US1508741A - Pig-tooth nippers - Google Patents

Description

Sept. 16 1924.

R. w. BRUENE I PIG TOOTH NIPPZRS Filed Jun. 29 .1923

R W ifimuene.

Patented Sept. 16, 1924.

* UNITED STATES;

RUDOLPH vr. BRUENE, or; oosnme," IOWA.

I PIG-TOOTH ivIrrERs.

Application filed June 29, 1923. Serial No. 648,511.

T 0 all whom it may concern Be it known that I, RUDOLPH 1V. BRUENE, a citizen of the United States, residing at Cushing, in the county of lVoodbury and State of Iowa, have invented certain new and useful Improvements in Pig-Teeth Nippers, of which the following is a specification.

The present invention relates to nippers for cutting teeth on pigs. When the pigs are born they have eight teeth provided, evi dently, for fighting purposes, and st'ockmen often out these teeth off to prevent pigs from fighting each other.

The main object of this invention is to furnish an instrument with which this operation can be easily performed, and the .nippers are accordingly constructed with four cutting edges which are brought together around the teeth, two of the edges passing beneath the other two edges in the manner. of shears, thus cutting the teeth smoothly without difficulty.

Ordinary instruments of this kind are only provided with one pair of cuttingedges, which accordingly can engage the teeth to be operated upon, on two sides only, and are apt to slip off as a firm hold cannot be obtained. This disadvantage is overcome in the instrument forming the subject matter of the present invention as it engages the teeth at four points simultaneously, so that the instrument cannot possibly slip away from the teeth, nor is there any special exertion required to retain the instrument on a tooth while operating on it.

Another disadvantage with ordinary nippers used for this purpose is that they have a tendency to crush the tooth instead of clipping it off, and the tooth crushed may become infected and cause much trouble or the entire loss of the animal, or it may also cause what is termed bull nose, that is'to say, the nose of the animal is drawn to one side creating a condition which makes the animal practically worthless.

In the accompanying drawing one embodiment of the invention is illustrated; and

Figure 1 is a perspective view of the instrument;

Figure 2 is a fragmentary bottom plan view of the jaws in closed position;

Figure 3 is a similar plan view of the jaws in open position; and

Figure t is a fragmentary end view of the jaws of the nippers. j The instrument has the general character of a pair of pliers having a right and left shank or handle 10 and 11 respectively, preferably knurled as at 12, and with their rear ends bent together to form stops 13 for limiting the inward movement of the handles. These handles or shanks are pivoted as at 14 and their forward extensions constitute jaws 15 and 16 respectively. ience in handling, the shanks are bent upwardly from. near the pivot pin 14, as seen in Figure 1, which represents the bottom side of the nippers, while the jaws 15 and 16 stand at substantially right angles to the hinge portion l'To-f the: instrument. lower ends of the jaws 15 and 16 are bent together substantially at right angles to the necks of the jaws and each bit 18 and 19 of the jaws is formed with a pair of cutting edges 20, which are positioned in the shape of a V with respect to each other. The two bits preferably engage with the left jaw 18 below the right jaw 19, and the under faces of the cutting edges 20 of the left jaw are beveled downwardly as at 21, while the cut ting edges of the right bit 19 are beveled upwardly so that when the a'ws are closed, two fiat surfaces as at 22 of the bits engage. The points 21 are blunt or rounded.

As is clearly shown in Figure 3, the tooth as indicated at 23 of this figure, is approached from four sides by the four cutting edges 20 and held firmly between them, when the jaws close around the tooth and a firm pressure on the handles 11 insures a clean cut of the tooth. This is easily performed without any crushing or leaving the tooth in bad condition after the operation. The usual spring 24 is provided between the shanks 10 and 11 to hold the instrument normally open.

' Having thus described the invention, what is claimed as new is:

1. A tooth nipper comprising a pair of hinged shanks having stops for limiting the For conven-' The closing movement of the shanks, jaws at the forward endsof the shanks, said j awsv being bent at substantially right angles to the hinge portion of the nipper, and a pair of V diverging cutting edges at the extreme end of each jaw, said cutting edges and jaws forming integral parts of said shanks and ing movement of the shanks jaws at the for 7 ard ends of said shanks, said jaws running in substantially parallel direction to the axis of the hinge and terminating With opposing bits and V-shaped cutting edges on said bits, said bits forming integral parts 1 of said shanks and being adapted to overlap when said stops abut. V

In testimony whereofI affix my signature.

RUDOLPH BRUENE. [n s]

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