An Improved Material or Compound adapted for Use as a Varnish, as a Substitute for India Rubber, Gutta Percha, and like Substances, and for other purposes, and the Process for its Production.
Year: 1893

page_text: Date of Application, 18th Aug., 1893
Complete Specification Left, 16th May, 1894-Accepted, 18th Aug., 1894
PROVISIONAL SPECIFICATION.
An Improved Material or Compound adapted for Use as a Varnish,
as a Substitute for India Rubber, Gutta Percha, and like
Substances, and for other purposes, and the Process for its
Production.
We, CHARLES UMFREVILLE KING, of 163 Bedford Hill, Balham, in the
County of Surrey, Civil Engineer, and RICHARD VINCENT JELLICOE, of
20 Madeira Road, Streatham, in the same county, Analytical Chemist, do hereby
declare the nature of this invention to be as follows:-
Our invention relates to the production of a material or compound to be used
as a substitute for india rubber, gutta percha, and other like substances, as a
varnish for waterproofing fabrics, or for capsuling or sealing bottles, or other
vessels, or for coating wires for electrical purposes, or insulating, and for the
construction of boxes or vessels to contain corrosive or deliquescent substances, or
for making films for photographic and other purposes.
Our invention consists in dissolving, in a solvent, prepared as hereinafter
described, cotton-wool, paper, esparto grass, or other suitable cellulose material,
rendered soluble by treatment with nitric and sulphuric acids and water, in the
well known manner, as applied to the manufacture of collodion cotton, or soluble
gun cotton.
The said solvent is prepared by distilling methylated spirit, which has been
treated with quick-lime, potassium carbonate, or other suitable agent to absorb or
remove the water contained in the spirit, and adding to the distillate a percentage
of methylated ether varying from 5 per cent. upwards, or, in place of the addition
of the said methylated ether, by distilling with the methylated spirit, a hydro-
carbon, preferably benzole, or by a combination of the said methylated spirit,
hydrocarbon and methylated ether.
To the cellulose fibre, when dissolved in the above solvent, we add castor oil,
or gum copal and castor oil, according to the flexibility required in the finished
material.
Dry pigments, or other suitable coloring matters may be added to the compound
when necessary.
COMPLETE SPECIFICATION.
An Improved Material or Compound adapted for Use as a Varnish,
as a Substitute for India Rubber, Gutta Percha, and like
Substances, and for other purposes, and the Process for its
Production.
We, CHARLES UMFREVILLE KING, of 163 Bedford Hill, Balham, in the
County of Surrey, Civil Engineer, and RICHARD VINCENT JELLICOE, of
20 Madeira Road, Streatham, in the same county, Analytical Chemist, do hereby
declare the nature of this invention and in what manner the same is to be
ID 7

page_text: performed to be particularly described and ascertained in and by the following
statement:-
Our invention relates to the production of a material or compound, to be used
as a substitute for india rubber, gutta percha and other like substances, as a
varnish for waterproofing fabrics, or for capsuling or sealing bottles, or other
vessels, or for coating wires for electrical purposes, or insulating, and for the
construction of boxes or vessels to contain corrosive or deliquescent substances, or
for making films for photographic and other purposes.
The process by which the said material or compound is produced, consists first,
in the preparation of a solvent, obtained by distilling methylated spirit, which has
been treated with quick lime, potassium carbonate or other suitable agent, to absorb
or remove the water contained in the spirit, and then adding to the distillate an
amount of methylated ether, varying from about 10 to 50 per cent., or, in place of
the addition of the said methylated ether, by distilling with the methylated spirit,
about 10 to 50 per cent. of a hydrocarbon, preferably benzole, or by a combination
of the said methylated spirit, hydrocarbon and methylated ether.
We now take cotton wool, cotton waste, paper, esparto grass, or other suitable
cellulose material, render it soluble by treatment with nitric and sulphuric acids
and water, in the well known manner as applied to the manufacture of collodion
cotton, or soluble gun-cotton, and then dissolve it in the solvent prepared as above
described. The proportion of the said soluble cellulose material to solvent may
vary from 5 to 10 per cent.
Finally, in certain cases, to the product thus obtained, we add from about 20 to
40 per cent. of castor oil, or from about 5 to 10 per cent. of gum copal and from
about 20 to 40 per cent. of castor oil, according to the flexibility required in the
finished material.
Dry pigments, or other suitable colouring matters may be added to the compound
when necessary.
The proportions of the different ingredients given herein, vary as will be seen,
within somewhat wide limits, the specific amounts being determined in each case
by the use to which the finished material is to be put, and the particular
characteristics required in it.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is
-
1. The herein described process for the preparation of a solvent, consisting in
the treatment of methylated spirit with quick lime, potassium carbonate, or other
suitable agent to remove the water therein, distillation of the spirit so treated,
and finally the addition thereto of methylated ether, substantially as and for the
purpose described.
2. The herein described process for the preparation of a solvent, consisting in
the treatment of methylated spirit with quick lime, potassium carbonate, or other
suitable agent to remove the water therein, and distillation of the spirit so treated
with a hydrocarbon, preferably benzole, substantially as and for the purpose
described.
3. The herein described process for the preparation of a solvent, consisting in
the treatment of methylated spirit with quick lime, potassium carbonate, or other
suitable agent to remove the water therein, distillation of the spirit so treated,
and finally the coinbination therewith of a hydrocarbon and methylated ether,
substantially as and for the purpose described.
4. The herein described process for the production of a material or compound,
consisting in the preparation of a solvent in accordance with either one of the
preceding claims, and the solution therein of suitable cellulose material, rendered
soluble by treatment with nitric and sulphuric acids and water, substantially as
and for the purposes described.

page_text: 5. The herein described process for the production of a material or compound,
consisting in the preparation of a solvent in accordance with either one of
Claims 1, 2 or 3, and the solution therein of suitable cellulose material, rendered
soluble by treatment with nitric and sulphuric acids and water and the addition
thereto of castor oil, or gum copal and castor oil, substantially as and for the
purposes described.
6. The herein described process for the production of a material or compound,
consisting in the preparation of a solvent in accordance with either one of
Claims 1, 2 or 3, and the solution therein of suitable cellulose material, rendered
soluble by treatment with nitric and sulphuric acids and water, and the addition
thereto of suitable colouring matters, substantially as and for the purposes
described.
7. As a new article of manufacture, a material or compound, prepared in accord-
ance with any one of the processes set forth and possessing the characteristics
berein described.
Dated this 16th day of May 1894
AMBROSE MYALL,
2, Lancaster Place, London, W.C., Agent for the Applicants.