Trim gauge for farriers

Priority for this application is claimed from U.S. Provisional Patent application Ser. No. 60/470,266, filed on May 13, 2003, and entitled “Trim Guide for Farriers”.

The present invention relates to tools for the farrier and more particularly to a trim gauge used by farriers.

The nailed on horseshoe was first used almost simultaneously in Siberia, Byzantium, and Germany in 890 A.D. While the nailed on shoe provided a great deal of protection for the horse, it still required a great deal of work to make sure the shoe itself was properly aligned for the leg and hoof of the horse, otherwise, the horse can be damaged.

Typically a trim gauge is made of steel and is slightly curved at the lower end. In use, the trim gauge is placed along the back of the leg and runs from approximately the center line of the flexor tendons down to the heel. A loop at the top of the gauge fits around the contour of the leg and holds the mechanism in place. A straight flat piece of steel at the end of the trim gauges s placed along the width of the heel.

The trim gauge is used to determine if the hoof has been trimmed level.

Unfortunately, the positioning of the trim gauge on the leg is subject to variation, thereby generating in accurate measurement. Also, since the trim gauge is not a measuring tool, documentation of the condition of the hoof afterwards is impossible; thereby exposing the farrier to later questions on the status of the hoof.

It is clear there is a need for a trim gauge which provides accurate measurements which are documentable.

The trim guide of the present invention has a shank portion which serves as a handle and which extends from an anchor to the “T” shaped leveling bar. The shank is bent at a slight angle to form to the natural curve found in the horse's lower leg.

The anchor at one end of the “T” permits the trim guide to rest on the flexor tendons to provide a first contact point.

The bar forms the top of the “T” has sufficient length to rest from one side of the hoof to the other. In this manner, the leveling bar forms the two other points of contact with the horse (the hoof in this case).

A leveling bulb or other such device, is positioned on the trim guide so that the level of the leveling bar is easily ascertained. The position of the leveling bulb is either in the shank or in the leveling bar itself.

It has been found the horse's hoof should be trimmed so that, when the hoof is raised into the “work” position by the farrier, the two sides of the hoof should be level. The leveling bulb allos an accurate measurement of the degree of level obtained by the farrier. In some embodiments, a slight “tilt” of the leveling bar is obtained by proper adjustment of leveling bulb so that it is slightly “off plumb”.

Further, in the preferred embodiment of the invention, the top of the leveling bar is graduated so that easy measurement of the hoof is obtained. Also, in order to remind the farrier of the ideal width of the edge of the hoof, on the reverse side of the leveling bar is imprinted the ideal widths (for a horse under fourteen hands, one and half inches; over fourteen hands, one and three quarters inches; and for a draft horse, two and a quarter inches).

In this manner, using a single tool, the farrier is able to accurately gauge the condition of the hoof both before and after the shaping operation has been conducted.

The invention, together with various embodiments thereof, will be more fully explained by the accompanying drawings and the following descriptions thereof.

FIGS. 1A , 1 B, and 1 C illustrate an embodiment of the invention.

FIGS. 2A , 2 B, and 2 C, are top, side, and anchor views of the preferred embodiment of the invention.

FIGS. 3A and 3B are top and side views of an embodiment of the invention.

FIG. 4 is a side view of an embodiment of the invention in which the angle of bend for the shank is adjustable by the farrier.

FIGS. 5A and 5B are top view of an embodiment of the invention in which the overall length of the leveling bar is adjustable.

FIGS. 1A , 1 B, and 1 C, illustrates an embodiment of the invention. FIG. 1A is a side view; FIG. 1B is a top view; and FIG. 1C shows the anchor mechanism of the present invention.

Trim guide 10 has a central shaft with anchor 11 positioned at one end. The shaft bends into portion 13 . Bend 12 has an angle X, 12 A, of between 125 degrees and 165 degrees. Bend 12 permits trim guide 10 to avoid the fet lock.

At the opposing end of the trim guide 10 is the guide bar 14 which forms a “T” with shaft portion 13 . Bar 16 is graduated into inches 16 , thereby permitting the farrier to measure the width of the hoof (to obtain the properly sized horse shoe) and to measure the wall of the hoof (for recordation).

Level 15 in the shaft of the trim guide, is used by the farrier to assure that guide bar 14 is kept level during the measuring process. This assures that proper measurement is accomplished.

Anchor 11 , in this embodiment, is formed by an “X” arrangement having prongs 11 A, 11 B, 11 C, and 11 D.

FIGS. 2A , 2 B, and 2 C, are top, side and anchor views of the preferred embodiment of the invention.

As with the embodiment of FIG. 1 , trim guide 20 is bent between anchor 21 and guide bar 22 . In this embodiment, level 23 is positioned within guide bar 22 . Further, in this embodiment, hole 24 permits the trim guide 20 be easily stored by either hanging on a nail or on the belt of the farrier.

In this embodiment, anchor 21 is made up of two prongs 21 A And 21 B.

FIGS. 3A and 3B are top and side views of an embodiment of the invention.

Anchor 31 is connected to shank 30 . In this embodiment, anchor 31 is shaped as an “X” so that it easily rests on the flexor tendon of the animal. Leveling bar 32 is located at the opposing end of shank 30 forming a “T” therewith.

In this embodiment, leveling bulb 33 is affixed to shank 30 and is used in the measurement as outlined above.

In this embodiment, shank 30 is bent at angle 34 being 20 degrees.

FIG. 4 is a side view of an embodiment of the invention in which the angle of bend for the shank is adjustable by the farrier.

The shank is shown in two portions, 40 A and 40 B. Portion 40 A is secured to portion 40 B via locking nut 42 which is secured to lock ring 43 . By releasing locking nut 42 , lock ring 43 is free to rotate allowing portion 40 B to move as indicated by arrow 41 . Those of ordinary skill in the art readily recognize other mechanisms which will serve this purpose.

In this manner, the farrier is able to adjust the angle within the shank to meet differing needs or the preference of the farrier.

FIGS. 5A and 5B are top view of an embodiment of the invention in which the overall length of the leveling bar is adjustable.

Shank 50 is connected to leveling bar 51 in the “T” shape described above. In this embodiment, ends 52 A and 52 B are placed over the ends of leveling bar 51 .

In FIG. 5 a , ends 52 A and 52 B are moved inward so that the overall length created by the ends 52 A and 52 B with leveling bar 51 is M.

By moving ends 52 A and 52 B outward, the overall length 54 of the combination becomes N, which is greater than M. In this manner, the farrier is able to adjust the length of the leveling bar to meet the requirements of the specific animal.

It is clear from the foregoing that the present invention provides for a highly improved trim guide.