High-speed bone-in loin slicer

• US 5,989,116 A
• Filed: 02/03/1998
• Issued: 11/23/1999
• Est. Priority Date: 02/03/1998
• Status: Expired due to Fees

• Current Assignee: Barclays Bank PLC (Barclays PLC)
• Original Assignee: Swift & Company (JBS USA Lux SA)
• Inventors: Johnson, Bruce A., Cliff, John
• Primary Examiner(s): Little, Willis
• Application Number:
  US09/018,509
• Time in Patent Office: 658 Days
• Field of Search: 452/149, 452/150, 452/155, 452/163, 83/153, 83/206, 83/222, 83/282, 83/396, 83/42
• US Class Current: 452/150
• CPC Class Codes: B26D 1/0006 Cutting members therefor
• CPC Class Codes: B26D 1/28 and rotating continuously in one direction during cutting
• CPC Class Codes: B26D 2001/002 Materials or surface treatments therefor, e.g. composite materials
• CPC Class Codes: B26D 2001/0046 rotating continuously about an axis perpendicular to the edge
• CPC Class Codes: B26D 2001/0053 having a special cutting edge section or blade section
• CPC Class Codes: B26D 2001/006 the cutting blade having a special shape, e.g. a special outline, serrations
• CPC Class Codes: B26D 2007/011 by clamping claws, e.g. in high speed slicers for food products
• CPC Class Codes: B26D 2210/02 for cutting food products, e.g. food slicers
• CPC Class Codes: B26D 5/08 Means for actuating the cutting member to effect the cut
• CPC Class Codes: B26D 5/16 Cam means
• CPC Class Codes: B26D 5/20 with interrelated action between the cutting member and work feed
• CPC Class Codes: B26D 7/0006 Means for guiding the cutter for hand knives B26B29/06; for band-knives B26D1/54
• CPC Class Codes: B26D 7/01 Means for holding or positioning work
• CPC Class Codes: B26D 7/02 with clamping means B26D7/018 takes precedence
• CPC Class Codes: B26D 7/04 providing adjustable clamping pressure
• CPC Class Codes: B26D 7/0608 by pushers B26D7/0616, B26D7/0625 and B26D7/0641 take precedence
• CPC Class Codes: Y10T 83/2187 Reciprocating product handler
• CPC Class Codes: Y10T 83/445 With work-moving clamp jaw
• CPC Class Codes: Y10T 83/4493 Tool motion initiates work feed and vice versa

Abstract

A meat slicing apparatus is disclosed, wherein the apparatus is capable of high-speed slicing of meat having large skeletal bones therein. The apparatus has a blade composed of a steel alloy that is approximately 5 to 10 times greater in compression strength than typical steel. The blade has an involute shape for withstanding the stresses incurred when slicing through bones having compression near that of steel, e.g., pork loin bones. The meat slicer includes a mechanism for securing a position of a meat section to be sliced so that the meat section stays in place during a slicing process, thereby reducing the risk of misalignment of the meat section with the blade. Thus, without such misalignments, there is a reduction in blade failures, shattered bones, bone fragments, and bone dust. Also, the securing mechanism reciprocates between securing the meat section for slicing and releasing it sufficiently for indexing toward the blade between slicing operations.

Claims

1. A food product slicer, comprising:

a slot for receiving one or more pieces of a food product to be sliced, via an opening to an interior of said slot;

a blade having a slicing edge, wherein said slicing edge iterates between a first configuration wherein said slicing edge is in a position for slicing a first of said pieces of the food product, and a second configuration wherein said slicing edge is not in a position for slicing said first piece;

a means for iteratively securing and releasing said first piece, wherein when said slicing edge is in said first configuration there is a position securing force applied to said first piece adjacent where said cutting edge slices said first piece, and wherein when said slicing edge is in said second configuration, there is a reduction in said securing force so that said first piece is capable of being moved.

2. A food product slicer, as claimed in claim 1, wherein said slicer is effective for slicing bone-in pork loins.

3. A food product slicer, as claimed in claim 1, wherein said interior has a contour generally in a shape for restricting movement of a pork loin in substantially every direction except a movement toward said blade.

4. A food product slicer, as claimed in claim 1, wherein said slot and said means for iteratively securing and releasing are effective for securing said first piece in a preferred position during slicing by said blade.

