into Mould Boxes and Core Boxes.
Year: 1885

page_text: into Mould Boxes and Core Boxes.
I CARL SCHLICKEYSEN of 17 Wassergasse Berlin, Prussia, in the Empire of
Germany, Engineer, do hereby declare the nature of said invention for "METHOD
OF AND APPARATUS FOR CHARGING AND PRESSING THE MATERIAL INTO MOULD
BOXES AND CORE BOXES to be as follows:-
"
The charging or pressing of moulding material into the mould box by hand has
up till the present time only been imperfectly replaced by mechanical means
because in using the latter almost as much sand is thrown on to the pattern as is
required for the filling of the mould, whereby the comparatively lower and
unequally dense layers of sand corresponding to the shape of the pattern receive
quite different pressure according to their height, if the press plate does not form
the negative of the pattern so that a great pressure is exerted on the highest parts
of the pattern on the thin layers of sand which are there while a much less pressure
is exerted on thicker layers of sand in the lower parts of the pattern which results
in quite a different denseness of the moulding material in its cross section, often so
much so as to render the mould useless.
The present method and apparatus for filling the mould box with moulding
material fulfils its object while applying a uniform pressure all over the pattern.
For this purpose single or manifold helically arranged mixer arms are used which
rotate in or on the moulding material such mixer arms as used for instance for tile
or turf presses clay cutters and the like, which screw appliance spreads and presses
the material uniformly over the pattern, the sand being constantly supplied.
The machine consists of a material holder preferably cylindrical, in which rotates
a shaft which is provided with knives or arms of a suitable screw like form. The
holder rests on a frame within which is arranged an adjustable table, which can be
placed at any height.
It may for instance be fixed by means of teeth on the frame into which teeth
spring bolts on the table take. Under the mixer shaft and in the middle of the
table there is an adjustable plate which may when required be pushed up for
instance by means of a foot lever or in any other suitable manner.
The apparatus works as follows:-A mould box with the pattern and a board
for laying underneath the box is put on the adjustable plate in the table under
the sand holder and mixer shaft whereby the mould box (which may be wholly or

page_text: partly filled with moulding material) is pushed up against the flange or bottom of
the sand holder by means of a foot lever treadle. The mixer shaft is then set in
motion, and moulding sand is thrown in to the holder. After a few revolutions of
the mixer shaft the moulding box will be completely and properly filled, which will
be felt by the pressure on the foot lever. This latter is then released whereby the
adjustable plate in the table is lowered so that the box with the underneath it may
be pushed out and a fresh box pushed under the sand holder.
According to another modification the table may be fixed and the mixer may be
moved against it, or both may be arranged to move towards each other whereby
the adjustment mechanism would only have to be altered, but the mode of working
would remain the same.
If the mould box is longer and broader than the opening in the bottom of the
sand holder the box is moved from place to place under such bottom until pressure
has been applied all over the surfaces of the box. If the moulding is to be effected
in mould boxes which lie on the floor of the foundry, the sand holder provided with
the mixer shaft but without the frame is brought by any suitable means over the
pattern to be moulded, or if as before mentioned it is larger than the opening in
the bottom of the sand holder, the latter may be moved about over the pattern
until the desired uniform density of the moulding material is the result. In this
case it is requisite that a movable flange or foot plate situated round the bottom of
the apparatus should be pressed down by suitable mechanism every time before a
pressing operation so that the moulding sand cannot escape at the side of or above
the sand holder.
After the compression is completed the plates are again raised and the column of
sand is cut through by means of a piece of wire and the apparatus is moved to the
next place.
With such a moulding machine core boxes may also be filled and pressed.
Pressure may also be applied to the moulding material either vertically horizontally
or at an angle.

page_text: Method of and Apparatus for Charging and Pressing the Material
into Mould Boxes and Core Boxes.
I, CARL SCHLICKEYSEN of 17 Wassergasse, Berlin, Prussia, in the Empire of
Germany, Engineer do hereby declare the nature of this Invention and in what
manner the same is to be performed to be particularly described and ascertaining
in and by the following statement :-
The charging or pressing of moulding material into the mould box by band has
up till the present time only been imperfectly replaced by mechanical means because
in using the latter almost as much sand is thrown on to the pattern as is required
for the filling of the mould, whereby the comparatively lower and unequally dense
layers of sand corresponding to the shape of the pattern receive quite different
pressure according to their height, if the press plate does not form the negative of
the pattern so that a great pressure is exerted on the highest parts of the pattern
on the thin layers of sand which are there while a much less pressure is exerted
on thicker layers of sand in the lower parts of the pattern which results in quite
a different denseness of the moulding material in its cross section, often, so much
as to render the mould useless.
The present method and apparatus for filling the mould box with moulding
material fulfils its object while applying a uniform pressure all over the pattern.
For this purpose single or manifold helically arranged vanes or arms are used
which rotate in or on the moulding material such arms as used for instance for tile
or turf presses, clay cutters and the like, which screw appliance spreads and presses
the material uniformly over the pattern, the sand being constantly supplied.
For attaining this object I place over the pattern or patterns or mould box a
vessel by preference cylindrical which is supplied with moulding material and in
which rotates a screw with one or more threads or a spindle with helically arranged
knives. I may for instance use the known screw appliances used in brick or peat
presses pug mills or the like. By the rotation of such screw appliances the
moulding material which has to be replenished as it is used, is forced into the
mould box, spread over the pattern, and quite evenly pressed against it.
On the accompanying drawings are shewn examples of such moulding machines
with their essential parts. Figure 1 is a vertical section through a moulding
machine and Figure 2 a plan section through the lower or table part of same.
Figure 5 is a vertical section through another form of machine. Figure 6 is a
vertical section and Figure 7 an end view of another form of machine. Figure 3
is a vertical section through a machine adapted to moulding on the floor of the
foundry and Figure 4 a plan section of same.
The machine consists mainly-1-of a vessel E perfectly cylindrical into which
the moulding material is introduced, 2. of a shaft I which is provided with knives
or arms C of a suitable screw like form or arrangement and which spindle rotates
in the aforesaid vessel E and in the moulding material or above the latter, 3 of
an adjustable table F which by means of screw, toothrack or lever appliances or

