Cleaning shoe screen for an agricultural combine having readily replaceable louvers
AssigneeDeere & Company
InventorJerry G. Barnett
Life of this patent
Estimating the term…
Abstract
A cleaning shoe of an agricultural combine having a chaffer screen and sieve screen which are provided with readily replaceable louvers. Both the chaffer and sieve have rectangular frames across which extend laterally arranged louvers. The louvers are held in place by a readily removable adjustment bar which is used for adjusting the opening side defined by the louvers. The adjustment bar is slidably mounted in a U-shaped member having inwardly turned lips that together with a retainer strip and a spring lock the adjustment bar into the frame thereby holding the louvers in place. By removing the retainer strip and spring, the adjustment bar can be removed and the louver replaced.
Claims16
A cleaning shoe screen for an agricultural combine for separating chaff and unthreshed tailings from grain, the cleaning shoe comprising:
- a longitudinally extending frame adapted and constructed to be mounted in an agricultural combine, the frame is provided with a plurality of receiving notches and a longitudinally mounted U-shaped member having laterally extending lips extending longitudinally along the U-shaped member;
- a plurality of adjustable louvers are laterally secured in the receiving notches of the frame, the louvers defining openings through which the grain falls into a receiving means;
- an elongated adjustment bar is removably longitudinally mounted in the U-shaped member and is used for adjusting the openings defined by the adjustable louvers, the adjustment bar when mounted to the frame forms a locking means for locking the adjustable louvers in the frame;
- and
- means cooperating with the laterally extending lips of the U-shaped member for removably mounting the adjustment bar to the frame.
An agricultural combine for harvesting a crop from a field and threshing and separating the harvested grain from the harvested straw and chaff, the combine comprising:
- a supporting structure having ground engaging means for supporting the supporting structure above the ground;
- a harvesting structure extending from the supporting structure which is used to harvest a crop from a field;
- a threshing means located on the supporting structure for threshing the harvested crop to separate the harvested grain from the harvested straw;
- separating means located on the supporting structure to separate the harvested grain from the harvested straw and chaff, the separating means comprising a cleaning shoe screen for separating chaff and unthreshed tailings from grain, the cleaning shoe screen comprising a longitudinally extending frame adapted and constructed to be mounted in an agricultural combine, the frame is provided with a plurality of receiving notches and a longitudinally mounted U-shaped member having laterally extending lips extending longitudinally along the U-shaped member, a plurality of adjustable louvers are laterally secured in the receiving notches of the frame, the louvers defining openings through which the grain falls into a receiving means, and an elongated adjustment bar is removably longitudinally mounted in the U-shaped member and is used to adjust the openings defined by the adjustable louvers, the adjustment bar when mounted to the frame forms a locking means for locking the adjustable louvers in the frame, and
- means cooperating with the laterally extending lips of the U-shaped member for removably mounting the adjustment bar to the frame.
A chaffer screen of a cleaning shoe for an agricultural combine for separating chaff from grain, the chaffer comprising:
- a longitudinally extending frame adapted and constructed to be mounted in an agricultural combine, the frame is provided with a plurality of receiving notches and a longitudinally mounted U-shaped member having laterally extending lips extending longitudinally along the U-shaped member;
- a plurality of adjustable louvers are laterally secured in the receiving notches of the frame, the louvers defining openings through which the grain falls into a receiving means;
- an elongated adjustment bar is removably longitudinally mounted in the U-shaped member and is used to adjust the openings defined by the adjustable louvers, the adjustment bar when mounted to the frame forms a locking means for locking the adjustable louvers in the frame;
- and
- means cooperating with the laterally extending lips of the U-shaped member for removably mounting the adjustment bar to the frame.
A sieve screen of a cleaning shoe for an agricultural combine for separating unthreshed tailings from grain, the sieve comprising:
- a longitudinally extending frame adapted and constructed to be mounted in an agricultural combine, the frame is provided with a plurality of receiving notches and a longitudinally mounted U-shaped member having laterally extending lips extending longitudinally along the U-shaped member;
- a plurality of adjustable louvers are laterally secured in the receiving notches of the frame, the louvers defining openings through which the grain falls into a receiving means;
- an elongated adjustment bar is removably longitudinally mounted in the U-shaped member and is used to adjust the openings defined by the adjustable louvers, the adjustment bar when mounted to the frame forms a locking means for locking the adjustable louvers in the frame;
- and
- means cooperating with the laterally extending lips of the U-shaped member for removably mounting the adjustment bar to the frame.
Dependencies are inferred from the claim text.