fig1 - 2 illustrate a commodity cart loading conveyor apparatus 10 having a commodity cart 12 comprising a tank 14 . in the illustrated example , the cart 12 has three tanks 14 . it is understood however the cart 12 could have fewer than three tanks or more than three tanks . each tank 14 has a fill hatch 16 located at a top portion of the cart 12 . the cart 12 is typically attached to a seeding tool bar ( not illustrated ) that is operative to receive the agricultural commodities , e . g ., seed and / or fertilizer , carried in the tank 14 through a system of air ducts , and deposit the material in the soil . such carts are typically pulled either directly behind or sometimes directly ahead of such a tool bar . the cart loading conveyor apparatus 10 has an auger 18 inside a conveyor tube 20 . as known in the art , the conveyor tube 20 provides an elongate enclosure through which commodity can be conveyed from a fill hopper 22 to the fill hatch 16 . the conveyor tube 20 is mounted to the cart 12 such that the conveyor tube 20 can be moved from a transport position , shown in fig1 , to a filling position , shown in fig2 . in the transport position , the conveyor tube 20 is raised off the ground 24 . in the filling position , the conveyor tube 20 is rotated outward and downward so that fill hopper 22 sits atop the ground 24 . when the fill hopper 22 is sitting on the ground 24 , commodity can be loaded into the fill hopper 22 from a transport vehicle ( not shown ). in the transport position , the conveyor tube 20 extends generally rearward with the fill hopper 22 raised above the ground 24 . in the filling position , the upper ( discharge ) end 26 of the conveyor tube 20 is centered slightly above a fill hatch 16 . in a preferred embodiment , the upper end 26 of the conveyor tube 20 includes a chute 28 that extends generally downward into the opening defined by the fill hatch 16 . the conveyor tube 20 can be moved fore and aft to align the chute 28 with the fill hatch 16 of the tank 14 to be filled . with additional reference to fig3 and 3a , the fill hopper 22 is pivotally attached to the lower end 30 of the conveyor tube 20 . an actuator 32 is interconnected between the lower end 30 of the conveyor tube 20 and the fill hopper 22 , and is operable to pivot the fill hopper 22 away from the conveyor tube 20 , as will be described more fully below , during emptying of the fill hopper 22 . with additional reference to fig4 and 5 , a container , which in the illustrated embodiment is a pail 34 , is removably attached to the fill hopper 22 by a pair of hooks 36 , 38 . the pail 34 has a cylindrical container 40 defined by an annular wall 42 extending from a disc - shaped base 44 to an open end 46 . near the open end 46 of the cylindrical container 40 is attached a bail 48 . the bail 48 is attached to the cylindrical container 40 in a conventional manner and thus is movable between a lowered position in which the bail 48 rests against the outer surface of the annular wall 42 or a raised position in which the bail 48 is centered above the open end 46 , such as for carrying . the pail 34 can be mounted to the fill hopper 22 by hanging the bail 48 on the pair of hooks 36 , 38 . the fill hopper 22 is comprised of a bin 50 defined by a pair of sidewalls 52 , 54 , front wall 56 , and rear wall 58 . the walls are interconnected to form an inverted tetrahedron shaped cavity 60 . an auger 62 is rotatably mounted to the front wall 56 within the cavity 60 is operable to feed commodity from the bin 50 to the auger 18 in the conveyor tube 20 . it is desirable that the intake for a conveyor be screened to sieve the commodity and prevent entry into the cart 12 of lumps or foreign objects that could plug the tubes that carry the commodity . accordingly , a sieve screen or grate 64 is attached to the upper end of the bin 50 . mounted just below the sieve screen 64 is a plate 66 to which the hooks 36 , 38 are mounted . each hook has a shank 68 that extends uprightly from the plate 66 to a bend 70 that turns downward to form a catch 72 . a gape 74 is defined between the catch 72 and the shank 68 , and is sized to receive the bail 48 when the pail 34 is hung on the fill hopper 22 . the hooks extend through a respective space ( not numbered ) in the sieve