AN IMPROVED PROCESS OR MEANS FOR EXTRACTING TANNIN OR TANNIC ACID FROM MIRABALUM NUTS AND OTHER VEGETABLE PRODUCTS to be as follows.
Year: 1884

page_text: We, JOHN DEARNLEY WILSON, ABRAM AMBLER and JAMES CHARNOCK MARSHALL
all of Sowerby Bridge in the County of York do hereby declare the nature of said
Invention for "AN IMPROVED PROCESS OR MEANS FOR EXTRACTING TANNIN OR
TANNIC ACID FROM MIRABALUM NUTS AND OTHER VEGETABLE PRODUCTS to
be as follows.
"
Our Invention consists of an improved process or means for extracting tannin or
tannic acid from mirabalum nuts, shumac, dur, blue galls, gambier, cutch oak bark,
baltimore and Philadelphia bark, mimosa bark valoria and other vegetable
productions containing tannin or tannic acid and has for its object to obtain a
greater quantity of tannin from such Vegetable products than is obtained by the
processes at present employed.
In order to obtain this result the mirabalum nuts or other vegetable product to
be treated is placed in a vessel containing cold water to which is added chloride of
sodium in the proportion by weight of about one of chloride of sodium to two of
Mirabalum nuts and the whole is then raised to a temperature of about
212° Fahrenheit after which the liquor is allowed to cool and may then be drawn
off into a Vat or Cistern for use for mordanting cotton goods and the like. Some
vegetable products are ground before subjected to the hereinbefore described
process.
The liquor thus produced will keep from turning sour considerably longer than
that produced by the processes heretofore used whilst a greater quantity of tannin
or tannic acid is obtained from a given quantity of mirabalums or other Vegetable
product and there is no waste as the vegetable products may be treated over and
over again until the whole of the tannin or tannic acid is extracted therefrom.
The process herein before described is equally applicable for extracting tannin or
tannic acid from oak bark, galls, shumac, mirabalums, gambier, cutch mimosa bark
valoria and other vegetable productions for treating hides and the like.
J. HENRY JOHNSON,
47, Lincoln's Inn Fields, London, W.C.,
Agent for the said John Dearnley Wilson, Abram
Ambler, and James Charnock Marshall,

page_text: We JOHN DEARNLEY WILSON, ABRAM AMBLER and JAMES CHARNOCK MARSHALL
all of Sowerby Bridge in the County of York do hereby declare the nature of
said invention for "AN IMPROVED PROCESS OR MEANS FOR EXTRACTING TANNIN
OR TANNIC ACID FROM MIRABALUM NUTS AND OTHER VEGETABLE PRODUCTS
and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:-
37
The Invention consists of an improved process or means for extracting tannin
or tannic acid from mirabalum nuts shumac divi-divi, Blue galls, gambier, Cutch,
Oakbark Baltimore and Philadelphia Bark, Mimosa Bark Valonia and other
vegetable productions containing tannin or tannic acid and has for its object to
obtain a greater quantity of tannin or tannic acid from such vegetable products
than is obtained by the processes at present employed.
In order to obtain this result we take say for example about 40 lbs of mirabalum
shumac or other vegetable product and place it in a vessel and add thereto 20 lbs
of chloride of sodium (that is to say the proportion of chloride of sodium added
may be one part by weight to two of the vegetable product or thereabouts) We
then add about 60 gallons of water (or in the proportion of one gallon of water to
every pound weight of the other materials) The whole is then raised to a
temperature of about 212° Fahrenheit and continued at that heat for a period of
about 15 minutes being stirred from time to time. The liquor is then run off into
a vat or cistern and when cold is ready for mordaunting cotton goods and the like.
Some vegetable products are ground before being subjected to the hereinbefore
described process.
The liquor thus produced will keep from going sour considerably longer than
that produced by known processes whilst a greater quantity of tannin or tannic
acid is obtained from a given quantity of mirabalum shumac or other vegetable
product. The liquor produced say from 40% of mirabalum and 20lbs of chloride of
sodium will mordaunt as great a quantity of cotton goods as 60th of mirabalum or
shumac alone.
Under the above process there is no waste as the vegetable products may be
treated over and over again until the whole of the tannin or tannic acid is
extracted therefrom. The whole of the tannin or tannic acid in the liquor in the
mordaunting bath can also be extracted without waste.
The process hereinbefore described is equally applicable for extracting tannin or
tannic acid from oakbark galls shumac mirabalum gambier cutch mimosa bark
valonia and other vegetable productions for treating hides skins and the like.
Having now described and particularly ascertained the nature of our said
Invention and the manner in which the same is or may be carried into effect we
would observe in conclusion that we do not claim as original the subjecting
mirabalum shumac and other vegetable productions to the action of water raised
to a high temperature nor the grinding of the same but what we consider to be
novel and original and therefore claim is.
Extracting tannin or tannic acid from mirabalum nuts and other vegetable

page_text: products by boiling the said products in a solution of chloride of sodium
substantially as hereinbefore described.
Date wins teenen day of February 1884.
JOHN DEARNLEY WILSON.
ABRAM AMBLER.
JAMES CHARNOCK MARSHALL.
J. Henry Johnson,
Agent for the said John Dearnley Wilson, Abram
Ambler, and James Charnock Marshall,