Patent Application
20110256819
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1. Field of the Invention
The present invention relates to bone cutting saws and in particular to a double bladed bone cutting field dressing saw for cutting the pelvic bone of a large game animal, the double blade saw comprising a handle and two bone sawing blades spaced apart which allow a larger opening to be cut in the pelvic bone with a single pass thereby allowing easier removal of the colon, bladder and guts and prevent puncturing them, and making it easier to clean the pelvic area.
2. Description of Related Art Including Information Disclosed Under 37 CFR 1.97 and 1.98
Many hunters use straight-bladed knives in the large game field dressing process. However, these knives are not configured for the types of cuts required, and require great skill on the part of the hunter to quickly and cleanly dress an animal. Furthermore, conventional knives—even hunter's knives and sportsmen's knives—have relatively long, thin blades which cannot easily cut through the bones and sinews of large game animals. Prior art bone saws are single blade saws and do not create a large enough opening through the pelvic bone to allow removal of the colon, bladder and guts without puncturing them.
U.S. Pat. No. 1,203,869, issued Nov. 7, 1916 to Hale, shows a corn and callous remover which comprises two thin saw blades with serrated edges parallel and flush with each other. The blades are spaced apart by interposed washes and held together using a rivet or screw.
U.S. Pat. No. 1,497,577, issued Jun. 10, 1924 to Morzsa, claims a saw having two support bars extending from its handle. An outer saw blade is located on the outer side of each of the support bars and an intermediate saw blade rests in between the two support bars.
U.S. Pat. No. 7,578,731, issued Aug. 25, 2009 to Moore, discloses a field dressing knife suitable for all aspects of field dressing small and large game. Various novel aspects of the knife include: a large butt-end of the handle and a groove near the butt-end of the handle, both to spread the normal stress over a larger surface area when striking the butt-end of the handle with a free hand for splitting pelvis and brisket bones; and a configurable handle, permitting the double-edged field dressing knife to be used in knife mode or in a hatchet mode.
U.S. Pat. No. 5,320,576, issued Jun. 14, 1994 to Sagen, shows a one-person-powered handsaw constructed precisely to sever the pelvis bone of a deer species while providing protection against puncturing the large intestine when field-dressing the animal.
U.S. Pat. No. 6,715,209, issued Apr. 6, 2004 to Taylor et al, describes a folding cutting tool which includes a handle having gripping depressions and a plurality of cutting blades. The blades are rotatably connected to the ends of the handle to allow them to be folded into the handle or extend from the handle during operation of the tool. At least one blade has at least one depression that aligns with a depression on the handle. Alternatively, the blades of the tool may fold far enough into the handle to not interfere with the depressions in the handle. The depressions allow for the user to adequately grip the handle to perform a cutting operation.
U.S. Pat. No. 7,487,565, issued Feb. 10, 2009 to Sundling et al, indicates a hunting multi-tool with a base frame having a handle and a drag bar. A first blade is coupled with the base frame and may be moved between skinning and gutting positions. A drag line depends from the drag bar and may be secured to a cleat coupled with the base frame. Second and third blades may be pivotably extended from the handle portion and covered with a handle cover when not in use.
U.S. Pat. No. 1,487,381, issued Mar. 18, 1924 to Helms, is for an adjustable grooving device which comprises a double saw.
Two U.S. Pat. Nos. 1,421,052 issued Jun. 27, 1922 and 1,228,728 issued Jun. 5, 1917 to White, provide a dado saw in which two blades are held in spaced relation from each other by clamping means.
U.S. Pat. No. 6,578,271, issued Jun. 17, 2003 to Macek, puts forth a gutting knife including a blade with two forward extensions that define a slot between them and a peripheral cutting edge defined around the sides and bottom of the slot. A first extension has a spike tip and a cutting edge along its outside. A second extension has a blunt tip or bulge which does not cut. A meander pathway along the second extension into the slot. Saw teeth into the slot on the first extension. A recess on the outside of the second extension is inclined rearwardly and includes a cutting edge. A handle is at the rear of the knife blade.
