IMPROVEMENTS IN PUDDLING FURNACES
Year: 1884

page_text: I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & C° Patent Agents,
Southampton Buildings, London in the County of Middlesex do hereby declare.the
nature of said Invention for "IMPROVEMENTS IN PUDDLING FURNACES" to be as
follows:-
:
This Invention relates to puddling furnaces, and comprises the improvements
hereinafter described.
The said Invention is illustrated in the accompanying Drawing in which
Figure 1 is a longitudinal section, and
Figure 2 is a section on the line X X of the furnace.
The puddling furnace consists mainly of the furnace A, the air-heating chamber B,
the fire-bridge C and the puddling hearths D D.`
The fuel is introduced into the furnace A at a. The said furnace bas an inclined
grate b, below which the chamber B is situated. The said chamber is hermetically
closed at its front end by the plate c and at its other sides by the surrounding
brick work d. The steam jet blower e placed at the side of the furnace forces the
air into the chamber B (which also serves as an ashpit) from whence it proceeds
partly through the grate b, for the purpose of generating the gases of combustion,
but mainly through the passages ffinto the double vault g g from whence it finds
its exit at h and here meets the gases proceeding from the furnace A. The mixture
then passes into the double pudding hearth D. The air is therefore previously:
heated, partly in the chamber B and partly in the flues f surrounding the furnace A
and in the double vault g at the top of the furnace.
The fire bridge C separates the furnace A from the puddling hearth D D.
The puddling hearth D D is quadruple, that is to say, it consists of two double
chambers not separated from each other, each of which has two opposite doors o, p,
of which the larger one p is employed for charging the furnace with pig iron and
for removing the blooms.
The linings of the furnace A and puddling hearth D D., as well as the vault g,
are made of refractory material.
For lining the parts not exposed to great heat ordinary bricks are employed.
The gases proceeding from the hearth D pass through the flue q beneath the
steam boiler r whereby the waste heat is utilized.
Dated this 25th day of February 1884

page_text: Southampton Buildings, London, in the County of Middlesex do hereby declare
the nature of my Invention for "IMPROVEMENTS IN PUDDLING FURNACES" and
in what manner the same is to be performed, to be particularly described and
⚫ ascertained in and by the following statement:-
* 3
This Invention relates to puddling furnaces and comprises the improvements
hereinafter described.
The said Invention is illustrated in the accompanying Drawing in which
Figure 1 is a side elevation.
Figure 2 is a section on the line 5-5 Figure 3.
Figures 3, 4 and 6 are sections on the lines 1-1, 2-2, and 3-3 Figure 2.
Figure 5 is a section on the line 4-4 Figure 3.
The puddling furnace' shown in the Drawing and embodying the present
improvements consists mainly of the furnace A, the air heating chamber B, the fire
bridge C, the puddling 'hearths D D, and the casing E.
#
The fuel is introduced into the furnace A at a. The furnace has an inclined
grate b below which the chamber B is situated. This chamber is hermetically
closed at its front end by the plate c and at its other end and sides by the
surrounding brickwork d. The steam jet blower e placed at the side of the
furnace forces the air into the chamber B (which also serves as an ashpit) whence
it proceeds partly through the grate 6 for the purpose of generating the gases of
combustion and partly through the passages ff into the double vault g g from
which it finds its exit at h and here meets the gases proceeding from the furnace A.
The mixture then passes into the double puddling hearths D D.
The air is therefore heated partly in the chamber B, partly in the passages f
surrounding the furnace A, and partly in the double vault g at the top of the
furnace.
The fire-bridge C separates the furnace A from the puddling hearths D D.
The puddling hearths D D consist of the cast-iron bed plates i and are surrounded
by the side-plates k and channels ll m, and n; the side plates k being uncovered
on their outer sides are kept cool by their contact with the outer air. The channels
are cooled by water.
The puddling hearths D D are quadruple, that is to say, they consist of two
double chambers not separated, from each other, each of which has two opposite
doors o, p, of which the larger one p is employed for charging the furnace with pig
iron and for removing the blooms.
The linings of the furnace A and of the puddling hearths D D, as well as of the
vault g, are made of refractory material. For lining the parts not exposed to great
heat ordinary bricks are employed.
The gases proceeding from the hearths D D pass through the flue g beneath the
steam-boiler whereby the waste heat is utilized. The casing E consists of cast
iron plates held together by suitable fastenings.
. Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is:
First. The puddling furnace with two or more double puddling hearths D D not
separated from each other and having the mutual furnace A B, substantially as
described and shown in the accompanying Drawing.

page_text: Second. The combination of the blower e with the chamber B closed at c and d
and with the air passages f f and double vault g, substantially as described and
shewn in the accompanying Drawing, whereby part of the compressed air contained
in the chamber B beneath the grate is caused to pass through the furnace A while
another part thereof is caused to pass through the heated passages and vault g.
Dated this 17th day of July 1884
HASELTINE, LAKE & Co.,
For the Applicant.