A New Process of Moulding and Apparatus therefor.
Year: 1890

page_text: Date of Application, 22nd Jan., 1890-Accepted, 3rd May, 1890
COMPLETE SPECIFICATION.
A New Process of Moulding and Apparatus therefor.
I NESTOR MARTIN of Huy, near Liége in the Kingdom of Belgium, Manufacturer,
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:
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My invention relates to improvements in moulds for casting metals and refers to
a new method of moulding which is intended to greatly reduce labour in mould
making for casting metals such as cast-iron, brass, and other metals capable of being
melted and cast.
The new process is very advantageous especially in the manufacture of marketable
articles on a large scale.
In carrying my invention into practice I construct moulding plates, the use whereof
forms one of the chief features of my invention. I further construct a machine for
moulding purposes.
And in order that my invention may be more fully understood I have shown the
same in the accompanying drawings in which Fig. 1 is a plan of the frame enclosing the
moulding plate a in its centre and formed of two parts i and 9 Fig. 2 being a longi-
tudinal and Fig. 3 a transverse elevation thereof. Fig. 4 is a longitudinal and Fig. 5
a transverse section on lines A. B. C D of Fig. 1 respectively. Figs. 7. 8. and 9
illustrate respectively in plan and in front and end elevation the construction of my
improved moulding machine.
a (Fig. 1) is my improved mould table on both sides of which are formed a series
of patterns or dies bb &c. being fac-simile of the object requiring to be reproduced
by casting. This table is intended to be used in conjunction with the moulding
frame F consisting of two hollow parts ih fitting exactly one over the other. These
parts are joined by means of perforated ledges or brackets 11 formed thereon through
which pass the pins p p¹ &c. As shown in Figs. 2, 3, 4 and 5, the moulding plate is
placed centrally between the parts i h of the moulding frame F.
My improved moulding machine consists of a frame carried upon the vertical
sides o. o which support likewise two shafts m m¹ the first of which carries on its left
outer end the lever c' while the lever c is mounted upon the right outer end of the
shaft m¹.
Two rods d d¹ are connected at their lower extremities with cranks n n' mounted on
the shaft m² while two similar rods e e¹ are likewise connected with cranks q q' at their
lower ends, these cranks being mounted upon the shaft m. The upper ends of the
rods d d and e e¹ are respectively connected with a table f and f¹ which carry each
four rods or pins g g¹ g³ g³ and j j¹ 23 the former pins serving to raise the upper
part of the frame F, while the latter pins are used to lift the moulding plate a.
To carry out a moulding operation, according to my invention I first pass the
lower part of the frame F, furnished with the perforations ss1 2 3 (Fig. 1) over the
pins or rods g g g² g³ of the moulding machine (Figs. 8, & 9).
The moulding plate a is subsequently placed over the said part h the pins g g¹ g² g³
passing through corresponding perforations of the former plate.
In this position the moulding plate a rests upon the edges of the part / while its
periphery projects beyond these edges. When the frame F is first set in position in
the moulding machine the part h is placed uppermost in order to be filled up with sand
which is compressed by hand or by machinery.
The frame F is now inverted so that the part 9 comes uppermost being also filled
with sand likewise compressed afterwards. By imparting a succession of knocks or
blows on the edges of the moulding plate the dies or patterns are disengaged before
removing the moulding plate.

page_text: This removal is effected by the machine in the following manner the table 1 is
raised by the lever c and its four rods or pins g g' g² 9³ fixed thereon raise the ledges
or brackets&c. of the uppermost part i of the frame F and hence disengage this
part which is put on one side. The lever c¹ being now moved raises the table f
whereby the moulding plate a is lifted by the rods or pins jjjj³ pressing under the
projecting edges thereof so that this table is disengaged and removed, when the part i
of the frame F is placed again in position on the machine and joined to the lower-
most part in such a manner that the sand mould halves come into contact, the moulds
being in readiness to be filled with molten metal passed through a suitable opening
and running along the grooves v v₁ (Fig. 1).
It will appear obvious that when the moulding plate a has been removed, the upper
part of the frame comes in close contact with the part and is caused to sink a
distance equal to the thickness of the said plate whereby these two parts are joined so
as to produce objects of the predetermined form as if they had been moulded without
the moulding plate a intervening. When required this plate may have the dies
formed therein in intaglio instead of in relief as hereinbefore described and shown.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is―
The improved process of moulding and apparatus therefor consisting of a moulding
plate of cast iron or other suitable metal upon which are formed or sunk the patterns
or dies representing the article or object to be cast and which is arranged between the
two parts of a frame and operating upon a moulding machine substantially as described
and shown in the accompanying drawings and for the purpose set forth.
Dated this 22nd day of January 1890.
HUGHES, ELI & HUGHES,
76, Chancery Lane, London, W.C., Agents for the Applicant.