Regularizing device for the depth of a furrow
First Claim
1. In a seed planter having a planter unit frame means adapted to be attached to a tool bar, furrow-opening means mounted fixed and immovable relative to said frame means during movement of said frame means in the performance of a seed planting operation, a pair of gauge wheels one each on opposite sides of said furrow opening means rotatably mounted on the lower ends of support arms which are pivotably mounted on said frame means, seed dispensing means mounted on said frame means, the improvement which comprises equalizer arm means operatively interconnecting said gauge wheel support arms for causing approximately equal and opposite rotation of said support arms to reduce the vertical displacement of said planter unit frame means and said furrow opening means relative to the displacement of said gauge wheels as the gauge wheels individually encounter irregularities and obstacles in their path of travel.
4 Assignments
0 Petitions
Accused Products
Abstract
The device is mounted on a seeder provided with a hopper, with a seed distributor and with a plowshare or work disk. It comprises two lateral gauge wheels mounted on two bearings borne by two arms pivotably articulated around an axis on the chassis of the seeder. A class 1 lever formed from a rod is extended by two sliding sleeves articulated respectively at its middle around a ball-joint adjustable in position with respect to the chassis and at its two ends around the two other ball-joints fastened to the oscillating support arms. The device is useful in agricultural machines having a plowshare or work disk.
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Citations
18 Claims
- 1. In a seed planter having a planter unit frame means adapted to be attached to a tool bar, furrow-opening means mounted fixed and immovable relative to said frame means during movement of said frame means in the performance of a seed planting operation, a pair of gauge wheels one each on opposite sides of said furrow opening means rotatably mounted on the lower ends of support arms which are pivotably mounted on said frame means, seed dispensing means mounted on said frame means, the improvement which comprises equalizer arm means operatively interconnecting said gauge wheel support arms for causing approximately equal and opposite rotation of said support arms to reduce the vertical displacement of said planter unit frame means and said furrow opening means relative to the displacement of said gauge wheels as the gauge wheels individually encounter irregularities and obstacles in their path of travel.
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7. In a seed planter having a planter unit frame means adapted to be attached to a tool bar, furrow-opening means mounted fixed and immovable relative to said frame means during movement of said frame means in the performance of a seed planting operation, a pair of gauge wheels one each on opposite sides of said furrow opening means rotatably mounted on the lower ends of support arms which are pivotally mounted on said frame means, seed dispensing means mounted on said frame means, the improvement which comprises, equalizer arm means for operatively interconnecting said gauge wheel support arms for causing approximately equal and opposite rotation of said support arms to reduce the vertical displacement of said planter unit frame means and said furrow opening means relative to the displacement of said gauge wheels as the gauge wheels individually encounter irregularities and obstacles in their path of travel, said equalizer arm means extending between said support arms and generally transversely to the fore-and-aft longitudinal axis of said planter and being pivotally mounted intermediate opposite ends thereof for tilting in a generally transverse plane.
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8. In a seed planter having a planter unit frame means adapted to be attached to a tool bar, furrow-opening means mounted fixed and immovable relative to said frame means for forming a furrow of desired predetermined depth as said frame means moves along the ground at a predetermined distance above ground surface, a pair of support arms, said furrow-opening means being positioned between said support arms, means for independently and freely pivoting said support arms to said frame means, a gauge wheel rotatably mounted on a lower end of each of said support arms and adapted to contact the ground surface in straddling relation to said furrow-opening means, equalizer arm means operatively interconnecting said support arms for constraining them to move in relatively opposite and equal angular directions relative to said frame means about their respective independent axes of pivoting and thereby support said frame means and maintain said furrow-opening means relative to the displacement at said predetermined depth when said gauge wheels are on level ground to reduce the vertical displacement of said planter unit frame means and said furrow-opening means relative to the displacement of said gauge wheels thus proportionally distributing any variations in the ground surface between both gauge wheels to thereby proportionally reduce any deviation in ground surface variations upon said furrow-opening means and the predetermined depth created thereby.
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9. In a seed planter having a planter unit frame means adapted to be attached to a tool bar, furrow-opening means mounted on said frame means comprising at least one rotatable disc, said one rotatable disc having an axis of rotation which is fixed relative to said frame means during a seed planting operation, a pair of gauge wheels one each on opposite sides of said one rotatable disc rotatably mounted on the lower ends of support arms which are pivotally mounted on said frame means, seed dispensing means mounted on said frame means and including a seed chute extending downwardly adjacent said at least one rotatable disc, the improvement which comprises equalizer arm means operatively interconnecting said gauge wheel support arms for causing approximately equal and opposite rotation of said support arms to reduce the vertical displacement of said planter unit frame means and said one rotatable disc relative to the displacement of said gauge wheels as the gauge wheels individually encounter irregularities and obstacles in their path of travel, said equalizer arm means extending between said support arms and generally transverse to the fore-and-aft longitudinal axis of said planter and being pivotally mounted intermediate opposite ends thereof for tilting in a generally transverse plane.
- 10. In a seed planter having a planter unit frame means adapted to be attached to a tool bar, furrow opening means mounted on said frame means comprising at least one rotatable disc, said one rotatable disc having an axis of rotation which is fixed relative to said frame means during a seed planting operation, a pair of gauge wheel one each on opposite sides of said one rotatable disc rotatably mounted on the lower ends of support arms which are pivotally mounted on said frame means, seed dispensing means mounted on said frame means and including a seed chute extending downwardly adjacent said at least one rotatable disc, the improvement which comprises equalizer arm means operatively interconnecting said gauge wheel support arms for causing approximately equal and opposite rotation of said support arms to reduce the vertical displacement of said planter unit frame means and said one rotatable disc relative to the displacement of said gauge wheels as the gauge wheels individually encounter irregularities or obstacles in the path of travel, said equalizer arm means extending between said support arms and generally transversely to the fore and aft longitudinal axis of said planter and being pivotally mounted intermediate opposite ends thereof.
Specification