US731586A - Upper-cuspid forceps. - Google Patents

Description

PATENTED JUNE 23, 1903.

I'. s. MANNING. UPPER oUsPID Pommes.

APPLICATION FILED MAR. 14, 1903.

N0 MODEL.

innen roz lmm fixant/5 @XX knusse:

me Nonms PETERS co.. Fumo-uma, wAHINGmN. n. c.

` No. 731,586. l

Patented June 23, 1903.'

PATENT OEEIGE..

` `FRANCIS S. MANNING, OF VERSAILLES, MISSOURI.

`UPPER-CUSPID FORCEPS.

SPECIFICATION forming part of Letters Patent No. I731,586, dated June 23, 1903.

Application nea March 14, 190s.

To all whom t may concern:

Be it knownthat'l, FRANCIS S. MANNING, a citizen of the United States, residing at Versailles, in the county of Morgan and State of Missouri, have' invented certain new and useful Improvements-in Upper-Cuspid Forceps; and I do hereby declare the following to be a full, clear, and exact description of the invention, suchas Willenable others skilled inthe art to which it appertains to make and. use

the same.

This invention, which relates to dental appliances, contemplates the production of an t improved forceps adapted for use in extracting certain o f the upper teeth, and more 'especially the upper-cuspid teeth, the objects of the improvementV being to eliminate all danger consequent upon slipping or sliding of the forceps inthe extraction of the class of teeth referred to and to prevent injury to the hand of the operator from the handles of the instrument.

The nature of the invention will be readily comprehended, reference being had to the fol# lowing detailed description and to the accompanying drawings, in vwhich- Figureflis a front elevation of a forceps,

embodying myinvention. Fig. 2 isa side ele;` vation. Fig. 3 is an elevation of the opposite side. Figgl is an enlargedgtop view. Fig. 5 is an enlarged sectional viewof the beaks of the forceps. Figs. 6 and-7 are enlarged in-' side views, respectively, of the palatineand` the labial beaks. Fig. 8 is a sectional view on line 8 8 of Fig. l. l

i Referring to the drawings by numerals, l 2 denote the forceps members, which are Apiv` oted together by a pin `3 or the like. The inner, or `what istermed the palatine, beak of the forceps is designated by the numeral 4 and is integral with its handle 5, and the outer or labial beak 6 is integral with its handle 7.4 Thebeaks at their outer side describe the segmentof a circle substantially as shown, and the inner faces of each, which likewise describe a somewhat similar segment, are slightly separated in the closed condition of the instrument. Y,

` Lengthwise of the inner face of the palatine or inner beak is a `groove 8 approximately one-eighth of an inch wide and which is of Serial No. 147,783. (No model.)

slightly less width than the beak and has its greatest depth approximating one-sixteenth of an inch. The groove is of V form in crosssection, whereby the fang of the tooth is engaged at two points by the straight sides of the groove and at a point opposite the fang is engaged by the labial or outer beak, which has its inner face concaved, as shown at 9.

Both of the inner faces of the beaks are serrated to increase the friction or traction, and with the fang engaged' at three points a rotary movement of the tooth is accomplished without liability of the forceps slipping off or sliding on the fang. The beaks are by the described construction. made to conform very closely to the class of teeth which the forceps is designed to extract, and theends of the beaks are brought to a sharp edge to enable the insertion of the ends beyond'the gum. The width of the beaks is approximately fivethirty-seconds of an inch, which width is maintained; but the thickness of the beaks may be varied according to the degree of strength required.

A The handles are of improved construction with the view to securing exact conformation `;to the hand of the operator and 'also to prevent injury to the hand by cutting, pressing, or impinging when in use. As shown in Fig. 8, the inner surfaces of the handles at the point of closest approach are each made convex, so that gripping` action is prevented. The handle 5 at its lowerend 10 'crosses the line centrally through theinstrument, (indi cated in Fig. 1,) and said lower-end is slightly twisted, as shown in Figs. l and 4.. Also the hook 11 of the handle '7 is transversely i'nclined, as shown in Figs. l and 3. The described formation of the handles insures exact conformation to the hand ofthe operator in grasping the instrument and prevents injury thereto in the manner stated'.` The outer surfaces of the handles arefprovided `with the usual serrations shown to'preventslippingin the hand.

I claim as my inventionl. An upper-cuspid forceps having its inner beak provided with a V-shaped groove, and its outer beak concaved.

2. An upper-cuspid forceps having beaks the outer sides of which describe the segment IOO of a circle and the inner faces of which de- In testimony whereof I afx my signature scribe the segment of a circle and are slightly in presence of two witnesses. separated in the closed condition of the for- FRANCIS S MANNING oeps, the inner beak being provided at its inner face 'with a serrated V-shaped groove, and Witnesses:

the outer beak being provided with a serrated W. H. KAVANAUGH, concave groove. t ALFRED HEIMMAN.

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