AN IMPROVED MODE OR IMPROVED MODES OF OPERATING IN DENTAL SURGERY AND IMPROVED APPARATUS OR INSTRUMENTS TO BE USED THEREIN
Year: 1848

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
GILBERT, of Saint Leonard's-on-the-Sea, in the County of Sussex, Surgeon,
send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing, date at Westminster, the Twentieth day of
April, One thousand eight hundred and forty-eight, in the eleventh year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Henry Gilbert, my exors, admors, and assigns, Her especial
licence, full power, sole privilege and authority, that I, the said Henry
Gilbert, my exors, adñiors, and assigns, or such others as I, the said Henry
Gilbert, my exors, admňors, or assigns, should at any time agree with, and no
others, from time to time and at all times during the term of years therein
expressed, should and lawfully might make, use, exercise, and vend, within
England, Wales, and the Town of Berwick-upon-Tweed, and in the Islands
of Jersey, Guernsey, Alderney, Sark, and Man, and in all Her said Majesty's
Colonies and Plantations abroad, my Invention of "AN IMPROVED MODE OR
IMPROVED MODES OF OPERATING IN DENTAL SURGERY, AND IMPROVED APPARATUS
OR INSTRUMENTS TO BE USED THEREIN;" in which said Letters Patent is con-.
tained a proviso that I, the said Henry Gilbert, should cause a particular
description of the nature of my said Invention, and the manner in which the'
same is to be performed, by an instrument in writing under, my hand and
seal, to be inrolled in Her said Majesty's High Court of Chancery within six
calendar months next and immediately after the date of the said in part
recited Letters Patent, as in and by the same, reference being thereunto had;
will more fully and at large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
Henry Gilbert, do hereby declare that the nature of my said Invention, and
'the manner in which the same is to be performed, are fully described and
ascertained in and by the following statement thereof, reference being had
to the Drawings hereunto annexed, and to the figures and letters marked 5
thereon, that is to say :—
thereon, what is to say :-
My Invention consists,―
First, of improvements in the means of extracting teeth; and,
Secondly, my Invention consists of improvements in apparatus for extracting
teeth.
And in order that my Invention may be most fully understood and readily
carried into effect, I will proceed to describe the means pursued by me.
:
DESCRIPTION OF THE DRAWINGS.
Figure 1 shews a front view, Figure 2 a side view, Figure 3 a plan of a
chair and apparatus arranged suitable for carrying out the first part of my
Invention, which consists of so arranging apparatus that a fixed bearing inde-
pendant of the extracting instrument may be offered to the forceps or instru-
ments used in extracting teeth; and I prefer that such apparatus and fixed
bearing should be applied to a chair, but that is not essential to this part of
my Invention, so long as a suitable fixed bearing is brought into a proper
position, as hereafter explained. The other Figures of the Drawings shew the
principal parts of the apparatus full size, and the same letters of reference are
used to indicate similar parts in all the Figures. a is a fixed stem on one
side of the chair. This stem is to carry the fixed bearing to support the
instruments when used in drawing out or extracting a tooth. 6 is a sliding
socket, which can be fixed by a set screw c, so as to suit the position of the
mouth of the person about to have a tooth extracted. d is the shape of fixed
bearing which I prefer to employ, but its shape may be varied. This fixed
bearing at one end enters the hollow socket e, and can be fixed in any required
position by the set screwf. The stem of the socket e is received into the socket
9, and it can be fixed in any position by the set screw h. By these arrange-
ments the fixed bearing d can (before being employed) be fixed securely in
the most convenient position for use. When the tooth to be extracted is a
front tooth, and the bearing cannot be introduced between the upper and under
teeth, I apply the sliding piece d', against which the teeth on one side beyond
the one to be extracted come when extracting a front tooth. The chair back
is hinged to the seat, and the back rests on a rail, so that by the seat coming
forward, the back may be made to recline into any required position, as is

page_text: well understood, similar chairs having been made before, and therefore the
same is not claimed by me. The Drawings shew the shape of the back of a
chair which I use. I prefer to employ ordinary forceps for extracting teeth,
such as are bent at right angles, being the most convenient for use; and the
operator having caused the person to recline back in the chair, and set the
instrument d so as to come between the jaws when not for a front tooth, as
before stated, takes hold of the tooth by the forceps, which instrument will
rest on the bearing d. He will then cause the forceps to move on the bear-
ing d, as on a fulcrum, by which the forceps will be caused to act as a lever
in lifting the tooth out of the lower jaw; and in case the tooth to be extracted
is in the upper jaw, then the forceps will come below the bearing d, and draw
the tooth downwards out of the jaw. The instrument
used is covered with any soft fabric or substance.
and also d' when
I will now describe the second part of my Invention. Figures 4, 5, and 6,
shew an improved instrument particularly intended for drawing out the stumps
of teeth. It consists of a fixed and moveable claw, one to go on either side of
the stump of a tooth. The moveable claw is to be pressed on by a finger or
thumb of the operator; and the stump of a tooth being thus held between the
two claws and the stem of the instrument resting on a fixed fulcrum, as
described in respect to the first part of my Invention, the operator will readily
extract the stump. Where the stump is such as to require it, the gum
is to
be lanced to allow of the claws descending to take hold. I would remark
that this instrument is very similar, in respect to the moveable claw, to what
has before been used, and is commonly called the key instrument; but in
such former instrument there was no fixed claw used in such manner as to
hold the stump of a tooth between two claws as in the present instrument.
Having thus described the nature of my Invention, and the manner in
which the same is to be performed, I would have it understood that I do
not confine myself to the details as herein shewn and described; but what I
claim is,
First, the improvements herein described for extracting teeth, whereby a
fixed bearing is employed to rest the extracting instrument on or against, as
explained; and,
Secondly, I claim the improved instrument or apparatus herein described.
In witness whereof, I, the said Henry Gilbert, have hereunto set my
hand and seal, this Eighteenth day of October, in the year of our
Lord One thousand eight hundred and forty-eight.
HENRY (Ls.) GILBERT.

page_text: AND BE IT REMEMBERED, that on the Eighteenth day of October, in
the year of our Lord 1848, the aforesaid Henry Gilbert came before our said
Lady the Queen in Her Chancery, and acknowledged the Specification afore-
said, and all and every thing therein contained and specified, in form above
written. And also the Specification aforesaid was stamped according to the
tenor of the Statute made for that purpose.
Enrolled the Twentieth day of October, in the year of our Lord One
thousand eight hundred and forty-eight.