| CPC B07B 1/42 (2013.01) [B07B 1/28 (2013.01)] | 17 Claims |

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1. A vibratory screening apparatus comprising:
a frame;
a screen assembly affixed to said frame and having a screen with a plurality of spaced openings extending between outer edge portions of said screen, said screen assembly having a plurality of cross-members extending between sides or ends of said frame, said screen assembly having at least one screen cloth therein; and
a vibration amplifier coupled to said frame and said screen assembly, said vibration amplifier positioned directly beneath said screen assembly, said vibration amplifier adapted to exert a force against a portion of an underside of said screen assembly, said vibration amplifier comprising:
a rigid housing; and
a beater bar extending outwardly of said housing, said beater bar bearing against the underside of said screen assembly, said beater bar having a plurality of flexible strips affixed thereto.
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