Year: 1887

page_text: Date of Application, 28th July, 1887
Complete Left, 28th Apr., 1888
Complete Accepted, 1st June, 1888
I GEORGE HOLDSWORTH of 117 Acre Lane, Oldham in the County of Lancaster,
Engineer do hereby declare the nature of this invention to be as follows:-
My invention relates to moulding machines for moulding cylinders and pipes and
is more particularly intended for moulding cylinders, doffers and rollers for carding
engines and similar machines, but is applicable to other cylinders and pipes generally
and consists in an improved arrangement or construction of machine for this purpose.
My improved machine consists of a circular moulding table upon which the moulding
box and pattern are placed centrally with the table, which can be rotated by gearing
from the driving shaft of the machine. The table is supported on a bedplate and
surmounted by an open frame, on which a carriage containing the rammers can travel.
This carriage supports on columns or their equivalent a top plate from which a slide,
hereinafter called the rammer slide, guided by the columns or their equivalent, is
suspended by one or more screws. The rammer slide carries a cross shaft with cams
for actuating the rammers and driven from the driving shaft of the machine by means
of an upright shaft on the frame driving through a pair
of spur wheels another upright
on the carriage, from which the motion is transmitted to the cam shaft by bevil wheels
so arranged that the rammer slide can be moved up or down without interfering with
the driving of the camshaft. The rammers are attached to slides working vertically
in suitable guides and are by preference made to drop or ram the sand by weight or
spring pressure, or springs are inserted below the cams in the rammer holders so as
to make the pressure on the sand elastic. By preference I use four rammers, two on
each side, one of which serves to ram the sand between the moulding box and the
pattern and the other to ram the sand between the pattern and the internal core
barrel. The sand is fed into the moulding box by an elevator arranged at the side
of the machine, which conveys the sand from a receptacle on the floor into a box or
hopper whence it is discharged by spouts into the moulding box.
By means of the screws holding the rammer slide suspended, the rammers can
be lowered more or less so as to act efficiently upon the sand and ram it round the

page_text: pattern inside and outside, while the table with the moulding box continues to rotate.
The said screws are connected to the cam shaft by gearing provided with arrange-
ment for throwing them into and out of gear, so that during the ramming and rotation
of the moulding box on the table, the ramming slide is raised continuously as the
mould becomes gradually filled. The pattern which is ordinarily about twenty inches
long, is attached to the rammer slide by hooks and wires or their equivalent so arranged
that they begin to draw the pattern when about eighteen inches of sand have been
rammed in, while the rammers continue to ram the sand in and in this way cylinders
of any length within the compass of the machine can be moulded. When the box is
filled, the pattern can be finally withdrawn by means of the rammer slide.
A second table may be arranged next to the first one with the framing supporting
the carriage extending over both and when one mould has been rammed and the
pattern drawn, the carriage can be run over the second table and there employed to
ram a second mould while the first one is finished and removed. Each table is
provided in this case with separate driving pulleys gearing and upright shaft for
transmitting the motion to the vertical shaft on the carriage, the spurwheels driving
the upright shaft on the carriage from the upright on the frame being so arranged
that they can be drawn out of and put into gear by moving the carriage from its
position over one table to that over the other. The gearing may be arranged in any
other suitable manner for driving the upright shaft on the carriage from either upright
shaft on the frame.

page_text: I GEORGE HOLDSWORTH of 117 Acre Lane, Oldham, in the County of Lancaster
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 :-
My invention relates to moulding machines for moulding cylinders and pipes, and
consists in an improved arrangement or construction of machine for this purpose, my
improved machine being more particularly intended for moulding cylinders doffers
and rollers for carding engines, but also applicable for moulding other cylinders and
pipes generally.
On the two sheets of drawings appended hereunto
Fig. 1 shows an elevation of my improved machine.
Fig. 2 details of the mechanism for actuating the rammers on an enlarged scale.
Fig. 3 a plan of the machine in section along line A. B. C. D. of fig. 1.
Fig. 4 a sectional side view of the gearing for driving the bevil wheel r herein after
described along shafts m² and s on fig. 3.
My improved machine consists of a circular moulding table a upon which the
moulding box b corebox 6' and pattern c are placed centrally with the table, the box
being attached by bolts 63 63 to the table a. The latter has formed on or attached to
4
it the spurwheel a' which is driven through the spur pinion a² and mitre wheels a³ a¹
from the driving shaft a fitted with fast and loose pulleys a6 a7. By these or equivalent
means the table is rotated during the ramming in of the sand round a centre pivot or
its equivalent. The table is supported on a bed 62 and surmounted by girders d sup-
ported on columns d' and stayed together. The girders d are fitted with rails d² or
their equivalent on which a carriage e can travel on wheels el. On this carriage four
screws ffff are mounted connected or stayed at their top by a plate f¹. Upon each
screw a nut f2 is placed, capable of rotating in the plate herein after called slide,
g
and supporting said slide upon nuts f³f screwed upon the outside of the nuts f2.
The nuts are driven by mitre wheels g¹ g² from the shafts h h³ ³ h* connected with
each other by mitre wheels i i¹ as shewn on the drawings (see fig. 3). The shaft /¹
receives its motion from the driving shaft a through the mitre wheels a³ a', the latter
of which is fixed upon the upright side shaft k which is supported by brackets k¹ k²
attached to the framing of the machine. The shaft k carries at the top a spurwheel k³
which drives the wheel on the vertical shaft / revolving in bearings 12 13 attached to
the carriage. The bevil wheel can revolve in the bearing 15 and slide on the shaft,
being driven by a key sliding in a groove in the shaft. The bevil wheel drives
another on the shaft m'. The shaft is driven from the shaft m¹ through the
pinion n, wheel n' and mitre wheels n² n³, and in this way the shafts h h h h are
rotated and the nuts on the screws f turned simultaneously, whereby the slide g
is moved upward parallel to the moulding table and carriage. By sliding the pinion
on the shaft m' out of gear with n¹ and sliding the pinion n³ into gear with the carrier
n

