Casting Pipes, Cylinders, and the like.
Year: 1885

page_text: Casting Pipes, Cylinders, and the like.
We MILES CORNTHWAITE and JOHN CORNTHWAITE both of Parton near White-
haven in the county of Cumberland, Ironfounders do hereby declare the nature
of the said invention for "IMPROVEMENTS IN MACHINERY FOR MANUFACTURING
MOULDS FOR CASTING PIPES, CYLINDERS AND THE LIKE" to be as follows:-
This invention relates to Improvements in machinery employed in the production
of moulds used in the manufacture of cast metal pipes or tubes, cylinders and like
articles and the improvements consist in the construction and employment of what
we term a "moulder" constructed as hereinafter described and to which a vertical
and rotary motion is communicated by suitable means so as to press the sand
against the side of the mould-box as hereinafter described.
Our improved "moulder" is formed of cast iron, steel or other metal, and is
made with three or more tangential wings or arms, and of such a diameter as is
required for the outside diameter of the casting to be made leaving sufficient space
between its arms and the interior surface of the moulding box for the required
thickness of sand to be given to the mould. The improved moulder is adapted to
be moved up and down and revolved within the mould box by any suitable
arrangement such as by means of a screw or worm driven by bevel or geared
wheels or otherwise. When a screw is employed it can be guided in brackets
bolted to the wall of the building-We employ the usual form of mould boxes
modified for this invention which we prefer to bolt to a carriage running on rails-
Underneath the "moulder" is placed a finishing piece or plate and a print both of
which run loose on the screw and form a table for the moulder to feed from-
Above the moulder we place a cone and at the top of the mould box is a dish
with a cross head for the purpose hereinafter described.
By this arrangement in order to form a mould for giving the external shape to
a pipe, cylinder or the like, the first of the mould-boxes is brought under the
moulder which is moved down within the mould-box the dish being thereby placed
on the top of the box and the print fitting into the bottom plate which is bolted on
the carriage..
The sand to be moulded is then put in the box, and the screw being set in
motion, the moulder will be revolved and moved upwards and from its peculiar

page_text: construction it will press the sand against the interior surface of the box and being
followed by the finishing piece and print a smooth and circular tube of sand will be
formed suitable for the outside moulds of pipes, cylinders or the like.
As the moulder passes through the top of the mould-box, the cone lifts the dish
by means of the cross head, leaving the sand level and true with the top of
the mould box.
The faucet or flange as the case may be is moulded separately in the usual
manner and as the carriage is moved for the next box to be brought under the
moulder the faucet or flange is placed on the top of the box already moulded.
After all the boxes on the carriage are moulded in this manner they are run in
the stove to be dried, when they are taken from the stove, and, for hollow castings,
the usual core forming the inside of the mould is then lowered into the mould the
end of the core bar fitting into the bottom plate. The mould is then ready to
serve for casting.
This system of moulding pipes, in addition to saving a great amount of labour in
moulding will also effect a considerable saving in not having to lift the moulds, as
the moulding boxes will not be required to be removed from the carriage.
100

page_text: Casting Pipes, Cylinders, and the like.
We MILES CORNTHWAITE and JOHN CORNTHWAITE both of Parton, near White-
haven in the county of Cumberland, 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 relates to Improvements in machinery employed in the pro-
duction of moulds used in the manufacture of cast metal pipes or tubes, cylinders
and like articles and the improvements consist in the construction and employment
of what we term a "moulder" constructed as hereinafter described and to which a
vertical and rotary motion is communicated by suitable means so as to press the
sand against the side of the mould-box as hereinafter described.
Our improved "moulder" is formed of cast iron, steel or other metal, and is made
with three or more tangential or radial' wings or arms, and of such a diameter as to
leave sufficient space between its arms and the interior surface of the moulding
box for the required thickness to be given to the mould. The improved moulder is
adapted to be moved up and down and revolved within the mould box by any
suitable arrangement such as by means of a screw or worm driven by bevel or
geared wheels or otherwise. When a screw is employed it can be guided in brackets
bolted to the wall of the building-We employ the usual mould boxes which we
prefer to bolt to a carriage running on rails. Underneath the "moulder" is placed
a finishing piece or plate and a print both of which run loose on the shaft or screw
and form a table for the moulder to feed from-Above the moulder we place a cone
and at the top of the mould box is a dish with a cross head for the purpose herein-
after described.
In order to enable our invention to be fully understood we will proceed to
describe the same by reference to the accompanying drawings in which figure 1.
represents a front elevation of a machine constructed according to our invention for
manufacturing moulds for casting pipes and cylinders having a parallel bore the
machine being fixed to one of the walls of the building, and an elevation partly in
section of the mould boxes and carriage; figure 2 is a plan of figure 1; figure 3 is
a cross section taken through the moulding pit and shewing on the right hand side
a side elevation of the machine and cross section of one of the mould boxes and
carriage and on the left hand side an end view of the carriage shewing another of
the mould boxes in elevation with its core in position and the mechanism for
moving the carriage the other parts of the machinery not being shewn; figure 4 is
a plan and figures 5 and 6 elevations of the improved "moulder"; figures 7, 8
and 9 are details of part of the machine; figure 10 is a vertical section shewing our
improvements adapted for manufacturing moulds for tapered pipes or columns.;
figure 11 is a sectional plan of figure 10; figure 12 is an elevation partly in section
of the same the view being at right angles to that shewn in figure 10; figure 13 is
plan of figure 12; figure 14 is a sectional plan and figure 15 is a vertical section.

