IMPROVEMENTS IN OR APPLICABLE TO FURNACES AND CONVERTERS EMPLOYED IN THE MANUFACTURE AND REFINING OF IRON AND THE CONVERSION OF IRON INTO STEEL
Year: 1885

page_text: We WILLIAM HENRY TOOTH of 126 Brook Street, Newington Butts, Engineer,
and JAMES EDWARD ROOKER of 10 Sutherland Square, Walworth, Chemist, both
in the county of Surrey do hereby declare the nature of the said invention for
"IMPROVEMENTS IN OR APPLICABLE TO FURNACES AND CONVERTERS EMPLOYED IN
THE MANUFACTURE AND REFINING OF IRON AND THE CONVERSION OF IRON INTO
STEEL to be as follows:-
These improvements relate to apparatus for introducing into the tuyere holes of
blast cupola and other furnaces and converters employed in the manufacture and
refining of iron and the conversion of iron into steel, either dry coal dust or coal
dust mixed with other suitable materials.
For this purpose we apply to blast furnaces, cupolas and converters an apparatus
consisting of a cylinder and grinding and feeding mill constructed to reduce the
materials to be fed to the tuyere holes into powder.
In the cylinder which is fixed above the grinding mill and feeder we place an
upright shaft with a series of arms with knives fixed thereto intended to be used
for stirring the materials and keeping them loose, so that they can fall into the
grinding and feeding mill; underneath the mill we construct a box with suitable
pipes to convey the materials into the tuyere holes so that they can be forced into
the furnace by the blast and some of them be converted into gas.
The grinding and feeding mill can be so constructed that the speed can be
regulated so as to regulate the supply of materials to the tuyere holes for the
purpose of preventing any explosive compound forming in the furnace. By this
arrangement the sulphur and phosphorus in the mineral treated will be separated
and be carried off at the head of the furnace in a better manner than. hitherto.
"
Dated the 23rd day of March 1885.

page_text: Employed in the Manufacture and Refining of Iron and the
Conversion of Iron into Steel.
We WILLIAM HENRY TOOTH, of 126 Brook Street, Newington Butts, Engineer
and JAMES EDWARD ROOKER of 10 Sutherland Square, Walworth, Chemist, both
in the county of Surrey 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 :-
These improvements relate to apparatus for introducing into the tuyere holes of
blast cupola and other furnaces and converters employed in the manufacture and
refining of iron and the conversion of iron into steel, either dry coal dust or coal
dust mixed with other suitable materials.
For this purpose we apply to blast furnaces, cupolas and converters an apparatus
consisting of a cylinder or cylinders and grinding and feeding mill or mills con-
structed to reduce the materials to be fed to the tuyere holes into powder.
In each of the cylinders which are fixed above the grinding mills and feeders
we place an upright shaft with a series of arms with knives fixed thereto intended
to be used for stirring the materials and keeping them loose, so that they can fall
into the grinding and feeding mills; underneath the mills we construct a box with
suitable pipes and nozzles to convey the materials into the tuyere holes so that
they can be forced into the furnace by the blast and some of them be converted
into gas.
In order to enable our invention to be fully understood we will proceed to
describe the same by reference to the accompanying drawing in which figure 1
represents a vertical section of a cupola refining furnace with our improved
Similar
apparatus applied thereto; figure 2, is a horizontal section of the same.
letters in both the figures represent similar parts a, a, represent the grinding
mills and feeders for reducing the materials to be fed to the tuyere holes b, b,
of the furnace A into powder. and which are rotated by suitable means not
shewn in the drawing; c, c, are the cylinders placed above the grinding mills
and feeders a; and d (figure 1) shews one of the upright shafts placed in the
cylinders c, c; e, e, e, e, are the arms with which the shafts d, are provided
and ffff, are the knives fixed to the arms e, e, e, e, the said arms and knives
serving to stir the materials (such as coal dust or coal dust mixed with other
materials) and keep them loose so that they can fall into the grinding and feeding
mills a; g and g³, are gearing driven by any suitable means (not shewn in the
drawing) for the purpose of rotating the shaft d, with its arms c, and knives f; the
cylinders c, are fixed to the sides of the furnace A or they can be supported in any
other suitable manuer; h, h, are the boxes, h, h¹, the pipes and j, j, the nozzles for
conveying the materials into the tuyere holes b, as they come from the grinding
mills and feeders a; k, k¹, k, k', are the pipes conveying the blast for forcing the
materials into the interior of the furnace A so that some of them may be converted
into gas; l, represents the cover of one of the cylinders c, to allow of the materials
being introduced into the latter.

page_text: The grinding and feeding mills a, are so constructed that their speed can be
regulated so as to regulate the supply of materials to the tuyere holes b, for the
purpose of preventing any explosive compound forming in the furnace A. By this
arrangement the sulphur and phosphorus in the mineral treated will be separated
and be carried off at the head of the furnace in a better manner than hitherto.
Having now particularly described and ascertained the nature of our inven-
tion and in what manner the same is to be performed we declare that what
we claim is
1. The application to blast cupola and other furnaces and to converters, of an
apparatus for grinding coal dust or other suitable material and for feeding the same
into the furnace or converter, the said apparatus being provided with suitable
means for regulating the speed of the grin ling and feeding substantially as and for
the purpose herein before described.
2. The improved apparatus for grinding coal dust or other suitable material and
feeding the same into blast cupola and other furnaces and converters substantially
as herein before described and represented in the accompanying drawing.
A
G. F. REDFERN,
Agent for the Applicants.