IMPROVEMENTS IN THE POTS EMPLOYED IN THE MANUFACTURE OF TIN AND OTHER PLATES
Year: 1868

page_text: LETTERS PATENT to Thomas Evan Williams, of Newport, in the
County of Monmouth, Civil Engineer, for the Invention of
"IMPROVEMENTS IN THE POTS EMPLOYED IN THE MANUFACTURE OF TIN AND
OTHER PLATES."
Sealed the 8th December 1868, and dated the 10th June 1868.
PROVISIONAL SPECIFICATION left by the said Thomas Evan Williams
at the Office of the Commissioners of Patents, with his Petition,
on the 10th June 1868.
I, THOMAS EVAN WILLIAMS, of Newport, in the County of Mon-
mouth, Civil Engineer, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN THE POTS EMPLOYED IN THE MANUFACTURE
OF TIN AND OTHER PLATES," to be as follows:-
My Invention relates to pots or crucibles employed in the manufacture
of tin and other plate for annealing the plates or sheets of iron previous
to coating or covering them with tin or alloy of tin, and the nature of
the said Invention consists in the peculiar shape or formation of the
annealing pots, whereby their strength and durability is greatly increased
without adding materially to their weight or cost.

page_text: Instead of making my improved pots square or rectangular in their
cross section with straight sides, as such pots have hitherto been con-
structed, I make them with curved sides and corners (or with curved
corners without the sides being curved), the same being either convex
or concave according to the nature of the work for which the pots are to
be used. The said pots may be constructed of iron, clay, plumbago, or
other suitable material.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas Evan Williams in the Great Seal Patent
Office on the 9th December 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
EVAN WILLIAMS, of Newport, in the County of Monmouth, Civil
Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Tenth day of June, in the year
of our Lord One thousand eight hundred and sixty-eight, in the thirty-
first year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Thomas Evan Williams, Her special
licence that I, the said Thomas Evan Williams, my executors, adminis-
trators, and assigns, or such others as I, the said Thomas Evan Williams,
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 POTS EMPLOYED IN THE MANUFACTURE OF TIN AND
OTHER PLATES," upon the condition (amongst others) that I, the said
Thomas Evan Williams, my executors or administrators, by an instru-
ment 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 Thomas Evan Williams, do hereby
declare the nature of my said Invention, and in what manner the same

page_text: is to be performed, to be particularly described and ascertained in and
by the following statement, reference being had to the accompanying
Sheet of Drawings forming a part of this Specification:---
My Invention relates to pots or crucibles employed in the manufacture
of tin and other plates for annealing the plates or sheets of iron previous
to coating or covering them with tin or alloy of tin, and the nature of
the said Invention consists in the peculiar shape or formation of the
annealing pots, whereby their strength and durability are greatly increased
without adding materially to their weight or cost.
Instead of making my improved pots square or rectangular in their
cross section with straight sides, as such pots have hitherto been con-
structed, I make them with curved corners or with curved sides and
corners, the interior of the sides being either convex or concave
according to the nature of the work for which the pots are to be used.
The said pots may be constructed of iron, clay, plumbago, or other
uitable material
Figure 1 is a plan of one of my improved annealing pots with its lid or
cover; Figure 2 is a side elevation of the same shewing the saucer or
stand; Figure 3 is a side elevation of a pot of modified form constructed
according to my Invention; Figure 4 is a section on the line x, x,
Figure 3. Like letters indicate the same parts throughout the
Drawing.
The pot a may be made of any desired size and of any suitable
material. The sides a, a, are curved and are made either convex inside
the pot, as shewn in Figure 1, or corrugated, as in Figure 4, or the
interior of the said sides may be made concave or otherwise curved or
formed with any desired number of corrugations. The corners 6 are
curved or rounded, as shewn, or formed with two or more curves or
corrugations. By thus curving or corrugating the sides and corners of
the pots the durability of the same is greatly increased as the curved
portions or corrugations of the said pots allow them to expand and con-
tract as they are heated and cooled, and thereby prevent the liability to
fracture to which ordinary annealing pots or crucibles with straight sides
and square corners are subjected. If desired the sides a¹ or a³, or both,
may be straight, and only the corners curved, but I prefer to construct
the pots with curved or corrugated sides.

page_text: My improved pots are provided with a saucer c and cover d, which
are preferably made to correspond in shape with the sides of the pot,
and which are applied thereto in the ordinary manner. The said pots
are also provided with the lugs or ears for other convenient means for
lifting them.
Having thus described my said Invention, and shewn how the same
may be conveniently and advantageously carried into practice, I claim,
constructing an annealing pot with the corners or the sides and corners
curved or corrugated for the purpose herein set forth.
In witness whereof, I, the said Thomas Evan Williams, have
hereunto set my hand and seal, this Ninth day of December,
in the year of our Lord One thousand eight hundred and sixty-
eight.
THOMAS EVAN WILLIAMS. (L.S.)
Witness,
GEORGE HASELTINE,
8, Southampton Buildings,
London.