hydraulic cylinder 52 to move the bin from one field to another as stated before the crossbeam 48 is connected to the legs 44 bar 56 extends from one of the tubes to the other and by conveniently placed holes placed through the bar 56 and the crossbeam 48 the wheels can be locked in the down position by pin 58 therethrough hitch 60 on the forward end of the bin 10 provides for attachment of the bin to the power vehicle 12 to move the bin a short distance when the bin has grain therein of course the wheels are retracted and the hitch 60 detached from the power vehicle 12 in this position tumble shaft 62 is attached to the power vehicle 12 thus the power vehicle provides power to the storage bin through the tumble shaft 62 the tumble shaft is so called because it has u bolts 64 at each end permitting it to drive successfully even though the alignment may not be perfect referring to fig3 there may be seen a schematic representation of the drive the tumble shaft 62 is connected through the u bolt 64 to jack shaft 66 supported by a pair of bearings 68 within drive housing 70 main stub shaft 72 is driven by chain drive 74 main shaft 76 is located beneath the v shaped bottom 32 and is connected by u bolts 78 to the main stub shaft 72.