EFPECTUALLY HARDENING, TOUGHENING, OR RENDERING VERY FLEXIBLE AND PRESERVING WOOD AND TIMBER IN GENERAL PROM SPEEDY
Year: 1768

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, greeting.
WHEREAS His present Majesty King George the Third, by Ilis Royal
Letters Patent, tested at Westminster, the Ninth day of December last past,
and in the ninth year of Ilis reign, of His especial grace, certain knowledge,
and meer motion, did, for Himself, Ilis heirs and successors, give and grant
unto me, HUMPHRY JACKSON, my executors, administrators, and assigns,
His especial licence, full power, sole priviledge and authority, that I, the said
Humphry Jackson, my executors, administrators, and assigns, and every of
us, by himself and themselves, or by my or their deputy or deputys, servants
or agents, or such others as I, the said Humphry Jackson, my executors,
administrators, or assigns, shall at any time agree with (not exceeding five
persons in number), and none others, from time to time and at all times here-
after during the term of fourteen years from the date of the said Letters
Patent, should and lawfully might make, use, exercise, and vend, within that
part of our Kingdom of Great Britain called England, our Dominion of
Wales, and Town of Berwick-upon-Tweed, and also in our Colonies and
Plantations abroad, in such manner as to I, the said Humphry Jackson, my
executors, administrators, and assigns, or any of us, should in our discretion
seem meet, my Invention or method, which by great study, application, and
expence I had invented, found out, and brought to perfection, intirely new and
not hitherto practised, of "EFPECTUALLY HARDENING, TOUGHENING, OR RENDERING
VERY FLEXIBLE AND PRESERVING WOOD AND TIMBER IN GENERAL PROM SPEEDY

page_text: ROTTING AND DECAY, PARTICULARLY OAK AND ELM PLANK, AS WELL AS THE LARGEST
OAK AND ELM TIMBER USED IN BUILDINGS AND CONSTRUCTING SHIPS OF WAR, AND
ALL OTHER SHIPS OR VESSELS, OF WHAT SIZE SOEVER, WHICH ARE EMPLOYED IN
NAVIGATING THE SEAS OR RIVERS; LIKEWISE FOR DEFENDING AND PRESERVING THE
SAME FROM BEING EATEN AND DESTROYED BY THOSE SPECIES OF ANIMALS COMONLY
CALLED OR KNOWN BY THE NAME OF SEA WORMS, AND WHICH ART IS PARTICULARLY
ADAPTED TO RENDER OAK TIMBER AND WOOD IN GENERAL, THE PRODUCE OF OUR
COLONIES IN AMERICA, WHICH IS THEREBY SO MELIORATED FOR THE USE OF THE SHIP
BUILDER, CARPENTER, COOPER, CARRIAGE MAKER, &C. AS TO EQUAL THE BEST WOODS
AND TIMBERS, THE GROWTH OF GREAT BRITAIN OR FOREIGN COUNTRIES, IN ALL THEIR
PROPERTIES;" with such other power, liberties, and priviledges as is and are by
said Letters Patent more fully expressed; subject nevertheless to a proviso
therein contained, that if I, the said Humphry Jackson, should not particularly
describe and ascertain the nature of the said Invention, and in which manner
the same was to be performed, by an instrument in writing under my hand
and seal, and cause the same to be inrolled in the High Court of Chancery,
within four calendar months next and immediately after the date of the said
Letters Patent, that then the said Letters Patent, and all liberties and
advantages whatsoever thereby granted, should utterly cease, determine, and
become void, as in and by the said Letters Patent, whereunto relation being
had, may and doth more fully and at large appear.
NOW KNOW YE, that I, the said Humphrey Jackson, in pursuance of
the said proviso, do hereby declare that my said Invention is described and
the nature of it ascertained as follows, to wit:-
The Method of Hardening, Toughening, or Rendering very Flexible and
Preserving Wood and Timber in General from Speedy Rotting and Decay.
-According to the thickness of the wood, let it be boiled several hours in a
very strong solution of any calcarious earth, in water, or in any acid whatever,
except the acid of vitriol; then add as much acid of vitriol, or any substance
that contains it, as will exactly neutralize the solution, so that neither earth
nor acid predominate; then boil the wood as before. Afterward take it out
and let it dry.
Cautions to be observed in the Process.-Great care must be taken that the
mixture be exactly neutralized, which can only be found by experience, for if
either the earth or the acid predominate, they will hasten the mischief intended
to be prevented. Fresh ingredients must be used to every fresh parcel of
wood. If the wood be of a hard nature, it must be first boiled a sufficient
time in soap ley, which must afterwards be neutralized and boiled again, as
before mentioned.

page_text: To prevent the Ends of Ship Beams, or any other thick Timber, which
are found most liable to rot, and to prevent Freenails, from decay.-After
they have been boiled in the mixtures above mentioned, and dryed, the
ends of the beams and wood must be impregnated with spirits or oil of
turpentine, mixed with oil of any kind, and a portion of alkaline salt.
The freenails must be steeped in spirits of turpentine and linseed oil till they
are thoroughly impregnated therewith, and then dryed.
To prevent Ships Bottoms being injured by Marine Worms.-The species
of cloth called fearnought, or any other cloth of similar fabric, must be
impregnated with a solution of arsenic and copper in any menstruum, and
then boiled in water with coloquintida, afterwards dryed and diped in balsam
of sulphur, made with animal oil. The ship's bottom must be entirely covered
with the prepared cloth, and upon that sheathing board must be nailed and
payed in the usual manner.
In witness whereof, I, the said Humphry Jackson, have hereunto set my
hand and seal, the Thirtieth day of March, in the year of our Lord
One thousand seven hundred and sixty-nine, and in the ninth year of
the reign of our Sovereign Lord George the Third, by the grace of
God of Great Britain, France, and Ireland King, Defender of the
Faith, and so forth.
last above said, the aforesaid Humphry Jackson came before our said Lord
the King in His Chaucery, and acknowledged the Instrument aforesaid, and
all and every thing therein contained and specified, in form above written.
And also the Instrument aforesaid was stampt according to the tenor of the
Statute made in the sixth year of the reign of the late King and Queen
William and Mary of England, and so forth.
Inrolled the Fifth day of April, in the year last above written.