Systems and methods for harvesting and processing leafy vegetables

• US 7,712,296 B2
• Filed: 08/01/2005
• Issued: 05/11/2010
• Est. Priority Date: 07/30/2004
• Status: Active Grant

• Current Assignee: Fresh Leaf Farms, Fresh Leaf Frams
• Original Assignee: Fresh Leaf Farms
• Inventors: DeGroot, Peter, Costa, Mike
• Primary Examiner(s): FABIAN-KOVACS, ARPAD
• Application Number:
  US11/195,401
• Publication Number:
  US 20060021317A1
• Time in Patent Office: 1,744 Days
• Field of Search: 563/271, 56/145, 996/43, 995/46, 996/36, 171/61, 171/38, 171/17, 198/626.1
• US Class Current: 56/327.1
• CPC Class Codes: A01D 45/263 of lettuce

Abstract

An apparatus that moves through fields of leafy vegetables and trims harvested heads of leafy vegetables. The apparatus includes a body and a plurality of supports coupled to the body for movement relative thereto. The supports are configured for supporting pieces of leafy vegetables. The apparatus further includes a plurality of cutters coupled to the body that are arranged serially and a transport system for moving the supports past the cutters. A collector is included for collecting leaves cut from the vegetables.

Claims

1. An apparatus for harvesting and processing leafy vegetables, the apparatus comprising:

a body;

a plurality of supports coupled to the body for movement relative thereto and configured for supporting heads of leafy vegetables, wherein each support is configured to fit inside a leafy vegetable head and hold the head thereon;

plurality of cutters coupled to the body and arranged serially; and

a transport system for moving the supports past the cutters; and

a collector for collecting leaves cut from the vegetable heads.

2. An apparatus in accordance with claim 1 wherein the supports are coupled to a vacuum source and each support includes a vacuum head that creates a differential pressure for holding the heads of leafy vegetables thereon.

3. An apparatus in accordance with claim 2 further comprising blowers adjacent each cutter.

4. An apparatus in accordance with claim 1 wherein the collector is a conveyor belt that moves relative to the body.

5. An apparatus in accordance with claim 1 wherein the apparatus is a self-propelled vehicle that may be operated in the field where the leafy vegetables are harvested.

6. An apparatus in accordance with claim 1 wherein the apparatus is a trailer that may be operated in the field where the leafy vegetables are harvested.

7. An apparatus in accordance with claim 1 wherein the cutters are staggered vertically with respect to one another.

8. An apparatus in accordance with claim 7 wherein the cutters are staggered in a descending manner such that a first cutter at a first end of the apparatus is at a first height and a last cutter at a second end of the apparatus is at a second height, the second height being lower than the first height and cutters in between the first and last cutters being at a lower height than an adjacent cutter relative to the first end.

9. An apparatus in accordance with claim 8 wherein adjacent cutters are staggered vertically in a range of ¼

inch to 1¾

inches.

10. An apparatus in accordance with claim 9 wherein adjacent cutters are staggered vertically ¼

inch.

11. An apparatus in accordance with claim 1 wherein the cutters comprise rotary blades.

12. An apparatus in accordance with claim 1 wherein the cutters comprise water jets.

13. An apparatus in accordance with claim 1 wherein the cutters comprise straight blades.

14. An apparatus in accordance with claim 1 wherein the leafy vegetables are one of a group comprising red leaf lettuce, green leaf lettuce, romaine lettuce, iceberg lettuce, frieze and oriental kale.

15. A method of harvesting and processing leafy vegetables with a harvesting apparatus, the method comprising:

providing heads of leafy vegetables;

supporting the heads of leafy vegetables on supports, wherein each support is configured to fit inside a leafy vegetable head and hold the head thereon;

moving the supports past a series of cutters;

cutting the heads of leafy vegetables with the cutters to thereby remove leaves from the heads of leafy vegetables; and

collecting the leaves with a collector.

16. A method in accordance with claim 15 wherein the collector is a conveyor belt.

17. A method in accordance with claim 16 further comprising moving the conveyor belt to move the leaves to a packing station.

18. A method in accordance with claim 15 further comprising blowing cut leaves from the heads of leafy vegetables.

19. A method in accordance with claim 15 further comprising periodically spraying the heads of leafy vegetables and the leaves with a liquid comprising water.

20. A method in accordance with claim 15 further comprising moving the harvesting apparatus through a field.

21. A method in accordance with claim 20 wherein the harvesting apparatus is self-propelled.

22. A method in accordance with claim 15 wherein the harvesting apparatus is a trailer.

23. A method in accordance with claim 15 wherein the cutters are staggered vertically with respect to one another.

24. A method in accordance with claim 23 wherein the cutters are staggered in a descending manner such that a first cutter at a first end of the apparatus is at a first height and a last cutter at a second end of the apparatus is at a second height, the second height being lower than the first height and cutters in between the first and last cutters being at a lower height than an adjacent cutter relative to the first end.

25. A method in accordance with claim 24 wherein adjacent cutters are staggered vertically in a range of ¼

inch to 1¾

inches.

26. A method in accordance with claim 25 wherein adjacent cutters are staggered vertically ¼

inch.

27. A method in accordance with claim 15 wherein each support comprises a vacuum head coupled to a vacuum source and the method further comprises using suction at the vacuum heads to support the heads of leafy vegetables.

28. An apparatus for harvesting and processing leafy vegetables, the apparatus comprising:

a body;

a plurality of supports coupled to the body for movement relative thereto and configured for supporting pieces of leafy vegetables;

a plurality of cutters coupled to the body and arranged serially, wherein the cutters are staggered in a descending manner such that a first cutter at a first end of the apparatus is at a first height and a last cutter at a second end of the apparatus is at a second height, the second height being lower than the first height and cutters in between the first and last cutters being at a lower height than an adjacent cutter relative to the first end, and wherein adjacent cutters are staggered vertically with respect to one another in a range of ¼

inch to 1¾

inches; and

a transport system for moving the supports past the cutters; and

a collector for collecting leaves cut from the vegetables

29. A method of harvesting and processing leafy vegetables with a harvesting apparatus, the method comprising:

providing pieces of leafy vegetables;

supporting the pieces of leafy vegetables on supports;

moving the supports past a series of cutters, wherein the cutters are staggered in a descending manner such that a first cutter at a first end of the apparatus is at a first height and a last cutter at a second end of the apparatus is at a second height, the second height being lower than the first height and cutters in between the first and last cutters being at a lower height than an adjacent cutter relative to the first end, and wherein adjacent cutters are staggered vertically with respect to one another in a range of ¼

inch to 1¾

inches;

cutting the pieces of leafy vegetables with the cutters to thereby remove leaves from the pieces of leafy vegetables; and

collecting the leaves with a collector.

30. A method of harvesting and processing leafy vegetables with a harvesting apparatus, the method comprising:

providing heads of leafy vegetables on supports, each support configured to fit inside a leafy vegetable head and hold the head thereon;

moving the supports past a series of cutters;

cutting the heads of leafy vegetables with the cutters to thereby remove leaves from the heads of leafy vegetables; and

collecting the leaves with a collector.

31. The method of claim 30, wherein each support includes a vacuum head coupled to a vacuum source and the method further includes using suction at the vacuum heads to support the heads of leafy vegetables thereon.