fixed drop edge 32 of the divider 30 that results in a consistent drop point 27 of material onto the moveable spinners 34 the spinners are rotated by motors 16 from below the spinners rotate in opposite directions the spinners and motors are moveable fore and aft relative to the fixed divider 30 fig5 a and 5b are upper and lower perspective views of the present invention in a dual spinner configuration spreader generally designated 36 with one spinner 34 spinner motor 16 and the fixed divider 30 of fig4 removed the spinners and motors are mounted to a subframe 38 in this configuration the subframe 38 with mounted motors and spinners is moveable fore and aft along longitudinal shaft 40 secured to main supporting frame 42 further the subframe 38 rests on longitudinal members 44 of the main supporting frame 42 the main supporting frame 42 is mounted to the storage bin 4 and is fixed in position relative to the conveyor end 18 and divider drop edge in this configuration fore and aft movement of the subframe 38 and the associated motors and spinners is accomplished through means of a screw jack 46 or for example hydraulic cylinder 47 as shown in fig5 c placed between the main supporting frame 42 and subframe 38 in manually operated form the operator of the spreader can adjust the position of the spinners relative to the conveyor end and divider drop edge by extending or collapsing the screw jack 46 by means of.