Improvements in Moulding Machines.
Year: 1891

page_text: Date of Application, 16th May, 1891
Complete Specification Left, 28th May, 189:-Accepted, 4th July, 1891
PROVISIONAL SPECIFICATION.
Improvements in Moulding Machines.
I, MAXIME DALIFOL, of 172 Quai de Jemmapes, Paris, France, Founder, do
hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in moulding machines as I will now more
particularly explain with reference to the accompanying drawings in which
Fig. 1 shews partly in central vertical section and partly in elevation; and
Fig. 2 in plan, a moulding machine according to this invention.
Fig. 3 illustrates in vertical section, apparatus for forcing water into the cylinder
of the hydraulic press; and
Fig. 4 illustrate, also in vertical section, the detail construction of a distributor
for the water to be forced or supplied under pressure and then exhausted.
Figs. 5, 6, 7 illustrates in vertical section, and Fig. 8 in horizontal section, to a
larger scale, the means employed for readily and accurately effecting the placing in
the sand, the pressing, and the withdrawing of the moulding frame.
In a strong case A of the framing of the machine, there is situated the press
cylinder A' in which moves the piston B. Upon the head of this piston bear in
succession rotary frames or carriers C, D, E, that register accurately with each
other as to position, and are each covered by a plate e which is the pattern plate or
bearing plate and rests on the central portion (adjustable as to height) of the frame.
To each of these frames there correspond upper frames F, two only of which can
be seen in Fig. 1, which are also capable of rotating, and serve as counter-moulding
plates, and registering accurately as to position, and bear against the hanging
block H suspended from the upper beam of the frame of the machine. This beam
is supported by columns (which may be of any suitable number, but three are shewn
in the drawing) which connect the beam with the lower framing. These columns
serve as journals or axes of rotation for the frames or carriers C, D, E, (hereinafter
called frames) and for their corresponding counter-pressure plates F. The frames
rotate by means of their bushes which are provided with rollers as shewn that
travel on a circular steel path located at the bottom of each column. The frames
might also be arranged to roll by means of rollers say three in number, in succession
on a rail track traversing the frame of the machine.
Each frame carries at one of its sides, a handle a connected to two rods or sliding
bars. The sand cope is hinged or jointed so that it can be turned down on
to the mould frame or box i hereinafter called a mould box.
When it is desired to make a mould, one of the frames, say C for instance is
turned into a position outside the cage formed by the columns T. Upon the
movable plate cof the frame is then placed a mould box i, in such a manner that
the lifting keys or wedges, which are arranged to slide in the angles or corners
of the frame C, bear against the underside of the mould box i at each of the angles
or corners thereof. These keys or wedges are each formed at its lower end with
an extension of less diameter than so as to form a shoulder at f'. These
extensions bear on tappets fixed at the bottom of guides y which work through
lugs m fixed to the frame C. Between these lugs and the tappets are springs h,
which are compressed when the guides y ascend, and allowed to expand when the
guides descend.
When the pattern or patterns to be moulded has or have been placed on the
plate c, and sand has been pressed into the mould box i, around the pattern or
patterns therein, the cope d is turned down, and a solid surface of sand is formed.
The frame C is then turned so as to bring it into a central position above the head
of the plunger B, the position being regulated by a set screw v. The corresponding

page_text: counter-pressure plate F, is then brought into a central position above the frame C
and below a fixed block H carried by the beam connecting the upper ends of the
columns T, the central position of the plate being ensured by a screw e'.
