Improvements in the Process of Extracting Deleterious Matters from Wool and other Textile Materials.
Year: 1892

page_text: Date of Application, 6th Jan., 1892
Complete Specification Left, 28th Apr., 1892-Accepted, 28th May, 1892
PROVISIONAL SPECIFICATION.
Improvements in the Process of Extracting Deleterious Matters from
Wool and other Textile Materials.
I, CHARLES HANSON of Ings Road Wakefield, Oil Merchant do hereby declare
the nature of this invention to be as follows:
―
The process now adopted for extracting cotton, burrs and other obnoxious
fibrous and vegetable matters from wool and rags to render it fit for manufacture is
by immersion in tanks containing cold water and sulphuric or other acids combined,
but this process does not adequately answer the desired purposes of extracting the
useless matters and fails to thoroughly cleanse the wool, and also gives it a harsh
feel. Now I propose to remedy these defects by heating the water to a temperature
of 100° Fahrenheit or upwards as may seem most preferable according to the work
in hand and then adding the acids after this is done which I can carry out without
the danger which has always been considered to attach to any mixture of acids with
heated water. In some cases the acid or acids will be added before the henting is
done. Now this heating of the water to mix with the acid will not only remedy
the above named defects but will cause a great reduction in the amount of acid
which is now used with cold water. It has the advantages of making the wool
handle much softer and gives it a decidedly better color. In the case of wool or
other materials passed through this process, there is effected a great saving in soaps
and alkalies used in the scouring processes, as my method thoroughly extracts all
deleterious matters from it.
I claim to apply my improvement to the extracting and carbonising processes of
all kinds of manufacture of shoddy mungo and any other kind of fabrics or textile
materials.
: .ני.
Tour 1000
H. P. DAWSON,
Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in the Process of Extracting Deleterious Matters from
Wool and other Textile Materials.
I CHARLES HANSON of Ings Road, Wakefield, Oil Merchant, 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 :-
The process now adopted for extracting cotton, burrs and other obnoxious fibrous
and vegetable matters from wool and rags to render either of them fit for
manufacture is by means of immersion in tanks containing cold water and sulphuric
or other acids combined, but it does not adequately answer the desired purpose, as
it fails to thoroughly cleanse the wool and leaves it in such a condition that it has
a harsh feel.
Now I propose to remedy these defects by mixing water and sulphuric or other
acids in certain proportions in the tank or tanks now in use and heating the same
to a temperature varying from 100° to 400° Fahrenheit or in some instances lower
than 100 Fahrenheit according to special circumstances of the class of work
required to be done. I claim to heat the water alone before mixing or the solution
of acid and water after mixing, the latter course being the preferable one, except
in a small class of cases, as it causes the acid to be better diffused.
I can perform this heating by means of heat derived from coal, gas, oil or from
Price Rd 1

page_text: steam carried through pipes or any other similar methods, now in general use, for
the said purpose.
Now this method, which can be carried out without any danger, will not only
remedy the above named defects, but will save a quantity of acids as now compared
with the cold water process. It has the advantages of making the wool or other
textile materials, which may be immersed in the solution, handle much softer and
after extraction of the obnoxious matters leaves the wool a decidedly better color.
There is also effected a great saving of soaps and alkalies used in scouring as my
process thoroughly extracts all deleterious matters from the materials being
operated upon and largely obviates the use of the articles named.
I claim to apply this improvement to the extracting and carbonising processes of
all kinds of manufacture of shoddy, mungo and any other kind of fabrics or textile
materials.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
:-
1. The heating of the water and acids before or after mixing in the manner and
for the purposes hereinbefore described.
Doted this 07th day of A 1000
HENRY PERCIVAL DAWSON,
Agent for the Applicant.