IMPROVEMENTS IN THE MEANS OF FIXING ARTI- FICIAL TEETH
Year: 1852

page_text: LETTERS PATENT to Bendix Ising Jacoby, of Hamburg, Dentist,
for the Invention of "IMPROVEMENTS IN THE MEANS OF FIXING ARTI-
FICIAL TEETH."
Sealed the 17th January 1853, and dated the 4th October 1852.
PROVISIONAL SPECIFICATION left by the said Bendix Ising Jacoby
at the Office of the Commissioners of Patents, with his Petition, on
the 4th October 1852.
I, BENDIX ISING JACOBY, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN THE MEANS OF FIXING ARTIFICIAL TEETH"
to be as follows:-
It consists of an improved mode of fixing artificial teeth by means
of a false palate or plate fitted to the roof of the mouth with one or
more air chambers, so that by adhesion & air pressure it is kept in its
place, to which plate the false teeth are attached, so arranged as to fit
in at the required spaces without the necessity of any ligature, pins, or
springs. An impression of the mouth is taken as far as the region of
the soft palate, and the plate to be, made must be carefully fitted in.
The pressure of the air is obtained by one or more air chambers, the

page_text: number, size, and depth of which must be left to the judgment of the
dentist.
The sketch annexed to this description shows such a plate with one
chamber only, as no two plates would be exactly similar as to form or
the number of air chambers, which must accord with the size of a
person's jaw.
The plates or palates may be made of gold or platina; but whalebone
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Bendix Ising Jacoby in the. Great Seal Patent
Office, on the 2nd April 1853.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
BENDIX ISING JACOBY, of Hamburg, Dentist, send greeting."
WHEREAS Her present most Excellent Majesty Queen Victoria, by
Her Letters Patent, bearing date the Fourth day of October, in the year
of our Lord One thousand cight hundred and fifty-two, in the six-
'teenth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Bendix Ising Jacoby, Her special
licence that I, the said Bendix Ising Jacoby, my executors, administra-
tors, and assigns, or such others as I; the said Bendix Ising Jacoby,
my 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, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN FIXING ARTIFICIAL TEETH," upon the condition
(amongst others) that I, the said Bendix. Ising Jacoby, by an
instrument in writing under my hand and seal, 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.

page_text: declare the nature of the said Invention, and in what manner the sanie
is to be performed, to be particularly described and ascertained in and
by the following statement thereof (that is to say):
The nature of my said Invention, which has already been generally.
described in my Provisional Specification, bearing date the Fourth day
of October, One thousand eight hundred and fifty-two, consists in the
use and application to the mouth of a metal plate, to which are to be
affixed artificial teeth. The plate is formed with one or more recesses
or air chambers for the purpose of causing adhesion of said plate by the
wearer exhausting the air contained in such said chamber or chambers
by suction as he places the plate in his mouth, the effect of which will
be, that said plate will be forcibly pressed upwards by reason of the
pressure of the air on the outer and under surface only of said plate
consequent upon the partial vacuum produce in the chamber or cham-
bers in the manner above stated... And the object. and intention of my
said Invention is to dispense with the use of the legatures, pins, rings,
braces, and springs hitherto employed by mechanical dentists to retain
artificial teeth in their proper position; and, further, by this Invention
to promote-a, quick and plain pronunciation, and prevent the adhesion
of food round said air chamber or chambers- during the process of
mastication, and generally, to facilitate the swallowing of food by
making the plate ofa sloping form.. And in order to explain my
said, Invention more completely I will now proceed to describe more
minutely in this my Complete Specification the details necessary for
carrying my said Invention into practical effect, and also the best means
I am acquainted with for that purpose,. reference being had to the
illustrative Drawing hereunto-annexed, and to the numeral figures
and letters of reference marked thereon; as follows:-
DESCRIPTION OF THE. DRAWING..
Figure 1, exhibits a plan view of that part of the before-mentioned
plate which is intended to be in contact with the roof. of the mouth.
Figure 2, is a side elevation of said plate with teeth aflixed thereto.
a, a, marks, the metal plate; b, a chamber or recess formed therein;
cc, artificial teeth. To construct this plate the operator first takes an

page_text: impression or cast of the form of the mouth to be fitted as far as the
region of the soft palate, and, making the metal plate of corresponding
shape to said cast, fits the plate into the mouth, first preparing the
mouth and putting it in a sound state to receive the same. And
would remark, that the metal of which the plate is formed should no
be two elastic, and the edges thereof should also be strengthened by
making them thicker than the other part of the plate to prevent such
part cutting the mouth, and those parts of the plate which press too
hard upon the mouth may be filed down or otherwise removed to give
ease at such parts. These plates may be formed of gold or platinum,
and in some instances whalebone or other similar material may be
employed; in either case I propose to attach and connect the artificial
teeth to the plate by rivetting thereto the pin to which the tooth is
affixed, holes being drilled or punched in said plate for the purpose of
such connection. I would further remark, that it will be found desi-
rable in practice to make the said plate of such size as to enclose, as
nearly as may be, the toothless portions of the jaw; and for such per-
sons as possess a more than ordinary flow of saliva the plate should not
be carried so near to the soft palate as for those persons whose pituitary
glands are not so easily affected. And, further, the said plate, instead
of having only one recess or air chamber, may be formed with several
chambers; this, however, as also the disposition of such said air
chambers, will vary according to circumstances, and must be constructed
according thereto, and the judgment of the dentist employed; and,
further, instead of aflixing artificial teeth to the plate a, before men-
tioned, natural teeth may be affixed thereto in the manner and by the
means before stated, and artificial gums made of enamel or colored
bone can also be made use of. The Drawing exhibits the plate a, as
constructed to attach teeth thereto at certain parts marked *,*, those
parts marked, being intended to pass clear of and behind the teeth in
the
gums of the mouth.
Having now described the nature of my said Invention, and in what
manner the same is to be and may be performed, I claim the attaching
of natural or artificial teeth to a plate by forming-the-same with one
or-more-recesses or air chambers, so that when the air contained therein 3

page_text: is exhausted the plate will be kept in forced contact with the mouth by
atmospheric pressure, as hercin-before particularly described, set forth,
and represented by the Drawing hereunto annexed.
In witness whereof, I, the said Bendix Ising Jacoby, have here-
unto set my hand and seal, this Seventeenth day of March, in
the year of our Lord One thousand eight hundred and fifty-
three.
Witness,
THOMAS P. BOYES,
Hamburg.
BENDIX ISING JACOBY. (L.S.)