Water
under pressure is then admitted to the underside of the plunger B by means of a
distributore which is operated or controlled by one or other of the levers 1, 1, the
handles of which are within reach of the hand of the moulder. Water is
supplied under pressure to the distributor from any suitable source such as an
accumulator, or from a compressor such as shown in Fig. 3. This compressor is
constructed to give two successive pressures; firstly a pressure that acts quickly
and is of moderate degree, and which is produced by means of a plunger P and
flywheel V and secondly a pressure that acts more slowly and is of greater degree
than the first, this second pressure being produced by means of a plunger Pt and
flywheel V. The water enters the distributor through the inlet o in the direction
of the arrow, and passes into the upper chamber of the distributor e where its
further progress is arrested so long as the central distributing rod or plunger n
occupies the upper position indicated in Fig. 4. When the rod or plunger is in
this position the crossed passages which traverse it and which are shown in dotted
lines, have their orifices closed by the packings or divisions that separate the
chambers. In this position of the rod or plunger a the water within the press
cylinder A can escape through the distributor in the direction indicated by the
arrows 3, 4. If however the rod or plunger be lowered by one of the levers 1, 1,
the pressure water coming from the accumulator or from the hand-compressor, will
pass from the upper chamber into the intermediate one which is then separated
from the lower chamber and will flow in the direction of the arrow 2 into the
cylinder A to the underside of the plunger B. This plunger will consequently
rise, taking with it in its upward movement, the movable central portion of the
frame C, the plate e thereon, the mould box i, and its cope d, and will press the
whole against the counter-pressure plate F, which is made of such a form as to
penetrate the cope, and compress the sand therein to the desired tlegree to complete
the moulding operation.
"
In this upward movement of the movable central portion of the frame c, the
keys will pass from the lower position shown in Fig. 7, to the upper position
corresponding to final compression, shown in Fig. 6. They will then assume the
intermediate position shown in Fig. 5, where the mould box is shown separated
from the counter-pressure plate F, and from the plate c, and is in a position in
which it can be readily removed, as soon as the frame C has been turned to a
position outside the columns T.
The mould box i passes from the lower position Fig. 7, into the upper and inter-
mediate positions Figs. 6 and 5 respectively as follows:-The plunger B raises the
movable central part of the frame C and with it the bearing plate e; it also raises
the keys by means of the tappets p. As soon however as the shoulders of the
keys are raised above the rods b, these rods which have a constant tendency to
move in one direction by a spring will return, and bring their projections under
the shoulders of the keys in such a manner that these cannot again move down-
ward until after the said projections s and rods have been withdrawn by the
handle a.
The plunger B continuing to move upward, the whole system, movable
as to height, will also rise gradually as the compression of the sand takes place;
the keys will also rise until the maximum compression is reached, corresponding
with the position shown in Fig. 6. When this has taken place and the moulding
has been effected, one of the levers 7, is so operated as to enable the rod or
plungern of the distributor e to occupy a position in which the water in the press
cylinder A can exhaust in the direction of the arrows 3, 4. The plunger B will
then move down again, together with the several parts supported thereby. As
soon however as the shoulders of the keys come into contact with the projec-
tions of the rods b, the further downward movement of the keys will be arrested,
but the bearing plate c will continue to descend and thus become separated from
the mould box containing the sand in which the pattern or patterns is or are

page_text: embedded. The several parts thus pass from the relative positions shown in Fig.
to those shown in Fig. 5, and then after the frame has been turned outward from
between the columns T, the moulding box can be readily lifted off. When this has
been done the rods are drawn endways by the handle a so as to release
the keys which then fall into their lower positions. The several parts will
then be again in the relative positions shown in Fig. 7 but without the mould
box i.
When the frame C is turned outward it can be at once replaced by another
frame say D for example, the mould box i and the cope d of which will have been
previously prepared and placed in position. The above described operations are
then repeated as in the case of the frame C, after which similar operations can be.
repeated with the frame E and so on.
By means of the arrangements hereinbefore described the moulding operation
can be carried out in a very rapid, accurate and clean manner.
Dated this 16th day of May 1891.
MAXIME DALIFOL,
By L. W., per F. B.
COMPLETE SPECIFICATION.
Improvements in Moulding Machines.
1, MAXIME DALIFOL, of 172 Quai de Jemmapes, Paris, France, Founder, 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 moulding machines as I will now more
particularly explain with reference to the drawings filed with my Provisional
Specification and in which,
Fig. 1 shows partly in central vertical section and partly in elevation; and
Fig. 2 in plan, a moulding machine according to this invention.
Fig. 3 illustrates in vertical section apparatus for foreing water into the cylinder
of the hydraulic press.
Fig. 4 illustrates, also in vertical section, the detail construction of a distributor
for the water to be forced or supplied under pressure and then exhausted.
Figs. 5, 6, 7 illustrate in vertical section, and Fig. in horizontal section, to a
larger scale, the means employed for readily and accurately effecting the moulding
operation and for withdrawing the moulding frame.
