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Claim 1

A COMPRESSION SLIDER COMPRISING A SLIDER BODY DEFINED BY NORMALLY WIDELY SPACED WALLS JOINED AND SPACED BY A WEB, ONE WALL ONLY OF THE SLIDER HAVING FLANGED SIDES FOR GUIDANCE OF SCOOPS OF A STRINGER INTO AND OUT OF A CHANNEL OF THE SLIDER BODY, SAID FLANGED WALL HAVING SPACED RAISED PLATFORMS, A FLAT PLATE FIXED TO AND JOINING SAID PLATFORMS, A SPRING LOCK FIXED TO ONE OF THE PLATFORMS BETWEEN SAID PLATE AND ONE OF SAID PLATFORMS, SAID SPRING LOCK HAVING LOCK MEANS OPERATING IN AN APERTURE IN SAID FLANGED WALL OF THE SLIDER BODY AND NORMALLY EXTENDING INTO THE CHANNEL OF SAID BODY, A PULL HAVING A PIVOT END ARRANGED BETWEEN SAID FLANGED WALL AD SAID SPRING LOCK AND OPERATIVELY ENGAGING THE SPRING LOCK TO MOVE SAID LOCK MEANS INTO INOPERATIVE POSITION WITH RESPECT TO THE CHANNEL OF THE SLIDER BODY, PROJECTING MEANS WITH A BEVELLED SURFACE ON AND INTEGRAL WITH SAID FLANGED WALL ENGAGED BY THE PIVOT OF THE PULL IN CHECKING MOVEMENT OF THE PULL IN ONE DIRECTION ON THE SLIDER BODY, A SHOULDER ON ONE OF SAID PLATFORMS FOR CHECKING MOVEMENT OF THE PULL IN THE OPPOSITE DIRECTION, AND THE OTHER UNFLANGED WALL OF THE SLIDER BODY ADAPTED TO BEING MOVED BY COMPRESSION IN THE DIRECTION OF THE FLANGED WALL IN MOUNTING AND RETAINING THE SLIDER ON COUPLED SCOOPS OF A PAIR OF STRINGERS.