US317667A

US317667A - Dental plate

Info

Publication number: US317667A
Authority: US
Publication date: 1885-05-12
Anticipated expiration: 1902-05-12

Description

(No Model.) I

- A. H. PARKER.

- DENT-AL PLATE. "No. 317,66'7 a Patented May '12, 1885.

'IIIIII WITNEEEIEEL INVENTUR.

N, PETERS. Plwto-Lilhognplur, Wuhingwn, EC.

UNITED STATES PATENT OFFICE.

AARON H. PARKER, OF BOSTON, MASSACHUSETTS.

DENTAL PLATE.

SPECIFICATION fcrming part of LettersPatent No. 317,667, dated May 12, 1885.

Application filed April 9, 188 1. (No model.)

To all whom it may concern.-

Be it known that I, AARON H. PARKER, of Boston, Massachusetts, a citizen of the United States, have invented certain new and useful Improvements in Dental Plates, of which the following is a specification.

My invention relates to improvements in the construction of dental plates adapted to be secured in place within the mouth of the wearer by atmospheric pressure; and it has for its object to obtain a more firm and rigid fitting and holding of such plates than have heretofore been accomplished.

In the accompanying drawings is represented a dental plate in which my present improvement is embodied in the form now best known to me.

Figures 1 and 2 are views in plan of the upper and lower sides of said plate, respectively. Fig. 3 is a vertical section through said plate on the line :0 x of Fig. 1, and Fig. t a section of apart of Fig. 3, illustrative of its construction and operation, both these figures being upon an enlarged scale as compared with Figs. 1 and 2.

My present improvement consists, in part, in forming a passage through the plate, whereby the air between it and the mouth may be exhausted more readily and completely, and the plate thereby fitted more firmly and se curely than could heretofore be done. In connection with this passage I provide a valve to prevent the re-entrance of air from outside under atmospheric pressure.

In addition to the vacuum chamber or depression A, I may also add to it auxiliary chambers or depressions B B, preferably located upon the rear lateral parts of the plate under the extremities of the alveolar processes, as shown. These auxiliary chambers, which I believe to be new with myself, are preferably made to connect or communicate with the main chamber A, so that the exhausting, sucking, or drawing out of the air through the one valved passage will exhaust the air from all the chambers A B B. It is obvious that a valved air-exhaust may be applied directly to each supplementary chamber,

although the construction shown in Fig. l is preferred by me.

The relative location of the vacuum-chambers A B B, which form the points of strongest adhesion of the plate, should be substantiall y as shown, the main or central chamber,

A, covering the central palatal surface of the plate, and the subsidiary chambers,B B,being located in the base or rearward lateral eXtremities or heel-pieces, as shown. The collective area of these three chambers may be as large as their location upon the plate will permit, so long as enough of the true surface or base of the plate is left to give a good bearing against the mouth and prevent pain and dis comfort to the wearer.

\Vhen the air-passage a is formed in a plate provided with a single vacuum-chamber, it should connect with said chamber; when a series of vaeuunrchambers is used, Iprefer to carry theair-passage from the main or central chamber of the series.

The valving of the airexhaust passage (0 may be done in any desired manner which will permit the air to be drawn out and prevent its return.

I have shown in Figs. 2, 3, and 4 a convenient method of forming the valve and attaching it in its place. The valve represented in these figures I make of a disk of kid or similar suitable packing material, (shown at b,) over which is placed a retaining-plate, 0, formed of the same material as the dental plate itself, commonly hard rubber, and this is kept in place by the button (I, Fig. 2. The seating for the plates b and c, I ordinarily form in the plate itself, as shown in the drawings.

air-passage a, and the valve that normally closes the air-passage and that is sunk into the plate so as to present a plane surface to the interior of the mouth.

bination of the main vacuum-chamber A, the In testimony whereof I have hereunto subsupplemental chambers 13 B, passages for scribed my name this 7th day of April, A. D. connecting the chambers, the air-exhaust a, 1884.

valve 1), plate 0, and retaining device d, said AARON H. PARKER. 5 valve, plate, and. retaining device being sunk Witnesses:

below the surface of the plate, substantially J. HENRY TAYLOR,

as set forth. JAMES F. BLIGH.