Improvements in Materials or Compounds adapted for Use as Varnishes, as Substitutes for Indian Rubber, Gutta Percha, and like Substances, and for other purposes, and the Process for their Production.
Year: 1893

page_text: Date of Application, 22nd Dec., 1893
Complete Specification Left, 24th Sept., 1894-Accepted, 22nd Dec., 1894
PROVISIONAL SPECIFICATION
Improvements in Materials or Compounds adapted for Use as
Varnishes, as Substitutes for Indian Rubber, Gutta Percha, and
like Substances, and for other purposes, and the Process for
their 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 materials or compounds, to be used as.
substitutes for india rubber, gutta percha and other like substances, as varnishes
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 materials or compounds are produced, consists.
first, in the preparation of a solvent, obtained by distilling methylated spirit, which
has been treated with quicklime, potassium carbonate or other suitable agent to
absorb or remove the water contained in the spirit, and then 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 hydrocarbon, preferably benzole, or by a combination of the said methylated
spirit, hydrocarbon and methylated ether.
Tungstate of soda is now added to the said solvent, and agitated or shaken and
then allowed to stand until the solvent has absorbed as much of the tungstate of
soda as it will take up.
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.
Finally, in certain cases, to the product thus obtained, we add castor oil, or
gum copal and 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 effect of the treatment of the solvent with tungstate of soda, is to render
the material or compound produced, proof against ignition by flame.
In place of, or in addition to the said tungstate of soda, alum or other substance
having a similar effect may be employed.
Dated this 21st day of December 1893.

page_text: COMPLETE SPECIFICATION.
Improvements in Materials or Compounds adapted for Use as
Varnishes, as Substitutes for Indian Rubber, Gutta Percha, and
like Substances, and for other purposes, and the Process for
their 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
performed, to be particularly described and ascertained in and by the following
statement:-
Our invention relates to the production of materials or compounds, to be used as
substitutes for Indian rubber, gutta percha, and other like substances, as varnishes
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 object of our invention is to effect an improvement in the invention for
which we made application for Letters Patent on August 18th, 1893, No. 15686;
the said improvement consisting in a means of rendering the materials or compounds
forming the subject of the said application, proof against ignition by flame.
The process by which the said materials or compounds 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.
Tungstate of soda is now added to the said solvent and agitated or shaken, and
then allowed to stand until the solvent has absorbed as much of the tungstate of
soda as it will take up.
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 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 effect of the treatment of the solvent with tungstate of soda, is to render
the material or compound produced, proof against ignition by flame.
In place of, or in addition to the said tungstate of soda, alum or other substance
or substances, having a similar effect, may be employed.
The proportions of the different ingredients given herein, vary as will be
seen, within somewhat wide limits, the specific amounts being determined in

page_text: 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. In 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 the addition thereto of methylated ether, the combination with such
solvent of tungstate of soda, substantially as and for the purpose described.
2. In 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, the combination with such solvent of
tungstate of soda, substantially as and for the purpose described.
3. In 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 the addition thereto of a hydrocarbon and methylated ether, the combination
with such solvent of tungstate of soda, substantially as and for the purpose
described.
4. In the process set forth in any one of the preceding claims, the substitution
for tungstate of soda, or the addition thereto, of alum or other substance or
substances having a similar effect, substantially as and for the purpose described.
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 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.
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, 3 or 4, 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.
7. 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, 3 or 4, 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.
8. As a new article of manufacture, a material or compound, prepared in
accordance with any one of the forms of the process set forth and possessing the
characteristics herein described.
Dated thin oond doof Qontember 1804
AMBROSE MYALL,
2, Lancaster Place, Strand, London, W.C., Agent for the Applicants.