IMPROVEMENTS TH BUD MAWNDAGENDE OF SPEARL ETEN
Year: 1871

page_text: LETTERS PATENT to Carl Johan Laurentz Leffler, of Sheffield, in tho
County of York, Iron Merchant, for the Invention of "IMPROVEMENTS
TH BUD
MAWNDAGENDE OF SPEARL ETEN "
Scaled the 20th February 1872, and dated the 2nd September 1871.
PROVISIONAL SPECIFICATION left by the said Carl Johan Laurentz
Leffler at the Office of the Commissioners of Patents, with his
Potition, on the 2nd September 1871.
I, CARL JOHAN LAURENTZ LEFFLER, of Sheffield, in the County of
York, Iron Merchant, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN THE MANUFACTURE OF 'SPIEGEL EISEN,'" to be as
follows:
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My Invention which relates to improvements in the manufacture of
'spiegel eisen" consists in charging a furnace of any known suitable
construction with an admixture of manganese and iron ore and coke or
charcoal and suitable fluxes, or with an admixture of any of the oxides
or of the chemical compounds of the metals manganese and iron together
with any other carbonaceous matter or (earthy) flux producing matter,

page_text: and in exposing the same admixture or charge to a sufficient and proper.
heat in order to bring about a reduction or a partial reduction of the
metals contained therein. After this reduction or partial roduction of
the contents of this furnace I cause molten pig iron from another furnace
to be run into and to pass through the said admixture or charge for the
purpose of absorbing or partially absorbing or combining with the
reduced or partially reduced metals; or the pig iron or iron or scrap steel
may be placed on the top of the aforesaid admixture or charge, or in a
separate place or chamber in the same furnace with the charge, so that
on being exposed to a sufficient heat it will be caused to melt down and 1
gradually to pass through the said admixture or charge, and to take up
or combine with the metals contained therein.
It will thus be seen that the improvements in the manufacture of
spiegel eisen consist in causing the molten pig iron or molten iron
or scrap steel to pass through a heated admixture of manganese, iron ore, 1
and coke or charcoal, or of any of the oxides of manganese and iron or
their chemical compounds, and of any other carbonaceous matter or flux
producing matter, whether the pig iron or iron or scrap steel be melted
in a separate furnace or in the same furnace containing the said
admixture or charge, with the object of making it absorb or combine 2
with the metals manganese and iron contained therein, and so to pro-
duce the improved manufacture of spiegel eisen.,
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Carl Johan Laurentz Leffler in the Great Seal
Patent Office on the 28th February 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CARL
JOHAN LAURENTZ LEFFLER, of Sheffield, in the County of York, Iron
Merchant, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Second day of September, in the year 3
of our Lord One thousand eight hundred and seventy-one, in the thirty-.
fifth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto mo, the said Carl Johan Laurentz Lefler, Her special.

page_text: licence that I, the said Carl Johan Laurentz Leffler, my executors,
administrators, and assigns, or such others as I, the said Carl Johan
Laurentz Leffler, 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 MANUFACTURE OF 'SPIEGEL EISEN,' upon
the condition (amongst others) that I, the said Carl Johan Laurentz
Leffler, 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 my 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 Carl Johan Laurentz Leffler, 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 in writing, that is to say :—
"
My Invention relating to improvements in the manufacture of
'spiegel eisen" consists in charging a furnace with an admixture of
manganese and iron ore and coke or charcoal and suitable fluxes, or with
an admixture of any of the oxides (or ores) or of the chemical com-
pounds of the metals manganese and iron together with any carbonaceous
matter, or with any earthy flux producing matter, and in exposing the
same admixture or charge to a sufficient and proper heat in order to
bring about a reduction or a partial reduction of the metals contained
therein. After this reduction or partial reduction of the contents of this
furnace, I cause molten pig iron from another furnace to be run into and
to pass through the said admixture or charge for the purpose of absorbing
or partially absorbing or combining with the reduced or partially reduced
metals, or the pig irons or scrap turnings and shearings or cuttings from
iron or steal may be placed on the top of the aforesaid admixture or
charge, or in a separate place or chamber in the same furnace with the
charge, so that on being exposed to a sufficient heat it will be caused to
melt down and gradually to pass through the said admixture or charge,
and to take up or combine with the metal contained therein.

page_text: It will thus be seen that my improvements in the manufacture of
spiegel eisen" consist in causing the molten pig iron, or the molten
product of the scrap turnings and shearings or cuttings from iron or steel
to pass through a heated admixture of manganese, iron ore, and coko or
charcoal or of any of the oxides or orcs of manganese and iron or their
chemical compounds and of any carbonaceous matter or flux producing
matter, whether the pig iron or the scrap turnings and shearings or
cuttings from iron or steel be melted in a separate furnace or in the
same furnace containing the said admixture or charge, with the object
of making it absorb or combine with the metals manganeso and iron
contained therein, and so to produce the improved manufacture of
"spiegel cisen."
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> ""
Having now described the nature and object of my said Invention for
* Improvements in the Manufacture of 'Spiegel Eisen,' together with
.the manner in which the same is to be or may be performed or carried
into practical effect, I would remark in conclusion that I claim as my
Invention, the improved method or process of manufacturing "spiegel
cisen," substantially in the manner hercin-before described, or any more
analogous variation or modification thereof having a similar object and
result.
In witness whereof, I, the said Carl Johan Laurentz Leffler, have
hereunto set my hand and scal, this Twenty-fourth day of
February, in the year of our Lord One thousand eight hundred
and soventy-two.
T T
מגד TTTAAT