US93429A

US93429A - Improvement in flasks for vulcanizing rubber plates for setting teeth

Info

Publication number: US93429A
Authority: US
Publication date: 1869-08-10
Anticipated expiration: 1886-08-10

Description

N.PETERS. FHGTD LTHOGRAPMER. WASHINGTON n C weitet rabes @anni dimitir.

l `To all whom it may concern eld, in the county of Sangamon, and in the State of marked thereon.:

vided, like,that, into vtwo jaws. The lower jaw of jaw has a detachable lid, which projects, at convenjectious, screws extend into corresponding projecting ,j screwed down upon the lower metallic jaw, by means of the screws and projecting .eyes above mentioned,

,There maybe 'the imperceptible difference of one thread of thescrew, between one side or the other,

CYRUS G.'FRENGH, -OF SPRINGFIELD, ILLINOIS.

Letters Patent No. 93,429, lated August 10, 1860.

IMPROVEIVINT IN FLASKS FOR VULCANIZING- RUBBER PLATES FOR SETTING- TESTE.

T119 Schedule referred-to in these-Letters Patent and making peutl of the Same.

Be it known that I, Gvnus G. Funken, of Springr Illinois, have invented an Improvement in Flasks for Vulcanizing Rubber Plates for Setting Teeth and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the 'let-ters of reference My invention consists in' a new method for constructing the flasks for vulcanizing rubber plates for the setting of teeth, andalso anewvmethod ofcomlectingthe two rings together which form the flask.

The flask now used by dentists for this purpose is made of hard metal, shaped like the human, and di-Y this ordinary flask lis one piece of metal, bottomV and sides, the bottom not being detachable. The upper` ient points, over the upper jaw.. Through these proeyes in themetallic jaw'below.

After the plates, which are to be vulcanized, are pressed into this flask, so constructed, the upper lid is put on, and that, with the upper metallic jaw, is

the jawslfitting upon each other like thej jaws in the human mouth when closed.

These screws do not always make the pressure ,on

all vpartsA of these metallic jaws even and uniform.

which difference affects the uniformity of theplate, and of course the eveuness ofthe teeth set upon it.

' IoI avoid this difficulty, and secure a uniform pressure upon the rubber`- plate to be vulcanized, I construct a ask, as shown in Figure 1, with only two pieces of metal, one for the upper and one for the lower jaw, and connect these two together'byvme'ans of metallic spring-strips, with catches on the end, the spring-strips being of uniform length, or I can connect them by means of. bolts and keys.

I also use a detachedupper lid whenever desired, and attach to it the spring-strips, as is shown'in figs. 1 and 2.

'detachable upper lid with A represents the upper jaw or ring, and B the lower jaw or ring of a ilask 4for vulcanizing rubber plates upon which to set teeth. C. represents the metal in any desiredway, to vthe outside of the upper metallic jaw A, and extending downward below said jaw to just such a distance as to' allow the catch c, on the lower inner end of said jaw, to hook under the lower edge f of a projecting slot, d, extending down the side of the lower jaw B, nearly to the bottom thereof.

Figures 1 and 2 represent the vulcanizing-ask with the spring-istrip C attached to the detachable lid of the upper jaw or ring A. These figures also show the construction of the springs (l and the catch c at the lower end.-

Figures 4 and 5 show the upper jaw or ring A with au undetachable top, and the attachment of the springstrips C to the sides of the same, and also the rings projections the bolts E are thrust, and made to keep in place the 'upper ring key G. Figure 8 lshows the A by means of theeye F and construction of the projecting the aperture for the reception of the bolt E. Y

Now, what I claim as my invention, and desire to secure by Letters Patent, is-

lhe within-described flask, consisting of the rings or sections A and B, secured together by means ot the spring-strips O, substantially as described, and for the purposespeciiied. Also, the spring-strips C, provided with the catches;

or detents c, when 'appliedto the rings or sections A and B, or to said sections and the detachable cover A@ substantially as shown and described.

In testimony that I claim the foregoing, I have hereunto set lmy hand, this 9th day of J une, 1869.

GYRUS G. FRENCH.

Witnesses v GEO. 0. Mener,x '.lHos. NALE.

n spring -strips, of uniform length, fastened securely and lirmly by the upper partl