IMPROVEMENTS IN THE MAN
Year: 1868

page_text: LETTERS PATENT to Henry Clifford, of Greenwich, in the County of
Kent, Engineer, for the Invention of "IMPROVEMENTS IN THE MANU-
Sealed the 22nd June 1869, and dated the 24th December 1868...
PROVISIONAL SPECIFICATION left by the said Henry Clifford at the..
Office of the Commissioners. of Patents, with his Petition, on the
24th December 1868.
I, HENRY CLIFFORD, of Greenwich, in the County of Kent, Engineer,.
do hereby declare the nature of the said Invention. for "IMPROVEMENTS
IN THE MANUFACTURE OF SUBMARINE TELEGRAPH. CABLES," to be as follows:-
The object of my Invention is to protect the core of the cable from
the attacks of submarine insects, and the Invention consists in coating.
or serving the core with powdered silica; the silica is preferably made
to adhere to yarn or tape which has been previously steeped in tar or
pitch, or other suitable material, the yarn or tape being afterwards.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Henry Clifford in the Great Seal Patent Office on
the 24th June 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
CLIFFORD, of Greenwich, in the County of Kent, Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fourth day of December, in the
year of our Lord One thousand eight hundred and sixty-eight, in the
thirty-second year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Henry Clifford, Her special
licence that I, the said Henry Clifford, my executors, administrators,
and assigns, or such others as I, the said Henry Clifford, my 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 Invention for "IMPROVEMENTS IN
THE MANUFACTURE OF SUBMARINE TELEGRAPH CABLES," upon the condition
(amongst others) that I, the said Henry Clifford, my executors or ad-
ministrators, by an instrument in writing under 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 I, the said Henry Clifford, do hereby declare
the nature of my 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 my Invention is to protect the core of the cable from
the attacks of submarine insects, and the Invention consists in coating

page_text: or serving the core with powdered silica, the silica is preferably made to
adhere to yarn or tape which has been previously steeped in tar or pitch,
or other suitable material, the yarn or tape being afterwards wound
upon the core outside the usual serving of yarn. The core is afterwards
surrounded by the usual outer covering.
And having now described the nature of my said Invention and in
what manner the same is to be performed, I declare that I claim the
employment of powdered silica for coating or serving submarine
telegraph cables in the manner and for the purpose herein-before
described.
In witness whereof, I, the said Henry Clifford, have hereunto set
my hand and scal, this Twenty-fourth day of June, One thou-
sand eight hundred and sixty-nine.
HENRY CLIFFORD. (L.S.)