Improvements in Artificial Teeth or Tooth Crowns.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Artificial Teeth or Tooth Crowns.
I, HERMANN FRIEDLAND, of No. 21, Gutenbergsplatz, Mayence, in the Empire
of Germany, Dentist, do hereby declare the nature of this invention to be as
follows:-
This invention has for its object artificial tooth-crowns which are adapted to
be used for making complete artificial sets or rows of teeth or bridged teeth.
The actual tooth-crown is provided on both sides with a not too low strip of
metal, which is so let into the crown as to form with it a completely level surface.
The metal strips situated on both sides of the tooth-crown may be connected
together on the rear side by a bent piece or strip also let into the tooth crown.
When separate tooth-crowns are to be connected one with another, this is
effected by simply soldering together the adjacent lateral strips of adjacent tooth-
crowns until the desired number of tooth-crowns are connected one to another
in the desired form.
The separate tooth-crowns are well fitted to the jaw, and do not require to be
held thereon by palate plates or the like, but are screwed on the roots or stumps
of teeth or hooked fast to sound teeth.
The screwing of tooth-crowns to the roots or stumps of old teeth is however
already in itself known.
For this purpose a perforated tooth-crown is employed which is pushed over a
screwed pin soldered or let into the tooth root or stump in question, and drawn
tight from above by means of a small nut.
In the making of a closed set or row of teeth a hollow attachment crown is
arranged at both ends and in the middle, and the whole row of teeth is fastened
in the manner herein before described on the jaw by means of this fastening
crown.
If the bridging over of a sound tooth is to be effected this is done by connecting
the rear sides of the artificial tooth-crowns which are located on both sides of the
tooth to be bridged over by means of a bar right along the back of the sound
tooth. In this manner the most natural replacement of teeth in a defective row,
or of only some teeth in proximity to one another, may be effected by means of
these improved tooth-crowns and in the shortest possible time.
Dated this 2nd day of November 1899
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.

page_text: ACCalfeet or 100th crowns.
I, HERMANN FRIEDLAND, of No. 21, Gutenbergsplatz, Mayence, in the Empire
of Germany, 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:-
This invention has for its object artificial tooth-crowns which are adapted to
be used for making complete artificial sets or rows of teeth or bridged teeth.
In the accompanying drawings:
Fig. 1 is an elevation of a single tooth crown;
Fig. 2 a plan view of same
Fig. 3 a longitudinal section of a perforated tooth crown as intended to be
employed for screwing fast on the tooth stump;
Fig. 4 shows a plan view of a combination of several such tooth crowns into
a closed set of teeth and their method of attachment;
Fig. 5 shows the bridging over of a sound tooth.
As may be seen from these drawings the actual tooth-crown a is provided on
both sides with a not too low strip of metal 6 and 61 respectively, which is so let
into the crown as to form with it a completely level surface.
The metal strips b and b¹ situated on both sides of the tooth-crown may be con-
nected together on the rear side by a bent piece or strip c also let into the tooth
crown as shown in Fig. 2 in dotted lines.
When separate tooth-crowns are to be connected one with another as shown
in Fig. 3 this is effected by simply soldering together the adjacent lateral strips
of adjacent tooth-crowns until the desired number of tooth-crowns are connected
one to another in the desired form.
The separate tooth-crowns are well fitted to the jaw, and do not require to be
held thereon by palate plates or the like, but as may be seen in Figures 3 and 4
are screwed on the roots or stumps of teeth or hooked fast to sound teeth.
The screwing of tooth-crowns to the roots or stumps of old teeth is however
already in itself known.
For this purpose a perforated tooth-crown (see Fig. 3) is employed which is
pushed over a screwed pin soldered or let into the tooth root or stump in question,
and drawn tight from above by means of a small nut.
In the making of a closed set or row of teeth a hollow attachment crown is
arranged at both ends and in the middle, and the whole row of teeth is fastened
in the manner herein before described on the jaw by means of this fastening
crown.
If the bridging over of a sound tooth is to be effected, this is done as shown in
Fig. 5 by connecting the rear sides of the artificial tooth-crowns which are
located on both sides of the tooth to be bridged over by means of a bar d right
along the back of the sound tooth. In this manner the most natural replacement
of teeth in a defective row, or of only some teeth in proximity to one another,
may be effected by means of these improved teeth-crowns and in the shortest
possible time.
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 improvement in artificial teeth and tooth-crowns, which consists in metal

page_text: strips (66) being let in or attached to both sides of the teeth or tooth crowns in
such a way as to enable a direct lateral soldering to be effected while avoiding
intermediate spaces, substantially as herein before set forth.
Dated this 23rd day of July 1900.
W. P. THOMPSON & Co.,
. Of 6, Lord Street, Liverpool, Agents for the Applicant.