ROW PLANTER WITH ADJUSTABLE GAUGE WHEELS

Abstract

Adjustable gauge wheels are provided on a row unit planter adjacent the opening disc. The wheels are adjustable laterally for proper spacing adjacent the discs. The camber of the gauge wheels relative to discs is also adjustable. The lateral adjustment is accomplished via a wear bushing and pivot bushing extending into the wear bushing for each gauge wheel. A grease zerk is provided on the end of each pivot bushing to supply grease to the inside of the adjustment wear bushing. The camber adjustment is accomplished via a slot in the row planter frame and bolts extending into arms on a pivotal member.

Claims

1. A row planter, comprising: a frame, a pair of discs on the frame to form a furrow in the ground; a pair of gauge wheels adjustably mounted on the frame; each gauge wheel including an adjustment bushing and a pivot bushing so as to be laterally adjustable relative to the discs; and a lock nut on the adjustment bushing to maintain the gauge wheels in an adjusted position.

2. The row planter of claim 1 wherein the gauge wheels have an adjustable camber relative to the discs.

3. The row planter of claim 1 wherein the pivot bushing rotates within the pivot bushing.

4. The row planter of claim 1 further comprising a shaft having opposite ends to receive the adjustment bushings of the gauge wheels.

5. The row planter of claim 3 wherein the ends of the shaft define offset axes such that the gauge wheels' angle inwardly from top to bottom.

6. The row planter of claim 3 wherein the pivot bushing extends into the adjustment bushing.

7. The row planter of claim 1 further comprising a slot in the frame and a pair of bolts extending through the slot to permit camber adjustment of the gauge wheels.

8. The row planter of claim 7 further comprising a collar pivotal about a horizontal axis and having an arm bolted to the frame via the slot.

9. The row planter of claim 7 wherein the collar resides between the gauge wheels.

10. A row planter comprising: a frame, a pair of discs on the frame to form a furrow in the ground; a pair of gauge wheels adjustably mounted on the frame; and each gauge wheel having an adjustable camber.

11. The row planter of claim 10 wherein the gauge wheels are laterally adjustable relative to the discs.

12. The row planter of claim 10 further comprising a slot in the frame and a pair of bolts extending through the slot to permit the camber adjustment of the gauge wheels.

13. The row planter of claim 12 further comprising a collar pivotal about a horizontal axis and having an arm bolted to the frame via the slot.

14. The row planter of claim 12 wherein the collar resides between the gauge wheels.

15. The row planter of claim 10 wherein each of the gauge wheels includes an adjustment bushing to allow lateral adjustment of the wheels.

16. The row planter of claim 15 wherein each gauge wheel includes a pivot bushing extending into the adjustment bushing.

17. The row planter of claim 16 wherein each pivot bushing includes a grease zerk.

18. The row planter of claim 15 wherein each pivot bushing is threadably coupled to a center shaft.

19. The row planter of claim 15 wherein each pivot bushing pivots about a non-horizontal axis.

20. The row planter of claim 6 wherein the camber of the gauge wheels is adjusted in unison.

Description

DESCRIPTION OF THE DRAWINGS

[0015] FIG. 1 is a perspective view of a row planter unit with disc openers, gauge wheels, and closing wheels.

[0016] FIG. 2 is a top plan view of the row planter unit shown in FIG. 1.

[0017] FIG. 3 is another perspective view of the row planter unit shown in FIG. 1.

[0018] FIG. 4 is an enlarged upper perspective view of the row planter unit shown in FIG. 1.

[0019] FIG. 5 is a partially exploded perspective view of the row planter unit shown in FIG. 1.

[0020] FIG. 6 is an enlarged plan view showing the means for lateral adjustment and camber adjustment of the gauge wheels of the row planter unit.

[0021] FIG. 7 is a perspective view of the gauge wheel mounting shaft.

[0022] FIG. 8 is a front elevation view of the mounting shaft.

[0023] FIG. 9 is a top plan view of the mounting shaft.

[0024] FIG. 10 is an end elevation view from one end of the mounting shaft.

[0025] FIG. 11 is a front elevation view showing the gauge wheels in proper position relative to the disc openers.

