IMPROVEMENTS IN THE MANUFACTURE AND PREPARATION OF STARCH."
Year: 1880

page_text: LETTERS PATENT to Thomas Francis Scott, of Leytonstone, in the County of
Essex, Analytical Chemist, for an Invention of "IMPROVEMENTS IN THE
MANUFACTURE AND PREPARATION OF STARCH."
PROVISIONAL SPECIFICATION left by the said Thomas Francis Scott at the
Office of the Commissioners of Patents on the 28th January 1880.
THOMAS FRANCIS SCOTT, of Leytonstone, in the County of Essex, Analytical
Chemist. "IMPROVEMENTS IN THE MANUFACTURE AND PREPARATION OF STARCH."
In carrying out the objects of my Invention I proceed mainly as follows:-
I mix with the ordinary starch in suitable proportion calcareous, aluminious, or
baryties compounds in conjunction with oleaginous or soapy matter in combination
with the borates of soda and soluble silicates, thereby not only increasing the
stiffening power of the said starchy material, but greatly facilitating the working
or ironing of fabrics thus treated; also increasing the gloss or burnish on fabrics
treated with such compound starch.
I prefer to use rice starch for the manufacture of such compound starch, but can
use any starch that may be found to work satisfactorily with such calcareous
aluminious baryties, borates, or soluble silicates in combination with soapy
matter.
To manufacture the said compound starch I take any of the above earths or
clays, as terra abla for instance, and having treated the said earths or clays with
soluble silicates I then mix with starch and soapy matter by any suitable means,
adding such quantity of borates, calcareous, aluminious, baryties, soluble silicates,
or earthy compounds, and use as ordinary starch.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Thomas Francis Scott in the Great Seal Patent Office on the 28th
July 1880.
THOMAS FRANCIS SCOTT, of Leytonstone, in the County of Essex, Analytical
Chemist. "IMPROVEMENTS IN THE MANUFACTURE AND PREPARATION OF STARCH."
The objects and nature of my Invention are substantially as follows:-
I mix with the ordinary starch in suitable proportions calcareous, aluminous, or
baryties compounds in conjunction with oleaginous or other matter, or in com-
bination with the borates of soda and soluble silicates, thereby not only increasing
the stiffening power of the said starchy material, but greatly facilitating the
working or ironing of fabrics thus treated; also increasing the gloss or burnish on
fabrics treated with such compound starch. I prefer to use rice starch for the
manufacture of such compound starch, but can use any starch that may be found
to work satisfactorily with such calcareous aluminous baryties, borates, or soluble
silicates in combination with soapy matter. To manufacture the said compound
starch I take any of the above earths or clays, as terra alba for instance, and
having treated the said earths or clays with soluble silicates I then mix same with
starch and soapy matter by any suitable means, adding such quantity of borates,
calcareous aluminious baryties, soluble silicates, or earthy compounds, and use as
ordinary starch.
In the preparation and manufacture of my improved starch I take, say, one ton
of starch, one hundred weight of sapponified or soapy matter, one hundred weight
of biborates of soda or borax, one hundred weight of silicate of soda, one hundred
weight (say) of terra alba, or other suitable earths.
The above proportions are applied or mixed as follows:-
:-
I place the sapponified or soapy matter in a steam copper with a suitable
proportion of water, and mix therewith the biborates and silicates, and add thereto
the terra alba other earths. After well mixing the same is allowed to dry,
and is then mixed by suitable means with the above or suitable quantity of
starch.
I would here remark that the above proportions are such as I have found to
answer, but I do not limit myself to the proportions given, as same may be varied
without departing from the principle of my Invention, the great point of my
Invention being the combination of sapponified or soapy matter in conjunction
with the ingredients before mentioned, so as to be useful for increasing the practical
utility of starch, the object being not only to obtain the highest quality or finish
or gloss, but to protect fabric from wear and tear, and at the same time to facilitate
the working of the same, as by using starch so manufactured the dirt is prevented
from entering the body of the article, and the starch being soluble in hot water
the labour of rubbing or removing the dirt therefrom is reduced to a minimum,
and also the soapy matter at once makes the starch treated according to my
Invention flexible, and therefore not liable to crack after ironing, as is the case in
ironing with ordinary starch, and also the soapy matter prevents sticking or
adhesion of the smoothing iron.
•
.
In conclusion I would observe that I wish it to be understood that an important
point in my Invention is the production of a starch which is elastic and soluble,
and gives a gloss or glaze without sticking to the smoothing iron, and by the very
nature of its composition the pores of the articles to which it is applied are closed,
and the dirt prevented from penetrating the body of the material to which such
starch is applied; therefore I protect the fibres by the use of such starch, an
effect of great importance as regards the prevention of contagious diseases.
Having now particularly described and ascertained the nature and object of the
said Invention, and in what manner the same is to be performed or carried out in

page_text: practice, I hereby declare that I claim the Invention of "Improvements in the
Manufacture and Preparation of Starch," substantially as hereinbefore set forth
and described.
In witness whereof, I, the said Thomas Francis Scott, have hereunto set my
hand and seal, this Twenty eighth day of July, in the year of our Lord One
thousand eight hundred and eighty.
THOMAS FRANCIS SCOTT. (L.S.)