IMPROVEMENTS IN APPARATUS EMPLOYED IN THE MANUFACTURE OF IRON AND own
Year: 1862

page_text: LETTERS PATENT to Edward Drown Wilson, of Parliament Street, West-
minister, in the County of Middlesex, Engineer, for the Invention of
"IMPROVEMENTS IN APPARATUS EMPLOYED IN THE MANUFACTURE OF IRON AND
own WY 11son, or rarnament Street, West-
minister, in the County of Middlesex, Engineer, for the Invention of
"IMPROVEMENTS IN APPARATUS EMPLOYED IN THE MANUFACTURE OF IRON AND
STEEL."
313
"IMPROVEMENTS IN APPARATUS EMPLOYED IN THE MANUFACTURE OF IRON AND
STEEL."
Sealed the 6th April 1863, and dated the 13th October 1862.
PROVISIONAL SPECIFICATION left by the said Edward Brown Wilson
at the Office of the Commissioners of Patents, with his Petition, on the
13th October 1862.
I, EDWARD BROWN WILSON, of Parliament Street, Westminster, in the
County of Middlesex, Engineer, do hereby declare the nature of my said
Invention for IMPROVEMENTS IN APPARATUS EMPLOYED IN THE MANUFACTURE OF
IRON AND STEEL," to be as follows:
This Invention consists in the employment of a valve, stop-cock, or other
suitable contrivance applied to the blast pipes of the atmospheric vessels or of
furnaces used in the manufacture of iron and steel for the purpose of throttling.
the blast entering therein.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Edward Brown Wilson in the Great Seal Patent Office
on the 13th April 1863..
5 TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDWARD
BROWN WILSON, of Parliament Street, Westminster, in the County of
Middlesex, Engineer, send greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirteenth day of October, in the year of our Lord
One thousand eight hundred and sixty-two, in the twenty-sixth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Edward Brown Wilson, Her special license, that I, the said Edward
Brown Wilson, my executors, administrators, and assigns, or such others as
I, the said Edward Brown Wilson, 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 Ireland, the Channel Islands, and Isle of Man, an Invention for "IM-
PROVEMENTS IN APPARATUS EMPLOYED IN THE MANUFACTURE OF IRON AND STEEL,"
upon the condition (amongst others) that I, the said Edward Brown Wilson,
my executors or administrators, by an instrument in writing under my
hand and seal, or under the hand and seal of one of them, 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 Edward Brown Wilson, 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, reference being had to the accompanying Drawings, and to the
letters and figures marked thereon, that is to say:-.
This Invention consists in the employment of a valve, stop-cock, or other
suitable contrivance applied to the blast pipe or pipes of the atmospheric.
vessels or of blast furnaces employed in, the manufacture of iron and steel for
the purposes of throttling or wire-drawing the blast before entering such.
vessels or furnaces, and producing in reality a blow-pipe action by reason of
the tenuity of the entering jet or jets of air, steam, or gas injected.
And in order that my said Invention may be fully understood, I shall now
proceed more particularly to describe the same, and for that purpose I shall
refer to the several Figures on the Sheet of Drawings hereunto annexed,
the same letters of reference indicating, corresponding parts in all. the
Figures:
3
Figure 1 of my Drawings represents, in vertical section, shewing the
application of my Invention to my improved form of atmospheric vessel, and
Figure. 2 is a plan. of the same, with one-half in horizontal section; Figures
3, 4, and 5 shew in section its application to another form of atmospheric

page_text: vessel, provided with one, two, or more blow-pipes. A is the main body of
the atmospheric vessel, which in Figures 1 and 2 is formed with a continua-
tion B opening into the bottom of the vessel, and rising upwards to a level'
above that of the molten metal in the body of the vessel. At the upper end'
of this continuation, which is lined with gannister like the vessel itself, is fitted.
the nozzle of the blast pipe C, which pipe is carried round the vessel'so as to
communicate with one of the trunnions D, D, upon which the vessel is
suspended. At the nozzle. or other portion of the blast pipe contiguous thereto
I place a diaphragm or disc E (Figure 5), which has one, two, or more minute
apertures of say one-twentieth of an inch in diameter made therein, for the blast
to pass through before entering the space above the metal in the part B, or a
trumpet or blow-pipe-shaped entering piece G (Figures 1, 4, and 5) may be
employed. By thus wire-drawing or throttling the blast, I obtain a very
superior action upon the molten metal, the air rising up through it in a gentle
manner, without creating the violent agitation and displacement which arises
when the blast is left to enter freely and uncontrolled from the blast pipe.
In practice it has been found that nearly the whole of the metal has been
injected. F is a stop-cock or other valvular aperture fitted into the blast pipe
for the purpose of controlling and regulating the amount of air passing through
the perforation or perforations in the diaphragm or disc E, or trumpet or blow-
pipe-shaped entering piece G. This cock or valve may, if desired, be used
without the perforated diaphragm or dise, or trumpet or blow-pipe-shaped
entering piece, and will serve to throttle or wire-draw the blast; but I prefer
to combine it with the perforated disc, or trumpet or blow-piped-shaped
entering piece. In some cases an air vessel or receiver may be employed,
through which the blast passes on its way to the atmospheric vessel or furnace
for the purpose of equalizing its pressure.
In Figures 1 and 2 a circular vessel A is shewn, baving an exit pipe A¹ for
the gases at one side, this pipe or passage being sealed at its lower mouth by
the molten metal contained in the main body of the vessel. The blast is
directed down upon the surface of the metal from one or more blast pipes C, C,
in the closed top of the vessel, and is throttled or wire-drawn so as to
produce the blow-pipe action, as herein-before described, the gases escaping
through the exit passage A¹.
In Figure 6 the same system of throttling or wire-drawing the blast is
represented by the perforated disc E or trumpet or blow-pipe-shaped entering
piece and stop-cock or other valve F.
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

page_text: 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 throttling or wire-drawing of the
blast employed in the manufacture of iron and steel, whether by the
atmospheric process or by the blast furnace, by introducing a stop-cock or
valve, or finely perforated disc or stopper, or trumpet, or blow-pipe-shaped
entering piece into the blast pipe, as herein-before described.
In witness whereof, I, the said Edward Brown Wilson, have hereunto
set my hand and seal, this Sixth day of April, One thousand eight
hundred and sixty-three.
EDWARD BROWN WILSON. (L.S.)