IMPROVEMENTS IN THE MANUFACTURE OF STARCH "
Year: 1883

page_text: LETTERS PATENT to John Polson of the Firm of Brown and Polson of
Paisley in the County of Renfrew, North Britain, Corn Flour and Starch
Manufacturer, and John Marshall Harley of Paisley aforesaid, Manager to
the said firm-for an Invention of "IMPROVEMENTS IN THE MANUFACTURE
OF STARCH
"
PROVISIONAL SPECIFICATION left by the said John Polson and John
Marsball Harley at the Office of the Commissioners of Patents on the
31st May 1883.
JOHN POLSON of the Firm of Brown and Polson of Paisley in the County of
Renfrew, North Britain Corn Flour and Starch Manufacturer and JOHN
MARSHALL HARLEY of Paisley aforesaid Manager to the said Firm " IMPROVE-
MENTS IN THE MANUFACTURE OF STARCH"
This Invention which relates to Improvements in the manufacture of Starch has
reference not only to Starch used for ordinary household or manufacturing purposes
but also to Starch used or prepared for edible or culinary purposes such as is
generally known as Corn Flour and Prepared Corn,
The Invention has for its object not only to improve Starch as herein before
mentioned generally so as to render the same more mellow and more free from
that peculiar odour and flavour or taste resulting from the process of drying such
substances under the influence of artificial heat, but also to render the granulation
thereof more complete and the lumps usually called crystals less brittle and larger
in size.
The Invention by which the foregoing objects are effected consists in taking the
Starch after it has been drained of moisture and cut up or divided, and placing it
in a stove wherein it is dried in an atmosphere charged with moisture or steam,
which steam may be saturated or superheated.-The moisture or steam may be
introduced either by steam injected into the said stove by perforated pipes or
Price 4d 1

page_text: their equivalent or by water in the form of spray or otherwise so as to obtain the
requisite degreo of moisture in the stove.
In carrying out this Invention it is desirable to observe this precaution, namely,
that before bringing the Starch into contact with the hot, moist atmosphere of the
stove, the starch should be previously warmed so as to avoid the injurious effect 5
of the moisture of the heated atmosphere condensing upon the cold starch, and this
may be accomplished by heating up the Starch in the stove to the requisite degree,
before the steam or moisture is applied.
"
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Polson and John Marshall Harley in the Great Seal Patent
Office on the 30th November 1883.
JOHN POLSON of the Firm of Brown and Polson of Paisley in the County of
Renfrew, North Britain, Flour and Corn Starch Manufacturer and JOHN
MARSHALL HARLEY of Paisley aforesaid Manager to the said Firm IMPROVE-
MENTS IN THE MANUFACTURE OF STARCH"
"
Our said Invention relates to improvements in the manufacture of Starch and
has reference not only to Starch used for ordinary household or Manufacturing
purposes but also to Starch used or prepared for edible or culinary purposes such
as is generally known as "Corn-flour" and "prepared Corn."
The Invention has for its object not only to improve Starch as herein before
described generally so as to render the same mellow and also more free from that
peculiar odour and flavour or taste resulting from the process of drying such
substances under the influence of artifical heat but also to render the granulation
more complete and the lumps usually called “Crystals" less brittle and larger
in size.
The Invention by which the foregoing objects are effected consists in taking the
Starch after it has been drained of moisture and cut up or divided and placing it
in a stove wherein it is dried in an atmosphere charged with moisture or steam-
The moisture or steam may be introduced either by steam injected into the said
stove by perforated pipes or their equivalent or by water in the form of spray
or otherwise so as to obtain the requisite degree of moisture in the stove.
In carrying out our Invention it is desirable to observe this precaution namely
that before bringing the Starch into contact with the hot moist atmosphere of the
stove the Starch should be previously warmed, so as to avoid the injurious effect
of the moisture of the heated atmosphere condensing upon the cold Starch and
this may be effected for example by heating up the Starch in the stove to the
requisite degree before the moisture is applied.
Having now described and particularly ascertained the nature of our said

page_text: Invention and the system mode or manner in or under which the same is or may
be used or practically carried into effect we would observe in conclusion that
what we consider to be novel and original and therefore Claim as the Invention
secured to us by the herein before in part recited Letters Patent is
The Improvement in treating Starch consisting in drying it in a stove whose
atmosphere is charged with moisture or steam as herein before described.
In Witness Whereof we the said John Polson and John Marshall Harley have
hereunto set our hands and seals this twenty eighth day of November in the year
of our Lord One thousand eight hundred and eighty three.
ТОПАТ
(4.8.)
JOHN MARSHALL HARLEY. (L.S.)