANNULAR SPACES THEREBETWEEN WHICH ARE AT LEAST AS GREAT IN DIAMETER AS THE INITIAL OUTSIDE DIAMETER OF SAID OUTER LAYER, SAID SHARP THREAD HAVING A MINOR DIAMETER WHICH GRADUALLY DECREASES FROM A DIAMETER GREATER THAN THE INITIAL OUTSIDE DIAMETER OF SAID REINFORCEMENT TO THE MINOR DIAMETER OF SAID BLUNT THREADS, AND SAID NIPPLE HAVING AN OUTSIDE DIAMETER LARGER THAN THE INSIDE DIAMETER OF SAID INNER LAYER AFTER INSERTION OF SAID HOSE INTO SAID SOCKET, WHEREBY UPON INSERTION OF SAID NIPPLE INTO SAID HOSE END, SAID REINFORCEMENT IS FORCED INTO TIGHT GRIPPING ENGAGEMENT WITH THE MINOR DIAMETER OF SAID BLUNT THREADS AND THE PORTIONS OF SAID REINFORCEMENT OPPOSITE THE SPACES BETWEEN SAID BLUNT THREADS ARE ARCHED INTO SAID SPACES TO FORM HOLDING SHOULDERS ON SAID REINFORCEMENT ENGAGED BY SAID BLUNT THREADS FOR INCREASING THE EFFECTIVE GRIP OF SAID SOCKET UPON SAID HOSE END.