Year: 1899

page_text: Date of Application, 26th Aug., 1899-Accepted, 30th Sept,, 1899
I, AUGUST FRIEDRICH WILHELM STEFFEN, of Deichstrasse 17, Cuxhaven, 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, and accompanying drawing,
that is to say:-
The forceps described below and illustrated in the accompanying drawing is
what is known as a bayonet forceps with curved but completely closing points,
by means of which entire teeth (with perfect crowns), teeth with partly broken
away or decayed crowns, or stumps or roots of teeth, can be drawn.
.
In the accompanying drawing, which is in illustration of the invention;
Figure 1 is a perspective view of the improved forceps,
Figure 2 is a top view of the same, and
Figuro 3 a front view of the forceps.
The neck of the tooth forms the principal surface gripped by the forceps, and
1s where the principal force for loosening the tooth is applied. The forceps hereto-
fore ordinarily used are frequently insufficiently effective, as on the one hand the
points of the forceps grip the crown, or what remains of the crown, of the tooth
too tightly, so that the latter is crushed, or on the other hand the points of the
forceps are bent too sharply together so that on gripping the tooth at the part
between the crown and the neck, the crown or what remains of it is broken off.
Moreover, for extracting stumps or roots, or where the crown is broken, what is
known as White's bayonet forceps can very seldom be effectively used, as, though
the points are closed, they diverge with a very small opening, so that one point
effects the necessary loosening, whilst the other point serves as a fulcrum for the
lever or handle, the supporting surface being so small that the point generally
slips off the root of the tooth. The improved forceps overcomes these difficulties,
as the points a are constructed according to the anatomical formation of the teeth,
inasmuch as the opening b on the edges, although the points are closed, allows an
easy upward movement of the alveolar substance of the tooth. At the same time
the points of the forceps at their full extension lie on the neck of the tooth, but
nevertheless leave sufficient space for the crown or what remains of it, so that
during the loosening of the tooth the pressure of the forceps on the neck of the
tooth is transmitted gently and uniformly to the crown, or the remainder of the
crown, as the curve of one of the forceps ends presses firmly against the neck
of the tooth under the crown, whilst the other end on account of its curved shape
ensures, whilst the tooth is being loosened, a sufficiently wide fulcrum for the
action of the lever, and therefore secures, by proper manipulation, a perfectly safe
extraction of the tooth.
The sharp bending of the ends of the forceps has for its object to provide a
free view during the extraction of wisdom teeth.

page_text: 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
Tooth-drawing forceps with strongly bent ends (a) and an opening (b) in front
on the edges, substantially as described and illustrated.
1000
EDWARDS AND CO.,
Chartered Patent Agents, 65 and 66, Chancery Lane, London,
Agents for the Applicant.