IMPROVEMENTS IN ANNEALING POTS, BOXES, STANDS, AND RETORTS
Year: 1874

page_text: LETTERS PATENT to John Walter Morgan, of Garth Works, Cardiff,
in the County of Glamorgan, Engineer, for the Invention of
“IMPROVEMENTS IN ANNEALING POTS, BOXES, STANDS, AND RETORTS.”
Sealed the 30th April 1875, and dated the 7th November 1874.
PROVISIONAL SPECIFICATION left by the said John Walter Morgan at
the Office of the Commissioners of Patents, with his Petition, on
the 7th November 1874.
I, JOHN WALTER MORGAN, of Garth Works, Cardiff, in the County
of Glamorgan, Engineer, do hereby declare the nature of the said In-
vention for "IMPROVEMENTS IN ANNEALING POTS, BOXES, STANDS, AND RETORTS,”
to be as follows:-
According to this Invention the centre of the sides and ends, also the
corners of the articles enumerated in the title, are rounded so as to avoid
sharp angles. The top is slightly arched and rounded into the sides.
Around the pot or box transversely, and conjugately through the centre
of the planes, is a recessed band. The said band meets in the centre of the
top. Under the top and inside a rib or bridge is cast or made to prevent
J

page_text: the top from collapsing when under the action of heat. In order to allow
for the extreme contraction and expansion to which such articles are sub-
jected a cutting iron of suitable form and dimensions is inserted through
the extreme width of the top and partly down the sides, or the same
may be split through the extreme length of the top, and partly down 5
the ends, cutting irons being also introduced into the flanges of the
stand, and partly through the bottom.
The materials of which such articles may be composed are cast iron,
by preference Bessemer, hematite, plumbago, fire-clay, China clay, or
any material capable of withstanding the action of heat, or the same 1
may be made in wrought iron, when the top or lid may be welded to
the side.
In some cases I divide the pot, box, stand, or retort, which may be of
oblong or other shape, into sections, forming or casting flanges on such,
and joining same together by pins or dovetails of suitable form and 1
dimensions, the peculiar shape of the articles adding greatly to their
strength and durability.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Walter Morgan in the Great Seal Patent
Office on the 7th May 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
WALTER MORGAN, of Garth Works, Cardiff, in the County of Gla-
morgan, Engineer, send greeting..
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventh day of November, in the
year of our Lord One thousand eight hundred and seventy-four, in the
thirty-eighth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said John Walter Morgan, Her
special licence that I, the said John Walter Morgan, my executors,
administrators, and assigns, or such others as I, the said John Walter {
Morgan, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all timės thereafter
during the term therein expressed, should and lawfully might make,
_ use, exercise, and vend, within the United Kingdom of Great Britain-

page_text: and Ireland,. the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN ANNEALING POTS, BOXES, STANDS, AND RETORTS," upon the
condition (amongst others) that I, the said John Walter Morgan, 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.
1
NOW KNOW YE, that I, the said John Walter Morgan, do hereby
declare the nature of my 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:-
According to this Invention the centre of the sides and ends, also the
corners of the articles enumerated in the title, are rounded so as to avoid
sharp angles. The top is slightly arched, and rounded into the sides.
Around the pot or box transversely, and conjugately through the centre
of the planes, is a recessed band. The said hand meets in the centre of
the top. Under the top and inside a rib or bridge is cast or made to
prevent the top from collapsing when under the action of heat. In
order to allow for the extreme contraction and expansion to which such
articles are subjected a cutting iron of suitable form and dimensions is
inserted through the extreme width of the top and partly down the
sides, or the same may be split through the extreme length of the top,
and partly down the ends, cutting irons being also introduced into the
flanges of the stand, and partly through the bottom.
The materials of which such articles may be composed are cast iron,
by preference Bessemer, hematite, plumbago, fire-clay, China clay, or
any material capable of withstanding the action of heat, or the same
may be made in wrought iron, when the top or lid may be welded to
the side.
In some cases I divide the pot, box, stand, or retort, which may be of
oblong or other shape, into sections, forming or casting flanges on such,
and joining same together by pins or dovetails of suitable form and
dimensions, the peculiar shape of the articles adding greatly to their
strength and durability.
My Invention will be clearly understood on reference to the accom-

page_text: panying Drawings, which give front elevation, section at B, C, section
at D, E, section at C, D, and plan of one of my annealing boxes.
Figures 1, 2, 3, 4, 5, 6 show different forms of cutting irons, which
may be used for separating the castings.
I also make annealing boxes or retorts of any depth by casting or 5
forming around the upper part a grooved flange, so that two or more
parts may be placed on each other, the lid being cast separately, made
in wrought iron or other suitable material, having a rib or flange on
its under part, which fits into the groove of the box, the joint being
made by sand or cement. Annealing boxes or retorts of a large size 1
I make in sections, rivetting or bolting same together, the flanges
being made or formed so as to admit the use of a sand joint.
Having thus described the nature of my said Invention, and the mode
of carrying same into effect, I declare that I claim as my Invention
in annealing pots, boxes, stands, and retorts,—
Firstly. The improvements herein-before described, and as shown in
the accompanying Drawings.
Secondly. I claim the different forms of cutting irons shown in the
Drawings when used in connection with my improved boxes for
separating the castings, substantially as set forth.
In witness whereof, I, the said John Walter Morgan, have here-
unto set my hand and seal, this Fifth day of May, One thousand
eight hundred and seventy-five.
JOHN W MORGAN Gol
1