Improvements in Apparatus for Moulding Pipes, Columns, and Cylinders.
Year: 1887

page_text: Date of Application, 11th May, 1887.
Complete Left, 24th Aug, 1887.
Complete Accepted, 27th Sept., 1887.
1
Improvements in Apparatus for Moulding Pipes, Columns, and
Cylinders.
I JAMES BARKER of Atlas Works Warrington in the County of Lancaster
Engineer do hereby declare the nature of said Invention for IMPROVEMENTS IN
APPARATUS FOR MOULDING PIPES COLUMNS AND CYLINDERS, to be as follows :-
In constructing an apparatus for moulding pipes etcetera embodying my
Improvements I employ a bed or frame preferably of metal and of suitable size for
the castings required. The pattern for the pipe column or cylinder to be cast is also
preferably made of metal and in one piece with the core print. When the pipe or
other article is to be formed with flanges the flanges extend about half way round the
pattern. The core print rests at each end on antifriction rollers and the surface of the
core print near each end is semi-circular and semi eliptical.
When the pattern is in the proper position and the moulding box has been put on
and filled with sand the ends of the core print rest with their semi-circular surfaces
upon the antifriction rollers but when the moulding box has been rammed the
pattern is turned half round thus bringing the semi-eliptical surfaces of the core
print on to the rollers whereby the pattern as it is turned on its axis gradually and
gently leaves the sand in the mould and as it leaves it smoothes the surface of the
sand.
The other half of the mould is formed in a similar manner to the first and the
pipes cast from the united mould in the ordinary manner.
In order to make one bed answer for pipes etcetera of different sizes I propose to
employ filling up pieces.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Moulding, Pipes, Columns and
Cylinders.
I JAMES BARKER of Atlas Works Warrington in the County of Lancaster
Engineer, do hereby declare the nature of said Invention for IMPROVEMENTS IN
APPARATUS FOR MOULDING PIPES COLUMNS AND CYLINDERS, and in what manner
the same is to be performed, to be particularly described and ascertained in and by the
following statement :-
In constructing an apparatus for moulding pipes etcetera embodying my
Improvements I employ a bed or frame preferably of metal and of suitable size for the
castings required. The pattern for the pipe column or cylinder to be cast is also
preferably made of metal and in one piece with the core print. When the pipe or
other article is to be formed with flanges the flanges extend about half way round the
pattern. The core print rests at each end on antifriction rollers and the surface of the
core print near each end is semi-circular and semi-eliptical.
When the pattern is in the proper position and the moulding box has been put on
and filled with sand the ends of the core print rest with their semi circular surfaces
upon the antifriction rollers but when the moulding box has been rammed the
pattern is turned half round thus bringing the semi-eliptical surfaces of the core
print on to the rollers whereby the pattern as it is turned on its axis gradually and
gently leaves the sand in the mould and as it leaves it smoothes the surface of the
sand.
The other half of the mould is formed in a similar manner to the first and the
pipes cast from the united mould in the ordinary manner.
In order to make one bed answer for pipes etcetera of different sizes I propose to
employ filling up pieces.
And in order that my Invention may be fully understood and readily carried into
effect I will describe the accompanying three Sheets of Drawings reference being had
to the figures and letters marked thereon.
Figure 1 is a plan Figs. 2 and 3 side elevations and Figs. 4 and 5 end elevations
of an apparatus for moulding pipes etcetera constructed according to my Invention
the moulding box being removed in Figure 1 and shown in dotted lines only in the
remaining Figures.
Figs. 6, 7 and 8 are a plan a side elevation and an end view respectively of the
bed or frame and Figs. 9 and 10 are a side and an end elevation respectively of the
pattern and core print.
Figs. 11, 12, 13, 14 and 15 are similar views respectively to Figs. 1, 2, 3, 4 and 5
of a slightly modified construction of my improving moulding apparatus.
Similar letters refer to similar parts throughout the several views.
Referring first to the apparatus illustrated by Figs. 1 to 5 and the detail views
Figs. 6 to 10.. - a designates the bed or frame and 6 the pattern and
core print in this case shown made together in one piece and with the
pattern provided with flanges 6' extending preferably rather more than
half round its circumference recesses a³ and a respectively are formed in

page_text: the bed a to receive the flanges b¹ of the pattern b see Fig. 6. The pattern rests at
each end on two antifriction rollers c pivoted to the frame a and the surface of the
pattern where it bears upon the antifriction rollers near each end is semicircular b
and semi-eliptical 63 as shown best in Figs. 4, 5 and 10. The pattern may be turned
on the rollers by means of a lever inserted into a hole 6 or by any suitable
contrivance. The moulding box d indicated by dotted lines Figs. 2 to 5 is placed
upon the frame a which is provided with projecting corner pieces or lugs a³ which
serve as guides for it.
The apparatus illustrated by Figs. 11 to 15 is similar in all respects to that above
described except that the ends of the pattern e instead of being semicircular and
semi-eliptical are circular where they rest on the rollers the centre being struck from
below that of the pattern as seen in Fig. 14 where the pattern is raised.
When the pattern is in the proper position for moulding i.e. with the flanges b¹
or e¹ raised as shown in Figs. 2 and 4 and 12 and 14 respectively the moulding box d
is put on the frame a and filled with sand the sand being rammed in the usual
manner. The pattern is then turned slowly round by means of the lever in one of
the holes 6 and as the pattern is turned it smoothes the sand in the box and is
gradually caused to fall as the semi-eliptical surfaces 6 or the circular surface
comes on the rollers c. The pattern in the former instance leaves the sand rather
abruptly and in the latter instance very gradually. When the pattern has been turned
half round on its axis the first half of the mould is complete.
The moulding box can then be removed and the pattern turned to raise the flanges
ready for the next moulding box when the operation is repeated.
The core is then placed in one box or mould and the other box is placed in its
position on the first when the moulding operation can be completed in the customary
manner.
The impression obtained from the pattern by my improved moulding apparatus is
very perfect and by it the labour of trimming and dressing the edges of the sand in
the mould is obviated and better and more castings are produced.
My improvements are applicable for moulding flanged or plain pipes columns and
cylinders.
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 is :-
1. The use and application of bearing surfaces substantially as herein described and
as shown for the ends of the pattern in a moulding apparatus for the purpose
of gradually withdrawing the pattern from the sand in the moulding box as
specified.
2. The combination with the pattern of the semi-circular bearing surfaces 63 and
the semi-eliptical bearing surfaces 63 and the combination with the pattern e of the
bearing surfaces e and es substantially as and for the purposes herein described and
as illustrated by the Drawings annexed.
3. The construction combination and arrangement of parts embodying my
improvements in apparatus for moulding pipes columns and cylinders substantially
as and for the purposes herein described and as illustrated by the Drawings
annexed.
H. B. BARLOW,
17, St. Ann's Square, Manchester,
Agent for Applicant.