Improvements in or relating to Blast or Smelting Furnaces having Water-jackets.
Year: 1890

page_text: Date of Application, 17th Feb., 1890
Complete Specification Left, 17th Nov., 1890-Accepted, 14th Feb., 1891
PROVISIONAL SPECIFICATION.
Improvements in or relating to Blast or Smelting Furnaces having
Water-jackets.
I, JAMES WARNE CHENHALL, of Dart Villa, Totnes, County of Devon, Civil,
Mining, and Metallurgical Engineer, do hereby declare the nature of this invention
to be as follows:-
This invention relates to novel details and method of constructing blast furnaces
for enabling a portion of such a furnace to be moved or slid away from the upper
part and from the metal container or hearth to permit of inspection, repairs or for
other purposes.
In connection with the movable portion and with the upper portion I provide for
a flow of water between the walls of the furnace and a jacket, the transverse section
of the furnace and the jacket being rectangular.
The tuyeres are connected with the movable portion which is suspended by
rollers upon girders at either side and bars are arranged as guides.
Dated this 17th day of February 1890
H. GARDNER,
166, Fleet Street, London, Agent for the said J. W. Chenhall.
COMPLETE SPECIFICATION.
Improvements in or relating to Blast or Smelting Furnaces having
Water-jackets.
I, JAMES WARNE CHENHALL, of Dart Villa, Totnes, County of Devon, Civil,
Mining, and Metallurgical Engineer, do hereby declare the nature of this invention
and in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement:-
This invention relates to novel details and method of constructing blast furnaces
for enabling a portion of such a furnace to be moved or slid away from the upper
part and from the metal container or hearth to permit of inspection, repairs, or for
other purposes.
In connection with the moveable portion and with the upper portion, I provide for
a flow of water between the walls of the furnace and a jacket, the transverse section
of the furnace and the jacket being rectangular.
The tuyeres are connected with the moveable portion which is suspended by
rollers upon girders at either side, and bars are arranged as guides.
My invention will be understood by reference to the annexed drawings, in
which
Figure 1 is a sectional elevation through slag spouts and water jackets, showing
the method of removing the lower end jackets.
Figure 2 is a sectional elevation through the metal spout, tapping hole, and
tuyeres, showing the method of sliding the lower water jackets out of their place, it
also shows the means employed for circulating the water in the jackets.
Figure 3 is a sectional plan through the tuyeres showing the construction of the
lower jacket.
Figure 4 is a sectional plan of the upper jackets, showing the girders and wheels
employed for carrying the lower jackets.
The opening in the jacket for the blast tuyeres are shown in Figures 5 and 6.
The inner plate is flanged outwards a distance of several inches.
The outer plate is also flanged outwards sufficient to form a rivetted joint. A
[Price 8d.1

page_text: short tube made of boiler plate shown at Figure 6 is fitted into the outer casing and
is either screwed or welded on to the projection of the inner plate. By this means
what would otherwise be a troublesome joint is removed entirely from the fire and
stopped from leakage.
The improvement consists of constructing that part of the furnace A, B, C, D,
Figure 3 in such a manner that it can be readily removed and replaced, either for
inspection, repairs, or working of the ore. The sides A and B are water jacketted
and hung on a shaft provided with wheels which run on girders E and F.
The sides C and D are also water jacketted, each side being made in one or more
parts, and also being supported on sliding guide bars G. The upper portion of the
furnace H, H2, H3, H, is water jacketted and supported on the girders E, F. The
lower part of the furnace J is supported on wheels. K is the feed hopper, into
which the charge is introduced. L, the blast pipe, having a number of pipes
leading to the tuyeres M. The furnace illustrated is arranged for lead, but
it can be arranged for any class of ore by introducing a suitable shaped bottom J.
The circulation of water in the jacket is done by means of pipes, as illustrated.
O is the feed pipe, delivering the water into the upper jackets H', H³, H³, H*,
having an overflow pipe at the top P, from which water flows into the tank Q.
From this tank, the water runs into the lower jackets A, B, C, D. The overflow
from these jackets is at the top R, the water then flows away by the spout S.
Figure 5 shows the novel way of making the tnyere openings as before referred
to. a is the flange of the inner plate, to which a short tube is welded and
provided with an enlarged end for being rivetted to the flange d of the outer
casing.
Figure 6 shows the short tube
arranged for being rivetted to the flange of the outer casing.
screwed to the flange a of the inner casing and
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The method hereinbefore described of supporting the lower jackets of the
furnace for easy removal as and for the purpose specified.
2. Making the tuyere openings in the manner described so as to avoid any joints
being exposed to the action of the fire, substantially as shown in the drawings
Figures 5 and 6.
Date:
1000
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said J. W. Chenhall.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said J. W. Chenhall.