US610840A

US610840A - Dental pliers

Info

Publication number: US610840A
Authority: US
Publication date: 1898-09-13
Anticipated expiration: 1915-09-13

Description

Patented Sept. l3, I898.

E. 'H. ANGLE. DENTAL PLIERS.

(Application flied Feb. 3, 1898.)

(No Model.)

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lJNiTno STATES PATENT Unmet.

EDWARD I-I. ANGLE, OF ST. LOUIS, MISSOURI.

DENTAL PLIERS.

SPECIFICATION forming part of Letters Patent No. 610,840, dated September 13, 1898.

Application filed February 3,1898. Serial No. 668,960. (No model.) I

To all whom it may concern.-

Be it known that I, EDWARD H. ANGLE, a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Dental Pliers; and 1 do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention has for its object to provide a pair of pliers of improved construction which are better adapted for general use and are particularly adapted for and meet the peculiar requirements of an efficient device for applying teeth-bands.

Very light metal bands are secured around the teeth, in some instances to afford an anchorage and in other instances to secure the teeth-regulating device to a tooth which is to be moved. In such cases the bands must be very tightly and accurately fitted to the outlines of the teeth to which they are applied. \Vith pliers as hitherto constructed great difficulty has been found in properly clamping and fitting the band to the tooth. This is due to the fact that a great many different angles are presented for the operating edge of the pliers to work upon in order to pinch the band around the tooth so as to make the same take the perfect form of the surface of the tooth. IVith a single pair of pincers as hitherto construct-ed it has been found impossible to effect this result.

I accomplish the desired result above noted by constructing the ends of the biting-jaws with a plurality of operating edges adapted for different applications to the teeth, as hereinafter more specifically noted.

The preferred form of my improved pinching-pliers is illustrated in the accompanying drawin gs, wherein, like characters indicating like parts throughout the several views- Figure 1 is a perspective view of my said improved pliers. Fig. 2 is a perspective view showing an upper human jaw partly broken away and illustrating different ways of using the pliers in applying bands to the teeth thereof, and Fig; 3 is a perspective view showing a lower human jaw and illustrating different ways of using the pliers in applying bands to the teeth thereof.

a indicates an upper and b a lower human aw.

0 indicates the band material.

1 indicates the plier-levers, which are pivoted at 2 and have their jaws 3 curved or bent laterally in a plane that cuts the axis of the pivot 2. At their biting ends the jaws 3 are provided with three operating-surfaces 4, 5, and 6. The operating edges 5 and 6 extend approximately parallel to each other and the operating edge 4 is out obliquely, so that it forms an acute angle with the edge 6 and an obtuse angle with the edge 5. The operating edges 5 and 6 project laterally from the jaws 3. At their intermediate portions the jaws 3 are provided with cooperating semicylindrical transverse grooves 7 and also with ooop erating angular grooves 8.

' In Fig. 2 the full-line view of the pliers illustrates how the oblique or beveled operating edges t are adapted for use when a band is being applied to one of the upper teeth from the labial surface of the jaw, and

the pincers indicated by dotted lines in said Fig. 2 illustrate how the inner operating edges 5 become serviceable to clamp a band to one of the upperteeth from the lingual surface of the upper jaw.

In Fig. 3 the pliers indicated by full lines illustrate how the inner operating edges 5 become serviceable in clamping a band to one of the lower teeth from the lingual surface of the jaw,'and the pliers indicated by dotted lines in said Fig. 3 illustrate how the outer operating edges 6 are adapted for use in clamp ing a band to one of the lower teeth from the labial surface of the lower jaw.

By reference particularly to Fig. 1 it will be noted that the jaws 3 are curved or bent in the plane of the biting-surfaces of said jaws and that the biting edges 4, 5, and 6 extend in the same plane. It will also be noted that the biting edges 4.- and 5 form an obtuse angle, the vertex of which is located on the concave side of the jaw,'while, on the other hand, said biting edges 1 and 6 form an acute angle, the vertex of which is located on the convex side of the said jaw.

From the foregoing illustrations and statements made it must be obvious that a pair of pliers constructed as above described is adapted for access to the labial and lingual surfaces of both the upper and lower incisors or to the molars which lie farther back in the mouth. In other words,the pliers are adapted for universal use in applying or fitting bands to the teeth. The cooperating semicylindrical grooves 7 are serviceable for grasping round wire, and the cooperating angular grooves 8 are serviceable for holding square nuts or square wires. These grooves, it will be noted,extend approximately on lines which represent radii of the curve on which the jaws of the pliers are bent. This is important, as it permits the grooves to be used with the work extending tangentially to said grooves and gives an increased clearness for the hand of the operator.

What I claim, and desire to secure by Lettors Patent of the United States, is as follows:

1. A pair of pliers, having its jaws 3 bent in the plane of the biting-surfaces thereof, and provided with the terminal biting edges 4 and 6 that form acute angles to each other,

located with their vertices projecting on the convex sides of said jaws, substantially as described.

2. A pair of pliers having its jaws 3 bent in the plane of the biting-surfaces thereof, and provided With the terminal biting edges 4 and 5 that form obtuse angles, located with their vertices projecting on the concave sides of said jaws, substantially as described.

3. The pair of pliers having the jaws 3, provided with the terminal biting edges 4, 5 and 6, said edges 4: and 5 forming obtuse angles and said edges 4: and 6 forming acute angles, substantially as and for the purposes set forth.

4. A pair of pliers having laterally curved or bent jaws provided at their intermediate portions with cooperating grooves that extend approximately on a radius of the curve on which said jaws are bent, substantially as and for the purposes set forth.

In testimony whereof I affix my signature in'presence of two Witnesses.

EDWARD H. ANGLE.

Witnesses:

ANNA HOPKINS, T. F. FLETCHER.