US726644A - Seamless gold crown for teeth. - Google Patents
Seamless gold crown for teeth. Download PDFInfo
- Publication number
- US726644A US726644A US13954603A US1903139546A US726644A US 726644 A US726644 A US 726644A US 13954603 A US13954603 A US 13954603A US 1903139546 A US1903139546 A US 1903139546A US 726644 A US726644 A US 726644A
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- US
- United States
- Prior art keywords
- pattern
- aperture
- mold
- teeth
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C5/00—Filling or capping teeth
- A61C5/70—Tooth crowns; Making thereof
- A61C5/77—Methods or devices for making crowns
Definitions
- Figure l is a transverse section of a plaster-of-paris matrix formed by an impression of the tooth to be crowned.
- Fig. 2 is a transverse section of said matrix with the hard metal casting formed therein.
- Fig. 3 is a side view of said go casting prepared to be used in forming the rubber or analogous elastic mold.
- Fig. 4 is a transverse section of said mold.
- Fig. 5 is a detached transverse sectional view of the mold.
- Fig. 6 is a transverse section of said mold with the easily-fusible pattern formed therein, and Fig. 7 shows said pattern with the crown-metal swaged thereon.
- a mold e of rubber or other suitable elastic material, by forming a flask of three meplate and of the diameter of the mold e to be formed.
- the bottom plate f is formed with ture by pressure applied to the bottom plate.
- the top plate f is provided with a vertical aperture 45, which is concentric with the aperture g and somewhat larger in diameter than the aperture 9 and formed with a rimj adjacent to the aperture g.
- the aperture '2' is inserted the aforesaid prepared hard-metal pattern oin such a manner as to cause the said pattern to be sustained in the center of the aperture g by means of the flange d, resting on the rim j.
- the pattern 0 is removed from its aforesaid position and the rubber or analogous material is introduced into the aperture g through the aperture 2'. Then the pattern 0 is inserted through said aperture '4' and forced into the elastic material in the aperture 9 until the flange d is brought to rest on the rim j. In this position the pattern 0 is subsequently confined by a plug or suitable filling Z, inserted into the aperturet' and made to press onto the top of the web 0'. To insure a perfect impression of the pattern 0 in the rubber and at the same time vulcanize said rubber, the bottom plate f is to be heated to the requisite temperature and subjected to upward pressure by any suitable means.
- the plug Zis removed from the aperture 2' and the pattern a withdrawn from the mold. Ithen pour into said mold melted metal which is fusible by heat ject said facsimile to a sufficient heat below crowns, by forming a matrix from an impression of the tooth, then forming in said matrix a tooth-pattern of cast hard metal, then forming an elastic mold around said pattern, then casting in said mold a facsimile composed of a metal fusible by heat below 212 Fahrenheit, then swaging the crown-metal upon said facsimile, and then fusing the metal of the facsimile and eliminating it from the crown-metal as set forth.
Description
N0 MODEL.
WITNESSES:
UNITED STATES PATENT QEEICE.
JOHN R; OOMINS, oE SYRACUSE, NEW YORK, ASSIGNOR E TWO-THIRDS TO CHARLES K; NDERwooD ANDBESSIE L. GAY, OF SYRACUSE, NEW
YORK.
SEA MLESS GOLD CgROWNFOR TEET-H.
SPECIFICATION forming part of Letters Patent No. 726,644, dated Api-il 28, 1903.
Application filed January 19, 1903. Serial No. 139,546- (No model.)
To all whom it may concern.-
Be it known that I, JOHN R. OoMINs, a citizen of the United States, and a resident of Syracuse, in the county of Onondaga, in the, State of New York,have inventednew and use-' ful Improvements in the Manufacture of Seamless Gold Crowns for Teeth, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact,
' a protuberant portion h, which is of nearly the same diameter as the aperture 9 to allow said protuberance to be forced into the aper- 10 description. V The object of this invention is to manufacture seamless metallic tooth-crowns in an ex-- To enable others skilled in the art to which my invention pertains to more readily avail themselves of my invention, I have illustrated in the annexed drawings the successive steps of my process.
