IMPROVEMENTS IN APPARATUS USED IN THE PRODUCTION OF " PROVISIONAL SPECIFICATION ION OF ARTIFICIAL TEETH KNOWN AS DENTAL ARTICULATORS
Year: 1872

page_text: LETTERS PATENT to Ralph Graham and Maurice Dale Wood, of
Stockton-on-Tees, in the County of Durham, Dentists, for the
Invention of "IMPROVEMENTS IN APPARATUS USED IN THE PRODUCTION OF
"
PROVISIONAL SPECIFICATION left by the said Ralph Graham and
Maurice Dale Wood at the Office of the Commissioners of Patents,
with their Petition, on the 16th February 1872.
We, RALPH GRAHAM and MAURICE DALE WOOD, of Stockton-on-
Tees, in the County of Durham, Dentists, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN APPARATUS USED IN THE
PRODUCTION OF ARTIFICIAL TEETH KNOWN AS DENTAL ARTICULATORS," to be as
follows:-
Our Invention consists of improved arrangements of construction for
the apparatus known as "dental articulating frames." We use a frame
of brass or other suitable material, an illustrative example whereof is

page_text: shown in the annexed Drawing. To the parts marked A. the parts C are
connected, free to be removed after the models have been fitted to the
frame, so that the upper and lower models can be removed at pleasure
during the process of fitting and arranging teeth, and be replaced by
other models when occasion requires it. Thus only one articulator is
required for any number of models, instead of the models being fixed as
is now the case with other articulators, each articulating frame not being
available for more than one set of models at one time. The part
marked B, B, is an arrangement of a slide rest at back in conjunction
with a disc attached to the upper part of frame supporting it at any
angle required.
Particular points of our Invention are the arrangements of construction
of the articulating frame as described to facilitate the removal of the
models during manipulation, and fixing it at any angle as shown. But
we do not confine ourselves to the particular form shown, but reserve the
right to make use of any other form substantially similar.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Ralph Graham and Maurice Dale Wood in the
Great Seal Patent Office on the 16th August 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, RALPH
GRAHAM and MAURICE DALE WOOD, of Stockton-on-Tees, in the County
of Durham, Dentists, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Sixteenth day of February, in the year
of our Lord One thousand eight hundred and seventy-two, in the thirty-
fifth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto us, the said Ralph Graham and Maurice Dale Wood,
Her special licence that we, the said Ralph Graham and Maurice
Dale Wood, our executors, administrators, and assigns, or such others
as we, the said Ralph Graham and Maurice Dale Wood, our
executors, administrators, and assigns, should at any time agree with,
and no others, from time to time and at all times thereafter during
the term therein expressed, should and lawfully might make, use,

page_text: exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN APPARATUS USED IN THE PRODUCTION OF ARTIFICIAL TEETH
KNOWN AS DENTAL ARTICULATORS," upon the condition (amongst others)
that we, the said Ralph Graham and Maurice Dale Wood, our executors
or administrators, by an instrument in writing under our, or their,
or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Ralph Graham and Maurice Dale
Wood, do hereby declare the nature of our said Invention, and in what
manner the same is to be performed, to be particularly described and
ascertained in and by the following statement, reference being had to
the Drawings accompanying this Specification :-
Our Invention consists of improved arrangements of construction for
the apparatus known as dental articulators or dental articulating frames.
These arrangements consist in the adoption of a frame of brass or other
suitable material, an illustrative example whereof is shown in the
annexed Drawings. To the parts marked A the parts E are connected,
free to be removed, after the models have been fitted to the frame, so
that the upper and lower models can be removed at pleasure during the
process of fitting and arranging teeth, and be replaced by other models
when occasion requires it. Thus only one articulator is required for any
number of models, instead of the models being fixed as is now the case
with other articulators; each articulating frame or articulator not being
available for more than one set of models at one time according to the
old construction. The parts marked B and b constitute an arrangement
of a slide rest at back, in conjunction with a disc attached to the upper
part of the frame supporting it at any angle required, and allowing the
instrument to be graduated for regulating the amount of opening of the
articulating frames as may be requisite.

page_text: A, frame; B, slide rest which can be moved up and down the slot C;
it is fixed and regulated by means of the screw knob b, as shown. D is
the disc attached to upper frame, which in conjunction with the slide
rest B supports the models at any angle required. This disc can have
a scale marked on it so as to facilitate its use as a means of regulating
the angle of work. E are small spindles (shown only in Fig. 1) herein-
before referred to, placed (free to be removed) at the end of the frame as
shown, and are for the purpose of facilitating the placing of the models
on the frames.
Having now particularly described and ascertained the nature and
object of our Invention, and in what manner the same may be performed
or put in practice, we hereby declare that we claim, the Invention of
Improvements in Apparatus used in the Production of Artificial Teeth
known as Dental Articulators," the following being particular and
important points of the said Invention:-The arrangements of con-
struction of the articulating frame or articulators as described for
facilitating the removal of the models during manipulation, and for
fixing the same at any angle as herein exemplified; but we do not
confine ourselves to the particular form shown, but reserve the right to
make use of any other form substantially similar.
In witness whereof, we, the said Ralph Graham and Maurice Dale
Wood, have hereunto set our hands and seals, this Thirteenth day
of August, in the year of our Lord One thousand eight hundred
and seventy-two.
Witness,
N. HUNTER,
Station Street,
South Stockton.
RALPH GRAHAM.
(L.S.)
MAURICE DALE WOOD. (L.S.)