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US 4,037,528 AGranted
Density control mechanism for crop baler
AssigneeHesston Corporation
InventorsAllen Andrew White, George Yatcilla, Harold Keith Garrison
Life of this patent
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AssigneeHesston Corporation
InventorsAllen Andrew White, George Yatcilla, Harold Keith Garrison
Estimating the term…
The discharge end of a bale chamber may be constricted or enlarged such that bales being packed rearwardly through the chamber may be increased or decreased in density by regulating their resistance to exit from the chamber. Bell cranks at the four corners of the chamber are coupled with shiftable walls of the latter in such a way that pressure increases or decreases are simultaneously experienced by all of the walls upon introduction or release of hydraulic fluid to a pair of power devices which interconnect the two cranks on each side of the chamber. The two legs of each bell crank are of equal radial length with respect to the axis of swinging movement of the crank so that equal moment arms are produced by such legs to accomplish substantially uniform pressure around the bale within the chamber.
In combination with a variable dimension bale chamber having a pair of mutually perpendicular, inwardly and outwardly shiftable walls that converge toward one corner of the chamber, mechanism for controlling said shifting of the walls including:
In combination with a variable dimension bale chamber having at least one pair of inwardly and outwardly shiftable walls that are opposed to one another, plus at least one additional inwardly and outwardly shiftable wall that is perpendicular to said opposed walls, mechanism for controlling said shifting of the walls including:
Dependencies are inferred from the claim text.