other for improved harvesting efficiency are provided application_number US 60124790 A description referring to fig1 a first belt 10 advances in the direction of arrow f around a first inlet end roller 11 and a first discharge end roller 12 so that there is an endless loop of the belt 10 with an outwardly directed face 13 and an inwardly directed face 14 in the same way a second endless belt 20 advances in the direction of arrow g around a second inlet end roller 21 and a second discharge end roller 22 the belt having an outwardly directed face 23 and an inwardly directed face 24 in accordance with conventional conveyor belt technology for keeping the belt central on the rollers the rollers are crowned that is with slightly larger diameter mid way along their length than at the ends of the rollers between the inward faces 14 and 24 is a lifting channel 25 material at the inlet end 26 of the apparatus is drawn as shown by arrow l into the nip 27 and carried up the lifting channel 25 by the advancing movement arrow j of the belts 10 and 20 to be discharged ultimately at the discharge end 28 of the lifting.