Adjustable strap buckle

Claim 1

A PLASTIC BUCKLE ADJUSTABLE ALONG A STRAP COMPRISING A FRAME HAVING A FIRST LATERAL SLOT ADJACENT ONE END OF THE FRAME TO DEFINE A FIRST BAR EXTENDING ACROSS SAID ONE END OF THE FRAME AND A SECOND LATERAL SLOT SPACED FROM SAID FIRST SLOT TO DEFINE AN INTERMEDIATE BAR THEREBETWEEN, SO THAT A STRAP THREADED FORWARDLY THROUGH SAID FIRST SLOT FROM SAID ONE END OF THE FRAME AND THEN REARWARDLY THROUGH SAID SECOND SLOT EXTENDS OVER SAID INTERMEDIATE BAR AT THE FRONT OF THE LATTER; AND A LOCKING MEMBER HAVING A GROOVE EXTENDING ALONG AND OPENING AT ONE END EDGE OF THE LOCKING MEMBER AND RECEIVING SAID FIRST BAR OF THE FRAME TO MOUNT SAID LOCKING MEMBER FOR SWINGING RELATIVE TO THE FRAME BETWEEN A FORWARDLY PROJECTED RELEASED POSITION AND A LOCKED POSITION WHEREIN SAID LOCKING MEMBER LIES AGAINST THE FRONT OF SAID FRAME, SAID LOCKING MEMBER HAVING FIRST AND SECOND PROJECTIONS EXTENDING LATERALLY THEREACROSS AND SPACED APART BY A DISTANCE SUBSTANTIALLY EQUAL TO THE WIDTH OF SAID INTERMEDIATE BAR, SAID FIRST AND SECOND PROJECTIONS BEING LOCATED AND DIMENSIONED TO EXTEND REARWARDLY INTO SAID FIRST AND SECOND SLOTS IN SAID LOCKED POSITION SO THAT THE STRAP THREADED THROUGH SAID SLOTS IS GRIPPED BETWEEN SAID PROJECTIONS AND INTERMEDIATE BAR IN THE LOCKED POSITION OF THE LOCKING MEMBER, AND LOADING OF THE BUCKLE TENDING TO MOVE THE LOCKING MEMBER TOWARD SAID ONE END OF THE FRAME SERVES TO FURTHER URGE SAID FIRST BAR INTO SAID GROOVE.