sized 14 feeds out of the hopper 16 at the lower end 20 thereof into the vibrating screen body 22 the vibrating screen body 22 has a frame 24 shown in detail in fig3 that is covered by a shroud 26 the shroud 26 is held in position by ratcheted tie downs 28 on the side walls 30 inside of the vibrating screen body 22 is located a vibrating screen 32 that is typically made from a wire cloth the vibrating screen 32 is tensioned between the respective side walls 30 by means of a tension rail 34 the angle of repose of the vibrating screen body 22 is great enough so the material be sized 14 will flow there along by gravity the vibrating screen body 22 may be pivoted on pivot point 36 by means of hydraulic ram 38 by extending the hydraulic ram 38 the angle of repose can be increased the slot 46 along with the pivot bar 48 allow for adjustment of the angle of repose between the hopper 16 and the vibrating screen body 22 as the material to be sized 14 feeds through the vibrating screen body 22 the larger particles 40 that will not go through the vibrating screen 32 and come out the discharge end 42 the sized particles 44 that are smaller than the spaces in the vibrating screen 32 come out of the bottom of the vibrating screen body 22 referring now to fig2 of the drawings an enlarged partial sectional view of the vibrating screen body 22 is shown a portion of the shroud 26 has been cut away to illustrate the screen 32 being stretched between the sides 30 by means of tension rail 34 being.