Improvements in Artificial Teeth and in the Process of Securing them to the Base Plates of Artificial Dentures.
Year: 1891

page_text: Date of Application (in United Kingdom), 27th June, 1891
Complete Specification Left, 27th June 191-Accepted 14th Nov 1801
COMPLETE SPECIFICATION.
Improvements in Artificial Teeth and in the Process of Securing
them to the Base Plates of Artificial Dentures.
I, ELBERT CAMERON TAYLOR, Dentist, a citizen of the United States, residing
in Humansville, in the County of Polk, and State of Missouri, U.S.A., do hereby
declare the nature of this invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:
It is customary to secure artificial teeth to the base plate by means of pins
which are secured by baking the teeth around the pins. But it is much better and
casier to first form the tooth and then secure in place the pin or fastening device.
Heretofore difficulty has been experienced in securing a strong and secure
connection between the pin and the tooth, when thus fastened.
According to my present invention, the tooth is first formed with a recess, and a
fastening wire of suitable shape is seated in this recess and securely fastened therein.
The details of construction and the manner in which the fastening device is secured
to the tooth will be hereinafter more fully explained.
In the accompanying drawings,
Fig. 1 is a perspective view of a block of artificial teeth showing also my
improved fastening devices.
Fig. 2 is a transverse section of a tooth with one of my improved fastening
devices in position ready to be inserted in the recess in the tooth.
Fig. 3 is a similar view showing the fastening device inserted in the recess.
Fig. 4 is a similar view showing the fastening device seated and secured in the
recess.
I first form and bake the tooth A, which is provided with an undercut recess a,
in its rear face. The fastening device or wire B, is first formed with parallel sides b,
having headed ends, and a bent or curved bendable connecting brace 2. A
fastening device thus formed is shown in Fig. 2, ready to be inserted into the
recess a, which at its outer end is just wide enough to receive the wire B. In
Fig. 3, the wire B is shown in position in the recess a. When in this position, I
bend or straighten out the brace portion 62 by forcing inwardly with a suitable tool
applied to the central portion of the brace, by which means the brace 2, is flattened
or made straight, as shown in Fig. 4, which at the same time causes the inner ends
of the sides b, of the device to spread apart in opposite directions and rest against
the under-cut sides of the recess. The device B, is of such size and construction
as to cause the brace 2 and the lower ends of the sides 6 to fit snugly against the
bottom and opposite sides of the recess, as is clearly shown in Fig. 4.
That portion of the recess a, not occupied by the wire is filled in with suitable
material C.
This way of fastening the wire to the tooth is simple and secure.
It cannot be
withdrawn from the recess because the lower bent ends of the brace b, are inclined
in opposite directions, and rest against the inclined or undercut portions of the

page_text: recess.
The lower ends cannot be bent inwardly because they are held apart and
braced by the portion b³.
And now having particularly described: and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what I
claim is,
1. A fastening device for artificial teeth, formed with parallel sides, and a bent
up or curved brace extending inwardly between the sides, and adapted to be forced
outwardly to force the sides into the under-cut recess of an artificial tooth,
substantially as set forth.
2. The process, herein described, which, consists in forming an artificial tooth with
an under-cut recess, inserting into the recess a fastening device or wire having
parallel sides b, and a curved. or bent portion 6,, then flattening out the bent
portion, and then filling in, the recess. with, suitable material.
3. An artificial tooth having a fastening, device,, substantially such as shown and
described.
Dated this 5th day of June 1891.
ELBERT CAMERON TAYLOR.