page_text: of the moulder shewn in figures 10 to 12; figures 16 and 17 are similar views to
figures 14 and 15 but shewing our moulder adapted for making a mould having
four sides such as an ingot mould; figures 1 to 3 are drawn to a scale of about one
inch to the foot; figures 4 to 9 and figures 16 and 17 about a quarter full size;
figures 10 to 13 about one and a half inches to the foot and figures 14 and 15 about
half full size. Similar letters in all the figures represent similar parts..
We will first describe our invention by reference to figures 1 to 9.
a, represents our improved moulder formed of metal as herein before described
and b, b, b, are the tangential wings or arms formed on the same the shape of the
said wings or arms being clearly seen by reference to figures 4, 5 and 6; c represents
the screw which is attached to a shaft or rod d, to which the moulder a is fixed
and serving to move the latter up and down and at the same time to revolve it
within the mould box e; fand f₁, are the brackets and g, the wall of the building
to which the brackets are bolted; h, is the bevel wheel for operating the screw c,
and which receives its motion from a bevil pinion i, driven by the gear wheels j, k,.
placed outside the bracket so that they can be readily removed to allow of sub-
stituting change wheels of various power and operated by the driving pulley 1, to
which motion is communicated from any suitable source of power the whole of the
said gearing being mounted on the bracket f; the bevil wheel h, is provided with
a sleeve m, having an interior feather over which slides a longitudinal groove n, in
the screw c, whereby the screw is caused to rotate and at the same time is allowed
to move vertically; the screw c, works in a screw box o (shewn detached in vertical
section, side elevation and sectional plan respectively at figures 7, 8 and 9 the
vertical section figure 7 being taken on the line A, B, of figure 9) on the bracket f;
the said box is provided with a divided nut p, p, the two parts of which can be
moved towards or away from each other by means of a lever handle q, arranged to
operate, when rotated, a disc or plate r, provided with a pair of eccentrically
curved slots 8, 8, working over two pins t, t, one fixed to each half p, of the nut;
by this means when the nut p, p, is moved away from contact with the screw_c,
the latter together with the moulder a, can be raised or lowered when required
without it being necessary to operate the gearing thereby preventing much loss of
time; u, (figure 3) is a counterweight for assisting to raise the screw c, when so
released from the nut p, p; the rod of the said counterweight being attached to
a suitable device (not shewn in the drawing) also connected with the upper end
of the screw at v; w, is the carriage to which we prefer to bolt the mould boxes e,
which are of ordinary construction; x, x, are the rails on which the carriage w,
runs; y, is a toothed pinion working in a rack 2, at the sides of the carriage and
actuated by means of a hand wheel, a', whereby the carriage w can be moved so
as to bring the mould boxes e, in succession accurately in position under the
moulder a; b, is the finishing piece or plate and c¹, is the print, both of which run
loose on the shaft or rod d, and form a table for the moulder a, to feed the sand
from as shewn in figure 1 wherein the moulder a is represented in operation within
one of three mould boxes e, and in which d¹ represents the sand which has been
partly formed up the mould box; el, el, are the bottom plates of the mould boxes e,
formed with an opening forming a seat for the print c¹, as shewn at the right hand
side of figurê 3, in which the moulder is shewn in position at the bottom of the mould
box ready to commence an operation; g¹, is the cone above the moulder a, and h¹,
is the dish which is placed on the top of the mould box; i, (figure 3) is the cross
head of the dish h¹, provided with a central hole or opening to receive the cone g¹,
when the moulder a, has reached the top of the mould box e, by which means the
dish h¹, is raised from the latter.
By this arrangement in order to form a mould for giving the external shape to
a pipe cylinder or the like, the moulder a and dish h¹, being raised into the
position shewn in dotted lines in figure 3 the first of the mould-boxes is by
means of the hand wheel a¹, and pinion y, brought under the moulder ά; the
nut p, p, being moved free of the screw c, in the manner hereinbefore described,
the moulder is moved down within the mould-box & the dish, being thereby

