(i) Stops: These placed the end of the conveyor to physically stop the moving loads are at from falling off the conveyor end. Disappearing stops may be placed at desired inte ate points in the path of roller to stop the moving articles at such points, if a conveyor required. The stops are simple flat steel plates fixed on rigid legs or fixed to conveyor structure. Disappearing stops may be moved up or down from the top level of the roller by suitable mechanism.