Improvements in the Manufacture of Steel or Ingot Iron.
Year: 1889

page_text: Date of Application, 21st Dec, LOGO
Sassification Left 13th Sept., 1890-Accepted, 18th Oct., 1890
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Steel or Ingot Iron.
1, JOHN HENRY DARRY of Brymbo in the County of. Denbigh, North Wales
Metallurgist, do hereby declare the nature of this invention to be as follows:-
"
In Specification No. 418 of 1888 I have described a process of carburizing iron or
steel by "filtering or causing the molten metal to pass from the ladle through a
mass of carbonaceous material contained in a vessel where it takes up the required
amount of carbon, and from thence passes into a supplementary casting ladle.
While I have found this to work well in practice in many cases where the works
do not possess the means for casting the steel from one ladle to another it is difficult
to apply, while in some cases there is not room enough hetween the mouth of the
converter when in its lowest position and the ladle to allow of the interposition of the
carbon vessel and supplementary ladle.
I therefore propose as an alternative method to introduce the carbon into the steel
in the following manner :-
The carburizing material thoroughly ground is placed in a hopper which is carried
on the ladle crane, said hopper communicating with a worm or spiral, or with the
cavities of a wheel, the movement of which will cause a regulated quantity of the
carbon to be discharged down a spout into a small vessel placed between the Indle and
the ingot mould where it will meet the current of metal from the ladle, and thoroughly
mix with it. passing thence through an opening in the bottom to the ingot' mould.
The steel produced by this method will stand quiet in the moulds so that the addition
of ferro silicon is unnecessary, while the amount of carbon in same may be arrived at
with great certainty, although a certain quantity of spiegel or ferro-manganese may
be first added to the metal if desired.
PHILIP M.
STICE,
55 & 56, Chancery Lane, London, Applicant's Agent.
17ated
PHILIP M. JUSTICE,
55 & 56. Chancery Lane, London, Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Steel or Ingot Iron.
1, JOHN HENRY DARBY of Brymbo in the County of Denbigh, North Wales,
Metallurgist, 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 :-
In Specification No. 418 of 1888 1 have described a process of carburizing iron or
steel by "filtering" or causing the molten metal to pass from the ladle through a
mass of carbonaceous material contained in a vessel where it takes up the required
amount of carbon, and from thence passes into a supplementary casting ladle.
While I have found this to work well in practice; in many cases where the works
do not possess the means for casting the steel from one ladle to another it is difficult
to apply, while in some cases there is not room enough between the mouth of the
converter when in its lowest position and the ladle to allow of the interposition of the
carbon vessel and supplementary ladle.
I therefore propose as an alternative method to introduce the carbon into the steel
in the manner and by means of the apparatus hereinafter described and illustrated in
the accompanying drawing in which
Fig. 1 is a side elevation of a part of a ladle crane with my improvements applied

page_text: The carburizing material which may be coke or other suitable form of carbon is
thoroughly ground and placed in the hopper A which is carried by the arm of the
crane. This hopper communicates with spiral or worm working in a tube which
may be operated by bevel gearing a a from a handle b. The movement of this spiral
will cause a regulated quantity of the carbon to be discharged into and down an
inclined chute or trough C'into a small vessel D lined with refractory material which
is placed between the ladle E and the ingot mould F. The carbon discharged into
the vessel D meets therein the stream of metal from the ladle E and after becoming
thoroughly incorporated with it the stream passes through an opening in the bottom
into the ingot mould F. The steel produced by this method will stand quiet in the
moulds so that the addition of ferro silicon is unnecessary, while the amount of carbon
in same may be arrived at with great certainty. If desired a certain quantity of
spiegel or ferro manganese may be first added to the metal. In place of the spiral
or worm a wheel having.compartments may be employed, or in fact any other device
by which a regulated quantity of the material may be delivered.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, f declare that what. I'
.claim is :-
1. The improvements in the manufacture of steel or ingot iron hereinbefore
described which consists in causing a regulated stream of carbonaceous material to 2
mix with the stream of molten metal from the ladle before its entrance into the ingot
mould substantially as described.
.
2. The improved arrangement of apparatus for the above named purpose substantially
as described and illustrated in the drawings.
Dated this 12th day of Santamba, 180n
PHILIP M. JUSTICE,
55 & 56, Chancery Lane, London, Agent for the Applicant.