IMPROVEMENTS IN PREPARING PROVISIONAL SPECIFICATION
Year: 1864

page_text: LETTERS PATENT to George Henry Harrington, of Leadenhall Street, in
the City of London, Naval Architect, and Henry Hewetson, junior, and
Francis Yates Hewetson, of Old Fish Street, in the same City, Sail
Cloth Manufacturers, for the Invention of "IMPROVEMENTS IN PREPARING
PROVISIONAL SPECIFICATION left by the said George Henry Harrington,
Henry Hewetson, and Francis Yates Hewetson at the Office of the
Commissioners of Patents, with their Petition, on the 29th September
1864.
We, GEORGE HENRY HARRINGTON, of Leadenhall Street, in the City of
London, Naval Architect, and HENRY HEWETSON, junior, and FRANCIS YATES
HEWETSON, of Old Fish Street, in the same City, Sail Cloth Manufacturers, do
Lereby declare the nature of the said Invention for "IMPROVEMENTS IN PRE-
PARING THREADS AND YARNS TO BE EMPLOYED IN THE MANUFACTURE OF SAIL CLOTH,"
to be as follows:-
The object of our Invention is to prevent sail cloths from rotting, and also to
increase their durability.
Our Invention consists in applying to the threads and yarns used in the
manufacture of sail cloth, whether by steeping or otherwise, and prior to their
being woven, a mixture of the following ingredients, and in or. about the

page_text: proportions stated:-112 lbs. catechu, 112 lbs. ochre, 40 lbs. oil or fat, 2
gallons tar, boiled in 400 gallons of water, and the whole thoroughly mixed.
These form the best ingredients for our preparation, but we sometimes employ
other similar tanning mixtures.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George Henry Harrington, Henry Hewetson, and Francis
Yates Hewetson, in the Great Seal Patent Office on the 29th March
1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, wė, GEORGE
HENRY HARRINGTON, of Leadenhall Street, in the City of London,. Naval
Architect, and HENRY HEWETSON, junior; and FRANCIS YATES HEWETSON, of
Old Fish Street, in the same City, Sail Cloth Manufacturers, send greeting..
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-ninth day of September, in the year of our
Lord One thousand eight hundred and sixty-four, in the twenty-eighth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto us,
the said George Henry Harrington, Henry Hewetson, and Francis Yates
Hewetson, Her special licence that we, the said George Henry Harrington,
Henry Hewetson, and Francis Yates Hewetson, our executors, administrators,
and assigns, or such others as we, the said George Henry Harrington, Henry
Hewetson, and Francis Yates Hewetson, our executors, administrators, and
assigns, should at any time agree with, and no others, from time to time
and at, all times thereafter during the term therein expressed, should and
lawfully might make, use, exercise, and vend, within the United Kingdom of
Great Britain and Ireland, the Channel Islands, and Isle of Man, an Inven-
tion for "IMPROVEMENTS IN PREPARING THREADS AND YARNS TO BE EMPLOYED IN
THE MANUFACTURE OF SAIL CLOTH," upon the condition (amongst others) that
we, the said George Henry Harrington, Henry Hewetson, and Francis Yates
Hewetson, or one of us, our executors or administrators, by an instrument in
_writing under our, or one of our or their, or one of their hands and seals,
should particularly describe and ascertain the nature of the said Invention,
and in what manner the same was to be performed, and cause the same to
be filed in the Great Seal Patent Office within six calendar months.next and
immediately after, the date of the said Letters Patent. :
NOW KNOW YE, that we, the said George Henry Harrington, Henry.
Hewetson, and Francis Yates Hewetson, do hereby declare the nature of

page_text: our said Invention, and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement
thereof, that is to say :-
The object of our Invention is to prevent sail cloths from rotting, and also to
increase their durability.
Our Invention consists in applying to the threads and yarns used in the
manufacture of sail cloth, whether by steeping or otherwise, and prior to their
being woven, a mixture of the following ingredients, and in or about the
proportions stated:
:-
112 lbs.
112
40
-
"
"
2 gallons
catechu,
ochre,
oil or fat,
-
of tar,
-
boiled in 400 gallons of water, and the whole thoroughly mixed. These form
the best ingredients for our preparation, but we sometimes employ other
similar tanning mixtures.
In witness whereof, we, the said George Henry Harrington, Henry
Hewetson, and Francis Yates Hewetson, have hereunto set our hands
and seals, this Twenty-seventh day of March, One thousand eight
hundred and sixty-five.
G. H. HARRINGTON.
(L.S.)
HENRY HEWETSON, JUN³. (L.S.)
F. Y. HEWETSON.
(L.S.)
G. H. HARRINGTON.
(L.S.)
HENRY HEWETSON, JUN. (L.S.)
F. Y. HEWETSON.
F. Y.
(L.S.)