screen 64 . additionally , the hooks 36 , 38 are mounted to the plate 66 so that the distance therebetween results in the pail 34 being held snuggly against the front wall 56 of the bin 50 when the pail 34 is hooked onto the fill hopper 22 , as best shown in fig5 . as further shown in fig5 , when the fill hopper 22 is in the filling position , e . g ., the sieve screen 64 parallel to the ground 24 , the pail 34 is also oriented parallel to the ground 24 . that is , the open end 46 and the base 44 of the pail 34 are perpendicular to the ground 24 . the pail 34 latches tightly onto the bin 50 which holds the relative position of the pail 34 to the fill hopper 22 when the fill hopper 22 is rotated from the filling position shown in fig5 to the upright position shown in fig6 . the fill hopper 22 is rotated relative to the conveyor tube 20 by actuator 32 , which in one embodiment is a hydraulic acutator comprised of a hydraulic cylinder 76 and a ram 78 . the ram 78 is connected to a linkage 80 that is connected to rear wall 58 . the linkage 80 includes an inner arm 82 that is connected to the ram 78 and an outer arm 84 that is connected to the rear wall 58 . the inner arm 82 is connected to the outer arm 84 by a pivot pin 86 . thus , as the ram 78 is extended , the outer arm 84 rotates downward ( clockwise in the figure ), which causes the bin 50 to be roated to a generally downward position . it will be appreicated that the conveyor tube 20 must be raised slightly to lift the fill hopper 22 off the ground 24 so that there is ample room between the fill hopper 22 and the ground 24 for the fill hopper 22 to rotate downward to vertically orient the fill hopper 22 . as also shown in fig6 , when the fill hopper 22 is rotated to the upright position , the base 44 of the pail 34 is parallel to the ground 24 and thus conveyor tube 20 can be lowered so that the pail 34 sits on the ground 24 . in this position , the open end 46 of the pail 34 is effectively below the front wall 56 ( lower wall in fig6 ) of the bin 50 , which allows residual commodity in the fill hopper 22 to flow by gravity and / or counter - rotation of auger 62 into the pail 34 . turning now to fig7 , it is contemplated that the fill hopper 22 could be rotated further , which results in the fill hopper 22 being in an over - rotated or past - upright position but the pail 34 still securely seated on the ground 24 . permitting limited over - rotation of the fill hopper 22 may improve the capture of residual commodity from the fill hopper 22 by enabling any residual commodity that is sitting against the front wall 56 of the bin 50 to be gravitationally fed into the pail 34 . after the fill hopper 22 is emptied , the conveyor tube 20 may be lowered slightly so that the otherwise snug fit between the bail 48 and the hooks 36 , 38 can be released . this allows a user to remove the bail 48 from engagement with the hooks 36 , 38 and unhook the pail 34 from the fill hopper 22 . the pail 34 can then be emptied and then hooked again to the fill hopper 22 or a new pail could be hooked to the fill hopper 22 . while the present invention has been described with respect to hooks for facilitating the temporary attachment of the pail to the fill hopper , it is understood that other types of latching structures could be used . the present invention has been described in terms of the preferred embodiment , and it is recognized that equivalents , alternatives , and modifications , aside from those expressly stated , are possible and within the scope of the appending claims .
a hopper of a commodity conveyor apparatus for use with an agricultural implement has a bin configured to hold a volume of a granular commodity . the bin is movable between a first position at which the bin can be loaded with the granular commodity and a second position at which residual granular commodity can be recovered from the bin . the hopper further has a fill opening formed in the bin and adapted for loading the granular commodity into the bin when the bin is in the first position . a discharge opening is configured to be flow - coupled to the commodity conveyor apparatus and a container is removably attached to the bin for recovering the residual granular commodity from the bin when the bin is in the second position .