IMPROVEMENTS IN APPARATUS FOR REMOVING SLAG FROM FURNACES
Year: 1862

page_text: LETTERS PATENT to John Hunter, Manager of the Dalmellington Iron
Works, in the County of Ayr, North Britain, for the Invention of
"IMPROVEMENTS IN APPARATUS FOR REMOVING SLAG FROM FURNACES."
Sealed the 12th September 1862, and dated the 13th March 1862.
PROVISIONAL SPECIFICATION left by the said John Hunter at the
Office of the Commissioners of Patents, with his Petition, on the
13th March 1862.
I, JOHN HUNTER, Manager of the Dalmellington Iron Works, in the
County of Ayr, North Britain, do hereby declare the nature of the said Inven-
tion of "IMPROVEMENTS IN APPARATUS FOR REMOVING SLAG FROM FURNACES," to be
as follows, that is to say :-
This Invention is designed to obviate the loss of time hitherto experienced in
removing slag from furnaces, and the destructive tear and wear of the boggies
or waggons.employed therein.
In carrying out the Invention according to one modification, the top or
platform of the boggie is made hollow or cellular to receive water, by the
circulation of which it is kept cool, and prevented from becoming distorted
and damaged from the heat of the fresh slag. To receive the slag the
boggie is placed under a kind of enclosure, the three sides of which consist of
cellular or hollow casings, fixed upon pillars or other supports, whilst the fourth.
side is closed by doors, also made cellular or hollow. The slag is run into this

page_text: box or enclosure, and upon the boggie, and when it is sufficiently cooled to
retain its shape, this being attained more rapidly than hitherto, the doors are
opened, and the boggie is drawn away with the block of slag upon it. To
facilitate this removal, the enclosure is slightly narrowed from the doors
towards the back. Various arrangements may be made for directing the
circulation of the water; according to one plan there is fixed or adjusted upon
the platform of the boggie at one of its back corners, a kind of well communi-
cating with the interior of the platform. The water enters by a pipe passing
down this' well, the mouth of the pipe being in or near the middle of the
platform, where there is the greatest concentration of heat. The water
spreads from this pipe over the platform, and overflows from the corner well
by a spout at the top, which discharges it into one of the compartments of the
hollow casing forming the enclosure. The casing is contrived so that
the water overflows from one compartment into another, finally passing
through the hollow doors, and it overflows from the doors into a pipe
carried by one of them, this pipe discharging into a funnel near the hinges
of the door. This funnel and the discharge duct with which it commu-
nicates may be conveniently formed upon, and in one of the pillars supporting
the casing. Two or more water casing inclosures may be fitted up in
juxtaposition with provision for receiving and filling two or more boggies.
SPECIFICATION in pursuance of the conditions of the Letters "Patent, filed
by the said John Hunter in the Great Seal Patent Office on the
13th September 1862.
j.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
HUNTER, Manager of the Dalmellington Iron Works, in the County of Ayr, 2
North Britain, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria,. by Her. Letters
Patent, bearing date the Thirteenth day of March, in the year of our
Lord One thousand eight hundred and sixty-two, in the twenty-fifth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me, a
the said John Hunter, Her special licence that I, the said John. Hunter,
my executors, administrators, and assigns, or such others as I, the said
John Hunter, my executors, administrators; and assigns, should at. any
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, a
use, exercise, and vend, within the United Kingdom of Great Britain and.

