Improvements in Apparatus for Making Moulds for Casting.
Year: 1892

page_text: Date of Application, 23rd Feb., 1892
Complete Specification Left, 19th Nov., 1892-Accepted, 31st Dec., 1892
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Making Moulds for Casting.
1, STEPHEN ALLEY, of Sentinel Works, Polmadie, in the County of Renfrew,
North Britain, Engineer, do hereby declare the nature of this invention to be as
follows, that is to say :-
My said invention has for its object to improve the construction of mould
making apparatus and especially to adapt the same for making moulds for large
flanged plates or other articles of forms not conveniently dealt with by existing
apparatus.
In carrying out my invention the mould box or flask is held by a frame arranged
to be turned over about an axis at one side of the moulding machine, and after
receiving the sand or mould miterial and having the same compressed, is turned
over to be deposited on a truck or waggon. The arrangements for filling in the
sand, and other details may be as described in Patent Specifications, Nos. 14885
and 16978 of 1890. The compression is effected by the downward movement of a
pressing or ramming block actuated, preferably, by means of one or more hydraulic
cylinders, the pressing block and its actuating details being arranged to be
sufficiently out of the way when the sand is being filled in. In one modification a
counterbalanced frame carrying the pressing block and actuating cylinder or
cylinders is mounted on trunnions enabling it to be turned to one side. In a second
modification one or more cylinders fixed below the table of the machine act by a
crosshead on side rods connected to the pressing block. In a third modification the
pressing block is carried by a lever frame centered at one side of the table of
the machine and actuated by means of one or more horizontal cylinders below
the table and connected to one or more downwardly extending arms of the lever
frame.
Within the table of the machine mechanism is fitted for entering and with-
drawing parts of the pattern, such as for inclined flanges for example, through the
pattern plate, such mechanism consisting preferably in the case of large articles of
rack-toothed bars acted on by pinions turned by rack-toothed bars actuated by
hydraulic-cylinders. When the sand has been filled in and compressed the movable
parts of the pattern are withdrawn, the mould box is turned over, and the main
part of the pattern is next withdrawn through a contour plate sufficiently to allow
of the frame with the contour plate and pattern being lifted up clear of the mould
box which can then be moved away on its truck.
ingot moulds, when
In the case of moulds for casting some large articles such as
the pattern is of an elongated form with small taper I apply an hydraulic cylinder
to withdraw the pattern through a contour plate after the sand has been rammed.
And I provide for a number of different sizes by making the contour plate with
circular aperture having a stepped edge in which rings of various sizes can be
placed; or each ring may be shaped for receiving a still smaller ring. The ring
or innermost ring used for each size whilst externally circular is made with an
inner opening shaped to fit the contour of the pattern which has to be withdrawn
through it.
Did this Tranty-second day of February 1802
EDMUND HUNT,
Applicant's Agent.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Making Moulds for Casting.
1, STEPHEN ALLEY, of Sentinel Works, Polmadie, in the County of Renfrew,
North Britain, Engineer, 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, that is to say :-
My said invention has for its object to improve the construction of mould
making apparatus and especially to adapt the same for making moulds for large
flanged plates or other articles of forms not conveniently dealt with by existing
apparatus.
In carrying out my invention the mould box or flask is held by a frame arranged
to be turned over about an axis at one side of the moulding machine, and after
receiving the sand or mould material, and having the same compressed, is turned
over to be deposited on a truck or waggon. The arrangements for filling in the
sand, and other details may be as described in Patent Specifications Nos. 14885
and 16978 of 1890. The compression is effected by the downward movement of a
pressing or ramming block actuated preferably by means of one or more hydraulic
cylinders, the pressing block and its actuating details being arranged to be
sufficiently out of the way when the sand is being filled in. When the sand has
been filled in and compressed the movable parts of the pattern are withdrawn,
mechanism being provided for the purpose, the mould box is turned over, and the
main part of the pattern is next withdrawn through a contour plate sufficiently to
allow of the frame with the contour plate and pattern being lifted up clear of the
mould box which can then be moved away on its truck.
The invention also comprises, in the case of moulds for casting some large articles
such as ingot moulds, when the pattern is of an elongated form with small taper,
the application of an hydraulic cylinder to withdraw the pattern through a contour
plate after the sand has been rammed.
And in order that my said invention and the manner of performing the same may
be properly understood I hereunto append two sheets of explanatory drawings, to
be hereinafter referred to, and showing some modifications of my improved
apparatus for making moulds for casting.
Figure, 1, on Sheet, 1, of the drawings is a sectional side elevation and Figure, 2,
a sectional end elevation of one modification of my improved apparatus,
Figures, 3, and, 4, on Sheet, 2, being similar views of a second modification and
Figures, 5, and, 6, similar views of a third modification.
Figure, 7, is a plan and Figure, 8, a vertical section of apparatus employed in
the case of moulds for casting ingots moulds.
In these drawings the same reference letters and numerals are used to mark the
same or like parts wherever they are repeated.
In the modification of my improved apparatus shown in Figures, 1, and, 2, of
the drawings the flask, A, is held by a frame, B, having arms formed on it which
are hinged to fixed standards, C, placed at one side of the moulding machine, in a
manner to allow of the frame and the flask being turned completely over and
deposited upon a truck or waggon, D, the flask having previously received the
mould material and had the same compressed. A frame, E, carrying the pressing
block, E 1, and actuating cylinder (or it might be cylinders), E 2, is counterbalanced
by weights, E 3, and is mounted on trunnions, E 4, enabling it to be turned to one side
when the sand is being filled in. The sand having been filled in and the frame, E,
turned into a vertical position, the sand is compressed by the ramming block, E1,
actuated by the hydraulic cylinder, E 2. The ramming block, E 1, is steadied by
guide rods, F, fixed to it and sliding in guides, F 1, in the frame, E.

