IMPROVEMENTS IN THE CONSTRUCTION OF ANNEALING POTS FOR TIN PLATES
Year: 1880

page_text: LETTERS PATENT to Isaac Jones, of Swansea, in the County of Glamorgan,
Iron Founder, for an Invention of "IMPROVEMENTS IN THE CONSTRUCTION OF
ANNEALING POTS FOR TIN PLATES."
PROVISIONAL SPECIFICATION left by the said Isaac Jones at the Office of
the Commissioners of Patents on the 7th July 1880.
ISAAC JONES, of Swansea, in the County of Glamorgan, Ironfounder.
MENTS IN THE CONSTRUCTION OF ANNEALING POTS FOR TIN PLATES."
"IMPROVE-
My Invention has for its object the construction of annealing pots. in such a
manner as to increase their durability, and consists in making the top and sides of
the pot in separate parts, having the top formed hemispherical, elliptical, or dome-
shaped in its central part, and adapted to fit into a trough formed either inside or
outside the upper part of the pot.
:
The top of the pot is formed with an internal flange, which is inserted in a body
of sand or other suitable material contained in the said trough, and fixed therein.
as required.
Both the top and sides of the pot may be made either of cast or wrought iron.
When the sides of the pot are made of wrought iron, the said trough is formed
of "Z iron," of this or other suitable section ✓ riveted to the sides, and, when
cast iron is used this trough will be cast with the sides. Also the pot when made
with wrought iron sides can be strengthened at the lower part if required with a
band of angle iron riveted to the sides.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Isaac Jones in the Great Seal Patent Office on the 6th 'January
1881.
ISAAC JONES, of Swansea, in the County of Glamorgan, Iron Founder.
" IMPROVEMENTS IN THE CONSTRUCTION OF ANNEALING POTS FOR TIN PLATES."
My Invention of "Improvements in the Construction of Annealing Pots for Tin
Plates" has for its object the construction of annealing pots in such a manner as to
increase their durability, and consists in making the top and sides of the pot in
separate parts, having the top formed spherical in its centre part, or elliptical,
spheroidal, or dome shaped, or nearly so over the entire surface, and adapted to fit
into a trough formed either inside or outside the upper part of the pot, which
trough may be either cast with or fixed to the pot or separate, and put in loose,
or be formed as a recess between the upper part of the pot and the lower part of
the top or cover.
The top of the pot is formed with an internal flange, which is inserted in a body
of sand or other suitable material contained in the said trough and fixed therein
as required.
'
'
Both the top and sides of the pot may be made either of cast or wrought iron
or other suitable material. When the sides of the pot are made of wrought iron,
the said trough is formed of "Z" iron of this or other suitable section rivetted
to the sides, and when cast iron is used this trough will be cast with the sides.
Also the pot when made with wrought iron sides can be strengthened at the lower
part if required with a band of angle iron rivetted to the sides.
Having thus stated the nature of the said Invention, I will proceed to describe
more particularly in what manner the same is to be performed by the aid of the
accompanying Drawings, in which are represented several modes of carrying my
Invention into effect.
A is
Fig 1-is-a-transverse section of an annealing-pot-with-its-top or cover;-Fig-2-
is a longitudinal section; and Fig. 3, a plan or horizontal view of the same.
, the top or cover, which is loose and formed so as to project over the top edge of
the pot so as to protect it from the action of the flame. This top or cover is
spherical in the centre, as shewn, in order to increase its strength to resist the
downward pressure to which it is exposed in cooling. A is a' rib or flange on the
under side of the top or cover which projects therefrom into the trough C filled
with sand or other material to form a lute, as required; D is an angle iron band
rivetted to the pot B to prevent it from buckling:
Fig. 4 is a vertical section, and Fig. 5 a horizontal section (in the line 1, 2, of
Fig. 4) representing a pot with the trough outside and rivetted thereto, and with
the top or cover loose, and spheroidal in form, or nearly so.
Fig. 6 is a vertical section, and Fig. 7 a plan (with top or cover removed)
shewing the pot with an internal flange forming a trough C inside, the trough being
cast in one with the pot B. The inside flange and the bottom of the trough C are
slit at the corners, as shewn at C¹ in Fig. 7, in order to prevent the breaking of the
pot through unequal expansion and contraction.
Fig. 8 is a vertical section, and Fig. 9 a plan of the pot B with the top or
cover A removed. In this case the pot is formed with the trough C cast on the
outside of the pot. E is the stand for the tin plates intended to be annealed;
C¹, C, Fig. 9, are the slits in the trough in order to prevent breaking through
unequal expansion and contraction.

page_text: Fig. 10 is a plan of the stand E, shewing a slit in each corner of the raised flange
of the same; Fig. 11 is a section on the line 3, 4, of Fig. 10, shewing a slit F in
the flange F'.
Fig. 12 is a vertical section shewing the trough C cast separate from the pot B,
and resting upon an internal flange or projection B₁ cast on the inside of the
pot B, and shewing the stand E with a flange E¹ cast separate from the stand and
bolted thereto through the feet E².
And Fig. 13 is a vertical section representing the pot B, having an internal
flange or projection B', and its top or cover A of a spheroidal form, or nearly so,
with the edge flanged outwards, in order that it may rest on the projecting
flange B¹, a recess being formed at C, as shewn, and receiving sand or other lute
for the joint. By this arrangement the trough is dispensed with, thereby
diminishing the weight of the pot and economising the manufacture thereof.
In all the above illustrations of my Invention it will be seen that the top or
cover of the pot is made of suitable form to render it capable of resisting the
downward pressure when cooling; also that the liability of the pot to crack from
unequal expansion and contraction is prevented by the slits in the trough, and the
same defects are prevented by slits in the stand.
Having thus described the nature of the said Invention, and in what manner
the same is to be performed, I hereby declare that what I claim as of my Invention
is,―
First. The combination of the pot B and top or cover A, represented in Figures
1, 2, and 3, and described.
Secondly. The combination of the pot B and the top or cover A, represented in
Figures 4 and 5, and described.
Thirdly. The combination of the pot B and the top or cover A, represented in
Figures 6 and 7, and described.
Fourthly. The combination of the pot B and the top or cover A, represented in
Figures 8 and 9, and described.
Fifthly. The combination of the pot B and the top or cover A, represented in
Fig. 12, and described.
And, Lastly. The combination of the pot B and top or cover A, represented in
Fig. 13, and described.
In witness whereof, I, the said Isaac Jones, have hereunto set my hand and
seal, the First day of January, in the year of our Lord One thousand eight
hundred and eighty one.
'
TaCזIA
ISAAC JONES. (L.S.)
Iron Founder,
Vulcan Factory,
Strand,
Swansea,
Glamorganshire.