Two U.S. Pat. Nos. 4,528,751 issued Jul. 16, 1985 and 4,461,080 issued Jul. 24, 1984 to Olson, concern an eviscerating and survival tool having a shaft with a handle at one end, a claw-like hook at the other end, the hook being comprised of at least two arcuately shaped tines defining a slot, and a saw blade disposed longitudinally along the portion of the shaft near the end containing said hook. In its preferred form the shaft is in two approximately equal portions connected by pivotable fastening means to permit the two parts of the shaft to be folded against each other with means to maintain the two parts in rigid end-to-end relationship in use.
U.S. Pat. No. 5,462,479, issued Oct. 31, 1995 to Hajek, indicates a wild game dressing tool that is light in weight and small in size, comprising two handles connected by a saw blade for field dressing a deer or the like: the tool offers a quick, safe, and easy way to split an animal's pelvic bone, allowing better cleaning of the anal area and thereby resulting in more consistent, high quality meat.
Two U.S. Patent Applications, #20080313911 published Dec. 25, 2008 and #20060070502 published Apr. 6, 2006 by Phipps, illustrate a hunting knife for assisting a hunter in field dressing an animal, particularly for assistance with breaking the pelvic bone of the animal. The knife includes a handle, a single blade and an extended element. The longitudinal axis of the knife and the longitudinal axis of the extended element are disposed generally parallel and co-planar, as defined herein. A forward-receiving slot is formed between the blade and the extended element for receiving a portion of the pelvic bone of the animal. The invention includes sheaths for containing the knife of the invention. A method for using the knife of the invention includes the steps of contacting the knife to the portion of the pelvic bone desired to be broken and pulling up on the knife so as to break the bone.
What is needed is a field dressing bone cutting saw which easily cuts out a section of the pelvic bone to provide a sufficiently wide opening for the colon, bladder and guts of the game animal to be removed without puncturing them and for easier cleaning of the pelvic area.
An object of the present invention is to provide a bone cutting saw with rigidly connected parallel bone cutting blades spaced apart for a field dressing bone cutting saw which easily cuts out a section of the pelvic bone to provide a sufficiently wide opening for the colon, bladder and guts of the game animal to be removed without puncturing them and for cleaning of the pelvic area.
In brief, the present invention provides a double bladed bone cutting field dressing saw for cutting the pelvic bone of a large game animal. The double blade saw comprises a handle and two bone sawing blades spaced apart which allow a larger opening to be cut in the pelvic bone with a single pass thereby allowing easier removal of the colon, bladder and guts and prevent puncturing them and providing easier cleaning of the pelvic area.
A rigidly connected handle with a hand protector is attached to the double bone sawing blades in one embodiment. Another embodiment provides a handle with a blade storing opening pivotally attached to the double bone sawing blades to allow the blades to be pivoted out into alignment with the handle for use and pivoted back into the handle for storage. An optional gutting hook and hide cutting blade may also be pivotally attached.
These and other details of my invention will be described in connection with the accompanying drawings, which are furnished only by way of illustration and not in limitation of the invention, and in which drawings:
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The handle 21 and 21A is secured to the double bone sawing blades 24 and 24A so that a user grasps the handle to impart a sawing motion to the double bone sawing blades on the pelvic bone to saw away a section of the pelvic bone to provide an organ removal opening through the pelvic bone of the large game animal.
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An optional gutting hook 29 may be attached by a pivot connector 27C to the bone cutting blades 24A. The gutting hook 29 is pivoted out into perpendicular alignment with the bone cutting blades for use is slicing open the animal hide for gutting the game animal in the field in a first position, as shown in
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It is understood that the preceding description is given merely by way of illustration and not in limitation of the invention and that various modifications may be made thereto without departing from the spirit of the invention as claimed.
