Patent ID: 6958012
Filing Date: 2005-10-25
Classification: A01F

Abstract:
1. concave arrangement for a threshing machine, the arrangement comprising a first stage having a concave associated with a rotary member, said concave having a hinged portion that is positioned in an exit region of said concave and is pivotally moveable between a first position and a second position so as to vary in se the distance between said hinged portion and said rotary member, said concave arrangement further comprising a second stage downstream of and spaced apart from said first stage and adapted to receive material processed in use in said first stage and said arrangement further including a bridging means for bridging a gap between said first and second stages, said bridging means being pivotally moveable jointly with said hinged portion such that said bridging means substantially closes said gap in and between each of at least said first and second positions of said hinged portion, wherein said hinged portion and said bridging means are connected together and jointly moveable by means of an over-centre mechanism.