IMPROVEMENTS IN THE. MANUFACTURE OF INK OR WRITING FLUIDS
Year: 1840

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
SCOTT, of Brownlow Street, Bedford Row, in the County of Middlesex,
Surgeon, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Letters Patent under the Great Seal of Great Britain, bearing date at West-
minster, the Thirtieth day of December, in the fourth year of Her reign, did,
for Herself, Her heirs and successors, give and grant unto me, the sajd
Henry Scott, Her especial licence, full power, sole privilege and authority,
that I, the said Henry. Scott, my exors, admors, and assigns, or such others
as I, the said Henry Scott, my exors, admors, or assigns, should at any time
agree with, and no others, from time to time and all times during the term of
years therein expressed, should and lawfully might make, use, exercise,
and vend, within England, Wales, . and the Town of Berwick-upon-Tweed,
my Invention of "IMPROVEMENTS IN THE. MANUFACTURE OF INK OR WRITING
FLUIDS;" in which said Letters Patent is contained a proviso that I, the said
Henry Scott, shall cause a particular description of the nature of my said
Invention, and in what manner the same is to be performed, to be inrolled
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 in and by the same, reference being thereunto had, will more fully and at
large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
Henry Scott, do hereby declare that the nature of my said Invention, and
the manner in which the same is to be performed, are fully described and
ascertained in and by the following statement thereof (that is to say) :-
Take forty-eight pounds of logwood chips, and let them be saturated two
days in soft water; then put the same into a close covered iron cauldron, and
add eighty gallons of soft water; let these be boiled one hour and a half; when
take out the wood and leave the fluid, to which add forty-eight pounds of the
best picked "Alleppo galls" in coarse powder; boil these half an hour longer,
when draw off the fire, and let it remain in the cauldron twenty-four hours
infusing, during which it is to be very frequently agitated. When the pro-
perties of the galls is sufficiently extracted, draw off the clear fluid into a vat,
and add forty pounds of pulverized "sulphate of iron." Let these ingredients
remain a week (stirring daily), after which time add four gallons of vinegar.
Next take seven pounds and a half of the best picked "gum arabic," and dissolve
it in sufficient water to form a good mucilage, which must be well strained, and
then added to the fluid by degrees: Let these stand a few days longer, when
pour into the same twenty ouncès of "the concentrated nitrate of iron." Let
the whole stand by again until it has arrived to its height of blackness; next
pour the clear fluid off from the sediment; and add to it the following sub-
stances, each prepared and ground separately:-
First, take half a pound of "Spanish indigo," which grind very fine
between. a muller and stone, adding by degrees portions of the ink until it is
made into an easy soluble pašte: Next take well washed and purified
"Prussian blue," five pounds, which prepare as the former, except. grinding
it in distilled water 'in lieu of the fluid, until it is formed into a 'soluble paste;
also next take four ounces of gas black, which results from the smoke of gas
burners received on surfaces of glass;. as is well known, which grind in one
ounce of the nitrate of iron. When each is sufficiently fine, let them remain a
few hours unmixed, when the whole may be incorporated with the fluid, and
kept agitated daily for a week; the clear may then be poured off for use.
The above will make eighty gallons.
Having thus described the nature of my Invention; and the männer in
which the same is to be performed; I would remark, that although I have
been particular in describing the materials for making ink, I do not confiné
myself to the use of 'all the ingredients, nor to the quantities given, the Inven
tion being peculiar, inasmuch as the application of nitrate of iron and gas
black, which I-generally use combined in the same ink, though only one of
them may be used; and I claim the application of nitrate of iron and gas

page_text: отаск WD
nk.
orner suitable materials in the manufacture of
In witness whereof, I, the said Henry Scott, have hereunto set my
hand and seal, this Thirtieth day of June, in the year of our Lord
One thousand eight hundred and forty-one.
Inrolled the Thirtieth day of June, in the year of our Lord One thousand
eight hundred and forty-one.