Improvements in the Method of and Apparatus for Producing Metal Castings.
Year: 1897

page_text: Date of Application, 30th Aug., 1897
Complete Specification Left, 10th May, 1898-Accepted, 11th June, 1898
PROVISIONAL SPECIFICATION.
Improvements in the Method of and Apparatus for Producing
Metal Castings.
We, ARTHUR HOLLINGWORTH, of 9, Eleanor Street, Huddersfield, Engineer,
and WILLIAM STEAD, of 6, Ducie Terrace, New Wortley, Leeds, Iron Moulder, do
hereby declare the nature of this invention to be as follows:-
_
The object of our invention is to prevent scum, slag, dirt, and the like from
getting into castings while being moulded.
We employ a runner bush of an improved form, having preferably two compart-
ments connected by an aperture preferably about two inches above the mould box.
This aperture is at an angle, and is larger than the aperture in the runner box.
Within the second compartment is formed a circular space in the sand. The metal
is poured into the first compartment and passes through the inclined aperture,
which induces the metal to swirl round the second compartment. This circular
motion keeps the scum and refuse at the top, the sound metal passing through the
running peg into the mould.
The runner bush may be made in one, two, or more parts as desired, fixed
together by pins, hinges, or other suitable means.
JOHN E. WALSH,
Royal Exchange Chambers, Boar Lane, Leeds,
Patent Agent for the Applicants.
Improvements in the Method of and Apparatus for Producing
Metal Castings.
We, ARTHUR HOLLINGWORTH, of 9, Eleanor Street, Huddersfield, Engineer, and
WILLIAM STEAD, of 6, Ducie Terrace, New Wortley, Leeds, Iron Moulder, 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 :-
The object of our invention is to prevent scum, slag, dirt, sulphurous gases,
or other foreign matter from getting into castings while being moulded.
DESCRIPTION OF DRAWINGS.

page_text: We employ an improved form of runner bush, consisting of an outside frame A,
with a central partition or core B which divides the bush into compartments C and
D, which are lined with green sand E.
The runner bush is placed over the mould box, and the molten metal is poured
from the ladle into the compartment or well C, which may be of any desired shape,
and then passes through an aperture or communication hole F in the partition or
core B into the circular compartment or whirl box D. The said communication
hole is preferably curved and inclined, so as to cause the metal to whirl round
or rotate in the whirl box D, this rotary motion releasing any sulphurous gases
and causing the slag and other foreign matter to rise to the top.
When the whirl box is full the down runner G, which is provided with a
conical plug H with lifting rod J, is opened and the sound metal passes into the
mould, the slag and other foreign matter being retained in the bush. The
supply of metal in the well D is kept up by the moulder until metal shows in
the riser of the mould box.
The down runner G is preferably close to the side of the whirl box, and
directly under the communication hole F, which is preferably about two inches
above the said down runner.
The partition or core B is preferably made of dry sand, and fits into a slot K at
each side of the frame A, so as to be removable.
:
Or the core B may fit into slots made in the sand instead of in the frame A, a
solid wooden plug with side projections being employed to shape the sand.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is :-
1. The construction of a runner bush for use in casting metals, consisting of two
compartments connected by an aperture so arranged as to give a rotary motion to
the molten metal before entering the mould box, thus causing slag and other
foreign matter to float at the top and preventing same from passing into the mould.
2. The runner bush with compartments C and D, connected by an aperture Fin
a core or partition B, and down runner G with plug H, substantially as and for the
purposes shown and described.
I ..
Dated this 22nd day of April 1898.
JOHN E. WALSH,
Royal Exchange Chambers, Boar Lane, Leeds,
Patent Agent for the Applicants.