New Combination Plates for Upper or Lower Sets of Artificial Teeth.
Year: 1886

page_text: Date of Application, 16th Apr., 1886.
Complete Left, 10th Jan., 1887.
Complete Accepted, 22nd Mar., 1887.
New Combination Plates for Upper or Lower Sets of Artificial
Teeth.
1 JOHN SUGDEN CRAPPER D.D.S. P.A. L.D.S. Dental Surgeon of The White
House Hanley in the County of Stafford do hereby declare the nature of the said
invention for NEW COMBINATION PLATES FOR UPPER OR LOWER, SETS OF ARTIFICIAL
TEETH to be as follows:-
My said invention consists of Plates of Gold, Platinum or other metals stamped out
in such a manner as to be readily adapted to any palate and such metals being con-
ductors of heat, which vulcanite and others are not, by this arrangement the heat of
the oral cavity is transmitted through the plates to the Palatine arch. Thus the
disadvantages of vulcanite, celleloid & all materials of like description (which being
non-conductors of heat) are avoided.
These combination plates are made in various sizes and different forms to fit any
model.
My said invention consists also of plates of metal of whatever kind being corrugated
either on one or both sides, so that the materials worked in combination with the metal
will be held more securely.
The upper plates of my said invention are fluted or concave on the parts coming
next to the palate & as a matter of course are convex on the lingual side thereof, the
former acting like so many suction cavities to the palate & the latter giving to the
lingual side the natural feeling to the tongue. The whole plate is so constructed as to
give additional strength to the work apart from the acquistion of the heat of the oral
cavity which is equally distributed. If it should be desirable to augment the power of
suction beyond that produced by the cavities hereinbefore mentioned, vellum rubber
may be inserted in the form of a small disc either immediately past the termination of
the plate or in other parts of the palate as may be desired. This arrangement can also
be applied to lower pieces giving extra firmness and increased comfort to the wearer.
The soft metal forms may be used with great advantage oven where the base consists
only of vulcanite, celleloid or other like materials but in all upper cases where the
superior metals are used as combination plates it is absolutely necessary that the soft

page_text: metal shapes should be used in connection therewithas follows, viz :-place the soft
metal the convex side into the concave side or fluted spaces of the superior metal &
when so fixed it can be placed on the model and adapted to the shape thereof & packed
with vulcanite or other material in the usual manner. When vulcanized the soft
metal must be removed & will leave the superior plate with the concave or fluted side
perfectly clear giving a neatness and finish unattainable by any other means.
The lower plates of my said invention constructed of Gold or other superior metals
are so made as to be readily applied to any lower piece, & the combination of the plate
gives extra strength whether applied to vulcanite, thianite, celleloid, or other material
of like description.
The said lower pieces are struck up in such a manner as to be readily applied to
almost any lower pieces, & like the upper being struck up in steel dies gives a superior
finish & neatness to the work.
13.00
E. W. INGAMELLS,
Agent to the Applicant.

page_text: COMPLETE SPECIFICATION.
New Combination Plates for Upper or Lower Sets of Artificial
Teeth.
I JOHN SUGDEN CRAPPER D.D.S. L.D.S. Dental Surgeon of the White House
Hanley in the County of Stafford do hereby declare the nature of my invention for
NEW COMBINATION PLATES FOR UPPER OR LOWER SETS OF ARTIFICIAL TEETH and in
what manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
My invention consists of plates of Gold Platinum or other metals stamped out in
such a manner as to be readily adapted to any palate such metals being conductors of
heat, which Vulcanite and similar materials used as bases for artificial Teeth are not.
By this arrangement the palate is kept at an even temperature, thus avoiding the
disadvantages and discomforts of Vulcanite and other bases as now used. These com-
bination plates are made in various sizes and different forms to fit any model.
My said invention consists also of fluted or concave spaces on the parts
coming next to the palate and as a matter of course are convex on the lingual
side thereof, the former acting like so many suction cavities to the palate and the
latter giving to the lingual side the natural feeling to the tongue. The whole plate is
so constructed as to give additional strength to the work apart from the advantage of
the heat of the oral cavity being equally distributed.
This arrangement can also be applied to lower pieces, giving extra firmness and
increased comfort to the wearer.
The soft metal forms may be used with great advantage even where the base consists
of Vulcanite Celluloid or other like materials, but in all upper cases where the superior
metals are used as combination plates it is absolutely necessary that the soft metal
shapes should be used in connection therewith as follows:-namely, place the soft
metal the convex side into the concave side or fluted spaces of the superior metal and
when so fixed it can be placed on the model and adapted to the shape thereof, and
packed with vulcanite or other materials in the usual manner. Two pins are fastened
through the plate (one at each end) as shewn in figure One to hold it in the plaster
and thus prevent slipping while being packed either way.
When vulcanized the soft metal must be removed and will leave the superior plate
with the concave or fluted side perfectly clear, giving a neatness and finish unattainable
by any other means.
The lower plates of my said invention are so made as to be readily applied to any
lower piece, and the combination of the plate gives extra strength whether applied to
Vulcanite or other Vegetable bases and like the upper being struck up in steel dies
gives a superior finish and neatness to the work.

page_text: Figure 1 shews plate fitted to model before being packed with Vulcanite or other
material.
Figure 2 shews plate when complete.
Do. 3 shews plate for lower case.
Figure 4 shews lower plate when completed in Vulcanite or other material.
The margins of the plate for securing materials are shown on Fig. 1 between A & B.
Having now particularly described the nature of my said invention and in what
manner the same is to be used I declare that what I claim is,-
First a new or improved method of fixing either gold platinum or other metals
giving an uninterrupted surface of metal without Vulcanite or other material interven-
ing so that the nonconducting material is secured on the margins of the plate without
covering the whole of the palate and acting substantially as hereinbefore described
and illustrated in the accompanying Drawings.
Dated this Seventh day of January 1887
E. W. INGAMELLS,
20, Albion Place, Hanley, Staffordshire,
Agent for Applicant.