IMPROVEMENTS IN DENTAL APPARATUS
Year: 1877

page_text: LETTERS PATENT to Franz Ochlecker, of Hamburg, Germany, for the Invention
of "IMPROVEMENTS IN DENTAL APPARATUS.”
the 1st Now 1070 and dated the 1st Donember 1877
PROVISIONAL SPECIFICATION left by the said Franz Oehlecker at the Office
of the Commissioners of Patents on the 1st December 1877.
FRANZ OEHLECKER, of Hamburg, Germany.
RATUS.
"
"IMPROVEMENTS IN DENTAL Appa-
My Invention relates to an improvement in the construction of articulators
employed for setting the teeth in the manufacture of artificial sets of teeth, and the
accompanying Drawings represent my Invention.
The moulds upon which the teeth of the upper and lower jaw are placed aro
fixed to the plates P and P' by means of plaster. The plate P can be thrown
over with the mould of the upper jaw thereto attached after having withdrawn the
pin A, or else it can be taken off altogether by drawing out the pin B, in order
that the setting of teeth in the one or the other mould can be effected con-
veniently, and that one of the moulds should not in this respect interfere with the
other.
Figure 1 shows a view of the articulator; and Figure 2, a plan of the same, the
upper plate P for the upper jaw being removed.
In order to obtain the necessary sure and precise setting of sets of teeth of the
upper and lower jaws in respect to each other in the manufacture of artificial sets
of teeth by means of the articulator, the latter is provided with a horizontal and a
vertical slide conjointly with a socket joint G, which slider and socket joint are to
be considered as new and as peculiar.
The separate motions can be effected by referring to the accompanying Drawings
as follows:-The vertical motion is eflected by turning the button D with its
pinion R, which latter elevates and lowers the slide on the rack. The horizontal
.

page_text: motions from right to left, and vice versa, is obtained by means of the screw E, and
backwards and forwards, and vice versa, by means of the screw F. All other
motions which might be desirable are effected by means of the socket joint G
The screw C and the small screws of the socket joint serve to fix the upper portion
of the apparatus. The scales arranged upon the horizontal and vertical slides serve
to control the motions.
It is evident from the foregoing that the articulator which I have invented com-
bines the ease and facility of obtaining every desirable motion with accuracy and
convenience of execution for manufacturing artificial sets of teeth.
The chief feature in this Invention is the horizontal and vertical slider, the 1
socket or spherical joint, the facility of removing the plate with the upper jaw
from the apparatus, and the control of the regular setting, in combination in an
articulator for the purpose of manufacturing artificial sots of teeth.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Franz Oeblecker in the Great Seal Patent Office on the 1st June
1878.
FRANZ OEHLECKER, of Hamburg, Germany. "IMPROVEMENTS IN DENTAL APPA-
RATUS."
My Invention relates to an improvement in the construction of articulators
employed for setting the teeth in the manufacture of artificial sets of teeth, and is
represented in the accompanying Drawing.
The moulds upon which the teeth of the upper and lower jaws are placed aro
fixed to the plates P and P' by means of plaster. The plate P can be thrown over
with the mould of the upper jaw attached thereto after having withdrawn the
pin A, or else it can be taken off altogether by drawing out the pins B in order
that the setting of the teeth in the one or the other mould can be effected con-
veniently, and that one of the moulds should not in this respect interfere with the
other.
Figure 1 shows a vertical section; Figure 2 shows a back view of the articulator,
and Figure 3 a plan of the same with the upper plate P for the upper jaw removed;
while Figure 4 represents the lower part in detail.
In order to obtain the necessary sure and precise setting of sets of teeth of the
upper and lower jaws in respect to each other in the manufacture of artificial sots
of teeth by means of the articulator, the latter is provided with a horizontal and a
vertical slide, conjointly with a socket joint G and a worm and wheel H, I, which
slide, socket joint, and worm and wheel I consider as new.
How the separate motions can be effected is seen by referring to the accom-
panying Drawing, as follows:-The vertical motion is effected by turning the
button D with its pinion R, which latter elevates and lowers the slide on the rack.
The horizontal motions which might be desirable are effected by means of the

page_text: socket joint G. The screw C and the small screws of the socket joint serve to fix
the upper portion of the apparatus. The scales arranged upon the horizontal and
vertical slides serve to gage the motions.
It is evident from the foregoing that the articulator which I have invented com-
bines the ease and facility of obtaining every desirable motion with accuracy and
convenience of execution for manufacturing artificial sets of teeth.
Having now described the nature of my said Invention and in what manner the
same is to be performed, I declare that I claim as my Invention,-
First. The combination of the horizontal and vertical slides, the socket joint G,
and the worm and wheel H, I, with the plates P and P¹ arranged to operate in the
manner and for the purpose substantially as set forth.
Secondly. The hinged plate P provided with pins B and A, in combination with
the sliding block, arranged and operating for the purpose herein described.
In witness whereof, I, the said Franz Oehlecker, have hereunto set my hand
and seal, this Twenty-seventh day of May, One thousand eight hundred and
seventy-eight.