Improvements in Moulds for Casting Ingots of Steel or other Metals.
Year: 1892

page_text: Date of Application, 15th July, 1892
Complete Specification Left, 15th Apr., 1893-Accepted. 15th July 1893
PROVISIONAL SPECIFICATION.
Improvements in Moulds for Casting Ingots of Steel or other Metals.
GEORGE ALFRED CLOUGH Engineer Lynnfield Norton near Stockton on Tees
do hereby declare the nature of this invention to be as follows :-
I make ingot moulds in two parts, dividing them longitudinally at opposite
corners and internally parallel.
The two parts of the mould are held together by links on pins or gudgeons,
formed or fixed on the sides of the mould; their centres being equidistant from
the joint of the two parts forming the mould, but, transversely the pins or
gudgeons are placed higher in one half mould, than in the other, so that a line
drawn from their centres would be at an angle with the vertical joint when the
mould is closed, and ready to receive the molten material.
To lift the mould from the ingot, I employ a sling consisting of two unequal
lengths of chain, one end of each length terminates in a hook the other ends
being attached to a ring, to which the medium for lifting the mould is connected.
The hooks being coupled one on to cach half of the mould, and the ring to the
crane or lifting medium; the act of lifting causes one half the mould to be lifted
first, and to recede from the other, to an extent due to the angle at which the
connecting links were originally fixed, and thus free the mould from the ingot.
The mould remains open so long as it is suspended by the sling, but, as soon
as, in lowering it, the lower half comes in contact with the casting pit floor, it
closes ready for a cast, and is held closed by a catch working on a pin on the
one half mould, being moved over the other half.
Dated this 12th day of July 1802
GEORGE ALFRED CLOUGH.
COMPLETE SPECIFICATION.
Improvements in Moulds for Casting Ingots of Steel or other Metals.
GEORGE ALFRED CLOUGH Engineer Norton near Stockton on Tees 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 :-
I make ingot moulds in two parts dividing them longitudinally at opposite
corners by preference and internally parallel.
The two parts of the mould are held together by links on pins or gudgeons,
formed or fixed on the sides of the mould, their centres being equi-distant from the
joint of the two parts forming the mould, but transversely the pins or gudgeons are
placed higher in one half mould, than in the other, so that a line drawn from their
centres would be at an angle with the vertical joint when the mould is closed and
ready to receive the molten material.
To lift the mould from the ingot I employ a sling, consisting of two unequal
lengths of chain, one end of each length terminates in a hook, the other ends being
attached to a ring, to which the medium for lifting the mould is connected. The
hooks being coupled, one to each half of the mould, and the ring to the crane or
lifting medium, the act of lifting causes one half the inould to be lifted first, and to
recede from the other to an extent (due to the angle at which the connecting links
were originally fixed) and thus free the mould from the ingot. The mould remains
open, so long as it is suspended by the sling, but as soon as, in lowering it the
lower half comes in contact with the casting pit floor, it closes ready for a cast, and
[Price Bd. 1

page_text: is held closed by a catch working on a pin, on the one half mould, being moved
over the other half.
This invention, whilst enabling ingots to be cast parallél, and providing for the
necessary and rapid expansion incidental to the contact of molten metal with a
comparatively cool metallic surface, also provides for giving great facilities for
freeing the moulds from the ingots when cast, and this, without the necessity of
.resorting to the use of screw keys or levers, to free either bolts or eccentrics as
must be done in some cases where split moulds are used.
In order that my invention may be understood, I will, by the aid of the
accompanying drawing proceed to describe it.
Fig. 1 is an elevation of an ingot mould, showing the lifting chain attached
to it.
Fig. 2 shows the mould open, and in position for leaving the ingot.
Fig. 3 is a transverse section on the line A. B Fig. 2.
Fig. 4 is a plan of the mould.
The two halves a and of the mould, have the pins or gudgeons e formed with
them, on these pins or gudgeons c, links d are placed for coupling the two halves of
the mould and together. It will be seen on referring to Fig. 1 that the pins or
gudgeons care placed lower on the half mould a than on b, this causes the links d
to assume an angle at the time when the mould is ready for the molten metal being
poured into it. The catch e is for the purpose of preventing any tendency of the
molten metal lifting the half mould a.
g
When the metal which is poured into the mould is sufficiently set to permit of
the mould ab being taken from it, the shorter length of the sling chain ff is
attached to the half mould a by means of the hook and the longer length 1 of
the sling to the half mould 6 by means of the hook ', on lifting power being
applied to the ring, the shorter length of the chain will become tight first, and
as the half mould a is being lifted, it is at the same time, leaving the other half b,
until the links d become about on a level as shown in Fig. 2 when the maximum
amount of opening allowed by the position of the pins or gudgeons c has been
attained. The whole mould may now be lifted from the ingot.
In lowering the mould, as soon as the half & comes in contact with the floor, the
half mould a begins to close, and goes on closing until the sling chain becomes
slack, when the mould is ready for another cast.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, 1 declare that what I
claim is:
1. Coupling the parts of split ingot moulds in such a manner that the weight
of the mould itself is utilised in keeping said parts in close contact, at the same
time allowing for expansion during the casting operation.
2. Constructing split ingot molds in such a manner that by the use of a sling
(for lifting them off the ingots) having a long and a short length, the application
of lifting power tends to open the mould transversely and thus free the ingot.
J
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1000
GEO. A. CLOUGH.