US1761902A - Denture - Google Patents

Description

K. G. ANDERSON DENTURE Filed Nov 22, 1928 INVENTOR 0116. Anderson fiwed P. GOrz'n ATTORNEY Patented June 3, 1930 PATENT OFFICE .KARL G. ANDERSON, F SEATTLE, WASHINGTON DENTURE Application filed. November 22 1928. Serial No. 321,246.

This invention relates'to improvements in dentures and has for its principal object to provide. a device of this character whereby a dental plate is-resiliently held in place withn the mouth without the usual suction between the plate and the roof of the mouth or gums. v

The important feature is that there is no roof to the plate with the result that the taste of the wearer is not interteredwith as is the case with the usual plate which entirely covers the rootof the mouth, for example.

A further object is that the pressure or force exerted in chewing bears directly on 1 the gums and not on the roof of the mouth, thereby eliminating any irritation between the plate and the roof of the mouth.

A still further object is to provide a plate which may be more easily kept clean as small particles of food cannot find lodgment between the plate and the-root of the mouth.

The invention is illustrated in the accompanying drawings, in which:

Figure 1 isa side elevationof my device.

Figure 2 is a rear elevation.

Figure 3is a plan view.

A set of false teeth consisting in an upper plate 1 and a lower plate 2 have the usual teeth 8. The plates are resiliently connected 0 by springs i which are made of a non-corrosive or plated metal. The springs are tensioned to force the plates from each other so that a slight muscular reaction would be necessary to keep the teeth closed.

The ends of the springs are extended toward the front of the plate, one being secured to the upper plate and one to the lower plate. The extreme ends of the spring connected to the'lower plate are bent inwardly, as at 5, pass between two adjacent teeth and then bent downwardly upon themselves, as at 6, to enter a small hole formed in the plate, thereby firmly anchoring the springs, yet rendering them easily removable in case of breakage or loss of tension. The ends con- From the above it will be seen that when the jaws of the wearer are opened so as to bring the lower set into its dotted position as seen in Figure 1, stress is put upon the spring l which compels the lower plate to move with the lower jaw of the wearer, the upper plate 1 being pressed and held into its proper position upon the gums by the action of the spring l. As stated, the use of the denture of my invention results in a more near approach to natural teeth than dentures heretofore known in the art, for several reasons, the main one being that theplates follow the upper and lower jaws on which they are respectively positioned, will not come loose on account of the spring action, and food taken into the mouth is followed by a natural taste, which .is not the case in the ordinary denture.

V hat is claimed to be new is:

' A pair of dentures comprising an upper plate fitting and covering the gums, a lower plate fitting the gums, coil springs arranged one at each side of the plates and at the rear thereof, the straight ends of each spring extending forward outwardly of the teeth, the end being turned'in across the teeth, the lower end beingsecurcd to the lower plate and the upper end being bent upward around the teeth.

In testimony whereof I ailiX my signature,

KARL G. ANDERSON.

nected to the upper plate are bent upwardly but not secured as the lower set is, as it would not be possible to easily remove the teeth from the mouth it they could not be separated.

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