Broadcast spreading top dresser

• US 6,508,419 B1
• Filed: 11/09/2000
• Issued: 01/21/2003
• Est. Priority Date: 09/03/1998
• Status: Expired due to Term

• Current Assignee: Turfco Manufacturing Incorporated
• Original Assignee: Turfco Manufacturing Incorporated
• Inventors: Donner, Matthew A., Kinkead, George
• Primary Examiner(s): EVANS, ROBIN OCTAVIA
• Application Number:
  US09/711,014
• Time in Patent Office: 803 Days
• Field of Search: 239/661, 239/668, 239/672, 239/673, 239/676, 239/679, 239/680, 239/681, 239/682
• US Class Current: 239/668
• CPC Class Codes: A01C 15/122 with moving floor parts
• CPC Class Codes: A01C 17/001 Centrifugal throwing devices with a vertical axis
• CPC Class Codes: A01C 17/005 Driving mechanisms for the throwing devices
• CPC Class Codes: A01C 19/00 Arrangements for driving working parts of fertilisers or seeders A01C17/005 takes precedence
• CPC Class Codes: E01C 19/203 Centrifugal spreaders with substantially vertical axis

Abstract

A top dresser (10) includes a spinner assembly (40) removably connected by clips (44) to a cross beam (20) of the frame (12) mounting a hopper (30). The first and second sides (36) of the hopper (30) slope downwardly and inwardly to a conveyor (140) formed by sheeting (70) in the form of an endless belt having a relatively smooth outer surface. The valve (84) for the hydraulic motor (164) of the conveyor (140) is in series downstream of the valve (78) for the hydraulic motors (56) for the spinners (54) of the spinner assembly (40). Thus, it is not possible to mistakenly run the conveyor (140) without the spinners (54) operating. Therefore, the top dresser (10) is able to spread extremely minimal amounts of material evenly and without clumping or bunching.

Claims

1. Top dresser comprising, in combination:

a hopper for containing top dressing material;

a spinner assembly including at least one rotatable spinner rotatable by a hydraulic motor;

a dispensing conveyor advancing top dressing material in the hopper onto the rotatable spinner, with the dispensing conveyor being driven by a hydraulic motor;

a first control valve dividing hydraulic fluid flow between a first path and a second path, with the first path including the hydraulic motor of the spinner, with the second path bypassing the hydraulic motor of the spinner;

a second control valve, with the second path including the second valve, with the second valve dividing hydraulic fluid flow of the second path between a first subpath and a second subpath, with the first subpath including the hydraulic motor for driving the dispensing conveyor and with the second subpath bypassing the hydraulic motor for driving the dispensing conveyor, with the second control valve being in series downstream of the first control valve to insure that hydraulic fluid flow is available to the hydraulic motor of the spinner for rotating the spinner whenever hydraulic fluid flow is available to the hydraulic motor for driving the dispensing conveyor for dispensing top dressing material onto the rotating spinner for being broadcast by the rotating spinner;

a third valve providing a bypass path of the hydraulic fluid flow around the second valve requiring that the third valve be closed prior to hydraulic fluid flow being available from the first valve to the second valve and the hydraulic motor for driving the dispensing conveyor;

a fourth valve providing a bypass path of hydraulic fluid flow around the first valve requiring that the fourth valve be closed prior to hydraulic fluid flow being available to the first valve and the hydraulic motor of the spinner; and

an electrical switch movable between an off position and a first actuation position and movable between the first actuation position and a second actuation position, with the third and fourth valves being electrically actuated valves, with the fourth valve being electrically actuated in both the first and second actuating positions, with the third valve being electrically actuated only in the second actuating position.

2. The top dresser of claim 1 with the third valve being in parallel with the second control valve and the fourth valve being in parallel with the first control valve.

3. The top dresser of claim 1 wherein the hopper includes first and second, sloping closed sides, a bottom and a back, with the first and second closed sides extending outwardly at an obtuse angle outwardly relative to the bottom;

and wherein the dispensing conveyor comprises sheeting in the form of an endless belt located at the bottom of the hopper so as to have top dressing material contained in the hopper gravitationally discharged on the sheeting, with the back of the hopper including means for metering the amount of material being dispensed from the hopper by the sheeting, with the hydraulic motor for driving the dispensing conveyor comprising a hydraulic motor for advancing the sheeting relative to the hopper.

4. The top dresser of claim 1 wherein the fluid flow to the first path is less than the total hydraulic fluid flow to the first valve.

