US1230853A - Artificial tooth. - Google Patents

Description

. BOWSHER.

4 ICIAL TOGTH. AP map luNE s. 191s.

1,230,853. Patented June 26,1917.

RUTHERFORD H. BOWSHER, OF ADELIHI, OHIO.

ARTIFICIAL TQO'II-I.

Speoication of Letters Patent.

Patented June 26, 1917.

Original application filed March 27, 1913, Serial No. 757,137. Divided and this application filed .Tune 5, 1916. Serial No. 101,790.

To all whom t may concern.'

Be it known that I, RUTHERFORD I-I. Bowsnnn, a citizen of the United States, residinfr at Adelphi, in the county of Ross and State of Ohio, have invented certain new and useful Improvements in Articial Teeth, of which the following is a specification.

This invention relates to the structure of artificial teeth and it includes the novel features hereinafter described and particularly pointed out in the claim.

This application is liled as a divisional application of application filed March 27, 1913, Ser. No. 757 ,137

An object of the invention is to provide means for reinforcing an artificial tooth, which means is concealed behind the body of the tooth 'and is securely connected with same so that the tooth may not become displaced with relation to the brace.

A further object of the invention is to provide in connection with the brace of the tooth a portion adapted to extend over the cutting edge of the'tooth at any desired angle in order that the said edge may be protected and preserved against wear.

Another object of the invention is to provide a tooth of the character indicated which is convenient when fitting an articial bridge in the mouth before it is fastened permanently in position.

With these and other objects in view, the invention consists in certain novel features of construction as hereinafter shown and described and particularly pointed out in the claim hereunto appended.

In the accompanying drawings Figure 1 is a perspective view of a molar to which the brace is applied.

Fig. 2 is a perspective view of the form of brace shown in Fig. 2 detached.

Fig. 3 is a perspective view of the molar with brace attached thereto.

Fig. 4 is a transverse, sectional View of the molar with brace properly applied thereto.

Referring more particularly to the accompanying drawings, in which like numerals designate like parts throughout, my invention, in detail, is described as follows:

In the form of the invention as illustrated in Figs. l to 4 inclusive the body 2 is in the form of a molar tooth and the plate 4 is provided with-longitudinally disposed ridge 3 pressed therein which lits in a corresponding groove 1 provided in the back of the molar 2. The ridge 3 addsrigidity to the plate 4 and by reason of the fact that it enters the groove 1 it holds the tooth 2 in proper position against the plate 4. A flange 5 is formed or provided at the end of the plate 4 and a convexity 6 is provided in the said iange which fits snugly in a concavity 7 provided in the body 2. Therefore the tooth is effectually braced both longitudinally and laterally and the plate is securely held against displacement when the tooth is subjected to strains applied in any direction. In all the forms of the invention the backs of the teeth are ground to approximately the same angle of inclination. Likewise all bracing plates are made with approximately the same planes and same flanges. Therefore all similar teeth are interchangeable.

Having described my invention, what I claim is:

A molar comprising a body having a protruding portion adjacent the outer end thereof, a groove formed in the vertical rear face of the molar and a concavity formed in the under face of the protruding portion, a plate of substantial L-shaped construction comprising a vvertical portion and flange, said Vertical portion having a ridge extending longitudinally and centrally thereof registering with the groove of the molar and a convexity provided upon the flange which enters or registers with the concavity in the molar, when the plate is properly secured to the latter.

In testimony whereof I aflix my signature in the presence of two witnesses.

RUTI-IERFORD H. BOWSI-IER.

Witnesses: v

PAUL LEON` REDFERN, EUGENE REDFERN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

' Washington, D. G.

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