IMPROVEMENTS IN THE MANUFACTURE OF TIN AND TERNE PLATES AND IN MACHINERY THEREFOR.
Year: 1871

page_text: LETTERS PATENT to Arthur Gilbertson, of Pontardawe Tin Plate
Works, Swansea, in the County of Glamorgan, for the Invention
of "IMPROVEMENTS IN THE MANUFACTURE OF TIN AND TERNE PLATES AND
IN MACHINERY THEREFOR.
"
Sealed the 22nd May 1872, and dated the 6th December 1871.
'
PROVISIONAL SPECIFICATION left by the said Arthur Gilbertson at
the Office of the Commissioners of Patents, with his Petition, on
the 6th December 1871.
I, ARTHUR GILBERTSON, of Pontardawe Tin Plate Works, Swansea,
in the County of Glamorgan, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN THE MANUFACTURE OF TIN AND TERNE PLATES
AND IN MACHINERY THEREFOR," to be as follows:-
- Heretofore it has been the custom in the manufacture of tin and
terne plates to remove the surplus metal by passing them through or
between rollers made of solid metal, but to get these solid rollers to

page_text: the required temperature it has been necessary to bring the metal or
flux contained in the bath in which the rollers are placed to a high
temperature, thereby wasting oil and time as well as causing incon-
venience.
Now my Invention consists in the employment of hollow rollers |
instead of solid rollers, as heretofore. I make the hollow rollers by
preference of welded iron, but other substance may be used, such as
cast steel. The surface or surfaces is or are polished in a lathe or other
suitable manner, and if preferred are prepared by being immersed in a
bath of sulphuric acid. The rollers being hollow rapidly acquire the
temperature of the pot in or upon which they are placed, whereby the
necessity of overheating the metal, oil, fatty matter, or flux is avoided,
the consumption of oil is saved, and a more beautifully coloured plate
is obtained.
Rollers made according to my Invention are especially useful in the 1
manufacture of terne plates, where it is important to work with the oil
above the nip of the rollers and at the lowest possible temperature.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Arthur Gilbertson in the Great Seal Patent Office
on the 5th June 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ARTHUR
GILBERTSON, of Pontardawe Tin Plate Works, Swansea, in the County
of Glamorgan, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Sixth day of December, in the year of
of our Lord One thousand eight hundred and seventy-one, in the thirty-
fifth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Arthur Gilbertson, Her special licence that
I, the said Arthur Gilbertson, my executors, administrators, and assigns,
or such others as I, the said Arthur Gilbertson, my executors, adminis-
trators, and assigns, should at any time agree with, and no others,
from time to time and at all times thereafter during the term therein

page_text: 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 TIN AND TERNE PLATES AND IN MACHINERY THEREFOR,'
" upon
the condition (amongst others) that I, the said Arthur Gilbertson, my
executors or administrators, by an instrument in writing under my,
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 Arthur Gilbertson, 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 :-
Heretofore it has been the custom in the manufacture of tin and
terne plates to remove the surplus metal by passing them through or
between rollers made of solid metal, but to get these solid rollers to the
required temperature it has been necessary to bring the metal or flux
contained in the bath in which the rollers are placed to a high tem-
perature, more especially in the manufacture of terne plates, thereby
wasting oil and time as well as causing inconvenience.
Now my Invention consists in the employment of hollow rollers
instead of solid rollers, as heretofore. I make the hollow rollers by
preference of welded iron, but other substance may be used, such as
cast steel. The surface or surfaces is or are polished in a lathe or other
suitable manner, and if preferred are prepared by being immersed in a
bath of sulphuric acid. The rollers being hollow more rapidly acquire
the temperature of the pot in or upon which they are placed, and will
heat at the ordinary working temperature of the pot, whereby the
necessity of overheating the metal, oil, fatty matter, or flux is avoided,
the consumption of oil is saved, and a more beautifully coloured plate
is obtained.
Rollers made according to my Invention are especially useful in the
manufacture of terne plates, where it is important to produce a good
durable terne plate to work with the oil above the nip of the rollers and
at the lowest possible temperature, while the value of my Invention

page_text: in the manufacture of tin plates chiefly consists in the hollow roller
being a cheaper article than the solid roller. The rollers may be made
of any required length, according to the plates to be manufactured.
Having now described the nature of the said Invention, and in
what manner the same is to be performed, I declare that I claim, the
manufacture of tin and terne plates in and by the employment of hollow
rollers for the purposes herein-before set forth.
In witness whereof, I, the said Arthur Gilbertson, have hereunto
set my hand and seal, this Third day of June, in the year of
our Lord One thousand eight hundred and seventy-two.