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 intambo ifakiwe isiciko sivaliwe kwaye imfumba necala leverhe lityhalelwe ngasekhaya kangangoko inokuhamba ukuze ngokukha naluphi utsalo oluzayo lwentambo lwe micwe yeverhe ezotywe kakhulu kumgangatho nokumnxa intambo.