Improved Glass Mask for Administering Narcotics.
Year: 1893

page_text: COMPLETE SPECIFICATION.
Improved Glass Mask for Administering Narcotics.
I, WILLIAM VAJNA, of Kerepesi-út, 34, Budapest in the Kingdom of Hungary
in the Empire of Austria, Doctor of Medicine, 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 :-
Amongst the many apparatus and masks, which have been constructed for
administering narcotics, as, for instance, of wire, sheet metal, india rubber, celluloid,
silk etc. not one has proved itself thoroughly practical. The greatest defect in all
of them is that they are not transparent, and, consequently, the face of the patient
cannot be observed. Further, the materials at present used in making such
apparatus are very rapidly destroyed under the influence of the narcotine. There
are also many other weaknesses, which however, are all overcome by the present
invention which relates to a mask whose body is made of glass.
I will now describe my invention with reference to the accompanying drawing, in
which:-
Fig. 1 is a perspective view of the oval, conical glass body of the mask,
Fig. 2 is a perspective view of the mask ready for use
Fig. 3 an interior view, and
Fig. 4 a detail view.
a is an oval, conical body of pure transparent glass open at both ends, the larger
opening being adapted to the shape of the face and provided with a groove round
its outer edge. The said groove serves to secure a silk ligature or frill c (Figs. 2
& 3) which allows the mask to fit very closely on the face. The edge of the
smaller opening is provided with an encircling rim (d) serving to secure a flannel (e)
tightly stretched over such opening (Fig. 2). The end of the mask which fits
over the nose is provided with a small handle (f), preferably cast on the glass body.
If the narcosis be administered with brome-æthyl in order to have a greater
surface for attaining a more rapid & more powerful evaporation, a so called
evaporation-rose g (Fig. 4) consisting of a long ribbon having many folds and
rolled together into a spiral form, can be arranged on the inner side of the flannel e.
This rose g can be most easily attached by pins as shown in Fig. 2.
This mask is used in the ordinary way, the face being covered from the under
lip to the middle of the nose. In consequence of the sides of the mask being
transparent, the face of the patient can be observed should there be any convulsive
contraction or biting of the lips. Other irregularities and dangerous symptoms.
can likewise be immediately perceived and duly suppressed. Moreover the patient
is more under control and the narcotic is administered with greater security.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare, that what I
claim is :-
An improved mask for administering narcotics, characterized by an oval, conical
body (a) of transparent glass and provided with handle (f) flannel being stretched
over the smaller opening of said body, while the larger opening, which is adapted
to the shape of the face, is provided on its edge with a ligament or frill (c)
substantially as described and shown in the drawings.
Did thin with d... of A wowat 1902
J. C. CHAPMAN, C.P.A.,
70, Chancery Lane, London, W.C.,
Filing Agent.