Beater grate attachment for threshing and separating mechanism

Claim 1

IN THRESHING AND SEPARATING APPARATUS INCLUDING A BODY HAVING SPACED APART SIDE WALLS JOURNALING A THRESHING CYLINDER ON A TRANSVERSE AXIS FOR ROTATION OVER A NORMALLY FIXEDLY POSITIONED CONCAVE SUPPORTED AT ITS FRONT AND REAR ENDS FOR SELECTIVE ADJUSTMENT TOWARD AND AWAY FROM THE CYLINDER AND A ROTATABLE BEATER JOURNALED BY THE WALLS REARWARDLY AND UPWEARDLY OF AND PARALLEL TO THE CYLINDER, THE IMPROVEMENT COMPRISING A BEATER GRATE DISPOSED BENEATH THE BEATER AND HAVING FRONT AND REAR ENDS, OPPOSITE FORE-AND-AFT SIDES AND A PLURALITY OF TRANSVERSE BAFFLES SPACED APART FORE AND AFT TO PROVIDE A PLURALITY OF GRAIN DISCHARGE OPENINGS, SAID GRATE BEING OF RIGID CONSTRUCTION BOTH FORE AND AFT AND TRANSVERSELY AND HAVINT ITS FRONT END CLOSELY ADJACENT TO THE REAR END OF THE CONCAVE, SAID BAFFLES LYING IN A RELATIVELY FLAT S-CURVE INCLUDING A REARWARD ARCUATE PORTION BENEATH AND GENERALLY CONCENTRIC TO THE BEATER AND A FORWARD PORTION CURVING FORWARDLY AND THEN DOWNWARDLY IN CLOSE PROXIMITY TO THE LOWER REARWARD PORTION OF THE CYLINDER AND IN SUBSTANTIALLY TANGENTIAL RELATIONSHIP TO THE REAR END OF THE CONCAVE; AND FRONT AND REAR MOUNTING MEANS CONNECTING THE FRONT AND REAR ENDS OF THE GRATE RESPECTIVELY TO THE REAR END OF THE CONCAVE AND TO THE BODY WALLS FOR NORMALLY FIXING THE POSITION OF THE GRATE AS AN UPWARD AND REARWARD OPERATIONALLY RIGID EXTENSION OF THE CONCAVE, SAID FRONT MOUNTING MEANS INCLUDING A JOINT PROVIDING A TRANSVERSE PIVOT IN CLOSE PROXIMITY TO THE AFORESAID TANGENTIAL RELATIONSHIP AND NORMALLY FIXING THE POSITION OF THE GRATE BUT ENABLING RELATIVE ROCKING OF THE GRATE AND CONCAVE WHEN THE CONCAVE IS ADJUSTED AND SAID REAR MOUNTING MEANS INCLUDING MECHANISM NORMALLY EFFECTIVE TO FIX THE POSITION OF THE GRATE BUT OPERATIVE, WHEN THE CONCAVE IS ADJUSTED TO ENABLE BOTH FORE-AND-AFT AND UP-AND-DOWN SHIFTING OF THE GRATE.