A Platinum Fastening for Securing Artificial Teeth to Vulcanized or Metal Plates.
Year: 1892

page_text: Date of Application, 3rd Nov., 1892
Complete Specification Left, 3rd Aug., 1893-Accepted, 9th Sept., 1893
PROVISIONAL SPECIFICATION.
A Platinum Fastening for Securing Artificial Teeth to Vulcanized or
Metal Plates.
I, FRITZ ZIMMERMANN, of Luzern, in the Republic of Switzerland, Med.
Dentist, do hereby declare the nature of this invention to be as follows:-
Heretofore artificial teeth have been furnished with wires or studs having a smooth
surface, by means of which they were let into the vulcanite or palate plate and
retained therein by bending the respective ends of the wires or studs at right angle
or knoting the same. However such fastenings have failed to give sufficient
security for the artificial teeth to withstand the required resistance during the act
of mastication and render the same subject to frequent repairs.
This invention has therefore for its object to form platinum fastenings in such a
manner that they will have sufficient hold in the vulcanite or palate plate by using
studs with a rough surface, that is to say, studs furnished with suitable serrations or
notches which form barbs.
Fig. 1, in annexed drawing, is at an enlarged scale, a section through a part of
the palate plate with artificial teeth, showing the style of the latter.
Figs. 2 & 3 are cross sections through the artificial tooth, at the place, where the
studs are let in.
Fig. 4 is a view of a stud still more enlarged.
Figs. 5 & 6 are modifications thereof also considerably enlarged.
In Fig. 1, a is the artificial tooth which by means of two platinum studs b is set
into the palate plate c. Each platinum stud is roughened in a particular way, as
shown in Fig. 4, for instance suitably notched or filed to form barbs which insure
a secure hold the studs in the vulcanite or palate plate c. The said studs may
be round, (Figs. 2 & 4), triangular (Figs. 3 & 6), or square (Fig. 5) and the tooth
itself of any suitable form.
By means of this novel platinum stud the artificial tooth is held perfectly secure
in the vulcanite or palate plate so that it will be impossible for the tooth to give
way or become detached. In order to increase the resistance of these studs, they
may be bent a little to the right or left, a bending to a right angle being
These new
superfluous, which heretofore caused sharply ground teeth to break.
studs render the fitting of artificial teeth for the dentist much easier and quicker
owing to the same affording a better hold in the wax templet.
Dated this 2nd day of November 1892.
F. BOSSHARDT & Co.,
Agents to Applicant.
COMPLETE SPECIFICATION.
A Platinum Fastening for Securing Artificial Teeth to Vulcanized or
Metal Plates.
I, FRITZ ZIMMERMANN, of Luzern, in the Republic of Switzerland, Med.
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 :-
The fastenings, studs, or pins hitherto used in the manufacture of artificial teeth
and secured into the vulcanite or celluloid base consisted either of round smooth
platinum wire thickened at one or both ends or of twisted cornered wire without
thickened onde

page_text: All these studs or pins have the disadvantage of becoming gradually more or less
loose in their base (particularly those of the front top and bottom teeth) through
the act of mastication and the force exercised thereby (consisting of pressure and
rotation) and for instance when using twisted cornered wire on the rotation of the
tooth will screw out, become loose and thus entail repairs.
The only means hitherto used successfully to obviate the said defect is the
application of a metal support behind the teeth (plating) which takes up con-
siderable time and increases the cost of the teeth. In addition to this straight studs
or pins for flat teeth require bending laterally to give the same hold in the
vulcanite, which lessens the resistance of the studs or pins owing to being shortened
thereby. It is also well known that when bending the studs or pins the teeth often
break and are thus rendered useless
The whole of these defects are obviated by my improvements illustrated in the
drawings accompanying the Provisional Specification, in which ―
Fig. 1 is at an enlarged scale a section through a part of the palate plate with
artificial teeth, showing the method of fastening the latter.
Figs. 2 & 3 are cross sections through the artificial teeth at the place where the
studs or pins are let in.
Figs. 4, 5 & 6 are still more enlarged views of three modifications of the said
studs or pins.
My improved stud or pin b consists of a straight platinum wire either of round,
triangular, square, or other cornered section. In each case the platinum wire is
externally, or on its edges, provided with nicks or barbs, (see Figs. 4, 5 & 6) as
may be found most easy and cheap to make, the triangular or square section
however being deemed as preferable.
The described arrangement of stud or pin prevents it from being pulled out of
or turned in its base, (as is the case in twisted fastenings) and thus impossible to
get loose, which result hitherto has not been attained by any other stud or pin.
A further great advantage of the described stud or pin is that the same needs no
bending to get hold in the vulcanite c being held fast by the barbs. The stud or
pin not being shortened its resistance is considerably greater than that of a bent
stud or pin, which through bending is shortened half or more of its length. In
most cases the improved stud or pin retains its shape, however in exceptional cases
it may be slightly displaced laterally which is sufficient to give extra resistance.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim, is―
A stud or pin consisting of a straight platinum wire provided with nicks or
barbs, the points of which being directed against the tooth, and the stud or pin
being held on the one side in the artificial tooth, and the other side of this stud or
pin being destinated to be fixed in a plate of rubber or similar material, substan-
tially as set forth.
Dated this and do of A nonst 1902
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicant.