When the rope is inserted the lid is shut and clamped and the wedge-piece then pushed home as far as it will go, so that immediately any pull comes on the rope the wedge-piece is drawn hard into the block and jams the rope.
Xa ithe yafakwa intsontelo siyavalwa isiciko size sifakwe isibambi ize isuntswana leverhe lona lityhalelwe kwindawo yalo kangangoko linokukwazi, ukwenzela ukuba nakuphina ukutsalwa kwentsontelo kwiverhe kube nzima kwisiqobo ukuze ixinge intsontelo.