IMPROVEMENTS IN THE PREPARATION AND MANUFACTURE OF A COMPOUND FROM VEGETABLE MATERIALS SUITABLE FOR ELECTRO NON-CONDUCTORS AND INSULATORS APPLICABLE ALSO TO OTHER DURPOSES
Year: 1883

page_text: LETTERS PATENT to Edward Charles Théodore Blake of Brixton in the
County of Surrey for an Invention of "IMPROVEMENTS IN THE PREPARATION
AND MANUFACTURE OF A COMPOUND FROM VEGETABLE MATERIALS SUITABLE
FOR ELECTRO NON-CONDUCTORS AND INSULATORS APPLICABLE ALSO TO OTHER
DURPOSES"
PROVISIONAL SPECIFICATION left by the said Edward Charles Théodore
Blake at the Office of the Commissioners of Patents on the 23rd June 1883.
EDWARD CHARLES THÉODORE BLAKE of Brixton in the County of Surrey,
"IMPROVEMENTS IN THE PREPARATION AND MANUFACTURE OF A COMPOUND FROM
VEGETABLE MATERIALS SUITABLE FOR ELECTRO NON-CONDUCTORS AND INSULATORS
APPLICABLE ALSO TO OTHER USEFUL PURPOSES
"
This invention relates to improvements in the preparation and manufacture of
an improved compound from vegetable materials suitable for being used for electro
non-conductors and insulators such compound being applicable to other useful
purposes.
According to this invention in treating wood pulp and other waste vegetable
fibrous materials and converting the same into a compound suitable for making
boards blocks or other moulded forms as described in the first part of the
specification of Letters Patent granted to me and dated 22nd day of December 1880
N° 5380, I find it advantageous to use waste cork or cork shavings ground to a
fineness according to the use required and treated and mixed with the colloid of
fibrine of animal blood, or instead thereof with paste or other adhesive materials
(advantageously made of rye or rice flour) in the following proportions vis;
One third by weight or thereabout of ground waste cork and two thirds by
weight or thereabout of dry wood pulp or waste fibrous materials (advantageously
waste cocoa nut fibre) the same being treated according to the specification above
..מ

page_text: "
referred to and thoroughly mixed in the proportions stated and when in a thick
pulpy state put into moulds and kept under a continuously increasing pressure
until all the fluid or watery parts are entirely removed this being a most essential
feature thereby preventing the boards blocks or other forms from warping or being
distorted in the process of drying by artificial means or otherwise thus producing
articles of a shape adapted for electro non-conductors insulators or other useful
purposes.
When these improved boards blocks or other moulded forms are thoroughly dry
and are to be made acid and waterproof they are immersed in boiling linseed oil
or other waterproof material for twenty minutes more or less according to the
substance of the material to be treated then taken out and pressed and put into an
oven (fitted up for the purpose) and baked for three hours more or less the heat
being kept up to 212 degrees Fahrenheit (more or less) and when taken out
immersed. a second time in boiling linseed oil or other waterproof material for ten
minutes (more or less taken out pressed and dried.
I find that the materials for insulating and electro non-conducting purposes thus
treated have the following advantages vis;
By the process of baking the non-conducting and insulating compound is
rendered more homogeneous and hard and by being immersed a second time the
compound is rendered jet black and similar in appearance to ebonite and stands
greater heat than any insulating material at present known besides the mixture of
ground cork. renders the material considerably cheaper lighter and tenacious.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Edward Charles Théodore Blake in the Great Seal Patent Office on
the 22nd December 1883.
EDWARD CHARLES THÉODORE BLAKE of Brixton in the County of Surrey
"IMPROVEMENTS IN THE PREPARATION AND MANUFACTURE OF A COMPOUND FROM
VEGETABLE MATERIALS SUITABLE FOR ELECTRO NON-CONDUCTORS AND INSULATORS
APPLICABLE ALSO TO OTHER USEFUL PURPOSES
"
This invention relates to improvements in the preparation and manufacture
of an improved compound from vegetable materials suitable for being used for
electro non-conductors and insulators such compound being applicable to other
useful purposes.
According to this invention in treating wood pulp and other waste vegetable
fibrous materials (advantageously waste cocoa nut fibre) and converting the same
into a compound suitable for making boards blocks or other moulded forms as
described in the first part of the specification of Letters Patent granted to me and
dated 22nd day of December 1880 N° 5380. Now according to my present
improvements I find it advantageous to use waste cork or cork shavings ground to
a fineness according to the use required and treated and mixed with the colloid of
fibrine of animal blood or instead thereof with paste or other adhesive materials
(advantageously made of rye or rice flour) in the following proportions, vis,
One third by weight or thereabout of ground waste cork and two thirds by
weight or thereabout of dry wood pulp or waste fibrous materials (advantageously
waste cocoa nut fibre) the same being treated in the manner as described in the
specification above referred to and thoroughly mixed in the proportions state'l and
when in a thick pulpy state put into moulds and kept under a continuously
increasing pressure until all the fluid or watery parts are entirely removed this
being a most essential feature thereby preventing the boards blocks or other
moulded forms from warping or being distorted in the process of drying by
artificial means or otherwise thus producing articles of a shape adapted for electro
non-conductors insulators or other useful purposes.
When these improved boards blocks or other moulded forms are thoroughly dry
and are to be made waterproof and acid proof they are thoroughly saturated by
being immersed in boiling linseed oil or other waterproof material for twenty
minutes (more or less) according to the substance of the material to be treated then
taken out and pressed and put into an oven of suitable construction and baked
for three hours (more or less) the heat being kept up to 212 degrees Fahrenheit
(more or less) and when taken out immersed a second time in boiling linseed oil or
other waterproof material for ten minutes (more or less) taken out pressed and
baked for three hours (more or less) the heat being kept up at 212 degrees
Fahrenheit as before stated.
I find that the materials for insulating and for electro non-conductors and other
useful purposes thus treated have the following advantages, vis,
By the process of immersing the boards blocks or other moulded forms in boiling
linseed oil pressed and baked the compound is rendered more homogeneous and
hard and by being immersed a second time in boiling linseed oil and baked the
compound is rendered perfectly water proof and diluted acid proof and in
appearance similar to ebonite and when used for insulating purposes will stand
greater hent than any insulating material at present known, besides the mixture
of ground cork renders the material considerably cheaper lighter and tenacious.
In carrying out my invention from the nature treatment and substance of my

page_text: improved compound. I can manufacture out of the boards or blocks made as above
described, bosses used in spinning of flax (wet spinning) packing stufling boxes and
other like purposes, heels for boots or shoes, also discs or segments suitable for
filling up railway wheels and various other useful purposes.
Having thus described the nature of my invention and the manner of carrying
the same into practice I would remark that I do not claim any part of the
processes. hereinbefore described separately which are well known and in cominon
But what I claim is :-
usc
The inanufacture of an improved compound from vegetable fibrous materials by
treating wood pulp or waste vegetable fibrous materials (advantageously waste
cocoa nut fibre) and cork combined and converting the same into waterproof and
diluted neid proof boards blocks or other moulded forms suitable for electro non-
conductors and insulators and for various other articles of commercial value
substantially in the manner and for the purpose hereinbefore fully described.
In witness whereof I the said Edward Charles Théodore Blake have hereunto
set my hand and seal this Twenty first day of December in the year. of our Lord
One thousand eight hundred and eighty three.