Improvements in and relating to Method of and Means for Making Dental Suction Plates.
Year: 1894

page_text: Date of Application, 4th Sept., 1894-Accepted, 6th Oct., 1894
COMPLETE SPECIFICATION.
Improvements in and relating to Method of and Means for Making
Dental Suction Plates.
I, JOSEPH SPYER, a citizen of the United States of America, residing at
3 Calle de la Palma, in the City of Mexico, Republic of Mexico, Dentist, 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:-
This invention relates to an improved method of and means for making dental
suction plates, the object being to construct a plate which shall have a suction
device extending its entire length.
My invention therefore consists in providing the means for making said plate
and also the method of making the same, as other means might be employed for
carrying out my method, hereinafter fully described.
In the drawings hereto annexed-
Figure 1 is a view of a plate constructed in accordance with my invention;
Figure 2 is a view of the form; and Figure 3 shows the method of using the
same.
In constructing plates in accordance with my invention I employ a thin metallic
form A, which is shaped to approximately fit the plate or plastic model, said form
being preferably constructed of sheet block tin so that it can be readily pressed to
fit the plate or model.
Two parallel slots or openings a a are made in the form A, said slots extending
from end to end of the form, which is essentially U-shaped, and it will be noticed
that these slots are near the opposite edges of said form.
In practice the form is secured to the plaster model B and then a spatula or
other sharp instrument is inserted in the slots or openings a and passed along their
entire length, thus forming the parallel grooves bb in the plaster model. These
grooves are then packed with hard or soft rubber passed also through the slots a,
and the case is then packed in the usual manner and the plate vulcanized, and upon
completing the plate it will be seen that along the edges of its upper surface
are formed the parallel ridges c which provide a suction device from end to
end of said plate but only at the outer edges, thus leaving the sense of taste
unimpaired.
By this method and means a very narrow plate can be employed.
Any suitable metal may be employed in constructing the form, but I have found
block tin to answer very well, as it can be made to conform to the shape of the
model.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
clam 18:-
1. The method herein described, which consists in making a groove or grooves
in the plaster model, filling said groove or grooves with rubber, and then vulcanizing
the plate upon said model to join the said filling in the grooves, substantially as
shown and described.
2. The method herein described, which consists in placing a slotted form plate
upon the plaster model, making grooves in said model by passing an instrument
around in the slots in the form or plate, filling the grooves so made with
rubber, packing the case and uniting the plate and rubber filling, substantially as
described.

page_text: 3. The form herein described, consisting of a thin metallic sheet of the desired
shape and having slots or openings extending from end to end near its edges,
substantially as shown and described.
Dated this 4th day of September 1894.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.