This
In a strong case A carried by the framing of the machine, is situated the press
cylinder A in which moves the piston or plunger B. Upon the head of this
plunger can be brought to bear in succession rotary frames or carriers C, D, E,
that register accurately as to position and are cach covered by a plate c.
plate is the pattern or moulding plate and rests on the central portion (adjustable
as to height) of its corresponding frame or carrier. To each of these frames or
carriers there correspond an upper frame F, which is also capable of rotating, and
serves as a counter-moulding plate. These plates F, hereinafter called counter
pressure plates, can each be accurately held in a central position for use, and then
bear against a hanging block H suspended from the upper beam of the frame of
the machine. This beam is supported by rods or columns T (of which there may
be any suitable number, but three only of which are shown in the drawing) which
connect the beam with the lower framing. These columns serve as journals or axes
of rotation for the frames or carriers C, D, E (hereinafter called frames) and for
their corresponding counter pressure plates F. The frames rotate by means of
their bushes which are provided with rollers as shown that travel on a circular
sicel path located at the bottom of each column. The frames might also be
arranged to roll by means of rollers, say three in number, on a rail track traversing
the frame of the machine.

page_text: Each frame carries at one of its sides, a handle a connected to two rods or sliding
bars. The sand cope is hinged or jointed so that it can be turned down on to
the mould frame or box hereinafter called a mould box.
When it is desired to make a mould, one of the frames, say C for instance, is
turned into a position outside the cage formed by the columns T.
Upon the
moulding plate c of the frame is then placed a mould box, in such a manner that
the lifting keys or wedges which are arranged to slide in the angles or corners of
the frame C, bear against the underside of the mould box i at each of the angles or
corners thereof. These keys or wedges fare each formed at its lower end with an
extension of less diameter than so as to form a shoulder at f¹. These
extensions bear on tappets p fixed at the bottom of the guides g which work
through lugs m fixed to the frame C. Between these lugs and the tappets are
springs h, which are compressed when the guides y ascend, and are allowed to
expand when the guides descend.
When the pattern or patterns to be moulded has or have been placed on the
plate c, and sand has been pressed into the mould box i, around the pattern or
patterns therein, the cope d is turned down, and a full surface of sand is formed.
The frame C is then turned so as to bring it into a central position above the head
of the plunger B, the position being regulated by a set screw v. The corre-
sponding counter pressure plate F, is then brought into a central position above the
frame C and below the fixed block the central position of the plate being ensured
by a screw c¹. Water under pressure is then admitted to the underside of the
plunger B by means of a distributor e constructed with three chambers through
which passes a rod or plunger operated or controlled by one or other of the
levers, the handles of which are within reach of the hand of the moulder.
Water is supplied under pressure to the distributor from any suitable source such
as an accumulator, or from a compressor such as shown in Fig. 3. This compressor
is constructed to give two successive pressures, firstly a p.essure that acts quickly
and is of moderate degree, and which is produced by means of a plunger P and fly
wheel V and secondly a pressure that acts more slowly and is of greater degree
than the first, this second pressure being produced by means of a plunger P and
fly wheel V. The water enters the distributor through the inlet o in the direction
of the arrow 1, and passes into the upper chamber of the distributor e where its
further progress is arrested so long as the central distributing rod or plunger n
occupies the upper position indicated in Fig. 4. When the rod or plunger n is in
this position the crossed passages which traverse it and which are shown in dotted
lines, have their orifices closed by the packings or divisions that separate the
chambers. In this position of the rod or plunger n, the water within in the press
cylinder A can escape through the distributor in the direction indicated by the
arrows 3, 4. If however, the rod or plunger be lowered by one of the levers 11,
the pressure water coming from the accumulator or from the hand-compressor, will
pass from the upper chamber into the intermediate one, which is then separated
from the lower chamber, and will flow in the direction of the arrow 2, into the
cylinder A¹ to the underside of the plunger B. This plunger will consequently
rise, taking with it in its upward movement, the movable central portion of the
frame C, the plate e thereon, the mould box i, and its cope d, and will press the
whole against the counter pressure plate F, which is made of such a form as to
penetrate the cope, and compress the sand therein to the desired degree to complete
the moulding operation.
