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5:E. H.. ANGLE.
DENTAL REGULATING PLIERS.
Patented Mar. 19 1895.
yOP.S YE CPS CO.. PNOTO.LIT.O. C.
UNITED STATES PATENT OFFICE
EDWARD H. ANGLE OF MINNEAPOLIS MINNESOTA.
SPECIFICATION forming part of Letters Patent No. dated March 19 1895.
Application filed July 5 1894 Serial No. 516 621 (No model )
To all whoa it may concern : by reducing its cross section and thereby
Be it known that I EDWARD H. ANGLE a producing longitudinal displacement in the citizen of the United States residing at Min- particles of its mass. This displacement is 55 neapolis in the county of Hennepin and State most conveniently effected by a pair of pinch-
5 of Minnesota have invented certain new and ers. If the rod or wire a be originally of the useful Improvements in Dental Regulating- length for instance as shown in Fig. 8 it may Pliers; and I do hereby declare the following be extended to the length shown in Fig. 9 by
to be a full clear and exact description of the four applications of the pinchers the bite of 6o invention such as will enable others skilled which on the rod is shown at a'. Hence when
io in the art to which it appertains to make and the rod has been properly applied to the teeth use the same. which are to be regulated it may be readily
My invention has for its object to provide a extended at will to render the same effective form of pinchers or pliers especially adapted for regulating the teeth. 65
for use by dentists in the regulation of teeth. Figs. 3 4 8 and 9 and the jaw shown in
15 My invention and its use are illustrated in Figs. 1 and 2 of the accompanying drawings the accompanying drawings wherein like let- and the foregoing description thereof have ters refer to like parts. been embodied in this case simply for the pur-
Figure 1 is a plan view showing my regu- pose of illustrating the necessity for and the 70 lating device applied to the teeth of a human advantages of my improved form of pinchers
20 jaw and my improved pinchers in operative illustrated in Figs. 1 2 5 6 and 7.
position thereon; and Fig. 2 is a perspective The rod a as usually applied lies close to
of the same. Fig. 3 is a vertical section look- the dental arch or the line of the teeth; and ing from the rear of the jaw shown in Figs. hence in nearly all cases it would be ex- 75 1 and 2 said section being taken on the line tremely difficult and in most cases impossible
25 X X of said Fig. 2 and the extensible rod be- to properly pinch the rod for purposes of exing shown in its normal condition. Fig. 4 is tension by the ordinary pinchers. IIence to a similar view to Fig. 3 the extensible rod meet the requirements of the case I provide being shown as lengthened by pinching or a pair of pinchers d' d2 d3 d4 d5 and dº the 8o the displacement of the particles of its mass. parts of which are constructed for the special
30 Fig. 5 is a perspective view of the pinchers purposes had in view. To these ends the and Figs. 6 and 7 are views in plan showing pincher-jaws d2 c13 are of tapering form out-the inside faces of the pincher jaws the body ward and of slightly curvilinear form down-
of the pinchers being broken away. Figs. 8 ward as shown in Figs. 2 and 5. The under 85 and 9 are plan views showing the rod or wire jaw d3 is extended beyond the upper jaw d2;
35 which is used for regulating purposes re- and both jaws are provided with lateral horns spectively before and after it has been or projections d4 extending outward and for-lengthened by pinching or the displacement ward at an angle to the plane of movement
of the particles of its mass. of the pinchers one horn from each side of 90
In an improved method of regulating teeth each jaw the upper and lower members of
40 which I have invented I employ a rod or a which horns d4 co-operate to form the active wire a preferably of German silver such as surfaces for effecting the bite or pinching ac-shown in Fig. 8 and apply the same to oper- tion on the rod. It follows from the fact that ate with a pulling or pushing action on the the horns d4 project forward as well as side- 95 tooth or teeth to be regulated when the rod wise that the said jaws looking from the
45 is lengthened bydisplacement inthe particles plan form a crotch having a depression or of its mass. For example the rod may be ap- central clearance as shown at d5. The said plied as shown in Figs. 1 2 3 and 4 where horns d4 taper slightly from base to tip and
it is sprung into ferrules b formed on the are of curvilinear form in cross section. One too bands b' which are -secured to the teeth c of the handles d' has tapped therein an ad-
5o both of which require to be pushed outward justable stop dº the inner end of which bears in the dental arch of the jaw c'. When the against the other handle which construction rod is thus in position it may be lengthened serves to determine and limit the bite of the
pinchers under the closing action of the handles thereby preventing the severing of the wire.
As is evident the adjustable stop d3 might be dispensed with and the pinchers provided with a fixed stop which would prevent the pinching portions of the pinchers from coming into contact.
Having regard to the action it is of course
r c obvious that either the right or the left set of the horns d4 may be used according as convenience may require in reaching the rod wherever applied to either jaw. Otherwise stated the tool will operate either right or
15 left and is universal for the purposes had in view. The fact that the jaw dz is shorter than the jaw d3 permits'direct opposition of the co-operating horns d4 in the biting action notwithstanding the angle to the jaw at
20 which the pinchers must be worked by the operator; and in virtue of the right and left set of horns d4 this will come right regard-less of whether the rod be located on the lower or the upper jaw or on the one or the
25 other side of either jaw.
By directing attention to the manner in which the pinchers are applied to pinch the rod as shown in Figs. 1 and 2 it will be seen first by reference to Fig. 1 that it is of the
30 utmost importance that the horns d4 should f be turned at a forward angle as described and second that the under jaw of the pinchers should project farther forward than the up-
per jaw. With this construction the horns d4 may always be applied to the rod a at right angles thereto thus preventing the bending or twisting of the rod.
I3y actual usage I have demonstrated the efficiency of this form of pinchers for the purposes stated.
It will of course be understood that there may be other uses for which this special form of pinchers might be serviceable.
What I claim and desire to secure by Letters Patent of the United States is as follows:
1. A pair of pinchers having pivoted downwardly curved jaws provided at their forward ends with pinching horns projecting at an angle to the plane of movement of the pinchers substantially as described.
2. A pair of pinchers having downwardly curved pivoted jaws the lower jaw being slightly longer than the upper and pinching horns at the extremities of said jaws projecting at an angle to the plane of movement of the pinchers substantially as described.
3. A pair of pinchers having on each jaw a right and a left horn projecting sidewise and forward from the center of the jaw tip substantially as and for the purpose set forth. 6o In testimony whereof I affix my signature in presence of two witnesses.
EDWARD H. ANGLE. Witnesses:
JAS. F. WILLIAMSON
E. F. ELMORE.
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