5. The top dresser of claim 2 further comprising, in combination:

a pressure relief valve for reducing hydraulic fluid flow to the first control valve under higher than desired hydraulic pressure; and

a manifold block including the pressure relief valve and the second, third, and fourth valves to minimize leakage points.

6. The top dresser of claim 1 wherein the first valve adjustably varies hydraulic fluid flow between the first and second paths;

and wherein the second valve adjustably varies hydraulic fluid flow between the first and second subpaths.

7. The top dresser of claim 1 wherein the first path includes first and second pairs of quick disconnect hydraulic fittings to allow removal of the hydraulic rotor of the spinner and to allow hydraulic fluid flow to the second valve and to the hydraulic motor for driving the dispensing conveyor.

8. The top dresser of claim 7 further comprising, in combination:

a frame including a cross beam having a rear face, a top face and a front face, with the hopper being mounted to the frame; and

means for removably mounting the spinner assembly to the frame comprising, in combination;

at least one clip secured to the spinner assembly including a front plate for abutting with the rear face of the cross beam, a top plate extending from the front plate for abutting with the top face of the cross beam, and a latching plate extending from the top plate for abutting with the front face of the cross beam, and means extending through the cross beam and the front plate for securing the clip to the cross beam.

9. Top dresser comprising, in combination:

a hopper for containing top dressing material;

a spinner assembly including at least one rotatable spinner rotatable by a hydraulic motor;

a dispensing conveyor advancing top dressing material in the hopper onto the rotatable spinner, with the dispensing conveyor being driven by a hydraulic motor;

a first path including the hydraulic motor of the spinner;

a second path;

a first control valve dividing hydraulic fluid flow between the first path and the second path;

a second control valve, with the second path including the second valve, with the second valve dividing the hydraulic fluid flow of the second path between a first subpath and a second subpath, with the first subpath including the hydraulic motor for driving the dispensing conveyor and with the second subpath bypassing the hydraulic motor for driving the dispensing conveyor, with the second control valve being in series downstream of the first control valve to insure that hydraulic fluid flow is available to the hydraulic motor of the spinner for rotating the spinner whenever hydraulic fluid flow is available to the hydraulic motor for driving the dispensing conveyor for dispensing top dressing material onto the rotating spinner for being broadcast by the rotating spinner;

a third valve providing a bypass path of the hydraulic fluid flow around the second valve requiring that the third valve be closed prior to hydraulic fluid flow being available from the first valve to the second valve and the hydraulic motor for driving the dispensing conveyor;

a fourth valve providing a bypass path of hydraulic fluid flow around the first valve requiring that the fourth valve be closed prior to hydraulic fluid flow being available to the first valve and the hydraulic motor of the spinner; and

a switch movable between an off position and a first actuation position and movable between the first actuation position and a second actuation position, with the fourth valve being actuated in both the first and second actuating positions, with the third valve being actuated only in the second actuating position.

10. The top dresser of claim 9 wherein the fluid flow in the first path bypasses the hydraulic motor for driving the dispensing conveyor.

11. The top dresser of claim 10 wherein the fluid flow to the first path is less than the total hydraulic fluid flow to the first valve.

12. The top dresser of claim 9 with the third valve being in parallel with the second control valve and the fourth valve being in parallel with the first control valve.

13. The top dresser of claim 12 further comprising, in combination:

a pressure relief valve for reducing hydraulic fluid flow to the first control valve under higher than desired hydraulic pressure; and

a manifold block including the pressure relief valve and the second, third, and fourth valves to minimize leakage points.

14. The top dresser of claim 9 wherein the first valve adjustably varies hydraulic fluid flow between the first and second paths;

and wherein the second valve adjustably varies hydraulic fluid flow between the first and second subpaths.

15. Top dresser comprising, in combination:

a hopper for containing top dressing material;

a spinner assembly including at least one rotatable spinner rotated by a hydraulic motor;

a dispensing conveyor advancing top dressing material from the hopper onto the rotatable spinner, with the dispensing conveyor being driven by a hydraulic motor; and

a switch movable between an off position and a first actuation position and movable between the first position and a second actuation position, with the first actuation position supplying hydraulic fluid flow to the hydraulic motor of the spinner and bypassing hydraulic fluid flow to the hydraulic motor of the dispensing conveyor, with the second actuation position supplying hydraulic fluid flow to the hydraulic motors of both the spinner and the dispensing conveyor, with the switch insuring that hydraulic fluid flow is available to the hydraulic motor of the spinner for rotating the spinner whenever hydraulic fluid flow is available to the hydraulic motor for driving the dispensing conveyor for dispensing top dressing material onto the rotating spinner for being broadcast by the rotating spinner.

