Improvements in the Preparation and Application of Coating and Insulating Materials for Medical and other Purposes.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements in the Preparation and Application of Coating and
Insulating Materials for Medical and other Purposes.
We,
HEINRICH HELBING of 63 Queen Victoria Street in the City of London,
Chemist, and GUSTAVE PERTSCH of La Société Chimique des Usines du Rhône.
anciennement Gilliard P. Monnet et Cartier of Lyons, France, Chemist, do hereby
declare the nature of this invention to be as follows:-
The object of this invention is the preparation and application of coating
solutions, which may beneficially be employed in medicine as a substitute for
adhesive plaisters and for collodion, traumaticin and the like and in the arts
for various technical purposes.
Methyl or ethyl chloride or mixtures of the same with or without the addition
of alcohol or ether possess the property of dissolving and holding in solution
various gums, resins, fatty matters, wax or gutta percha, nitro-cellulose and
similar substances; or mixtures of the same such as are used in the production
of collodion and traumaticin.
According to this invention use is made of the above mentioned properties of
methyl or ethyl chloride and a solution is made with either or both of them
(with or without the addition of alcohol or ether to facilitate solution) of any of
the above mentioned gummy or fatty materials, or a mixture of them in such a
proportion that on the evaporation of the volatile matter the residue will attain
the required degree of adhesiveness and suppleness or such other properties as
may be required or desirable when applied to the purpose for which it is intended.
This solution is placed with a considerable excess of methyl or ethyl chloride if
required in a receiver of glass or metal, having a suitable orifice which can be
hermetically sealed, at will, with a close fitting cap. When it is required to
make use of the solution the cap is removed, and the vessel inclined as may 'be
necessary; the heat of the hand holding the vessel or even of the surrounding
atmosphere if of the ordinary temperature of a room, then immediately causes
the ethyl or methyl chloride inside the receiver to begin to evaporate, this
evaporation causes internal pressure and the solution is thereby ejected through
the orifice in a fine jet or spray. By properly directing the orifice of the receiver
the solution can be distributed over the part required.
At ordinary temperatures the methyl or ethyl chloride in the ejected solution
will very rapidly evaporate, leaving the residue consisting of the aforesaid gummy
or fatty matter deposited in a uniform coat layer or varnish on the desired surface.
This invention is particularly useful in those cases where it is desired to form
a protecting coat to a wound or to healthy or diseased tissue and since the ethyl
or methyl chloride is a local anesthetic this mode of application will cause the

page_text: minimum of pain. If necessary iodoform or other soluble antiseptics may be
incorporated in the solution.
Dated this 16th day of November 1896.
J. C. MEWBURN & ELLIS,
55 and 56 Chancery Lane, London, Chartered Patent Agents.
Improvements in the Preparation and Application of Coating and
Insulating Materials for Medical and other Purposes.
We, HEINRICH HELBING of 63 Queen Victoria Street in the City of London,
Chemist, and GUSTAVE PERTSCH of La Société Chimique des Usines du Rhône
anciennement Gilliard P. Monnet et Cartier of Lyons, France, Chemist, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:
The object of this invention is the preparation and application of coating
solutions, which may beneficially be employed in medicine as a substitute for
adhesive plaisters and for collodion, traumaticin and the like and in the arts
for various technical purposes; for example in connecting and insulating electrical
wires.
Methyl or ethyl chloride or mixtures of the same with or without the addition
of alcohol or ether possess the property of dissolving and holding in solution
various gums, resins, fatty matters, wax or gutta percha, nitro-cellulose and
similar substances; or mixtures of the same such as are used in the production
of collodion and traumaticin.
According to this invention use is made of the above mentioned properties of
methyl or ethyl chloride and a solution is made with either or both of them
(with or without the addition of alcohol or ether to faiilitate solution) or any of
the above mentioned gummy or fatty materials, or a mixture of them in such a
proportion that on the evaporation of the volatile matter the residue will attain
the required degree of adhesiveness and suppleness or such other properties as
may be required or desirable when applied to the purpose for which it is intended.
This solution is placed with a considerable excess of methyl or ethyl chloride if
required in a receiver of glass or metal, having a suitable orifice which can be
hermetically sealed, at will, with a close fitting cap. When it is required to
make use of the solution the cap is removed, and the vessel inclined as may be
necessary; the heat of the hand holding the vessel or even of the surrounding
atmosphere if of the ordinary temperature of a room, then immediately causes
the ethyl or methyl chloride inside the receiver to begin to evaporate, this
evaporation causes internal pressure and the solution is thereby ejected through
the orifice in a fine jet or spray. By properly directing the orifice of the receiver
the solution can be distributed over the part required.
At ordinary temperatures the methyl or ethyl chloride in the ejected solution
will very rapidly evaporate, leaving the residue consisting of the aforesaid gummy
or fatty matter deposited in a uniform coat layer or varnish on the desired surface.
This invention is particularly useful in those cases where it is desired to form
a protecting coat to a wound or to healthy or diseased tissue and since the ethyl
or methyl chloride is a local anesthetic this mode of application will cause the
minimum of pain. If necessary iodoform or other soluble antiseptics may be
incorporated in the solution.
This invention should only be applied to substances which are soluble in ethyl

page_text: or methyl chloride adding to increase solubility alcohol or ether as will be well
understood by chemists.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that
what we claim is:-
1. The use of ethyl or methyl chloride as a solvent and carrier for the applica-
tion of resin, wax, gutta percha, nitro cellulose and other similar soluble substances,
as and for the purposes described.
2. The combination of ethyl or methyl chloride, with the addition of alcohol
or ether, with soluble resins, waxes, gutta percha, nitro cellulose and the like,
substantially as and for the purposes described.
3. As a new product, a liquid collodion, obtained by treating nitro-cellulose in
alcoholic ethereal solution with ethyl or methyl chloride.
4. As a new product, a liquid traumaticin, obtained by treating gutta percha
with ethyl or methyl chloride.
Dated this 19th dor of August 1897
J. C. MEWBURN & ELLIS,
55 and 56 Chancery Lane, London, Chartered Patent Agents.