[0026] FIG. 12 is a front elevation view showing the position of the gauge wheels after bushing wear, with a gap between the gauge wheels and the opener discs.

[0027] FIG. 13 is another front elevation view showing correctly adjusted gauge wheels parallel to the disc openers.

DETAILED DESCRIPTION OF THE INVENTION

[0028] A row planter unit having the adjustable gauge wheels of the present invention is generally designated in the drawings by the reference numeral 10. The unit 10 includes a frame 12, a pair of disc openers (or opening discs) 14, a pair of gauge wheels 16, and a pair of closing wheels 18. The discs 14 and closing wheels 18 are conventional, and do not form a part of the present invention.

[0029] Applicant's invention is directed towards the gauge wheels 16, and more specifically, to the ability to adjust the camber and the lateral position of the gauge wheels 16.

[0030] As best seen in the partial exploded view of FIG. 5, each gauge wheel 16 is mounted on a lower end of an arm 20 via a bolt 22 which defines the rolling axis for the wheel. The upper end of the arm 20 is adjustably coupled to the frame 12 by a bushing assembly. More particularly, the upper end of the arm 20 has an internally threaded collar 24 which threadably receives a lateral adjustment bushing 26. The bushing 26 has external threads to threadably mate with the internal threads on the collar 24 of the arm 20. A lock nut 28 on the bushing 26 fixes the threaded position of the bushing 26 in the collar 24 of the arm 20, thereby allowing the lateral position of the gauge wheel 16 to be adjusted relative to the opening disc 14.

[0031] A pivot bushing 30 extends through the adjustment bushing 26 and has an inner end which is threadably received within a mounting shaft 32. The pivot bushing 30 allows the adjustment bushing 26, the fixed arm 20 and the gauge wheel 16 to pivot about the axis of the bushing 30 as the row unit travels through the field. Preferably, the bushing 30 is hollow, with an end grease zerk 31, which allows the inside of the bushing 26 to be greased, thereby minimizing wear between the bushings 26 and 30.

[0032] The opposite gauge wheel is similarly mounted to the opposite end of the mounting shaft 32 via a mirror image arm 20, adjustment bushing 26, and pivot bushing 30.

[0033] As seen in FIG. 8, the shaft 32 has internally threaded bores 34 on each end which are angularly disposed with respect to each other. The bores 34 receive the threaded ends 33 of the pivot bushing 30. While FIG. 8 shows the angular orientation of the bores 34 to be 6 degrees relative to horizontal, it is understood that this angle can be increased or decreased without departing from the scope of the present invention.

[0034] As seen in FIG. 6, the frame 12 includes a pair of spaced apart, longitudinally extending inner plates 38 and outer plates 39. A tubular member 40 resides between the plates 38. The mounting shaft 32 extends through the tubular member 40, and is affixed thereto by a roll pin 42. The tubular member 40 has a pair of arms 44 welded thereto and extending rearwardly between the plates 38. A pair of bolts 46 extend through aligned slots 48, 49 in the inner and outer plates 38, 39 and are threadably received in the arms 44 of the tubular member 40. When the bolts 46 are loosened, the tubular member 40 can be rotated about its axis, thereby adjusting the camber of the gauge wheels 16. The bolts 46 are tightened to maintain the selected camber position of the gauge wheels 16.

[0035] FIG. 13 shows the gauge wheels 16 properly adjusted so as to be parallel to and closely spaced to, or lightly engaging the opening discs 14. In comparison, FIGS. 11 and 12 show the gauge wheels on worn bushings before any adjustments, with gaps 50 between the gauge wheels 16 and the discs 14. The gaps 50 cause mis-formed or deterioration of the seed furrow, and thus reduced yield. Dirt and trash can also accumulate in the gaps 50. The properly adjusted gauge wheels 16, as shown in FIG. 13, maintain proper furrow creation, for proper seed placement and enhanced yield, and eliminate or minimize buildup of dirt and trash.

[0036] The invention has been shown and described above with the preferred embodiments, and it is understood that many modifications, substitutions, and additions may be made which are within the intended spirit and scope of the invention. From the foregoing, it can be seen that the present invention accomplishes at least all of its stated objectives.