AN IMPROVED MODE OF PRESERVING PAPER, CANVAS, CLOTH, AND CORDAGE FOR SHIPS' AND OTHER USES, AND THE RAW MATERIAL OF HEMP OR COTTON FROM WHICH THE SAME MAY WHOLLY OR IN PART BE MADE
Year: 1832

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
HOWARD KYAN, of Gillingham Street, Pimlico, Esquire, send greeting.
WHEREAS His present most Excellent Majesty King William the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Twenty-second day of September, in the third year of His
reign, did, for Himself, His heirs and successors, give and grant unto me,
the said John Howard Kyan, His especial licence, that I, the said John'
Howard Kyan, my exors, adiñors, and assigns, or such others as I, the said
John Howard Kyan, my exors, admors, or assigns, should at any time agree
with, and no others, from time to time and at all times hereafter 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, and
also in all His said Majesty's Colonies and Plantations abroad, my Invention
of "AN IMPROVED MODE OF PRESERVING PAPER, CANVAS, CLOTH, AND CORDAGE
FOR SHIPS' AND OTHER USES, AND THE RAW MATERIAL OF HEMP OR COTTON FROM
WHICH THE SAME MAY WHOLLY OR IN PART BE MADE;" in which said Letters
Patent is contained a proviso obliging me, the said John Howard Kyan, by
an instrument in writing under my hand and seal, particularly to describe
and ascertain the nature of my said Invention, and in what manner the same
is to be performed, and to cause the same to be inrolled in His 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
John Howard Kyan, do hereby declare the nature of my said Invention to
consist in steeping the several manufactures and materials herein-before
specified in a solution of deutochloride of mercury in water; and in further
compliance with the said proviso, I, the said John Howard Kyan, do hereby
declare the manner in which my said Invention is to be performed by the
following statement thereof (that is to say) :-
Having prepared or constructed a large tank or reservoir of wood or other
suitable material, I fill it about two-thirds full of deutochloride of mercury, or,
as it is more commonly called, corrosive sublimate, dissolved in hot or cold
water, in the proportion of one pound of sublimate to five gallons of water,
and into this liquid I put the said manufactures and materials herein-before
specified, and, keeping them completely covered by the liquid, steep them for
various périods, according to the nature and substance of the manufacture or
material, the object being that a complete saturation should take place.
Thus, for instance, a thin piece of calico cloth may be left in the liquid for
one day, while a thick piece of canvas may remain a week, and cordage pro-
portionably longer. The raw materials also will be subject to the same rule of
saturation. When removed from the tank or reservoir, the manufactures or
materials should be first thoroughly dried, and then may be washed in any
number of waters, hot or cold, to remove any portion in excess of the delete-
rious matter which may be supposed to remain in them, for the action of the
deutochloride having once taken effect upon the matter which promotes
decay, a chemical change is effected in it which no subsequent washing can
destroy, and which renders the longer pressure of any deleterious matter quite.
unnecessary.
Now, whereas I claim as my Invention the preservation of paper,
canvas, cloth, and cordage for ships' and other uses, and also the preservation
of the raw materials of hemp, flax, or cotton, from which the same may
wholly or in part be made, from decay, by immersing and steeping or saturat-
ing the same in or with a solution of corrosive sublimate in water, and thus
submitting that matter contained in the said manufactures and materials
which most promotes decay to the action of deutochloride of mercury, as
herein-before described; and such my Invention being, to: the best of my:
knowledge and belief, entirely new, and never before used within that part.
of His said Majesty's United Kingdom of Great Britain and Ireland called
England, His said Dominion of Wales, and Town of Berwick-upon-Tweed,
nor in any of His said Majesty's Colonies or Plantations abroad, I do hereby
declare this to be my Specification of the same, and that I do verily believe

page_text: that this my said Specification doth comply in all respects, fully and without
reserve or disguise, with the proviso in the said herein-before in part recited
Letters Patent contained, wherefore I do hereby claim to maintain exclusive
right and privilege to my said Invention.
In witness whereof, I, the said John Howard Kyan, have hereunto
set my hand and seal, this Twenty-second day of March, in the year of
our Lord One thousand eight hundred and thirty-three.
JOHN HOWARD (L.s.) KYAN.
AND BE IT REMEMBERED, that on the Twenty-second day of March, in
the year of our Lord 1833, the aforesaid John Howard Kyan came before our
said Lord the King in His 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.
Inrolled the Twenty-second day of March, in the year of our Lord One
thousand eight hundred and thirty-three.