Method of Pouring Steel Ingots.
Year: 1896

page_text: Date of Application, 7th Dec., 1896
Complete Specification Left, 22nd Dec., 1896-Accepted, 20th Feb., 1897
PROVISIONAL
ECIFICATION.
Method of Pouring Steel Ingots.
I, HAROLD IMRAY, of No. 28 Southampton Buildings, Chancery Lane, in
the County of London, Chartered Patent Agent, do hereby declare the nature
of this invention (as communicated to me from abroad by La Compagnie
Anonyme des Forges de Chatillon et Commentry of 19 Rue de la Rochefoucauld,
Paris, France) to be as follows:-
Part of the cavities produced in forging large steel ingots result from the fact
that during the pouring of the metal there is produced at the surface a solid crust
which is at times covered with liquid metal without becoming fused again, and this
chiefly at the sides and angles.
This phenomenon is still more marked when the steel contains certain metals,
chromium, nickel &c.
In order to obviate this difficulty my foreign correspondents have devised a
method of pouring the metal so as to cause the jet to reach all parts of the surface
of the metal.
For this purpose under the ladle which carries the charge of molten metal, a
small ladle is mounted on trunnions on which it is oscillated by a hand lever. Thus
while the main ladle and with it the smaller ladle travel along over the ingot mould,
the smaller ladle is oscillated so that the jet of metal is directed all over the surface
of that in the mould.
Instead of employing a small ladle as above described, the main ladle may itself
be oscillated while it travels.
Dated this 7th day of December 1896.
ABEL & IMRAY,
Agents for the Applicant.
I, HAROLD IMRAY, of No. 28 Southampton Buildings, Chancery Lane, in
the County of London, Chartered Patent Agent, 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 :-
Part of the cavities produced in forging large steel ingots result from the fact
that during the pouring of the metal there is produced at the surface a solid crust
which is at times covered by liquid metal, without becoming fused again, and this
chiefly at the sides and angles.
This phenomenon is marked to a still greater extent when the steel contains
certain metals, chromium, nickel &c.
In order to obviate this defect my foreign correspondents have devised a method
of pouring in such a way as to cause the jet to reach all parts of the surface of the
ingot.

page_text: For this purpose the arrangement shewn in the accompanying drawing is
adopted. An intermediate ladle C of small size provided with an outflow hole B
is suspended under the ladle P which receives the charge of metal from the furnace,
and which has an outflow hole A directing the metal into the intermediate
ladle C.
The small ladle C mounted on trunnions O can by means of a hand lever be
oscillated and this by inclining the jet from B causes it to reach all parts of the
surface of the metal in a direction transverse to the ingot mould. As the main
ladle P is at the same time moved in a longitudinal direction, all parts of the metal
surface in the ingot mould can be successively reached during the pouring.
The dotted line C indicate the extreme position of the intermediate ladle when
oscillated to the one side; it may be oscillated to a corresponding extent on the
other side. By moving the ladle C aside to a position such as C, the outlet A is
left clear so that the metal can be poured directly from the main ladle P into the
ingot mould L.
Instead of arranging a movable intermediate ladle between the main ladle 'and
the ingot mould, the same result may be attained by giving the main ladle an
oscillating movement on its carriage in the transverse direction, while the carriage
is moved longitudinally..
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is
In pouring steal ingots, directing the jet of liquid metal over all parts of the
surface of the metal in the mould, substantially as and for the purpose set forth.
Dated this 22nd day of December 1896.
ABEL & IMRAY,
Agents for the Applicant.