Improvements in Impression-trays or Carriers for Dental Moulds.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Impression-trays or Carriers for Dental Moulds.
-
I, HENRY JAMES MILLER, of 16, Rue de la Monnaie, Paris, in the Republic of
France, Dentist, do hereby declare the nature of this invention to be as follows:-
Heretofore the impression-trays or carriers serving to receive the wax or plastic
material for obtaining an impression or cast of the mouth, have been formed with
smooth surfaces; from this it results that when the impression or cast has been
taken, the plastic material, not being retained in the impression-tray or carrier,
becomes partly and sometimes wholly detached, so that the impression or cast is
deformed. In certain cases, the operator is obliged to break the plastic material in
order to easily remove it from the mouth.
To obviate these disadvantages and obtain an impression without deformation,
I have devised an arrangement for enabling the material to be retained in the
impression-tray.
This arrangement will be well understood from the following description refer-
ence being made to the accompanying specimen drawing, in which:
Figure 1 is a plan of an impression-tray for the upper jaw.
Figure 2 is a longitudinal section on the line 1-2, Figure 1, and
Figure 3 a transverse section on the line 3-4, Figure 1.
Figure 4 is a plan of an impression-tray for the lower jaw.
Figure 5 is a longitudinal section on the line 5-6, Figure 4, and
Figure a transverse section on the line 7-8, Figure 4.
In these figures, like letters of reference indicate corresponding parts.
As shown in the drawing, the impression-tray a is provided along the whole
or part of its edges with a bead formed either by turning in the metal or by a
metallic band of any suitable section, secured in position by solder or in any other
suitable manner.
The plastic material can be retained in the impression-tray in any other suit-
able manner, for example, by points, projections, or corrugations, etc. suitably
arranged on the edges or internal walls, as well as at the bottom of the tray or
carrier.
These points, projections or corrugations, etc., can be applied to the tray or
carrier or produced by stamping or embossing the metal.
In the walls of the tray or carrier, apertures can be formed in which the plastic
or other material can engage.
In a word, I can employ any arrangement having for its purpose the retention
of the material in the impression-tray or mould-carrier.
Dated this 22nd day of November 1897.
D. YOUNG & Co.,
11 and 12, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Impression-trays or Carriers for Dental Moulds.
I, HENRY JAMES MILLER, of 16, Rue de la Monnaie, Paris, in the Republic of
France, 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:-
Heretofore the impression-trays or carriers serving to receive the wax or plastic
material for obtaining an impression or cast of the mouth, have been formed with
smooth surfaces; from this it results that when the impression or cast has been
taken, the plastic material, not being retained in the impression-tray or carrier,
becomes partly and sometimes wholly detached, so that the impression or cast is
deformed. In certain cases, the operator is obliged to break the plastic material in
order to easily remove it from the mouth.
To obviate these disadvantages and obtain an impression without deformation,
I have devised an arrangement for enabling the material to be retained in the
impression-tray.
This arrangement will be readily understood from the following description,
reference being made to the drawing filed with my Provisional Specification, in
which
Figure 1 is a plan of an impression-tray for the upper jaw.
Figure 2 is a longitudinal section on the line 1-2, Figure 1, and
Figure 3 a transverse section on the line 3-4, Figure 1.
Figure 4 is a plan of an impression-tray for the lower jaw.
Figure 5 is a longitudinal section on the line 5-6, Figure 4, and
Figure 6 a transverse section on the line 7-8, Figure 4.
In these figures, like letters of reference indicate corresponding parts.
As shown in the drawing, the impression-tray a is provided along the whole
or part of its edges with a bead b formed either by turning in the metal or by
providing a metallic band of any suitable section, secured in position by solder or
in any other suitable manner.
The plastic material can be retained in the impression-tray in any other suit-
able manner, for example, by points, projections, or corrugations, etc. suitably
arranged on the edges or internal walls, as well as at the bottom of the tray or
carrier.
These points, projections or corrugations, etc. can be applied or secured to the
tray or carrier, or produced by stamping or embossing the metal.
In the walls of the tray or carrier, apertures can be formed in which the plastic
or other material can engage.
In a word, I can employ any arrangement having for its purpose the retention
of the material in the impression-tray or mould-carrier.
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:-
The improvements in impression-trays or carriers for dental moulds, consisting in
the application of an arrangement for enabling the plastic or other material to be
retained in the impression-tray, substantially as hereinbefore described.
Dated the 20th day of August 1898.
D. YOUNG & Co.,
11 and 12, Southampton Buildings, London, W.C.,
Agents for the Applicant.