An array of wheel rollers on swiveling heads (castor wheel) are used independently or as a part of a roller conveyor where it is necessary to move the load in many directions.
Deflector is a flat or angle like section placed longitudinally over the conveyor making an angle (may be adjustable or fixed) with the conveyor axis. This acts as an obstruction to the movement of the load and deflects them to one side of the conveyor axis. Manipulator consists of one pair of deflectors to bring the loads at the middle section of the conveyor axis. Deflector or manipulator is used on idle conveyors and more commonly with powered roller conveyors with chain/rope pushing facility.
Fig. 6.6.4. Unpowered roller conveyors with curved section1, turn-table 2, hinged section 3