The present invention relates generally to food products, and more particularly to an apparatus and method of dividing frozen processed meat, fish and/or seafood into portions with unique geometry.
Processed frozen food such as fish and seafood is commonly formed by feeding frozen blocks into slicing machines from a vertical or near vertical chute or chutes to a horizontal cutting blade (see
Known processed food cutting machines are designed to create industry standard cut patterns of uniform thickness, such as squares and rectangles but never anything as unique as 6 sided beveled pieces, creating variable thickness, such as “natural chicken wing” shape. Having multisided or beveled sided cut pieces such as pieces that emulate chicken wing shape is desirable as they are easily held, and have a shape that is conducive to dip-ability, crispiness of edges and tenderness of the product. The variable thickness creates a variable eating texture and moisture profile.
It is an object of the present invention to provide an improved apparatus and method of processing frozen food materials which allows for the creation of multi sided pieces of consumable processed food, such as fish or seafood and for example emulating shape of chicken wings pieces. In accordance with an aspect of the invention, there is provided an apparatus for cutting blocks of frozen processed food into irregular shapes comprising a slicer unit carrying a fixed cutting blade and at least one chute for feeding slabs/logs of said frozen processed food to said blade, said chute defining a chute path for said logs/slabs extending from a chute inlet to a chute outlet, having a central longitudinal axis extending from the center of the chute inlet to center of chute outlet. The cutting blade is positioned below the at least one chute outlet. The elongate blocks of processed food are fed into said chute inlet through the chute to the chute outlet, presented to the blade, with the blade dividing the slabs into smaller portions. The at least one chute is angled greater than 30 degrees and less than 80 degrees from the plane of the cutting blade. The at least one chute is rotated about its longitudinal axis between 0 to 180 degrees and preferably between 20 and 80 degrees from a square orientation to the plane of the blade. The slicer unit may include height adjustment attachments for raising the unit at at least 2 corners thereof. In accordance with an aspect of the invention, the height adjustment attachment is a frame with adjustable castors, raises the unit at a chute inlet side of the unit such that the blade is raised to an angle of at least 18 degrees to the horizontal. In accordance with a further aspect of the invention, the chute inlet side of the unit is raised by approximately 18 degrees position the chute approximately 45 degrees to horizontal ground. As will be discussed below, the opposite side of the unit may be raise with chute orientation altered.
In accordance with a further aspect of the invention, there is provided a method of cutting blocks of food, such as frozen processed seafood of fish, into irregular shapes comprising feeding logs of said food via at least one chute to a horizontally oriented cutting blade; said chute defining a chute path for said logs extending from a chute inlet to a chute outlet, having a central longitudinal axis extending from the center of the chute inlet to center of chute outlet; Said cutting blade positioned below the at least one chute outlet; wherein said logs of food are fed into said chute inlet through the chute to the chute outlet, to said blade, said blade sectioning the blocks into smaller pieces. In accordance with a further aspect of the invention, the at least one chute angled greater than 15 degrees and less than 90 degrees from the plane of the cutting blade and the at least one chute axially rotated about its longitudinal axis between 180 to 0 degrees from a square orientation to the plane of the blade. The at least one chute may be angled at 32 degrees to the plane of the cutting blade. A piece of food such as frozen fish or seafood, produced by the method or apparatus described herein forms an aspect of the invention.
An example slicer which could be utilized with the herein invention is the Ross Orbital Slicer 950-04. It should be understood that any suitable slicer known in the industry could be used. Typical orbital slicers are required to be supported on a level floor per manufacturers operational specifications. The Ross specification and instruction manual stating “operational area of slicing blade must have a floor that is level and free of obstruction”.
Altering the angle of a slicer on a floor to raise the chute angle is not obvious to anyone with ordinary knowledge of food manufacturing. It is not part of the standard operating procedure for use of standard known industrial slicers. Using such machines to cut processed frozen food into 6 sided and/or beveled and/or chicken wing shapes was not an option using traditional methods. The herein invention allow production of a 6 angled frozen processed food (such as fish or seafood) shape in a commercially viable way, rather than hand cutting.
