IMPROVE- MENTS IN FURNACES OR CUPOLAS USED FOR MELTING IRON AND OTHER METALS
Year: 1874

page_text: LETTERS PATENT to William Blackett Haigh and Adam Bleasby, of
Oldham, in the County of Lancaster, for the Invention of "IMPROVE-
MENTS IN FURNACES OR CUPOLAS USED FOR MELTING IRON AND OTHER
METALS."
PROVISIONAL SPECIFICATION left by the said William Blackett
Haigh and Adam Bleasby at the Office of the Commissioners of
Patents, with their Petition, on the 13th February 1874.
We, WILLIAM BLACKETT HAIGH and ADAM BLEASBY, of Oldham, in
the County of Lancaster, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN FURNACES OR CUPOLAS USED FOR MELTING
IRON AND OTHER METALS" (to be as follows) :—
This Invention relates to those furnaces or cupolas having receivers
or chambers into which the metal runs as it is melted, and in the
furnaces used at present the flame and heat passes from the receivers
through a pipe or flue to the atmosphere.

page_text: Our Invention consists in dispensing with the pipe leading to the
atmosphere and fixing to the receiver near the cupola or furnace one or
more vertical taper pipes to which are fixed one or more horizontal or
inclined pipes leading to the interior of the cupola or furnace into the
coke above the tuyeres, by which means the heat which was before lost
assists to a great extent in melting the metal, and at the same time the
interior of the cupola is kept cleaner and the nuisance which at present
arises from the escape of the heat through the pipe open to the atmo-
sphere is entirely prevented, as by our Invention the heat is returned
into the interior of the cupola or furnace.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Blackett Haigh and Adam Bleasby, in th
Great Seal Patent Office on the 13th August 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
BLACKETT HAIGH and ADAM BLEASBY, of Oldham, in the County of:
Lancaster, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirteenth day of February, in the
year of our Lord One thousand eight hundred and seventy-four, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto us, the said William Blackett Haigh and
Adam Bleasby, Her special license that we, the said William Blackett
Haigh and Adam Bleasby, our executors, administrators, and assigns,
or such others as we, the said William Blackett Haigh and Adam
Bleasby, our executors, administrators, and assigns, should at time
agree with, and no others, from time to time and at all times there-
after 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 FURNACES OR CUPOLAS USED FOR MELTING IRON AND OTHER
METALS," upon the condition (amongst others) that we, the said William
Blackett Haigh and Adam Bleasby, our executors or administrators,
by an instrument in writing under our, 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

page_text: 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 we, the said William Blackett Haigh and Adam
Bleasby, do hereby declare the nature of our said Invention, and in
what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement, reference being had
to the Figures on the accompanying Sheet of Drawings and to the letters
of reference marked thereon (that is to say):
This Invention relates to those furnaces or cupolas having receivers
or chambers into which the metal runs as it is melted, each furnace as
at present constructed having a pipe, flue, or chimney through which
the flame and heat pass to the atmosphere.
Our Invention consists in dispensing with the pipe, flue, or chimney
leading to the atmosphere and fixing to the receiver near the furnace
one or more pipes or passages communicating with openings leading to
its interior into the coke above the tuyeres, by which means the heat
which was before lost assists to a great extent in melting the metal, and
at the same time the interior of the furnace is kept cleaner, and the
nuisance which at present arises from the escape of the heat through
the pipe, flue, or chimney is entirely prevented, as by our Invention the
heat is returned into the interior amongst the ignited fuel.
On the accompanying Sheet of Drawings Fig. 1 is a vertical section
and Fig. 2 a plan of a furnace and receiver provided with one arrange-
ment of our improvements.
a represents the furnace; b, the sole; c, the tuyeres; d, the receiver;
e, the passage leading from the furnace to the receiver; and f, a pipe or
passage leading from the receiver to a lined hole g in the brickwork and
shell of the furnace, which hole opens into the interior of the furnace
into the coke. The pipef may be of any desired shape and be made of
sand only or of metal or brickwork lined with sand or other material,
but we prefer it to be curved with a bore tapering from a larger
diameter at the receiver to a smaller one at the furnace, and at the top
of the pipe there is a short pipe or nozzle / lined with fire-clay or
gannister sand so as to leave a passage which can be open for a short
time after the commencement of the blast to allow the escape of gases
and be closed by the plug i during the melting of the metal, and at the

page_text: back of the pipe ƒ there is a nozzle or short pipe in line with the
passage or opening g, the passage of the pipe being closed with sand
during the melting of the metal and only opened when the passage g
has to be cleaned.
Having now described the nature and particulars of our said Inven-
tion we desire it to be understood that in furnaces or cupolas having
receivers for receiving the molten metal, we claim the employment of
one or more pipes or passages made of sand only or of metal or brick-
work lined with sand, fire-clay, or other suitable material leading from
the receiver to the furnace for the purpose of enabling the heat in the
receiver to be returned into the furnace and thereby effect economy of
fuel and lessen the time required for smelting.
In witness whereof, we, the said William Blackett Haigh and
Adam Bleasby, have hereunto set our hands and seals, this
Eleventh day of August, in the year of our Lord One thousand
eight hundred and seventy-four.
WILLIAM BLACKETT HAIGH. (L.S.)
ADAM BLEASBY.
(L.S.)
Signed, sealed, and delivered by the
within-named William Blackett
Haigh and Adam Bleasby, in the
presence of
G. SEPTIMUS HUGHES,
Patent Agent,
Manchester.