IMPROVEMENTS IN THE TREATMENT OF ORES AND IN APPARATUS OR MEANS EMPLOYED THEREIN
Year: 1868

page_text: LETTERS PATENT to Astley Paston Price, of 47, Lincoln's Inn
Fields, in the County of Middlesex, Consulting Chemist, for the
Invention of "IMPROVEMENTS IN THE TREATMENT OF ORES AND IN
APPARATUS OR MEANS EMPLOYED THEREIN."
Sealed the 18th September 1868, and dated the 25th March 1868.
PROVISIONAL SPECIFICATION left by the said Astley Paston Price
at the Office of the Commissioners of Patents, with his Petition,
on the 25th March 1868.
I, ASTLEY PASTON PRICE, of 47, Lincoln's Inn Fields, in the County
of Middlesex, Consulting Chemist, do hereby declare the nature of my
said Invention for "IMPROVEMENTS IN THE TREATMENT OF ORES AND IN
APPARATUS OR MEANS EMPLOYED THEREIN," to be as follows, that is to
say :-
These improvements relate to the use of what are known as
.regenerative heating furnaces in conjunction with furnaces suitable for
the calcination and treatment of ores, compounds, or products in
calcining furnaces, or in similar furnaces or apparatus, so as to enable
the said ores, compounds, or products to be subsequently subjected to

page_text: metallurgical or chemical processes in order that products useful in
the arts may be advantageously obtained therefrom.
It is well known that in order to effect complete decomposition, or to
obtain perfect calcination, it is sometimes advantageous that the operation
should be conducted at a high temperature, and it is very desirable
under such circumstances and conditions that the atmospheric air,
vapours, or gases admitted for the purpose of oxidising or for the
treatment or conversion of the ores,
ores, compounds, or products
under treatment should be admitted and employed at an elevated
temperature.
Hitherto no economical or convenient method has been. adopted for
such purposes, and the object of this Invention is to employ in combina-
tion with calcining or similar furnaces, such as the ordinary calcining
furnaces, or with what are known as the Gerstenhofer furnaces, Patent
No. 2245, of 1863, or modifications thereof, an arrangement which may
be similar to that employed for the heating of air, vapours, or gases as
described in the Specification of a Patent granted to C. W. Siemens,
No. 1320, and dated 11th May 1857, or modifications thereof,, or such
an arrangement as is employed for the. heating of the blast for iron
furnaces, and described in the Specification of a Patent granted to
Edward A. Cowper, No. 1404, dated 19th May 1857, or modificatious
thereof, or any similar arrangement, so as to obtain air, vapours, or gases
at a high temperature for the purposes of calcining, salting, chlorinating,
or otherwise treating ores, compounds, or products in such before-
mentioned furnaces or modifications thereof..
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Astley Paston Price in the Great Seal Patent
Office on the 25th September 1868.
of 30
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ASTLEY
PASTON PRICE, of 47, Lincoln's Inn Fields, in the County
Middlesex, Consulting Chemist, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fifth day of March, in the year
of our Lord One thousand eight hundred and sixty-eight, in the thirty-first

page_text: year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said Astley Paston Price, Her special license
that I, the said Astley Paston Price, my executors, administrators,
and assigns, or such others as I, the said Astley Paston Price, my
executors, administrators, or 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
Ircland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN THE TREATMENT OF ORES AND IN APPARATUS OR MEANS EMPLOYED
THEREIN," upon the condition (amongst others) that I, the said Astley
Paston Price, by an instrument in writing under my hand and seal,
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.
NOW KNOW YE, that I, the said Astley Paston Price, 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, reference being had to the accompanying
Drawings, and to the letters and figures marked thereon, that is to
say:
My said Invention relates to the use of what are known as
regenerative heating furnaces in conjunction with furnaces suitable for
the calcination and treatment of ores, compounds, or products in calcining
furnaces, or in similar furnaces or apparatus, so as to enable the said ores,
compounds, or products to be subsequently subjected to metallurgical
or chemical processes in order that products useful in the arts may be
advantageously obtained therefrom.
It is well known that in order to effect complete decomposition or to
obtain perfect calcination it is sometimes advantageous that the
operation should be conducted at a high temperature, and it is very
desirable under such circumstances and conditions that the atmospheric
air, vapours, or gases admitted for the purpose of oxidizing or for
the treatment or conversion of the ores, compounds, or products
under treatment should be admitted and employed at an elevated
temperature.

page_text: Hitherto no economical or convenient method has been adopted for
such purposes, and the object of this Invention is to employ in combina-
tion with calcining or similar furnaces, such as the ordinary calcining
furnaces, or with what are known as the Gerstenhofer furnaces, or
modifications thereof, an arrangement which may be similar to that
employed for the heating of air, vapours, or gases as described in the
Specification of Patents granted to C. W. Siemens, No. 1320, and
dated Eleventh May One thousand eight hundred and fifty-seven, or
modifications thereof, or such an arrangement as is employed for the
heating of the blast for iron furnaces and described in the Specifi-
cation of a Patent granted to Edward A. Cowper, No. 1404, dated
Nineteenth May One thousand eight hundred and fifty-seven, or modifi-
cations thereof, or any similar arrangements, so as to obtain air vapours
or gases at a high temperature for the purposes of calcining, salting,
chlorinating, or otherwise treating ores, compounds, or products in such
before-mentioned furnaces or modifications thereof.
And in order that my said Invention may be more clearly understood
I shall now refer to and describe the annexed explanatory Drawing,
which represents what is known as a Gerstenhofer furnace, having a
Siemens' regenerative furnace combined therewith.
According to my Invention although I have represented a Gerstenhofer
furnace any ordinary or other calcining furnace may be combined with
what is known as a Siemens' regenerative furnace.
A represents one of a pair of Siemens' regenerators; B is the
passage or flue leading from the gas producer; C and D are dampers,
the one C being intended for shutting off the gas producer from the
regenerators when requisite, whilst the damper D is one of a pair of
such dampers for changing or diverting the course of the gas from one
generator to the other, as is well understood and practised; E is the hot
air flue, which communicates with the calcining chamber F by the
passages and openings G, G. The gases pass off by the opening H
either to a chimney direct or into a flue or passage, whereby the waste
heat and products may be utilised as may be found expedient. The
gases and products of combustion after passing through the regenerator
for the purpose of heating the same pass off by the flue I to a chimney
and after the regenerator has been brought to the required temperature
the gas is shut off therefrom and the air to be heated is directed therein
entering at the bottom and taking up heat in its progress through the

page_text: regenerator H till by the time it has arrived at the hot-air flue E it has
attained the requisite elevated temperature for producing the desired
effect upon the ores in the calciner. In lieu of obtaining the necessary
heating medium by the combustion of the gases resulting from the gas
producer, the waste heat escaping from my smelting or other furnace
may be employed, such heat being directed into the regenerator A by
the flue or opening shewn in dotted lines at K.
Having now described and particularly ascertained the nature of my
said Invention, and the manner in which the same is or may be
used or carried into effect, I would observe in conclusion, that what I
consider to be novel and original, and therefore claim as the Invention
secured to me by the herein-before in part recited Letters Patent is, the
combination with calcining furnaces, or with what are known as
Gerstenhofer furnaces or modifications thereof, of what are known
as Siemens' regenerative gas furnaces or modifications thereof, sub-
stantially as and for the purpose herein-before described.
In witness whereof, I, the said Astley Paston Price, have to this
my Specification set my hand and seal, the Sixteenth day
of September One thousand eight hundred and sixty-eight.
ASTLEY P. PRICE. (L.s.)