IMPROVED APPARATUS FOR THE REMOVAL OF DROSS OUT OF BLAST FURNACES
Year: 1869

page_text: LETTERS PATENT to Gustave Baron d'Adelswärd, of No. 37, Boulevard
Bonne Nouvelle, in the City of Paris, Engineer, for the Invention
of "IMPROVED APPARATUS FOR THE REMOVAL OF DROSS OUT OF BLAST
FURNACES."
Sealed the 13th May 1870, and dated the 18th November 1869.
PROVISIONAL SPECIFICATION left by the said Gustave Baron d'Adel-
swürd at the Office of the Commissioners of Patents, with his
Petition, on the 18th November 1869.
I, GUSTAVE BARON D'ADELSWÄRD, of No. 37, Boulevard Bonne
Nouvelle, in the City of Paris, Engineer, do hereby declare the nature
of the said Invention for "IMPROVED APPARATUS FOR THE REMOVAL OF DROES
OUT OF BLAST FURNACES," to be as follows:-
My improved apparatus is illustrated on the accompanying Sheets of
Drawing, and is essentially composed of,―
1°. A cast-iron cistern A, B, C, D, divided into two compartments by
a partition E, F, (see Figs. 1 and 2, Sheets I. and II.) This cistern is
constantly kept full of water.

page_text: 2. Two hydraulic presses M, N, Fig. 1 (or other lifting apparatus),
each having a plato G, H, G, H; these plates are intended to carry small
waggons I (Figs. 1 and 3), which remain immersed to receive the dross.
The presses M, N, work alternately, so that there is always one waggon
receiving dross. They may be worked by a natural water pressure when
obtainable, or by an arrangement of accumulators. The presses are only
mentioned here as a means of lifting the waggons, and they might be
replaced by cranes or by any suitable lifting apparatus.
Fig. 1 (Sheet 1.) of the Drawings is a longitudinal vertical section of
the entire apparatus; Fig. 2 (Sheet II.), plan of same; and Fig. 3,
transverse vertical section of cistern.
I will now proceed to describe the working of the apparatus.
The press M being in the position shewn, Fig. 1, with the waggon I
on the plate G, H, the water entirely covering the waggon, the dross is
admitted by the conduit R; and when the waggon is full of dross (which
will be in a granular state) the press M will be set at work, and the
waggon carried away. The press N will have been lowered with its
waggon during the filling of the waggon I, and thus the operation may
be continued uninterruptedly, permitting a constant extraction of dross
from the blast furnace instead of running it out at intervals as hitherto.
The blast pipes are discharged into the cistern A, B, C, D, and the level
is constantly maintained by an overfall,
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Gustave Baron d'Adelswürd in the Great Seal
Patent Office on the 14th May 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GUSTAVE
BARON D'ADELSWÄRD, of No. 37, Boulevard Bonne Nouvelle, in the
City of Paris, Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighteenth day of November, in the
year of our Lord One thousand eight hundred and sixty-nine, in the
thirty-third year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Gustave Barou d'Adelswärd, Her
special licence that I, the said Gustave Baron d'Adelswärd, my exc-

page_text: cutors, administrators, and assigns, or such others as I, the said Gustave
Baron d'Adelswärd, 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 "IMPROVED APPARATUS FOR THE REMOVAL OF DROSS OUT OF BLAST FURNACES,"
upon the condition (amongst others) that I, the said Gustave Baron
d'Adelswärd, 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 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 Gustave Baron d'Adelswärd, 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 accom-
panying Sheet of Drawing, and to the figures and letters of reference
placed thereon:-
The question of the removal of dross out of blast furnaces is constantly
growing in importance, and the object of my Invention is to provide an
apparatus by means of which this operation may be effected with great
economy of labour and material.
On the accompanying Sheet of Drawing Figure 1 is a longitudinal
section, Figure 2 a plan, and Figure 3 a cross section of my improved
apparatus which is composed essentially of,-
Firstly. A cast-iron cistern A, B, C, D, divided into two compartments
by the partition E, F. This cistern is constantly kept full of water.
Secondly. Two hydraulic presses M, N, or other lifting apparatus, cach
having a plate or platform G, H, G, H; these plates are intended to
carry small waggons I, which remain immersed to receive the dross.
The presses M & N work alternately so that there is always one waggon
receiving dross, they may be worked by a natural water pressure when
obtainable or by an arrangement of accumulators. The presses are only
mentioned here as a means of lifting the waggons, and they might bo
replaced by cranes or by any suitable lifting apparatus.

page_text: I will now proceed to describe the working of the apparatus.
The press M being in the position shown, Figure 1, with the waggon I
on the plate or platform G, H, the water entirely covering the waggon,
the dross is admitted by the conduit R, and when the waggon is full of
dross (which will be in a granular state) the press M will be set at work
and the waggon carried away. The press N will have been lowered with
its waggon during the filling of the waggon I, and thus the operation
may be continued uninterruptedly, permitting a constant extraction of
dross from the blast furnace instead of running it out at intervals as
hitherto. The blast pipes are discharged into the cistern A, B, C, D,
and the level is constantly maintained by an overfall.
a indicates a shoot by which the dross arrives from the furnace; ba
revolving trough; c, level of the railway and of the works; d, water
level; e, overfall; f, channel; 9, railway; h, valve box.
Having now described and ascertained the nature of my said Inven-
tion, and in what manner the same is to be performed, I would have it
understood that I do not limit myself to raising the waggon by hydraulic
power, but use steam power or any mechanical means which I may find
available for this purpose, and that I claim, the use of a submerged
waggon or its equivalent to receive dross out of blast furnaces, sub-
stantially as herein-before described and illustrated on the annexed
Sheet of Drawing.
In witness whereof, I, the said Gustave Baron d'Adelswärd, have
hereunto set my hand and seal, this Sixth day of May, in the
year of our Lord One thousand cight hundred and seventy.