IMPROVEMENTS IN COATING METAL TUBES
Year: 1852

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN JAMES
RUSSELL, of Wednesbury, in the County of Stafford, Patent Tube Manu-
facturer, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Twenty-second day of
May, One thousand eight hundred and fifty-two, in the fifteenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said John James Russell, my exors, admors, and assigns, Her especial licence,
full power, sole privilege and authority, that I, the said John James Russell,
my exors, admors, and assigns, or such others as I, the said John James
Russell, my exors, admors, or assigns, should at any time agree with, and no
others, from time to time and at all times during the term of years therein
expressed, should and lawfully might make, use, exercise, and vend, within
England, Wales, and the Town of Berwick-upon-Tweed, my Invention of
"IMPROVEMENTS IN COATING METAL TUBES;" in which said Letters Patent is
contained a proviso that I, the said John James Russell, shall cause a par-
ticular description of the nature of my said Invention, and in what manner the
same is to be performed, by an instrument in writing under my hand and
seal, to be inrolled in Her said Majesty's High Court of Chancery within six
calendar months next and immediately after the date of the said in part
recited Letters Patent, as in and by the same, reference being thereunto had
will more fully and at large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
John James Russell, do hereby declare that the nature of my said Invention,
and the manner in which the same is to be performed, are fully described and
ascertained in and by the following statement thereof, that is to say:-
My Invention consists of coating the surfaces of iron tubes with gutta
percha, or gutta percha combined with other materials, particularly the exterior
surfaces of iron tube which have been interiorly coated with enamel.
And in order that the Invention may be most fully understood and readily
carried into effect, I will proceed to describe the means pursued by me. Iron
tubes have lately been greatly improved by coating the interior surfaces
thereof with enamel, according to an Invention for which Letters Patent
have been granted; and although my Invention is applicable to the coating of
the surfaces of iron tubes, whether their interior surfaces have been enamelled
or not, still it is of great importance to iron tubes so prepared, and the
object of my Invention is in such cases to preserve the exterior surfaces from
oxidation. In carrying out my Invention I prefer to use gutta percha alone
in a state of solution, and having rubbed the surfaces of the tubes clean, which
are to be coated, I apply the coating by means of a brush, or in place thereof,
and when only the exterior surface of a tube is to be coated, I stop the two
ends, and immerse the tube in or pass it through a bath of a solution of gutta
percha, by which a coating of the same will be obtained, and I repeat such
coatings till I obtain the thickness of gutta percha desired, allowing an interval
of time between the successive coatings in order that the solvent of the gutta
percha of the previous coating may be evaporated before applying a further
coating, and when the interior and exterior surfaces are to be coated, I
proceed in like manner to that above described, omitting to stop the ends of
the tubes, so that the solution may adhere to the interior as well as the
exterior surfaces, and in order to keep the solution fluid I make the vessel
double, or otherwise apply steam or other heat.
In using tubes so coated I find it desirable to apply one or more coatings of
gutta percha over the joints when the tubes have been screwed together. By
such means not only are the screws and couplings preserved from oxidization,
but the joints are prevented leaking.
I would remark that I prefer to employ gutta percha alone, but india-
rubber or other gum or matter, such as is sometimes combined with gutta
percha, may be used therewith.
Having thus described the nature of my said Invention, and the best means
I am acquainted with for performing the same, I would have it understood
that I do not confine myself to the details as herein explained; but what I

page_text: claim is, the coating of iron tubes with gutta percha, or gutta percha combined
with other materials.
In witness whereof, I, the said John James Russell, have hereunto set
my hand and seal, this Fifteenth day of November, One thousand eight
hundred and fifty-two.
JUHN
DAMS,
Solicitor, Darlaston.
AND BE IT REMEMBERED, that on the Fifteenth day of November, in
the year of our Lord 1852, the aforesaid John James Russell, came before
our said Lady the Queen in Her Chancery and acknowledged the Specification
aforesaid, and all and everything therein contained and specified in form
above written. And also the Specification aforesaid was stamped according to
the tenor of the Statute made for that purpose.
Enrolled the Twentieth day of November, in the year of our Lord, One
thousand eight hundred and fifty-two.