page_text: equivalent mechanism can be placed at any height. It may for instance as shewn
in Figures 1 and 2 be fixed by means of teeth M on the machine frame M into
which teeth spring bolts N on the table take. Or as shewn in Figure 5 I may
raise the table by means of a screw.
Or as shewn in Figures 6 and 7 I may use
tooth racks and pinions.
Under the mixer shaft I and in the middle of the table there is an adjustable
plate F which may when required be pushed up for instance by means of a foot
lever O or in any other suitable manner.
The apparatus works as follows:-
A mould box B with the pattern A or patterns and a board G for laying
underneath the box is put on the adjustable plate F in the table H under the sand
vessel or holder E and screw shaft I, whereby the mould box (which may first have
been wholly or partly filled with loose moulding material) is pushed up hard against
the flange or bottom E¹ of the sand holder E by means of the foot lever or
treadle Ŏ. The screw shaft I is then set in motion (for instance by means of worm
and wormwheel gear as shewn) and moulding sand is thrown into the holder.
After a few revolutions of the screw shaft and if required by throwing in additional
moulding sand upon and instead of the sand which has been forced down the
moulding box will be completely and properly filled, which will be felt by the
pressure on the foot lever This latter is then released whereby the board Ġ and
adjustable plate F in the table are lowered and the column of sand if required cut
through by means of a wire between the vessel E and mould box B so that the
box with the board G underneath it may be pushed out and a fresh box pushed
under the sand holder E. The lower half of the mould box is of course first put
into the apparatus upside down, the same then turned and the upper half of the
box placed on it whereupon this is pressed.
According to another modification the table F may be fixed and the pressing
screw may be moved against it or both may be arranged to move towards each
other whereby the adjustment mechanism would only have to be altered, but the
mode of working would remain the same.
If the mould box is larger than the opening in the bottom of the sand holder E
the mould box B is moved from place to place under such bottom until pressure has
been applied all over the surface of the box.
If the moulding is to be effected in mould boxes which lie on the floor of the
foundry or on a board which cannot be brought to the vessel E this sand holder E
Figures 3 and 4 provided with the screw shaft I but without the framing M is
by any suitable means brought over the pattern to be moulded or if as before
mentioned it is larger than the opening in the bottom of the sand holder, the latter
may be moved about over the pattern until the desired uniform density of the
moulding material is the result. In this case it is requisite that a movable flange
or foot plate E" (instead of a fixed flange) situated round the bottom of the
apparatus should be pressed down by suitable mechanism for instance by lever gear
as shewn, every time before a pressing operation so that the moulding sand cannot
escape at the side of or above the said holder E. After the compression is
completed the flange or plate E" is again raised and the column of sand is cut
through by means of a piece of wire and the apparatus is moved to the next
place.
In like manner as here described I proceed when the moulding is to be performed
on a fixed table either when the same as in Figure 5 is connected with the vessel E
by means of a framing H or when separate therefrom.
With such a molding machine core boxes may also be filled and pressed.
The core boxes are then as described with reference to the mould boxes placed
empty or charged partly or wholly with loose core material under the screw
apparatus filled with core material and by the rotation of the pressing screw the
required core material is forced into the core box and pressed into a firm core.
Pressure may also be applied to the molding or core material either vertically
horizontally or at an angle or from below in an upward direction.

page_text: Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what.
I claim as my invention is
First. The mode substantially as described of filling and compressing moulding
material into an empty mould box or one partially or wholly but loosely filled with
moulding material, by means of a pugmill screw or other suitable screw or worm
appliance, for the purpose of obtaining even density in the layers or material
surrounding the pattern.
Second. A moulding machine consisting essentially of a vessel in which rotates
a shaft provided with knives or vanes formed or arranged in screw or worm fashion
for instance like a pugmill screw and of a press plate the said screw appliance and
press being made movable towards each other or one of them against the other for
the purpose of inserting a mould box between them whereupon the screw or worm
appliance is put into rotation whereby the moulding material is pressed against the
pattern.
Third. A moulding machine consisting essentially of a vessel and screw appliance
such as hereinbefore secondly claimed and of a pressing plate E" Figure 3 which
is movable in the direction of the out pressure for the purpose of pressing the said
plate down upon the mould box below it whereupon the screw or worm appliance
is put into rotation and the moulding material thereby pressed against the
pattern.
Fourth. The combination of parts forming the moulding machines described
with reference to the accompanying drawings.
Fifth. The application of the method firstly claimed and the machines secondly,
thirdly and fourthly claimed for pressing core boxes full of core material.
Dated this 23rd day of January 1886