Density control mechanism for crop baler
First Claim
1. 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:
- a bell crank having a pair of diverging legs provided with outer ends;
structure swingably connecting said crank to one of said walls between said ends;
means for operably coupling the end of one leg with the other of said walls; and
power means coupled with the other leg for rocking the crank and simultaneously displacing the same in a direction to inwardly shift said walls.
2 Assignments
0 Petitions
Accused Products
Abstract
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.
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Citations
17 Claims
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1. 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:
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a bell crank having a pair of diverging legs provided with outer ends; structure swingably connecting said crank to one of said walls between said ends; means for operably coupling the end of one leg with the other of said walls; and power means coupled with the other leg for rocking the crank and simultaneously displacing the same in a direction to inwardly shift said walls. - View Dependent Claims (2, 3, 4, 5, 6)
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7. 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:
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a pair of bell cranks each having first and second relatively diverging legs provided with outer ends; structure swingably mounting both of said cranks on said perpendicular wall adjacent opposite ones of said opposed walls, each crank being swingable about an axis located intermediate its opposite leg ends; means for operably coupling said first legs of the cranks with opposite ones of said opposed walls; and power means operably coupled with said second legs of the cranks for rocking and simultaneously displacing the cranks in directions to inwardly shift said opposed and said perpendicular walls. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification