DISCLAIMER AND MEMORANDUM OF ALTERATION
Year: 1850

page_text: COLMAN'S DISCLAIMER AND MEMORANDUM OF
ALTERATION.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
COLMAN, of Stoke Mills, Stoke, near Norwich, in the County of Norfolk,
Mustard and Starch Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria by Her Letters
Patent under the Great Seal of the United Kingdom of Great Britain and
Ireland, bearing date at Westminster, the Eighth day of June, in the thirteenth
year of Her reign, did give and grant unto me, the said James Colman, my
exors, admiors, and assigns, Her especial license, full power, sole privilege
and authority, that I, the said James Colman, my exors, adñors, and assigns,
and such others as I, the said James Colman, my exors, admors, and assigns,
should agree with, and no others, should and lawfully might make, use,
exercise, and vend my Invention, therein entitled "IMPROVEMENTS IN
MANUFACTURE OF STARCH," within England and Wales, and Berwick-upon-
Tweed, during the term of fourteen years then next ensuing: And whereas
I, the said James Colman, in pursuance of a proviso in the said Letters Patent
contained, and by a Specification, being an instrument in writing under my
hand and seal, dated the Sixth day of December, One thousand eight hundred*
and fifty, describe and ascertain the nature of my said Invention, and in what
manner the same is to be performed, and did cause the same Specification*
to be enrolled in Her Majesty's High Court of Chancery at Westminster
within the time and in the manner required by the said proviso: And whereas
since the enrolment of the said Specification I bave discovered that so much
of the said Invention as consists of the application either of a solution of borax
and lime, or borax alone, or of bitartrate of potash in the manufacture of
starch in the manner and for the purposes described or mentioned in the said
Specification, is not of so much practical value as I originally deemed the

page_text: same to be, and I am therefore desirous of disclaiming the same, and of
altering the said Specification so as to confine the claim of Invention therein
comprised in manner herein-after expressed.
NOW KNOW YE, THEREFORE, that I, the said James Colman, by and
with the leave of Sir Alexander James Edmund Cockburn, Knight, Her
Majesty's Solicitor-General, and for the reasons aforesaid, do hereby disclaim all
so much and such part or parts of the said Specification as describes, claims, or
mentions the application of either borax and lime, or borax alone, or bitartrate
of potash and lime in solution, in the manufacture of starch from rice or any
farinaceous and leguminous substances containing or yielding starch in the
manner and for the purposes in the said Specification mentioned, and also all
so much and such parts of the description and claim of Invention in the said
Specification contained as are not comprised in the said description and claim
of Invention as herein-after altered.
AND FURTHER KNOW YE, that by and with the leave aforesaid, and
for the reasons aforesaid, I, the said James Colman, do hereby alter the said
Specification so that the same may and shall describe and ascertain the nature
of the said Invention, and in what manner the same is to be performed, in
these words (that is to say):
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"
My said Invention consists of a mode or modes of applying a certain salt
"or chemical substance in the manufacture of starch from rice or any
farinaceous or leguminous substances containing or yielding starch for the
purpose of facilitating or promoting the separation of starch from gluten or
"other similar' substances with which it may be combined or mixed, and
obtaining such starch in greater purity or of a better quality."
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"
By describing the application of my Invention in the manufacture of
"starch from rice, the mode of applying it in the manufacture of starch from
"other farinaceous or leguminous substances will readily be understood."
"When I intend to apply my Invention in the manufacture of starch from
"rice, I take a ton of rice either whole or broken, and either with or without
"its husk, and I subject it to the action of a caustic alkaline ley, in the usual
"
way, preferring to use a ley of soda instead of potash, as being less expensive
"and not having so much tendency to cause the starch to be deliquescent."
When the rice has been steeped in the ley or alkaline solution for a.
"sufficient length of time to destroy the union of or diminish the affinity
between the starch and the gluten contained in the rice, I wash it and pass
it through levigating stones in the usual way, and grind or crush it into a
pulp as fine as necessary to allow as much as practicable of the starch to be
"separated from the other vegetable matters with which it is combined or
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page_text: "
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mixed. This grinding or levigating process is well known and need not
"be described, as it forms no part of my Invention." "The rice being now
"reduced to a fine pulp, it is to be poured or passed into a churn, to which is
"to be added forty gallons or thereabouts of a solution prepared in the follow-
ing manner":"I take about twenty pounds of the salt commonly called
cream of tartar and sometimes-supertartrate of potash, and dissolve it in such
a quantity or proportion of water as will be sufficient to retain the salt in solu-
tion when cold (being as well known) about one hundred and eighty parts by
weight of water to one of cream of tartar." "In order to facilitate the solution
" of the salt, I use hot or warm water for dissolving it, and after the solution
"has been made I allow it to stand until cold, so that any insoluble impurities
with which it may have accidentally become mixed may subside or rise to the
top." "I then separate the solution from any such impurities as I have
mentioned, and the clear liquor is then to be set aside to be mixed with the
pulp when put into the churn." "When the rice pulp introduced into the
churn, as already mentioned, has been mixed with forty gallons of a solution
"of bitartrate of potash, such as I have just described, the mixture is to be
thoroughly agitated for two or three hours, so as to ensure the complete
action of the solution upon every portion of the pulp." "This churning
operation being completed, the contents of the churn are to be transferred
"to the separating vessel, and a quantity of water equal in measure to the
"
"
"
"
"
"
contents of the churn, or thereabouts, is to be added to the pulp; this
"mixture being well stirred is to be left at rest to separate, which is done in
"the usual way, after which, washing, cleansing, boxing, and drying may be
performed in like manner as ordinarily practised in making starch, either
"from rice or other material." "When this Invention is used or applied in
"the manufacture of starch from any other farinaceous or leguminous
"substances, the solution used is to be applied to such substances after they
"shall have been reduced to a pulp, or otherwise minutely divided in like
manner as herein before directed with respect to the application of such a
"solution to the pulp of rice."
"
Having now described the nature of my Invention, and the manner in which
it is to be performed, I hereby declare that I claim as of my said Invention,
the application of a solution of bitartrate of potash to act upon the pulpy
matters from which starch is to be separated, and facilitate or promote the
separation of the starch from the matter with which it is mixed, in manner
herein-before described.
And I, the said James Colinan, do hereby further declare, that the above
written Disclaimer and Memorandum of Alteration are not, nor is either of

page_text: them, nor is any part thereof, respectively intended to extend the exclusive
right granted by the said Letters Patent, and that these Presents shall not
extend the said exclusive right in any way whatever.
In witness whereof, I, the said James Colman, have hereunto set my
hand and seal, the Seventeenth day of February One thousand eight
JAMES (L.S.) ULMAN.
To the Clerk of the Patents of England.
This is to certify, that the within-named James Colman, of Stoke Mills,
near Norwich, in the County of Norfolk, Mustard and Starch Manufacturer,
has applied to me for leave to enter with you the within-written Disclaimer.
and Memorandum of Alteration of part of the Specification of a certain Inven-
tion for which Letters Patent were granted to him under the Great Seal of
Great Britain, dated at Westmister, the 8th day of June 1850, and to which
a Specification was duly enrolled; and having considered of the aforesaid
application, and no objection having been made to the same, I hereby grant
leave to the said James Colman to file his said Disclaimer & Memorandum of
Alteration pursuant to the Statute passed in the fifth and sixth years of the
reign of His late Majesty King William the Fourth, entituled "An Act to
"amend the Law touching Letters Patent for Inventions."
Temple, February 24th, 1851.
FICKLING, Extra.
[
AND BE IT REMEMBERED, that on the First day of March, in the year.
of our Lord 1851, the aforesaid James Colman came before our said Lady
the Queen in Her Chancery, and acknowledged the Disclaimer aforesaid, and
all and everything therein contained and specified, in form above written.
And also the Disclaimer aforesaid was stamped according to the tenor of the
Statute made for that purpose.
Enrolled the Fourth day of March, in the year of our Lord One thousand
eight hundred and fifty-one.

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
COLMAN, of Stoke Mills, Stoke, near Norwich, in the County of Norfolk,
Mustard and Starch Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent under the Great Seal of the United Kingdom of Great Britain and
Ireland, bearing date at Westminster, the Eighth day of June, in the
thirteenth year of Her reign, did give and grant unto me, the said James
Colman, my exors, admors, and assigns, Her especial licence, full power,
sole privilege and authority, that I, the said James Colman, my exors,
adiors, and assigns, and such others as I, the said James Colman, my
exors, adñiors, or assigns, should at any time agree with, and no others,
should and lawfully might make, use, exercise, and vend my Invention of
"IMPROVEMENTS IN THE MANUFACTURE OF STARCH," within that part of the
United Kingdom of Great Britain and Ireland called England, Her Dominion
of Wales, and Town of Berwick-upon-Tweed, during the term of fourteen
years then next ensuing; in which said Letters Patent there is contained a
proviso, requiring that I, the said James Colman, shall particularly describe
and ascertain the nature of my said Invention, and in what manner the same
is to be performed, by an instrument in writing under my hand and seal,
and cause the same to be enrolled in Her said Majesty's High Court of
Chancery within six calendar months next and immediately after the date
of the said in part recited Letters Patent, as, reference being thereunto had,
will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
James Colman, do hereby declare that the nature of my Invention, and the

page_text: manner in which the same is to be performed, are particularly described and
ascertained in and by this present Specification or Instrument in writing, as
follows, that is to say :-
My said Invention consists of a mode or modes of applying a certain salt
or salts, or chemical substance or substances, in the manufacture of starch
from rice or any farinaceous or leguminous substances containing or yielding
starch, for the purpose of facilitating or promoting the separation of starch
from gluten, or other similar substances with which it may be combined or
mixed, and obtaining such starch in greater purity or of a better quality.
By describing the application of my Invention in the manufacture of starch
from rice, the mode of applying it in the manufacture of starch from other
farinaceous or leguminous substances will readily be understood. When I
intend to apply my Invention in the manufacture of starch from rice, I take
a ton of rice, either whole or broken, and either with or without its husk, and
I subject it to the action of a caustic alkaline ley, in the usual way, preferring
to use a ley of soda instead of potash, as being less expensive, and not having
so much tendency to cause the starch to be deliquescent. When the rice
has been steeped in the ley or alkaline solution for a sufficient length of time
to destroy the union of or diminish the the affinity between the starch and
the gluten contained in the rice, I wash it and pass it through levigating
stones, in the usual way, and grind or crush it into a pulp, as fine as necessary,
to allow as much as practicable of the starch to be separated from the other
vegetable matters with which it is combined or mixed. This grinding or
levigating process is well known and need not be described, as it forms no
part of my Invention. The rice being now reduced to a fine pulp is to be
poured or passed into a churn, to which is to be added forty gallons or there-
abouts of a solution prepared in the following manner:-I take about twenty
pounds of borax and dissolve it in such a quantity or proportion of water as
will be sufficient to retain the salt in solution when cold, being (as well
known) about twenty parts by weight of water to one of borax. In order
to facilitate the solution of the salt, I use hot or warm water for dissolving
it; and after the solution has been made I allow it to stand until cold, so
that any insoluble impurities with which it may have accidentally become
mixed may subside or rise to the top. I then separate the solution from any
such impurities as I have mentioned, and pour it upon a bushel of fresh
well burnt unslacked lime, in a vessel of sufficient capacity; and to this I add
a sufficient quantity of cold water to make the whole quantity of water in
the vessel fifty gallons or thereabouts. I then stir or agitate the contents of
the vessel until the whole have become thoroughly mixed together, after which

page_text: I allow the materials to remain at rest until all the undissolved parts have
precipitated. The clear liquor is then to be drawn or separated from the
undissolved matters by syphons, filtration, or otherwise, and set aside to be
mixed with the pulp when put into the churn. When the rice pulp intro-
duced into the churn, as already mentioned, has been mixed with forty gallons
of a solution of borax and lime, such as I have just described, the mixture
is to be thoroughly agitated for two or three hours, so as to ensure the
complete action of the solution upon every portion of the pulp. This churning
operation being completed, the contents of the churn are to be transferred
to the separating vessel, and a quantity of water, equal in measure to the
contents of the churn or thereabouts, is to be added to the pulp. This
mixture being well stirred is to be left at rest to separate, which is done in
the usual way, after which washing, cleansing, boxing, and drying may be
performed in like manner as ordinarily practised in making starch, either
from rice or other material. Instead of adding a quantity of a solution of
borax and lime to the pulp in the churn, a similar quantity of a solution of
borax only may be mixed with the pulp, proceeding in all other respects as I
have already mentioned. And in like manner the salt commonly called cream
of tarter, and sometimes supertartrate of potass, but more correctly the bitar-
trate of potash, may be used either separately or in conjunction with lime in
solution for acting upon the pulp in the churn, and for promoting the separation
of the starch from the other vegetable matters with which it is intermixed.
When this Invention is used or applied in the manufacture of starch from any
other farinaceous or leguminous substances, the solution used is to be applied
to such substances after they shall have been reduced to a pulp or otherwise
minutely divided, in like manner as herein-before directed with respect to the
application of such a solution to the pulp of rice.
Having now described the nature of my Invention, and the manner in
which it is to be performed, I hereby declare that I claim as of my said
Invention the application of a solution of borax or bitartrate. of potash and
lime, or of borax or bitartrate of potash only, to act upon the pulpy matters
from which starch is to be separated, and facilitate or promote the separation
of the starch from the matters with which it is mixed, in manner herein-before
described.
In witness whereof, I, the said James Colman, have hereunto set my
hand and seal, the Sixth day of December, One thousand eight
hundred and fift..
JAMES (L.S.) COLMAN.

page_text: AND BE IT REMEMBERED, that on the Sixth day of December, in the
year of our Lord 1850, the aforesaid James Colman came before our said
Lady the Queen in Her Chancery, and acknowledged the Specification
aforesaid, and all and every thing therein contained and specified, in form
above written. And also the Specification aforesaid was stamped according
to the tenor of the Statute made for that purpose.
Enrolled the Seventh day of December, in the year of our Lord One
thousand oight hundred and fifty