Patent ID: 6988624

Claim:
A vibrating screen for separating fine materials from coarse materials, comprising; a frame having a vertical tall end and a vertical short end; a screen box having an upper end, a lower end, a top screen mounted therein, and an inclination from a horizontal plane; a first pair of springs affixed to said tall end and said upper end for supporting said upper end over said tall end; a second pair of springs affixed to said short end and said lower end for supporting said lower end over said short end; an eccentric shaft affixed to said screen box and a drive means affixed to said frame and said eccentric shaft for rotating said eccentric shaft and for imparting a reciprocal movement to said screen box, and a loading pan affixed to said upper end of said screen box; said loading pan having a plated bottom surface extending substantially in a same plane as said top screen, and a central region set vertically in line with said first pair of springs.