AN IMPROVEMENT IN THE MANUFACTURE OF STARCH
Year: 1856

page_text: LETTERS PATENT to Henry Doubleday, of Coggeshall, in the County of
Essex, for the Invention of "AN IMPROVEMENT IN THE MANUFACTURE OF
STARCH."
Sealed the 23rd January 1857, and dated the 23rd July 1856.
PROVISIONAL SPECIFICATION left by the said Henry Doubleday at the
Office of the Commissioners of Patents, with his Petition, on the 23rd
July 1856.
I, HENRY DOUBLEDAY, of Coggeshall, in the County of Essex, do hereby
declare the nature of the Invention for "AN IMPROVEMENT IN THE MANUFACTURE
OF STARCH," to be as follows:-
This Invention has for its object an improvement in the manufacture of
starch. For this purpose a quantity of bran, or husks, or like dry matters
(which by combining with the gluten will render it more permeable to the
water) is added to the flour or meal employed, by which means the starch
may be washed out or separated by water more readily and advantageously
than heretofore, and by which means fermentation and chemical menstrua

page_text: for the purposes of separating the starch from the gluten may be dispensed
with. By this process the gluten is preserved, and may be used either as
food for animals or applied to other purposes.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Henry Doubleday in the Great Seal Patent Office on the
23rd January 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
DOUBLEDAY, of Coggeshall, in the County of Essex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-third day of July, in the year of our Lord
One thousand eight hundred and fifty-six, in the twentieth year of Her reign,
did, for Herself, Her Heirs and successors, give and grant unto me, the said
Henry Doubleday, Her special licence that. I, the said Henry Doubleday, my
executors, administrators, and assigns, or such others as I, the said Henry
Doubleday, my executors, adininistrators, and assigns, should at any time
agree with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make, use
exercise, and vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and, Isle of Man, an Invention for. "AN IMPROVEMENT
IN THE MANUFACTURE OF STARCH," upon the condition (amongst others) that I,
the said Henry Doubleday, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, should par-
ticularly describe and ascertain the nature of the said Invention, and in what
imanner the same was to be performed, and cause the same to be filed in
the Great Seal-Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
-NOW KNOW YE, that I, the, said Henry Doubleday,, do hereby declare
the nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and.by the following
statement thereof, that is to say.
This Invention has for its object an improvement in the manufacture of
starch. For this purpose, a quantity of bran, or husks, or, like dry matters
(which by combining with the gluten, will render it more permeable to the
water) is added to the flour or meal employed, by which means the starch
may be washed ont or separated by water more readily and advantageously

page_text: than heretofore, and by which means fermentation and chemical menstrua, for
the purposes of separating the starch from the gluten, may be dispensed with.
By this process the gluten is preserved, and may be used either as food for
animals or applied to other purposes.
=
Having thus stated the nature of, my said Invention, I will proceed more
fully to describe the manner of performing the same.
The wheat or other, grain, used having been ground, in order to reduce it
to meal, a quantity of bran, or, it may be of husks of grain, is to be added
thereto and mixed therewith. I prefer to employ the husks of oats for these
purposes, and I use an addition of about one part by measure of bran or of
the busks of grain to ten parts of meal, though the proportions may be varied.
The object of the addition of bran or of husks is to render the dough more
permeable to water than when the dough is made from the meal of wheat or
other grain without such addition. I would here, remark that I am aware
that the starch of wheat and other grain has before been separated from the
dough prepared from the meal of wheat and other grain by subjecting the
dough to a kneading process under water, or when water is flowing in contact
with such dough; and the process of kneading dough in the presence of water
has sometimes been performed in troughs with a constant supply of water
thereto, and sometimes the dough has been placed in canvass or other bags,
and has been pressed and moved about or kneaded, water being in contact
with the exterior surfaces of such bags. I mention these facts in order to
state that I make no claim to the separation of starch from dough produced
from wheat or otherwise, excepting when the dough contains an additional
quantity of bran or husks than is ordinarily due to the meal obtained from
the wheat or grain used.
In carrying out my Invention, the meal and the addition of* bran or of
husks being well mixed together are to be made into a stiff dough, and the
dough thus produced is to be well worked or kneaded under water, or with
water flowing in contact therewith; or the dough may be placed in canvass or
other permeable bags and kneaded and well pressed, and worked under water,
or with water constantly in contact therewith; and it will be found that by
reason of the addition of bran or of husks the dough will be more readily
acted on by the water, and the starch will be more quickly and completely
removed or separated therefrom. The state of the water flowing from the
dough will, as heretofore, indicate when the starch has been removed from
the dough. It may be stated, that when using bags, as above mentioned,
the dough may be rendered more fluid by an addition of water before putting

page_text: it in bags. The starch being washed out and separated, as above explained,
from the gluten by the water, it is to be allowed to settle, and the starch is
to be finished in the ordinary manner. The gluten remaining being fresh,
will be suitable for the food of animals.
In witness whereof, I, the said Henry Doubleday, have hereunto set my
hand and seal, this Twenty-first day of January, in the year of our
Lord One thousand eight hundred and fifty-seven.
Witness,
S. CARPMAEL.
HENRY DOUBLEDAY. (LS.)