Traditional fish sticks and rectangular fish burgers are cut using vertical chutes to create uniform thickness portions from processed food slabs (also referred to as logs). The present invention relates to a method and apparatus for making a frozen process food product, preferably fish and seafood that has non uniform thickness and produces non rectangular shapes from standard rectangular slabs or logs, such as a 6 sided shape. An example of such shape is the general dimensional appearance of a chicken wing in terms of non rectangular sides and angles such as are shown in
In an example embodiment of the invention, such as shown in
In prior art methods and apparatus, the arrangement of the intake chutes (12) to the orbital slicing blade is vertical (i.e. 90 degrees to a horizontal cutting blade as is seen if
In the example embodiment of the herein invention shown in the drawing, the chute or chutes (12) are arranged relative to the slicer unit (10) such that the angle of the chute or chutes (12) to the cutting blade (14) itself (or to the cutting blade plane (17)) (e.g. the first angle of the chute (12)) is preferably 32 degrees. It is understood that this angle may range from between 15 to 90 degrees if desired. It was observed that arranging the chute (12) relative to the slicer unit (10) such that the chute (12) is disposed at a first angle relative to the cutting blade (14) of, preferably, 32 degrees in combination with a second angle, wherein the second angle is an angle of rotation of the chute (12) about the longitudinal axis (20) of the chute (12) of 22 degrees, such that the reference edge defined by a cross-section of the chute (12), as taken along a plane that is transverse to the central longitudinal axis of the chute, is disposed at an angle relative to the cutting blade (14) (or cutting blade plane (17)), was found to provide the dimensional shape specifications to emulate chicken wings in the finished cut pieces. As shown in
Utilizing the apparatus of the present invention, allows for creation from processed frozen fish or seafood a product that looks like and emulates the crisp texture and tenderness of like chicken wings—without the bones. From an example method and apparatus as will be discussed herein, a 6 sided, beveled shaped piece is formed that emulate the chicken wing appearance or other irregular non rectangular shapes. It should be understood that although frozen fish and seafood are specifically described, other blocks of frozen processed food or food that is not frozen and/or processed may be utilized with this machine, such as for example beef, pork, chicken, vegetables or other foods not specifically listed herein.
Block processed frozen fish, the raw material that is used to produce fish sticks and fish rectangle burgers is an example of the food to be used with the herein invention. An example apparatus for cutting blocks of frozen processed food into irregular shapes is shown in the figures, and in particular
It should be understood that although an array of 6 chutes (12) are present in the example apparatus any suitable orientation or amount of such chutes ranging from 1 to 8 or more could be utilized provided that they can be fit within the zone to feed to the machines fixed blade.
As mentioned above, each rectangular chute is rotated around its central longitudinal axis (20) between an angle greater than 0 degrees and less than 180 degrees from the square orientation as described above. As described above, square is defined as a position of the chute (12) such that a reference plane of the chute (12), i.e. a plane that extends through at least one edge defined by the chute outlet (18) (or a reference edge defined by a cross-section of the chute (12) as taken along a plane that extends transverse to the central longitudinal axis (20)) is parallel to the plane of cutting blade, such as would be observed in prior art machines, for example, the prior art machine of
As can be seen in
In an example of the invention, the angle of the chutes (12) to the horizontal plane of the floor surface (19) is at least 45 degrees. The angle of the rotating blade (14) to the horizontal plane of the floor surface (19) is 13 degrees.
As illustrated in the drawings,
Surface A is a planar surface that has a parallelogram shape on an x-y plane. Surface B is a planar surface that has a parallelogram shape on an x-y plane. Dimension L1 is a distance on the x-y plane that defines two of the four edges of the parallelogram that defines each of Surface A and Surface B of the product shape. Dimension L2 is a distance on the x-y plane that defines the two other of the four edges of the parallelogram that defines each of Surface A and Surface B of the product shape. Dimension α (alpha) is an angle that defines the acute angle of each of parallelograms A & B. Dimension T is a distance in the z direction between the two product surfaces A and B. Surface B is located on a plane parallel to surface A. Surface B is of identical description to surface A.
A central plane is an imaginary surface necessary to define relative portions of each of surfaces A and B. The central plane intersects each one of surfaces A and B, independently, at the two opposite corners of these surfaces that are furthest apart. Both surface A and surface B each, independently, have unique central planes and these planes are perpendicular with the x-y plane.
Dimension B (beta) is an angle that defines the relationship of any identical coordinates x,y within surfaces A and B as a function of dimension T. This angle is relative to the x-axis on the x-z plane and when combined with Dimensions T defines the offset of the two parallelograms A and B in the x coordinate direction.