page_text: Ireland, the Channel Islands, and Isle of Man, an Invention for "IMPROVE-
MENTS IN APPARATUS FOR REMOVING SLAG FROM FURNACES," upon the condition,
amongst others, that I, the said John Hunter, my executors or adminis-
trators, 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 John Hunter, do hereby declare
the nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement in writing, reference being had to the accompanying Drawings, and
to the letters and figures marked thereon, that is to say :-
My said Invention is designed to obviate the loss of time hitherto expe-
rienced in removing slag from furnaces, and the destructive wear and tear of
the boggies or waggons employed therein.
4
In carrying out the Invention according to one modification, the top or .
platform of the boggie is made hollow or cellular to receive water, by the
circulation of which it is kept cool, and prevented from becoming distorted
and damaged from the heat of the fresh slag. To receive the slag 'the boggie
is placed under a kind of enclosure, the three sides of which consist of cellular
or hollow casings, fixed upon pillars or other supports, whilst the fourth side is.
closed by doors also made cellular or hollow. The slag is run into this box or
enclosure, and upon the boggie, and when it is sufficiently cooled to retain its
shape, this being attained more rapidly than hitherto, the doors are opened.
and the boggie is drawn away with the block of slag upon it. To facili-
tate this removal, the enclosure is slightly narrowed from the doors towards
the back. Various arrangements may be made for directing the circulation
of the water. Two or more water casing enclosures may be fitted up in
juxtaposition, with provision for receiving and filling two or more boggies at
one time.
And in order that my said Invention and the manner of performing the
same may be properly understood, I have hereunto appended a Sheet of explan-
atory Drawings, representing a conveniently practicable modification of my
improved arrangements.
Figure 1 is a front elevation, partly in section; Figure 2 is a vertical section
at right angles, to Figure 1; and Figure 3 is a plan partly in section.. The
arrangements represented are for two boggies.
Each. boggie consists of a

page_text: hollow platform A, mounted upon two pairs of wheels B, by means of trams C,
and axle boxes D. The hollow platform A, consists of top and bottom of iron
plate; 'rivetted upon a rectangular iron frame, and connected and strengthened
throughout with stud rivets. Two stop-cocks E, F, are fitted to the hollow
platform A, one, E, for the water entering, and the other F; for the water
leaving. The water is supplied from a pipe G, by a branch H, the front
end of which is formed with a conical mouth, directed upwards, to fit the
conical nose of the stop-cock E, and the parts are made to fit closely by
means of a wedge, introduced between the end of the branch H, and the
bottom of a box I, which encloses the stop-cock E. The discharge-cock
F, is made to communicate in a similar way with a branch J, by which
the water, after it has circulated in the hollow platform A, passes to the
stationary boxes or hollow walls, which serve to retain and shape the slag,
whilst being received upon the boggies. To prevent injury to the platform A,
from the production of steam, whilst the stop-cocks E, F, are closed, a safety
valve K, is fitted to the under side of the platform. The stationary casing or
enclosure consists of narrow boxes or hollow casings L, M, of cast iron,
mounted on standards N, and forming three sides to each boggie, whilst
hollow doors P, hinged to the side casings M, occupy the front of the boggie.
The water enters the back casings L, by the pipes J, which receive it from
the platforms A, and it passes thence through several hollow bolts or studs
into the side casings M. From the side casings M, the water passes into the
upper parts of the doors P, by short bent pipes Q, which enter the doors in the
axes of their hinges, so as not to be affected by the opening and closing of the
doors. The water is finally discharged from the doors by spouts R, also
situated in the axes of the hinges, so as to be always over funnels S, formed
upon stationary pipes T, by which the water is finally conveyed away. In using
the apparatus, the boggie being run in, under, and within the casings L, M,
the doors P are closed, the water pipes H, J, are connected; and the water
being let on, the slag is run in by the movable spout U, at the back in the
usual way. The slag being sufficiently cooled and set, the cocks. E, F, are closed,
the pipes H, J, disconnected, the doors P opened, and the boggie drawn away
to deposit its load.
According to another modification, the provision for introducing and circula-
ting the water, consists of a kind of well fixed or adjusted at one of the back
corners of the hollow platform of the boggie, and the water enters by a pipe
passing down this well and terminating near the middle, and after spreading
over the platform, the water rises up the well, and overflows by a spout into
the stationary casings.

page_text: Having thus particularly described my said Invention, and the manner in
which the same is or may be performed, I have to state that I do not restrict
myself to the precise details herein described or delineated, but that what I
believe to be novel and original, and claim as the Invention secured to me by
the herein-before in part recited Letters Patent is, the constructing of slag
boggies or waggons and enclosures for the same, with provision for the circu-
lation therethrough of water, to prevent injury by heat, substantially as herein-
before described.
In witness whereof, I, the said John Hunter, have hereunto set my
hand and seal, this Eleventh day of September, in the year of our Lord
One thousand eight hundred and sixty-two.
Witness,
EDMUND HUNT,
Patent Agent,
: 28, St. Enoch Square,
Glasgow.
JOHN HUNTER. (L.B.)