5. A food product slicer, as claimed in claim 1, wherein said slot and said means for iteratively securing and releasing contact said first piece contact said first piece about its cross section adjacent said blade for thereby inhibiting a movement for said first piece during a slicing thereof.

6. A food product slicer, as claimed in claim 1, further including a cover for said slot opening, wherein said cover is capable of being retracted from said slot opening so that said one or more pieces of the food product can be provided in said interior.

7. A food product slicer, as claimed in claim 6, further including a means for biasing said cover in a position that facilitates retaining said pieces in said interior.

8. A food product slicer, as claimed in claim 7, wherein said means for biasing includes one or more assemblies operationally connected to said cover for at least one of securing said cover over said slot opening and retracting said cover from said slot opening.

9. A food product slicer, as claimed in claim 1, wherein said interior includes has a contour that facilitates retaining said pieces in a predetermined orientation relative to said blade.

10. A food product slicer, as claimed in claim 1, wherein said blade rotates about an axis, and wherein said slicing edge extends substantially radially outwardly from said axis.

11. A food product slicer as claimed in claim 1, wherein said means for iteratively securing and releasing includes a reciprocating press for iteratively pressing against said first piece and releasing from said first piece, wherein said pressing and said releasing are synchronized with a position of said slicing edge.

12. A food product slicer, as claimed in claim 11, wherein said reciprocating press is operatively connected to a cam follower, said cam follower following a cam path having a contour that induces said press to reciprocate.

13. A food product slicer, as claimed in claim 1, further including an indexing means for incrementally urging at least said first piece of the food product toward said blade.

14. A food product slicer, as claimed in claim 13, wherein said indexing means receives input from a controller for indicating a distance that said first piece is to be moved in the direction of said blade.

15. A food product slicer, as claimed in claim 1, further including a controller for detecting at least one of:

a position of said slicing edge, and a revolution rate of said blade.

16. A food product slicer as claimed in claim 1, wherein said blade is fused with zirconium.

17. A food product slicer as claimed in claim 1, wherein approximately 40% or more of a circle'"'"'s area about a rotational axis for said blade coincides with a surface area of said blade, wherein the surface area is capable of being contacted by a blade vibration damping component, and wherein said circle has a radius extending from said rotational axis to approximately a center of mass of said blade.

18. A method for slicing a food product having a bone therein with a compressive strength in a range of approximately greater than 60,000 pounds per square inch, comprising:

providing a blade for slicing the food product and the bone;

urging the food product toward said blade so that a predetermined amount of the food product is presented to said blade for slicing;

restricting movement of the food product adjacent where slicing occurs;

wherein said step of restricting restricts movement of the food product in each angle about a center of the bone in a plane defined by a slicing of the bone by the blade, said angle being approximately 90°

; and

slicing the food product when the food product is restricted in its movement in response to an impact of said blade.

19. A method as claimed in claim 18, wherein the food product is a bone-in loin.

20. A method as claimed in claim 18, wherein said blade has an involute profile and a moment of inertia offset from a center of mass.

21. A method as claimed in claim 18, wherein said step of providing includes performing a vapor deposition for coating said blade with a material for strengthening said blade.

22. A method as claimed in claim 21, wherein said material includes zirconium.

23. A method as claimed in claim 18, wherein said step of urging includes activating a motor for urging the food product toward the blade, wherein said motor has activations synchronized with a periodicity of said blade slicing the food product.

24. A method as claimed in claim 18, wherein said step of restricting includes exerting a force against the food product, wherein said step of exerting is synchronized with a periodicity of said blade slicing the food product.

25. A method as claimed in claim 18, wherein said step of slicing includes rotating said blade during a slicing of the food product.

26. A method as claimed in claim 25, wherein said step of slicing includes accelerating said blade at a rate of angular change between slicings of the food product.

27. A method as claimed in claim 18, further including the steps of:

retracting a cover for a slot for receiving the food product; and

closing said cover about the food product when the food product is deposited within said slot.

28. A method as claimed in claim 27, wherein said step of closing is performed using one of a pneumatic device, a hydraulic device, and an electrical device.

29. A method as claimed in claim 18, wherein said step of urging includes piercing said food product with one or more projections for restricting an undesirable movement of the food product.