page_text: placed on the top of the box and the print c¹ fitting as shewn in the said figure
into the bottom plate e', which is bolted on the carriage w.
The sand to be moulded is then placed in the box e, and the two parts of the
nut p, p, having been again engaged with the screw c, and the latter having been
set in motion, the moulder a, will be revolved and moved upwards as shewn in
figure 1 and from its peculiar construction it will press the sand d¹, against the
interior surface of the box e and being followed by the finishing piece b¹, and
print c¹, a smooth and circular tube of sand will be formed suitable for the outside
moulds of pipes, cylinders or the like.
:
As the moulder a passes through the top of the mould-box e, the cone g'; will
lift the dish h¹ by entering the hole or opening of the cross head i¹, leaving the
sand level and true with the top of the mould box e.
The faucet or the flange as the case may be is moulded separately in the usual
manner and as the carriage w, is moved for the next box e, to be brought under the
moulder a the mould j", of the faucet (or flange) is placed on the top of the box
already moulded in the position shewn in the mould boxes at the right hand side
of figure 1 and the left hand side of figure 3.
We would here remark that for convenience of description we have shewn these
views of the mould boxes with the usual core placed therein although in practice
this is not done until after the mould has been dried as hereinafter described.
:
After the moulds have been formed in all the boxes e, on the carriage w, in this
manner they are run in the stove to be dried, after which they are taken from the
stove, and for hollow castings the usual core forming the inside of the mould is
then lowered into the mould as shewn at k¹, in figure 1, the end 7, of the core
bar k, fitting into the bottom plate e¹. The mould is then ready to serve for
casting; m², representing the space between the mould and the core in which the
metal is run in.
We have described the mould for the faucet or the flange as being placed on the
top of the mould box e, as is the case when pipes or the like are to be cast with the
socket upwards, it will however be obvious that when it is required to cast them
with the socket downwards the mould box e, is placed on the socket box, and in
this case the core forming the inside of the socket would be made separately from
the rest of the core and be placed in the mould from the bottom in the usual way.
In order to adapt our improved machinery for manufacturing moulds for casting
tapered pipes or columns as shewn in figures 10 to 15 we form the wings or
arms 6, of the moulder a, loose and arrange the same so that they can be moved
outwards by a tapered column or plug m¹, as the moulder a, is lowered into the
mould box e; the said wings or arms b, being caused to move inwards when
passing up over the column or plug m³, when forming the mould by means of
springs n¹, bearing against projections or flanges o¹, ou the inner ends of the wings
or arms b, and against the inner sides of a box p¹, (as shewn in figure 14) attached
to a pipe or hollow shaft or rod d, passing over the column or plug m³, and fixed
to the screw c; the wings or arms b, slide through openings in the said box pl, and
are provided with friction rollers r¹, to facilitate the rotation of the moulder a
around the column or plug m³, and with other rollers 8', to facilitate their sliding
movement.
The finishing piece or plate 6' is made in four pieces, and is gradually moved
inwards to give the required taper form to the mould, or outwards by a tongue t¹,
on each of the wings b, which works in a groove u, in the plate 6'. The spaces
between the four sections of the plate b¹, as they are moved out are covered by
thin pieces of steel or iron v¹, one of which is attached to each section as shewn
at w, w, and slides over the opposite end of the next section as shewn in figure 14
so that the sand in the mould box e, cannot get between the sections of the plate b²,
to prevent it working; thin pieces of steel or iron x¹¹ are also applied in a
somewhat similar manner over the periphery of the finishing piece or plate b¹, so
as to fill up the spaces between the four sections of the same as shown in the said.
figure.

page_text: The construction of the moulder and finishing piece shewn in figures 16 and 17
is similar to that herein before described and shewn in figures 15 and 16 with the
exception that the shape of its parts is somewhat altered to adapt it for manu-
facturing a mould having four sides such as an ingot-mould and it will therefore
be understood without further description.
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. In machinery for manufacturing moulds for casting pipes, cylinders and the
like the use of a "moulder" provided with a number of wings or arms and
adapted to be moved up and down and rotated within a mould box substantially
as and for the purposes herein before described.
2. The combination with a moulder finishing piece and print constructed as
herein described and shewn in figures 1, 3, 4, 5, and 6 of the arrangement for
operating the moulder for making moulds for casting pipes having parallel bores
substantially as hereinbefore described and represented in figures 1 to 3 and 7 to 9
of the accompanying drawings.
1.
3. The combination with moulders and finishing pieces or plates constructed and
arranged as herein described and shewn in figures 14 to 17 of the improved
machinery adapted for making moulds for casting taper pipes and columns sub-
stantially as hereinbefore described and represented in figures 10 to 13 of the
accompanying drawings.
4. The improved machinery for making moulds for casting pipes, cylinders and
the like hereinbefore described and represented in the accompanying drawings.
Dated the 27th day of February 1886.
G. F. REDFERN,
Agent for the Applicants.