page_text: Within the frame, B, mechanism is fitted for entering and withdrawing parts of
the pattern, for example such as for moulding inclined flanges through the pattern
plate. Such mechanism consists, preferably, in the case of large articles, of rack-
toothed bars, G, to which the parts of the pattern to be withdrawn are fixed,
and which are acted on by pinions, H, turned by rack-toothed bars, J, actuated
hy hydraulic cylinders, K, fixed to the frame, B. When the sand has been filled
in and compressed the movable parts of the pattern are withdrawn, the flask, A, is
text turned over along with the frame, B, and the main part of the pattern is next
withdrawn through a contour plate sufficiently to allow of the frame, B, with the
contour plate and pattern being lifted up clear of the flask, A, which can then be
moved away on its truck, D. Any suitable known devices may be used for
securing the flask, A, to the frame, B, during the formation of the mould and the
turning over of the parts.
In the modification of my improved apparatus shown in Figures, 3, and, 4, the
general features are the same as in the inodification shown in Figures, 1, and, 2.
One hydraulic cylinder, L. (or it might be more) fixed below the table, B 1, of the
machine acts by a cross head, L 1, on side rods, L2, which slide in guides, L3,
formed on the table and are connected to the compressing or ramming block, E 1,
which can be raised sufficiently high to allow of the convenient filling in of the
O sand without being turned to one side.
In a third modification shown in Figures, 1, and, 6, the general features are
also similar to those shown in Figures, 1, and, 2, but the pressing block, E1, is
carried by a lever frame, M, centered on fixed standards, M, at one side of the
machine, and actuated by a horizontal hydraulic cylinder, M 2. (or it might be
more than one) centered on brackets, M 3, formed on the framing of the machine.
The ram of the hydraulic cylinder, M2, is connected by a crosshead, M 4, to
downwardly extending arms, M 5, of the lever frame, M.
For casting ingot moulds or like articles of an elongated form with small taper,
I employ apparatus shown in Figures, 7, and, 8, and comprising an hydraulic
cylinder, N, having fixed to the outer end of its piston rod, N1, a metal disk, N 2,
fitted to slide vertically, and having fixed on it the pattern, N 3, (shown in section
in Figure 8). After the sand has been rammed between the pattern, N 3, and an
outer flask or box, N 4, the pattern is by means of the cylinder, N, withdrawn
downwards through a contour plate, N 5. And I provide for a number of different
sizes by making several contour plates, all having stepped circular outer edges of
the same size to fit a circular aperture in an outer permanent ring, N 6, or smaller
rings may be fitted to the outer ring, N 6, to receive smaller contour plates, N 5.
The contour plate or innermost ring used for each size whilst externally circular is
made with an inner opening shaped to fit the contour of the pattern which has to be
withdrawn through it.
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:-
1. The combination of parts constituting the improved mould-making apparatus
substantially as hereinbefore described with reference to Figures, 1, and 2, of the
accompanying drawings.
2. The combination of parts constituting the improved mould-making apparatus
substantially as herein before described with reference to Figures, 3, and, 4, of
the accompanying drawings.
3. The combination of parts constituting the improved mould-making apparatus
substantially as herein before described with reference to Figures, 5, and, 6, of the
accompanying drawings.
4. In mould-making apparatus in which hydraulic compression is used, arranging
a box to which the flask is secured during the moulding operation, which can be
turned over to deposit the flask on a truck and which has within it mechanism
for withdrawing parts of the pattern substantially as hereinbefore described.

page_text: 5. The combination of parts constituting the mould-making apparatus sub-
stantially as herein before described with reference to Figures, 7, and, 8, of the
accompanying drawings.
Dated this Eighteenth day of November 1892.
EDMUND HUNT,
Applicant's Agent.