An Improved Articulator or Apparatus for Holding in Position Models Used in Dentistry during the Building Up or Making of Sets of Artificial Teeth.
Year: 1888

page_text: Date of Application, 5th Mar., 1883
Specification Accepted, 8th June, 1888
An Improved Articulator or Apparatus for Holding in Position
Models Used in Dentistry during the Building Up or Making of
Sets of Artificial Teeth.
I JOHN LOUIS PIGOT LEMAN of 18 Claremont Road Surbiton in the County of
Surrey Dentist, do hereby declare the nature of my said invention and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement:
:-
The object of my invention is to effect improvements in the method of arranging,
adjusting, setting up and manipulating artificial teeth and in apparatus for effecting
the same.
And in order that my said invention may be particularly described and ascertained
reference is hereby made to the accompanying drawings in which similar letters of
reference indicate corresponding parts.
Fig. 1 is a plan view of a metallic frame and Fig. 2 is a side view of the same.
Fig. 3 is a plan view shewing the sliding plates c c placed upon the frame a.
Fig. 4 is a plan view shewing the plaster bases cast upon the plates c c for receiving
the models.
Fig. 5 is a section on the line x y of Fig. 4.
Fig. 6 is a back view of the frame with the models held in position of adjustment.
The sliding plates c c are united to the frame a by means of slides d d (Fig. 6).
The plates c c have turnbuckles e e for holding the plaster bases ff to the plates.
The plate is capable of sliding in the frame a.
When preparing the apparatus for use I place the plate in the middle position
as shewn in Fig. 3. The plates c c are then placed close together, as shown in
Fig. 4. 5. and 6. Wet plaster of Paris is then poured thereon for setting the models
in position. The models of the mouth having now been fixed upon the plaster
bases ff when the plaster has set, the plate b is moved away to the position shown
in Fig. 5. The plaster is then cut away from the centre opening (previously covered
by the plate b) thus allowing the position of the artificial teeth to be early seen
from the back, through the opening g, as shewn in Fig. 6, the turnbuckles holding
the plaster bases ff to the plates c c as shown in Fig. 4.

page_text: The plates c c may be moved upon the frame a in such a manner as to adjust
and manipulate the artificial teeth to the greatest nicety.
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 :-
1. The combination of the frame a with the sliding plates b and c c, slides d
and turnbuckles e e substantially as and for the purposes hereinbefore described and
shewn on the drawings.
2. The arrangements for and method of mounting plaster bases for holding the
plaster models used in dentistry, for the setting up artificial teeth in such a
manner as to provide an opening g for viewing the teeth from the back substan-
tially as hereinbefore described and shown on the drawings.
3. The general arrangement, construction and combination of the several and
respective parts together constituting my invention of an improved articulator, or
apparatus for holding in position models used in dentistry during the building up
or making of sets of artificial teeth substantially as hereinbefore described and shewn
on the drawings.