Improvements in Machines for Making Moulds for use in Foundries and the like.
Year: 1890

page_text: Date of Application, 6th May, 1890
Complete Specification Left, 6th Mar., 1891-Accepted, 11th Apr., 1851
PROVISIONAL SPECIFICATION.
Improvements in Machines for Making Moulds for use in Foundries
and the like.
We, PHILIP UNWIN ASKIAM, Managing Director of Askham Brothers and
Wilson, Limited, of Yorkshire Steel Works, Sheffield, in the County of York, and
WILLIAM WILSON, Foreman, in the employ of the said Askham Brothers
and Wilson, Limited, do hereby declare the nature of this invention to be as
follows:-
This invention relates to machines suitable for use chiefly for producing a large
number of moulds from the same pattern for instance such as for producing corve
wheel moulds and the like.
According to this invention the pattern is withdrawn from the mould by
mechanical means and continuous moulding is effected by means of a turnover
table which carries the pattern to be moulded.
Inside the table which is hollow slide-bars or guides are arranged passing
longitudinally across the table and in the centre is a crank shaft fitted with a hand
wheel or other means for rotating it the throw of the said crank being fitted with a
slipper or block to slide between the bars or guides which carry the two halves of
the pattern and a tapping device is also provided for loosening the pattern in the
moulding material. Stops are provided for each side of the table to rest upon
alternately. When the machine is in use one side of the table being uppermost
one half of a moulding box is clamped to it the hand wheel is turned until the
crank is vertical and one half of the pattern fully projecting above the table; the
sand or moulding material is then rainmed in and then the table is turned over so
that the other face is brought uppermost then the tapping device is tapped lightly
so as to loosen the moulded half of the pattern in the box on the underside of the
table. The pattern is now ready to be drawn from the bottom box and by turning
the crank shaft the half pattern already moulded is withdrawn and the other half
is simultaneously brought by the same action into the position necessary for moulding
on the top of the table.
The second half of the moulding box is next clamped to this side of the table
and the moulding material is rammed in; the table is then turned over backwards
that the first half box comes uppermost and it is unclamped and removed;
another half box is placed on the table the pattern in the bottom half box is
withdrawn as before and the top half of the pattern is brought into position in the
top box the moulding material is rammed in and the table is again turned over.
The second half of the first box is now removed and being put upon the first
half forms a fully moulded box.
n
SM 1800
COMPLETE SPECIFICATION.
0 Improvements in Machines for Making Moulds for use in Foundries
and the like.
We, PHILIP UNWIN ASKHAM, Managing Director of Askham Brothers and
Wilson, Limited, of Yorkshire Works, Sheffield, in the County of York, and
WILLIAM WILSON, Foreman, in the employ of the said Askham Brothers
DQ.71

page_text: ana by the tonowing Statement 7
This invention relates to machines suitable for use chiefly for producing a large
number of moulds from the same pattern for instance such as for producing corve
wheel moulds and the like.
According to this invention the pattern is withdrawn from the mould by
mechanical incans and continuous moulding is effected by means of a turnover table
which carries the pattern to be moulded.
We will describe an apparatus constructed according to this invention with
reference to the accompanying drawing
Figure 1 being a longitudinal vertical section,
Figure 2 an end elevation and
Figure 3 a plan with the upper part of the pattern removed.
Inside the table A which is hollow, slide-bars or guides B are arranged passing
longitudinally across the table and in the centre is a crank shaft C fitted with a
hand wheel or other means for rotating it the throw of the crank of the said
shaft being fitted with a slipper or block B' to slide between the bars or guides B
which guides carry the two halves (D and D) of the pattern, and a tapping
device is also provided for loosening the pattern in the moulding material.
Stops E are provided for each side of the table to rest upon alternately. When
the machine is in use one side of the table being uppermost one half of a moulding
box (indiented at) is clamped to it the hand wheel'e is turned until the crank e³ is
vertical and the half D of the pattern fully projected above the table A; the sand
or moulding material is then rammed into the box fand then the table A. is turned
over on the centres or trunnions a a so that the other face is brought uppermost,
then the tapping device E is tapped lightly so as to loosen the moulded half of the
pattern in the box which is now on the underside of the table. The pattern is
now ready to be drawn from the bottom box and by turning the crank shaft C by
means of the hand wheel e the half pattern already moulded is withdrawn and the
other half_D³ is simultaneously brought by the same action into the position
necessary for moulding on the top of the table. The second half of the moulding
box () is next clamped to this side of the table and the moulding material is
rammed in; the table A is then turned over backwards so that the first half box
comes uppermost and it is unclamped and removed; another half box is placed on
the table, the pattern in the bottom half box is withdrawn as before and the top
half of the pattern is brought into position in the top box, the moulding material is
rammed in and the table is again turned over. The second half of the first box is
now removed and being put upon the first half forms a fully moulded box.
d are stops or supports for the pattern to prevent it from tipping while the sand
is being rammed into the mould boxes.
By the use of a moulding machine such as is hereinbefore described the parts of
the mould are of the same temper or have the same amount of moisture in the sand
of each instead of being of different temper or having a different degree of moisture
in each as is the case with the parts of moulds made in the ordinary way.
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. A mould making machine consisting of the combination of parts substantially
as hereinbefore described and shewn in the accompanying drawings.
2. In machines for mould making, a reversible table in which the parts of the
pattern are alternately moved to and fro substantially as and for the purposes
hereinbefore described.
3. In machines for mould making, a hollow table provided with a crank which
operates upon the opposite parts of a pattern so as to simultaneously withdraw

page_text: the one part of the pattern from the mould at the same time that it brings the
other part of the pattern into position for moulding substantially as hereinbefore
described.
J. H. JOHNSON & Co.,
Agents.