IMPROVE- MENTS IN MOULDING IRON AND OTHER METALS
Year: 1850

page_text: TO ALL TO WHOM THESE PRESENTS. SHALL COME, I, ALEXANDER
DIXON, of Abercorn Foundry, Paisley, send greeting.
WHEREAS Her present; most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Twenty-fourth day of
October, One thousand eight hundred and fifty, in the fourteenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Alexander Dixon, my exors, adiñiors, and assigns, Her special license, full
power, sole privilege and authority, that I, the said Alexander Dixon, my
exors, admors, and assigns, or such others as I, the said Alexander Dixon, my
exors, admořs, or assigns, should at any time agree with, and no others,
from time to time and at all times during the term of years therein expressed,
should and lawfully might make, use, exercise, and vend, within England,
Wales, and the Town of Berwick-upon-Tweed, 'my Invention of "IMPROVE-
MENTS IN MOULDING IRON AND OTHER METALS; in which said Letters Patent is
contained a proviso, that I, the said Alexander Dixon, shall cause a particular
description of the nature of my, said Invention, and in what manner the same
is to be performed, by an instrument in writing under my hand and seal, to
be inrolled in Her said Majesty's High Court of Chancery within six calendar
months next and immediately after the date of the said in part recited Letters
Patent, as in and by the same, reférence being thereunto had, will more fully
and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Alexander Dixon, do hereby declare that the nature of my said Invention,
and the manner in which the same is to be performed, are particularly
described and ascertained in and. by the following statement thereof, reference

page_text: Figure 1 shews a side elevation of the machine; Figure 2 a front elevation;
Figure 3 shows a section of a pattern for making pipes, but which, as well as
the mould box, will be varied when making other articles, as will be readily
understood by the engineer. Figure 4 shows a section of the mould box and
core bar, and on one side the pattern inserted, and on the other the condition
of things before entering the pattern. In making of moulds for pipes accord-
ing to my Invention, and which is also applicable to the making of moulds for
cylinders, fluted columns, square tubes, and other castings of a similar nature,
by varying the patterns and mould box accordingly, the core bar A is put
into the socket a in plate or carriage B, on which the moulding box C rests.
I use the moulding box either with hinges b, b, or without them. The mould-
ing box C is now placed round the core bar A; the plate B, on which the
moulding box C and the core bar A rests, forms the bottom of the moulding
box C, and having wheels c, c, can be removed on rails. d, when moulded, to
be blackened, dried, and to receive the molten metal; the moulding box C
and the core bar A being placed, the plates e, e, are now inserted at the
bottom of the moulding box C, having a recess f, f, in them opposite to another
recess 9, 9, in the core bar A, both of which recesses are to receive the dis-
placed sand and to allow the iron pattern D to go to the extreme length. The
iron pattern D is the exact size of the pipe to be moulded, but allowance is
made for the shrinkage of the metal, and is to be turned externally and inter-
nally in order to ensure a smooth surface. The sharpened point of the iron
pattern D at h has the bevel equally on each side; the iron pattern D is fixed
to the machine on the chuck E; the machine is a large vertical slide with
'rack and pinion with wheels, and driven by power. I do not confine myself
to the use of this machine; other machinery may be employed for effecting
the like object. The pattern D being now fixed to the chuck E, the moulding
box C is to be filled with sand to i; a mould j is put over the core bar at k, so
that, when the moulding box C is being filled with sand, it allows an equal
thickness of sand for displacement by the facet of the pattern D; the mould j
is withdrawn, and a plate or ring m is to be placed on the top of the sand on
the core bar at n, which, when the pattern is down, may be secured in its
place with a catch o before the pattern D is withdrawn. The machine is now
set in motion, and the pattern D descends in the moulding box c, displacing
the sand on either side, coating the internal surface of the moulding box c aud

page_text: the external surface of the core bar a with sand, till it reaches the bottom,
when the chuck E presses the plate M down on the top of the sand on the top
of the core bar at n, until the plate m is fixed by the catch o¹, and which plate
being now in its position prevents the pattern from tearing away the sand from
the core bar in its upward motion. The pattern D is now to be withdrawn to
its former position. The mould and core are now complete, except the
forming of the facet core p and the bead q. The facet core is formed in a
separate core box in the usual way and placed on the top of the sand on the
core bar at n; the plates e are removed, and the plates 9 are inserted and
come up against the bevel part of sand at the bottom of the core; these plates q
form the bead. The mould and core are now complete, and ready to be
removed to a frame with a winch or any other power, in order to raise the
moulding box with mould from off the core to receive the black wash for dry
sand, or the blacking for green sand. When blackened, the box with mould
is again put over the core and core bar, and conveyed to the stove to be dryed
if for dry sand, and when dried the cake () (), with metal gates (s) (s), and
facet core (p) (p), is now placed on the top of sand on core bar at (n) (n),
and is now ready to receive the molten metal.
. I claim the means of making the mould and core of pipes, cylinders, fluted
columns, square tubes, and other castings of a similar nature, as herein
explained.
In witness whereof, I, the said Alexander Dixon, have hereunto set my
hand and seal, this Fourteenth day of April One thousand eight
hundred and fifte one