IMPROVE- MENTS IN THE CONSTRUCTION OF ARMOUR PLATES POR SHIPS AND FORTS, AND APPLICABLE TO OTHER LIKE PURPOSES
Year: 1862

page_text: LETTERS PATENT to John Henry Johnson, of 47, Lincoln's Inn Fields,
in the County of Middlesex, and of 166, Buchanan Street, in the City
of Glasgow, North Britain, Gentleman, for the Invention of "IMPROVE-
MENTS IN THE CONSTRUCTION OF ARMOUR PLATES POR SHIPS AND FORTS, AND
APPLICABLE TO OTHER LIKE PURPOSES."-A communication from abroad by
Filip Bergendal; of Garpenberg, in the Kingdom of Sweden.
Sealed the 3rd February 1863, and dated the 6th August 1862.
PROVISIONAL SPECIFICATION left by the said John Henry Johnson at
the Office of the Commissioners of Patents, with his Petition, on the
6th August 1862.
I, JOHN HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of
Middlesex, and of 166, Buchanan Street, in the City of Glasgow, North
Britain, Gentleman, do hereby declare the nature of the said Invention
for." IMPROVEMENTS IN THE CONSTRUCTION OF ARMOUR PLATES FOR SHIPS AND FORTS,
AND APPLICABLE TO. OTHER LIKE PURPOSES," a communication to me from abroad
by Filip Bergendal, of Garpenberg, in the Kingdom of Sweden, to be as
follows:-
This Invention consists in making armour plates of several laminæ, but in
lieu of connecting the whole of such plates together by bolts passing through
the entire series, it is proposed to couple only the contiguous ones"; "thus, if
four plates or lamina be employed, Number 1 will be bolted, rivetted, or

page_text: otherwise secured to Number 2, which in its turn is similarly (secured to
Number 8; this plate being secured to Number 4 plate, and so on throughout
any desired number of plates.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Henry Johnson in the Great Seal Patent Office on
the 6th February 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of Middlesex,
and of 166, Buchanan Street, in the City of Glasgow, North Britain, Gentleman,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Sixth day of August, in the year of our Lord One
thousand eight hundred and sixty-two, in the twenty-sixth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
John Henry Johnson, Her special license that I, the said John Henry
Johnson, my executors, administrators, and assigns, or such others as I, the
said John Henry Johnson, my executors, administrators, or 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 "IMPROVE-
MENTS IN THE CONSTRUCTION OF ARMOUR PLATES FOR SHIPS AND FORTS, AND APPLI-
CABLE TO OTHER LIKE PURPOSES," a communication from abroad by Filip
Bergendal, of Garpenberg, in the Kingdom of Sweden, upon the condition
(amongst others) that I, the said John Henry Johnson, my executors or
administrators, by an instrument in writing under my hand and seal, or under
the hand and seal of one of them, 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 John Henry Johnson, do hereby
declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and by the.
following statement, reference being had to the accompanying Drawings and.
to the letters and figures marked thereon, that is to say :—

page_text: The said Invention consists in making armour plates of several laminæ, but
in lieu of connecting the whole of such plates together by bolts passing
through the entire series, it is proposed to couple only the contiguous ones;
thus, if four plates or laminæ be employed, Number 1 will be bolted, rivetted,
or otherwise secured to Number 2, which in its turn is similarly secured to
Number 8; this plate being secured to Number 4 plate, and so on throughout
any desired number of plates. The accompanying Drawing represents a
section of an armour plate constructed in the manner above described.
1, 2, 3, 4 are the several component plates secured each to its adjoining
plate by the three series of rivets a, b, and c. Any number of plates may be
thus rivetted or bolted together to produce an armour plate of the strength
desired.
Having now described and particularly ascertained the nature of the said
Invention, and the manner in which the same is or may be used or carried
into effect, I would observe in conclusion that what I consider to be novel
and original, and therefore claim as the Invention secured to me by the herein-
before in part recited Letters Patent is, the peculiar construction of armour
plates for ships, forts, and other like purposes, as herein-before described.
In witness whereof, I, the said John Henry Johnson, have hereunto set
my hand and seal, this Fourth day of February, One thousand eight
hundred and sixty-two.