side frames 72 and 74 run the entire length of the power conveyor assemblies and are unique in structure and function as will be revealed in greater detail later herein at the left side of fig2 is the end of the powered conveyor assembly shown thereat such as feed end 22 of powered conveyor assembly 24 in particular drive motor 30 is shown affixed to a drive roller assembly 76 which spans between and is retained by side frames 72 and 74 also spanning between side frames 72 and 74 a conveyor belt return roller assembly 78 and a wear bar assembly 80 and upon which belt 68 rests as it travels on the return end is a conveyor belt return roller assembly 82 and an end return roller assembly 84 about which belt 68 wraps in the side view shown in fig3 side frame 74 is seen along with drive roller assembly 76 return roller assembly 84 belt return rollers 78 and 82 and wear bar assembly 80 in fig4 drive roller assembly 76 is connected to drive motor 30 and spanning between side frames 72 and 76 side frames 72 and 74 are seen to include a lower section carrying a number of vertically oriented slots and an inwardly extending flange having a series of slots see fig2 thus various.