16. The top dresser of claim 15 further comprising, in combination:

a first control valve dividing hydraulic fluid flow between a first path and a second path, with the first path including the hydraulic motor of the spinner, with the second path bypassing the hydraulic motor of the spinner; and

a second control valve dividing hydraulic fluid flow between a third path and a fourth path, with the third path including the hydraulic motor of the dispensing conveyor, with the fourth path bypassing the hydraulic motor of the dispensing conveyor, with the first control valve being actuated in the first and second actuation positions and the second control valve being actuated only in the second actuation position.

17. The top dresser of claim 16 wherein the first path includes first and second pairs of quick disconnect hydraulic fittings to allow removal of the hydraulic motor of the spinner and to allow hydraulic fluid flow to the second control valve and to the hydraulic motor for driving the dispersing conveyor.

18. The top dresser of claim 17 with hydraulic fluid flow through the first path bypassing the second control valve and the hydraulic motor for driving the dispensing conveyor.

19. The top dresser of claim 16 further comprising, in combination:

a dispense control valve dividing hydraulic fluid flow of the third path between a first subpath and a second subpath, with the first subpath including the hydraulic motor for driving the dispensing conveyor and with the second subpath bypassing the hydraulic motor for driving the dispensing conveyor.

20. The top dresser of claim 16 further comprising, in combination:

a pressure relief valve in parallel with the first and second valves for reducing hydraulic fluid flow under higher than desired hydraulic pressure; and

a manifold block including the pressure relief valve and the first and second control valves to minimize leakage points.

21. The top dresser of claim 16 further comprising, in combination:

a third control valve for dividing hydraulic fluid flow of the first path between a spinner path and a dispenser path, with the dispenser path including the third path, with the spinner path including the hydraulic motor of the spinner.

22. The top dresser of claim 21 with the spinner path bypassing the hydraulic motor of the dispensing conveyor independent of the second control valve.

23. The top dresser of claim 21 further comprising, in combination:

a dispenser control valve dividing hydraulic fluid flow of the dispenser path between a first subpath and a second subpath, with the first subpath including the hydraulic motor for driving the dispensing conveyor and with the second subpath bypassing the hydraulic motor for driving the dispensing conveyor.

24. The top dresser of claim 23 with the third control valve adjustably varying hydraulic fluid flow between the spinner path and the dispenser path, with the dispensing control valve adjustably varying hydraulic fluid flow between the first and second subpaths.

25. Top dresser comprising, in combination:

a hopper for containing top dressing material;

a spinner assembly including at least one rotatable spinner rotatable by a hydraulic motor;

a dispensing conveyor advancing top dressing material in the hopper onto the rotatable spinner, with the dispensing conveyor being driving by a hydraulic motor;

a first control valve dividing hydraulic fluid flow between a first path and a second path, with the first path including the hydraulic motor of the spinner, with the second path bypassing the hydraulic motor of the spinner;

a second control valve, with the second control valve dividing hydraulic fluid flow between a third path and a fourth path, with the third path including the hydraulic motor for driving the dispensing conveyor and with the fourth path bypassing the hydraulic motor for driving the dispensing conveyor, with the second control valve receiving hydraulic flow of the second path of the first control valve;

a third valve providing a bypass path of the hydraulic fluid flow around the second valve requiring that the third valve be closed prior to hydraulic fluid flow being available from the first valve to the second valve and the hydraulic motor for driving the dispensing conveyor;

a fourth valve providing a bypass path of hydraulic fluid flow around the first valve requiring that the fourth valve be closed prior to hydraulic fluid flow being available to the first valve and the hydraulic motor of the spinner; and

a switch movable between an off position and a first actuation position and movable between the first actuation position and a second actuation position, with the fourth valve being actuated in both the first and second actuating positions, with the third valve being actuated only in the second actuating position.

26. The top dresser of claim 25 with hydraulic fluid flow through the first path of the first control valve bypassing the second control valve and the hydraulic motor for driving the dispensing conveyor.

27. The top dresser of claim 26 with the first control valve adjustably varying hydraulic fluid flow between the first and second paths of the first control valve;

and with the second control valve adjustably varying hydraulic fluid flow between the third and fourth paths of the second control valve.