Gas meter change-over fitting

Claim 1

A GAS METER CHANGE-OVER FITTING OF THE CHARACTER DESCRIBED AND DESIGNED FOR CONNECTION IN A SERVICE LINE LEADING FROM THE OUTLET OF A GAS METER, SAID FITTING COMPRISING A T HAVING FIRST AND SECOND ALIGNED INLET LEGS PRESENTING A COMMON CYLINDRICAL BORE THERETHROUGH, AND A MEDIAL OUTLET LEG PRESENTING A LATERAL CYLINDRICAL BORE INTERSECTING THE COMMON BORE, SAID FIRST INLET LEG BEING ADAPTED FOR CONNECTION TO THE METER OUTLET, SAID OUTLET LEG BEING ADAPTED FOR CONNECION TO A PORTION OF THE SERVICE LINE LEADING TO A SERVICE OUTLET, A VALVE PLUG FORMED OF RESILIENT MATERIAL AND SLIDABLY DISPOSED WITHIN SAID COMMON BORE AND MOVABLE BETWEEN AN INOPERATIVE POSITION WHEREIN IT IS DISPOSED IN AND SEALS OFF THE SECOND INLET LEG THUS ESTABLISHING COMMUNICATION BETWEEN THE FIRST INLET LEG AND THE OUTLET LEG, AND AN OPERATIVE POSITION WHEREIN IT IS DISPOSED IN AND SEALS OFF THE FIRST INLET LEG THUS ESTABLISHING COMMUNICATION BETWEEN THE SECOND INLET LEG AND THE OUTLET LEG, A GUIDE CAP REMOVABLY RECEIVED OVER THE OUTER END OF THE SECOND INLET LEG, AN OPERATING ROD PROJECTING THROUGH AND SLIDABLE IN SAID GUIDE CAP, SAID VALVE PLUG BEING FORMED WITH A THREADED SOCKET THEREIN, THE INNER END OF SAID OPERATING ROD BEING THREADED FOR REMOVABLE RECEPTION IN SAID THREADED SOCKET TO THE END THAT THE OPERATING ROD MAY BE REMOVABLY CONNECTED TO THE VALVE PLUG IN PUSH-PULL RELATIONSHIP, SAID T BEING FORMED WITH AN ELONGATED SPLINE THEREON INTERNALLY OF SAID COMMON BORE, THE OUTER FACE OF SAID VALVE PLUG BEING PROVIDED WITH A SPLINE-RECEIVING RECESS WHICH SLIDABLY RECEIVES SAID SPLINE AND COACTS THEREWITH TO PREVENT ROTATIVE MOVEMENT OF THE VALVE PLUG WITHIN SAID COMMON BORE AND THUS FACILITATE THREADED ENGAGEMENT BETWEEN THE OPERATING ROD AND VALVE PLUG, AND MEANS FOR INTRODUCING GAS UNDER PRESSURE TO THE INTERIOR OF SAID GUIDE CAP.