US445230A - Artificial tooth - Google Patents

Description

(No Model.)

A. PAGE 80 S. S. BLOOM.

ARTIFICIAL TOOTH.

No. 445,230. Patented Jan. 27, 1891.

C 1 lllllllllhl lTE STATES PATENT OFFICE.

ARTIFICIAL TOOTH.

SPECIFICATION forming part of Letters Patent No. 445,230, dated January 27, 1891.

Application filed February 6, 1890. Serial No. 339,405. (No model.)

To aZZ whont it may concern.-

Be it known that we, ALFRED PAGE, a citizen of the United States, and SAMUEL S. BLOOM, a subject of the Emperor of Russia, both residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Artificial Teeth; and we do 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, reference being bad to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

Our invention relates to improvements in securing devices for uniting vulcanite or other plates to artificial teeth,and has for its object the provision of means whereby the proportion of platina for use in the teeth before baking is reduced to a minimum while the strength and efiiciency of the work is in no way impaired.

The invention consists, essentially, in providing one or more plain strips of platina across an opening or bore in the teeth,which strip or stripsare made to engage, and by the aid of a suitable solder or cement to securely hold, a pin, which can be attached after annealing the teeth, and which projects out beyond the inner side of the teeth to engage the vulcanite or other plate and thus render the union between the teeth and the plate reliaable and secure.

The following detailed description will fully disclose the nature and purpose of our said invention, and the manner in which we carry the same into effect.

The accompanying drawings illustrate our invention.

Figure l is an interior elevation of a group of teeth and gums, showing the openings or bores and the platina strip or strips crossing them. Fig. 2 is a section through Fig. 1, on line w, showing a pin in place. Fig. 3 is an elevation of the pin employed with this form of strip. Fig. 3 is an elevation of a modified form of pin shown in Fig. 3. Fig. 4 is an elevation of the same pin, taken at right angles to Fig.

Similar letters of reference indicate corresponding parts in all the figures where they occur.

A is the tooth and gum, made of porcelain or other similar material baked or annealed in the usual manner. In the rim or ridge on the inner side we provide openings a. a, of a suitable depth an d size to receive one or more transverse plat-ina strips, and a pin which is to be engaged therewith. In the teeth when being molded the platina strips, which are marked 1) b, are placed across the openings at a, and when the teeth are baked the strips will be held securely in place.

\Ve may employ the platina strips, as shown to the left hand in Fig. l, or one only, as shown at the right in same figure. Vith the T-head or half-T head we prefer two strips of platina in each opening, which are set a little distance apart and a short distance from the bottom or front wall of the opening, and a pin 0, having a T or half-T head 0 on its lower or engaging end, is employed to engage the strips. The head projects beyond the shank or shaft of the pin in two directions,but is of the same width as the shank or shaft in the opposite directions, so that it can he slipped in between the strips, and when the head has passed then can be turned crosswise back of them, as shown in Fig. 2, and by means of solder or some suitable cement, as before mentioned, be securely and firmly fixed in the teeth and will rtnder the union between the teeth and the vulcanite plate very reliable. The projections, whether in the form of a re- 8 5 cess, as c, or a bent end or head are provided for giving a positive hold of the pin upon the strips.

It will be seen that the quantity of platina employed is very small, and that therefore the cost of the teeth is reduced, since the pins 0 can be made of less expensive material, as they do not need to be set in place until the teeth are annealed.

Having thus described our invention, what 5 we claim, and desire to secure by Letters Patent, is-

1. An artificial tooth having an opening in the side thereof, and a strip or strips of platina extending about centrally across said opening, in combination with a pin having a stem In testimony whereof we affix our signatures provided With a proj eetion on the inner end for in presence of two Witnesses. engaging the strip or strips, as set forth.

2. The combination of an artificial tooth ALFRED PAGE. 5 havinganopening,asdeseribed,andprovided SAMUEL S. BLOOM.

with a pair of platina strips crossing such opening,with a space between them,with a pin \Vitnesses: having a T-head on its inner end for inser- THOS. D. MOWLDS, tion between and beyond and in engagement FREDK. J. LAMBERT.

10 with the strips by turning the pin, as set; forth.

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