AN IMPROVEMENT IN THE MANUFACTURE OF GUN BARRELS, PIPES, AND TUBES
Year: 1854

page_text: Sealed the 11th May 1855, and dated the 14th November 1854.
PROVISIONAL SPECIFICATION left by the said Samuel Pearson at
the Office of the Commissioners of Patents, with his Petition, on the
14th November 1854.
I, SAMUEL PEARSON, of Woolwich, in the County of Kent, Engine Smith,
do hereby declare the nature of the said Invention for "AN IMPROVEMENT IN
THE MANUFACTURE OF GUN BARRELS, PIPES, AND TUBES," to be as follows:-
My Invention refers to the manufacture of twisted barrels and pipes.
According to the method of forming such barrels as now practised, a strip of
inetal is wound spirally round a centre, the edges of the strip forming butt or
scarf joints, which are found in practice to be faulty. Now, my improvement
consists in forming my barrels and pipes of two V-shaped strips of metal,
which are wound spirally round a centre, the base of the V in one strip being
placed nearest the centre, while the apex or narrow part of the upper V-shaped

page_text: piece is placed downward, or nearest the centre, whereby the spaces between
the first strip will be filled up, and after being rolled and welded in the usual
manner, or otherwise finished, will form a perfectly tight and solid barrel or
pipe. It will be evident that the under strip need not be of an exact V shape,
but the edge may be bevelled off, so that on two edges coming together, or
being wound spirally round a centre, a V-shaped aperture may be formed,
which can be filled up by a wedge-shaped rod or strip being spirally twisted
and laid therein.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Samuel Pearson in the Great Seal Patent Office on the
14th May 1855.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, SAMUEL
PEARSON, of Woolwich, in the County of Kent, Engine Smith, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourteenth day of November, in the year of our
Lord One thousand eight hundred and fifty-four, in the eighteenth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Samuel, Pearson, Her special licence that I, thes aid Samuel
Pearson, my executors, administrators, and assigns, or such others as I, the
said. Samuel Pearson, my executors, administrators, and assigns, should at
any time agree with, and no others, from time to time and at all times there-
after 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 "AN IMPROVEMENT
IN THE MANUFACTURE OF GUN BARRELS, PIPES, AND TUBES," upon the condition
(amongst others) that I, the said Samuel Pearson, by an instrument in writing
under my hand and seal, 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 Samuel Pearson, 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 thereof (that is to say):-

page_text: Having thus described the nature of my said Invention, and the manner of
performing the same, I would have it understood that what I claim is, the
manufacture of twist gun barrels, pipes, and tubes by employing
sided rods or strips, as herein described.
or three-
In witness whereof, I, the said Samuel Pearson, have hereunto set my
hand and seal, this 12th day of May, in the year of our Lord One
thousand eight hundred and fifty-five.
Witness,
EDWARD BROWN,
72, Wellngton St., Woolwich.
SAMUEL PEARSON. (L.s.)