In the said drawings, Figure l is a transverse section of a plaster-of-paris matrix formed by an impression of the tooth to be crowned. Fig. 2 is a transverse section of said matrix with the hard metal casting formed therein. Fig. 3is a side view of said go casting prepared to be used in forming the rubber or analogous elastic mold. Fig. 4 is a transverse section of said mold. Fig. 5 is a detached transverse sectional view of the mold. Fig. 6 is a transverse section of said mold with the easily-fusible pattern formed therein, and Fig. 7 shows said pattern with the crown-metal swaged thereon.
I practicing my invention I proceed as follows, to wit: 1 form aImatriX (represented at a in the drawings) from plaster-of-paris by pressing said plasteronto .the natural tooth, so as to obtain therefrom a perfectimpression b in said matrix. I- then pour into said matrix melted hard metal, and thus form from said metal a perfect pattern a or facsimile of the tooth. I then remove said pattern from the matrix and by means of a suitable tool trim and face the stub end of the pattern, so as to form it with a broad horizontal web 0 and with a circumferential flange d on said web, as shown in Fig. 3 of the drawings. I
next form around and directly on said pattern a mold e, of rubber or other suitable elastic material, by forming a flask of three meplate and of the diameter of the mold e to be formed. The bottom plate f is formed with ture by pressure applied to the bottom plate. The top plate f is provided with a vertical aperture 45, which is concentric with the aperture g and somewhat larger in diameter than the aperture 9 and formed with a rimj adjacent to the aperture g. Through the aperture '2' is inserted the aforesaid prepared hard-metal pattern oin such a manner as to cause the said pattern to be sustained in the center of the aperture g by means of the flange d, resting on the rim j.
In forming the elastic mold e the pattern 0 is removed from its aforesaid position and the rubber or analogous material is introduced into the aperture g through the aperture 2'. Then the pattern 0 is inserted through said aperture '4' and forced into the elastic material in the aperture 9 until the flange d is brought to rest on the rim j. In this position the pattern 0 is subsequently confined by a plug or suitable filling Z, inserted into the aperturet' and made to press onto the top of the web 0'. To insure a perfect impression of the pattern 0 in the rubber and at the same time vulcanize said rubber, the bottom plate f is to be heated to the requisite temperature and subjected to upward pressure by any suitable means. After the said mold has been completed the plug Zis removed from the aperture 2' and the pattern a withdrawn from the mold. Ithen pour into said mold melted metal which is fusible by heat ject said facsimile to a sufficient heat below crowns, by forming a matrix from an impression of the tooth, then forming in said matrix a tooth-pattern of cast hard metal, then forming an elastic mold around said pattern, then casting in said mold a facsimile composed of a metal fusible by heat below 212 Fahrenheit, then swaging the crown-metal upon said facsimile, and then fusing the metal of the facsimile and eliminating it from the crown-metal as set forth.
JOHN R. COMINS. [L. s.] Witnesses:
J. J. LAASS, E. L. MEIER.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13954603A US726644A (en) | 1903-01-19 | 1903-01-19 | Seamless gold crown for teeth. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13954603A US726644A (en) | 1903-01-19 | 1903-01-19 | Seamless gold crown for teeth. |
Publications (1)
Publication Number | Publication Date |
---|---|
US726644A true US726644A (en) | 1903-04-28 |
Family
ID=2795154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13954603A Expired - Lifetime US726644A (en) | 1903-01-19 | 1903-01-19 | Seamless gold crown for teeth. |
Country Status (1)
Country | Link |
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US (1) | US726644A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2887746A (en) * | 1957-03-12 | 1959-05-26 | Bogoff Henry | Making of cuff links and the like |
-
1903
- 1903-01-19 US US13954603A patent/US726644A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2887746A (en) * | 1957-03-12 | 1959-05-26 | Bogoff Henry | Making of cuff links and the like |
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