In this upward movement of the movable central portion of the frame C the
keys will pass from the lower position shown in Fig. 7, to the upper position
corresponding to final compression, shown in Fig. 6. They will then assume the
intermediate position shown in Fig. 5, where the mould box'i is shown separated
from the counter pressure plate F, and from the plate c and is in a position in which
it can be readily removed, as soon as the frame 'C has been turned to a position
outside the columns T..
The mould box i passes from the lower position, Fig. 7 into the upper and inter-

page_text: +
mediate positions Figs. 6 and 5 respectively as follows:-The plunger B raises the
movable central part of the frame and with it the bearing plate c; it also raises
the keys by means of the tappets p. As soon however as the shoulders of the
keys are raised above the rods b, these rods which have a constant tendency to
move in one direction by the action. of a spring will return, and bring their
projections & under the shoulders f¹ of the keys in such a manner that these cannot
again move downward until after the said projections s and rods have been with-
drawn by the handle a. The plunger B continuing to more upward, the whole
system, movable as to height, will also rise gradually as the compression of the
sand takes place; the keys will also rise until the maximum compression is
reached, corresponding with the position shown in Fig. 6. When this has taken
place and the moulding has been effected, one of the levers is so operated as to
enable the rod or plunger n of the distributor e to occupy the position in which the
water in the press cylinder A can exhaust in the direction of the arrows.3, 4. The
plunger B will then move down again, together with the several parts supported
thereby. As soon however as the shoulders f¹ of the keys come into contact
with the projection of the rods b, the further downward movement of the keys f
will be arrested, but the bearing plate will continue to descend and thus become
separated from the mould box containing the sand in which the pattern or
patterns is or are embedded. The several parts thus pass from the relative
positions shown in Fig. 6 to those shown in Fig. 5, and then after the frame has
been turned outward from between the columns T, the mould box can be readily
lifted off. When this has been done the rods are drawn endways by the handle a
so as to release the keys which then fall into their lowermost positions. The
several parts will then be again in the relative positions shown in Fig. 7 but
without the mould box i.
When the frame C. is turned outward it can be at once replaced by another
frame say D for example, the mould box and the cope d of which will have been
previously prepared and placed in position. The above described operations are
then repeated as in the case of the frame C, after which similar operations can be
repeated with the frame E and so on.
By means of the arrangements hereinbefore described, the moulding operation
can be carried out in a very rapid accurate and clean manner.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. In a moulding machine, the frames C D E and their corresponding counter
pressure plates F, arranged to rotate about the columns T and capable of replacing
one another as set forth, each of said counter pressure plates F when in position for
moulding being arranged to bear against a fixed block H suspended from the upper
beam, and each of the said frames when in position for moulding being arranged to
bear upon the head of a plunger with its central portion capable of moving
vertically, each of the said frames and the corresponding counter pressure plate
being then accurately superposed and held in a fixed central position, regulated by
the screws, substantially as hereinbefore described.
2. Constructing each of the frames referred to in the preceding claim, whether
these frames be arranged to rotate about the columns T, or to roll on rails
traversing the cage formed by the columns T, with the sliding rods having
projections, the guides a sliding in the lugs m, the tappets p, the springs h, and
the lifting keys having shoulders the whole combined and arranged for
effecting the packing or compression of the moulding sand, and the subsequent
separation of the mould box i from the moulding plate after the final compression
has been effected, substantially as hereinbefore described.
C
3. In a moulding machine, a distributor e constructed with three distinct super-
posed chambers, each provided with an orifice and traversed by a rod or plunger n
formed with crossed distributing passages, the arrangement being such that when

page_text: the said rod or plunger is lowered by a lever 1, it will effect communication by
means of its crossed passages, between the upper chamber to which water under
pressure is supplied, and the intermediate chamber which is in communication with
the interior of the press cylinder but is separated from the lower or exhaust
chamber, and when the said rod or plunger is raised, it will effect communication
between the intermediate chamber and lower chamber, and close the communication
between the upper and intermediate chambers, substantially as hereinbefore
described for the purpose specified.
4. In a moulding machine, the combination with the distributor e referred to in
the preceding claim, of the compressor constructed with two plungers P P of
different diameters to give two different pressures substantially as hereinbefore
described with reference to and shown in Fig. 3 of the drawings.
Datal this 30th day of May 1901
M. DALIFOL,
By L. W., per F. B.