Dimension (gamma) is an angle that defines the relationship of any identical coordinates x.y within surfaces A and B as a function of T. This angle is relative to the y-axis on the x-y plane and when combined with dimension T, defines the offset of the two parallelograms in the y coordinate direction.
Dimension L3 is the distance that is dependent on variables L1, L2, T, B, and gamma.
The ratios, L1/L2, L1/L3, L2/L3 are important marketing values and create the unique appearance and eating experience. This is a level of geometric orientation not seen before in block cut food. The shape enhances the dining experience by presenting variable different types of texture and taste experience. The end tips are more crispy and crunchy, and somewhat drier than the middle of the product. The middle tends to be juicer and provide a more sumptuous eating experience.
The following sets out an example of a step by step method of how the frozen fish block is cut:
19″×10″×2.5″ frozen Fish blocks are processed as follows:
10″ dimension cut into longitudinal quarters, 10/4, creating 19″×2.5″×2.5″ logs
2.5″ dimension is cut into longitudinal quarters again 2.5/4, creating 19″×2.5″×0.625″ slabs
2.5 dimension is cut in longitudinal half again 2.5/2, creating 19″×1.25″×0.625″ rods
These rods/logs (32) are fed into the feed chute landing sections (34) at the chute inlet (16). These logs (32) must be sized to fit for easy sliding fit through the chutes, but cannot be too small in cross section or they will rotate or spin as the blade cuts through it resulting in torn or uneven slices. In a preferred embodiment of the invention 4 logs of 19″×1.25″×0.625″ are placed together in a chute (12) to create the desired size of food pieces. The blade cut location can be adjusted to adjust piece size as per known methods for cutting blades and orbital cutting blades.
In a preferred embodiment of the invention, conveyors take cut pieces from below the slicer for further processing.
In a preferred embodiment, the rectangular rods (32) (now cut to a length of 19″×1.25″×0.625″) drop into 6 chutes (12) at a 32 degree to the orbital blade (14). Each chute has a longitudinal axis (20) extending from its chute inlet opening (16) to chute outlet (18). From one of its sides (or edges) of the chute outlet opening (18) being square to the cutting plane (17) of the cutting blade (14) (i.e. a plane extending through the at least one edge of the chute outlet opening (18) being parallel to the cutting plane (17) of the cutting blade (14)), the rectangular chute (12) is rotated between 20 to 80 degrees about its longitudinal axis (20). Rotation outside of this range may also be utilized between an angle greater than 0 degrees to an angle less than 180 degrees. In the subject example embodiment, each chute (12) is rectangular and matches the size and shape of the log or a plurality of rectangular logs (for example 4 said logs having a cross section of 2.5″×1.3″) for a sliding fit between the plurality of rectangular logs and the interior passage defined by the chute (12).
As referred to above, in some embodiments, at the side of the apparatus (1) on which the chute inlets (16) are arranged which may vary between side (28) as shown in
In an example embodiment, the logs are cut into approximately 10 sections with a compound angle to create the final shape and weight, typically 14 to 19 grams. The resultant pieces are formed with 6 sides.
It is the angle in the rotation of chute (12) about its own axis in combination with the angle of chute to the plane (17) of the cutting blade (14) (wherein the cutting blade (14) is arranged between horizontal (or parallel to the floor (19)) to 13 degrees relative to the floor (19)), that creates the complex shape of cut pieces (40).
As seen in
The present invention is novel and non-obvious over what others skilled in the art have done because the present method is not part of the standard operating procedure for using standard slicing machines. Cutting fish into chicken wing shapes of non uniform thickness was not an option using traditional methods.
While this invention has been described in conjunction with the specific embodiments outlined above, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. Accordingly, the preferred embodiments of the invention as set forth above are intended to be illustrative, not limiting. Various changes may be made without departing from the spirit and scope of the invention. It should be further understood that the figures may illustrate components of the invention and angles relating to said components in schematic form and may not be an accurate reflection of the dimensions and angles described in the specification. Any discrepancy between dimensions and angles shown in the figures and described in the specification shall be resolved in favour of that described in the specification.
This application claims the benefits of priority to U.S. Provisional Patent Application No. 62/949,132, filed Dec. 17, 2019, titled METHOD FOR CUTTING FROZEN FISH, the contents of which are hereby expressly incorporated into the present application by reference in their entirety.
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