An Apparatus for Dental Practice.
Year: 1898

page_text: Date of Application, 4th. Jan., 1898
Complete Specification Left, 3rd Sept., 1898-Accepted, 5th Nov., 1898
An Apparatus for Dental Practice.
I, JULIUS WEISS, of I, Singerstrasse 1, Vienna, Austria, do hereby declare the
nature of this invention to be as follows:-
This invention has for its object to provide an apparatus, whereby persons study-
ing dentistry are enabled to perform on teeth in a manner corresponding exactly
with the circumstances arising in actual practice and consists chiefly of two frames
which can be set at any desired relative angles and in which the teeth are fixed.
The apparatus consists of two frames cach formed with an arm having an eye
at its end, the said frames being shaped conform with the gums and its walls
slightly inclining towards each other.
The said frames by means of their eyes and a tightening bolt are rendered rotary
adjustable upon a support so that they can be set at any desired angle to each other.
For the purpose of retaining the said frames securely in their desired positions,.
the peripheries of their eyes are formed with recesses and a pin is adapted to
enter the same by being placed through holes formed, in the jaws of the said
support. The teeth are fixed into the said frames by removing both frames from.
their support, placing them with their smaller sides upon a board and filling up,
the bottom parts thereof with wax or glass cement.
The roots of natural teeth are then stuck more or less close together into the
said substance so that the same reach above the edge of the frames, after, which.
the remainder of the space in the frames is filled up with plaster of Paris.
After the said plaster has hardened the frames are turned, the aforesaid wax or
cement removed from the lower parts of the frames and the latter also filled up
with plaster of Paris.
The plaster of Paris together with the teeth are held secure in the said frames
by means of screws, screwed through the outer walls of the frames into the plaster
of Paris
If it is desired to remove the plaster of Paris and teeth therein, the said screws
are withdrawn and by a slight tap of the hammer against the frames the same is
loosened and caused to drop out.
According to a modification of my invention, for simple practice by young
students, the said frames may be formed straight and only one employed.
For the practice of advanced students, the cheeks of persons may be imitated.
by pieces stretched across the heads of the aforesaid screws.
Dated this 3rd day of January 1898
F. BOSSHARDT & Co.,
Agents to Applicant.

page_text: I, JULIUS WEISS, of I, Singerstrasse 1, Vienna, Austria, 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:-
This invention has for its object to provide an apparatus, whereby persons study-
ing dentistry are enabled to perform on teeth in a manner corresponding exactly
with the circumstances arising in actual practice and consists chiefly of two frames
which can be set at any desired relative angles and in which the teeth are fixed.
And in order that my invention may be more fully understood I have caused to
be appended hereunto one sheet of drawings marked with letters of reference
indicating like parts in the various figures.
Fig. 1 is a perspective view, Fig. 2 a detail and Fig. 3 a modification of one
form of my invention.
Referring to the figures generally, the apparatus consists of two frames a each
formed with an arm a having an eye at its end, the said frames being shaped
conform with the gums and its walls slightly inclining towards each other.
The said frames by means of their eyes and a tightening bolt b¹ are rendered
rotary adjustable upon a support c so that they can be set at any desired angle
to each other. For the purpose of retaining the said frames securely in their
desired positions, the peripheries of their eyes b are formed with recesses and a
pin 62 is adapted to enter the same by being placed through holes formed in the
jaws of the said support. The teeth are fixed into the frames a by removing both
frames from their support c, placing them with their smaller sides upon a board
and filling up the bottom parts thereof with wax or glass cement.
The roots of natural teeth are then stuck more or less close together into the
said substance so that the same reach above the edge of the frames, after which
the remainder of the space in the frames is filled up with plaster of Paris.
After the said plaster has hardened the frames are turned, the aforesaid wax or
cement removed from the lower parts of the frames and the latter also filled up
with plaster of Paris.
The plaster of Paris together with the teeth are held secure in the said frames
by means of screws a², screwed through the outer walls of the frames into the
plaster of Paris. If it is desired to remove the plaster of Paris and teeth therein,
the said screws are withdrawn and by a slight tap of the hammer against the
frames the same is loosened and caused to drop out.
According to a modification of my invention, see Fig. 3, for simple practice by
young students, the said frames may be formed straight and only one employed.
For the practice of advanced students, the cheeks of persons may be imitated
by pieces stretched across the heads of the screws a² at each side of the frames a,
as shown in dotted lines Fig. 1.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim, is:
An apparatus for dental practice, consisting chiefly of two frames a which are
jointly secured to a support c, c and capable of rotary adjustment to any desired

page_text: relative angle, the said frames serving for the reception of the teeth in plaster of
Paris and the latter being held secure in the said frames by screws which also
hold the aforesaid cheek pieces.
Dated this 2nd day of Cantonaln 1000
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicant.