An Improved Apparatus for Producing Chilled Castings.
Year: 1893

page_text: Date of Application, 8th Feb., 1893
Complete Specification Left, 5th Dec., 1893-Accepted, 6th Jan., 1894
PROVISIONAL SPECIFICATION.
An Improved Apparatus for Producing Chilled Castings.
WILLIAM LEWIS and JOHN DAVIES, Britannia Foundry, Merthyr Tydvil,
Founders and Fitters, do hereby declare the nature of this invention to be as
follows
―:
This invention consists of metal blocks or moulds (of steel, iron, or any suitable
material) in two or more parts, as we find necessary for producing the casting
required. The impression is made on the contact faces of the blocks or moulds.
The apparatus is so constructed that it will revolve on its bearings. These
bearings are arranged on centre of discs and supported by standards. The parts
of the blocks or moulds are brought together and separated by means of a swift
screw and lever, hand wheel, or other suitable gearing, which is connected to end
of screw.
The other end of the screw is held in a socket which is fastened on
back of mould. The nut for screw is fitted in centre of bearing. The discs are
held together by metal guide rods which pass through holes on sides of moulds.
The ends of these guide rods are fastened to discs. The parts of mould move
backwards and forwards on guide rods. The apparatus is so arranged that the
blocks or moulds are interchangeable, and articles of various shapes can be made
in iron, steel, and alloys of these and other metals.
Dated this Tenth day of January 1893.
WILLIAM LEWIS.
JOHN DAVIES.
COMPLETE SPECIFICATION.
An Improved Apparatus for Producing Chilled Castings.
We, WILLIAM LEWIS and JOHN DAVIES, of Britannia Foundry, Merthyr
Tydvil, both Engineers and Ironfounders, 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:-
This invention consists in improved machinery or apparatus for producing chilled
castings. According to this invention the iron or steel mould in which the castings
are made is divided, the separate parts being slung on horizontal supports con-
" referred to
nected at each end to crossheads which take the place of the "discs
in the Provisional Specification.
Through one of these crossheads is passed a screw which works in a standard
as a nut. The inner end of this screw is so connected to one part of the mould as
to be capable of turning in the connecting socket. The outer end of the screw is
provided beyond the standard with a hand-wheel or its equivalent. By turning
the hand-wheel the screw is rotated, and that part of the mould to which the screw
is connected is moved away from or towards the other part of the mould according
to the direction in which the hand-wheel is turned. The crosshead which is at
the end opposite to the hand-wheel is supported in a standard. The apparatus is
so constructed that the moulds are readily removed for substitution of others, or
for other purposes.
In using the appliance one part of the mould is adjusted in position on the

page_text: supporting rods and the other is screwed up to close on it by the hand-wheel and
screw aforesaid.
The molten metal is then run in, and, after the casting has sufficiently cooled,
the mould is turned through half a revolution. The screw is then operated to
open the mould and the casting drops to the ground.
In the accompanying sheets of illustrative drawings
Fig. 1 represents a side elevation and Fig. 2 a plan of our improved machinery
or apparatus for producing chilled castings.
Fig. 3 is a view of the end opposite to the hand-wheel.
Fig. 4 is a view at the hand-wheel end.
In the example illustrated the mould is in two equal divisions a and b. These
parts are slung on the horizontal rods c connected transversely by the cross-
heads d, of which d' is readily disconnected and, when required, removed for
change of moulds, or for other purpose. The crosshead d is provided with a
journal which is carried in bearings in the standard e. The crosshead d' has a
hollow boss through which is loosely passed a longitudinal screw f fitted to work
in the standard e¹ as a nut. At its inner end the screw f is connected to the
part 6 of the mould in such manner that the screw is capable of turning in the
connection and thus of moving the part of the mould away from or towards
the part a.
In practically using the appliance the part a of the mould is first slung upon the
rods c and moved as far as it will go towards the crosshead d. It is then fixed in
position. The part of the mould is then made to follow it and by means of
pressure applied through the screw f the part b is firmly pressed against the part a,
thus securely closing the mould. The molten metal for the casting is run into the
mould through a pouring hole provided for that purpose at the top of the mould.
When the casting has sufficiently cooled, the mould is turned through half a
revolution about the pivots of the frame c, d, d'. By turning the screw f in the
proper direction the part 6 of the mould is then withdrawn from the part a, and the
'casting drops to the ground.
In the production of some kinds of castings it is necessary to employ means for
preventing escape of molten metal from the mould, and for assisting to keep the
mould securely closed. In the example illustrated such means are shown as
adopted in the process of casting a hollow anti-friction roller the outline of which
is indicated in dotted lines at Fig. 1. The roller has at each end a journal
projecting beyond the mould. In this case, when the mould has been closed by
the screw a box charged with sand is placed on the top of the mould and
clamped by the cross-bar h and binding screw i.
Prior to running in the metal, the mould is reversed so as to bring the screw i
nearest the ground. A box containing sand is then placed on the upper face of the
mould and is surmounted by weights. In this box is the pouring hole through
which the molten metal is run into the mould. When the casting has sufficiently
cooled, the weighted box at the top is removed and the mould is again turned to
bring the screw i uppermost.
The latter is now loosened and the bar h removed. The screw f is then operated
to withdraw the part 6 of the mould from the part a, and the casting falls to the
ground.
In other cases, one box only need be used. These accessories in casting are
referred to simply as indicating adaptation of the apparatus to varying forms of
castings.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :--
Improved apparatus or machinery for producing chilled castings, consisting of
divided moulds of steel or iron slung on suitable supports and capable, by means of
an adjusting screw, or its equivalent, of being held tightly together and separated

page_text: at will; the supports being so arranged as to turn on pivots when required
carrying the moulds with them, substantially as herein before described with
reference to the accompanying drawings and for the purposes specified.
Dated this 2nd day of December 1893.
NICHOLAS WATTS,
Chartered Patent Agent.