page_text: wheel driven by wheel on shaft m', the motion of the shaft will be reversed
and the slide g lowered at an increased speed. The details of the arrangements for
raising and lowering the slide g may be varied and I do not confine myself to those
shewn on the drawings and herein before described.
The shaft m drives through the mitre wheels p²² 3 other shafts m² m³ m
running in pedestals on the top of slide g. These shafts actuate the rammers by means
of excentrics and slides as shewn in detail on fig. 2. On each shaft an excentric o is
fixed working between the bars o¹ o connected by bolts o³ o and sliding on pillars o³ o
fixed upon the slide g. The pillars may be so arranged that they can be fixed at
different distances from the centre to suit different diameters of cylinders or pipes to
be moulded, slots being provided in slide g for the rammers to work through. To each
bar I attach by preference two rammers q¹ 72; one for ramming the mould outside
the pattern and the other for ramming the core inside the pattern, which are worked
up and down by the excentric o. Instead of four pairs of rammers a greater or less
number may be used according to the diameter of the articles moulded. Cams friction
pulloys or equivalent means may be employed instead of excentrics, for raising the
rammer carriers and the rammers allowed to drop by their own weight which may be
assisted by springs, or springs may be inserted below the excentrics o between the
bars o² and the rammer holders to render the pressure on the sand elastic.
The
arrangement for driving the excentrics cams or their equivalent may be varied from
that shewn being in all cases so arranged that the upward or downward movement of
the slide g does not interfere with it.
The action of the machine is as follows:-
The moulding box band corebox ¹ having been fixed and the pattern c placed into
position, the table a is rotated while sand is continuously filled into the mould, which
can be done conveniently by means of a hopper into which the sand is raised from the
foundry floor by means of an elevator driven from the line shafting or the moulding
machine shaft a. By means of the gearing actuating the nuts 2 on screws f, the
slide g can be lowered as required so that the rammers q¹²act efficiently upon the
sand. This gearing is then reversed so that the slide gradually ascends while
the moulding table rotates and the mould becomes filled, the rammers rising with
the slide g.
For short cylinders and pipes the pattern c may be made of the full depth of
the moulding box, and when the latter has been filled to the top, the slide g may be
lowered again and the pattern attached to it by hooks or their equivalent, when it will
be drawn out of the sand by raising plate g, arrangements being made in this case to
throw the pinion a² actuating the table a out of gear with the wheel a'.
For long cylinders and pipes the pattern, which is ordinarily made about 20 inches
long, is attached to the slide g by hooks or links c¹ c² so arranged that they begin to
draw the pattern when about 18 inches of sand have been rammed in, while the
rammers continue to work and in this way cylinders or pipes of any length within the
compass of the machine can be moulded. For this purpose it is necessary that the
connection between the links or hooks to slide g should be so arranged, that said links
or hooks can travel round with the moulding box and pattern. This may be done by
means of the arrangement shewn on figs. 3 and 4. The rods or links e' c² are attached
to a large bevil wheel which is supported by rings fixed to the slide g so that
the bevil wheel can turn on the rings. This bevil-wheel is driven by a bevil pinion s'
fixed upon the angular shaft s revolving in pedestals 23 fixed on the top of slide g.
The shaft s is driven from the shaft m or any other of the shafts m¹ m² m³ by means
of a bevil pinion t driving a bevil wheel t¹ on a stud 2 and a second bevil pinion t³
driving a bevil wheel s on shaft s. The wheels are so proportioned that the bevil
wheel rotates at the same angular speed as the moulding table a. When the mould
has been completed, the pattern is drawn out of the sand by means of the slide g.
By preference I use a second moulding table arranged at the side of the first as
shewn on the drawings, provided with independent gearing and side shaft k, and
extend the framing or beams d over both tables. When the mould has been rammed
on one table and the pattern drawn, the carriage e can. be run over the second table..

page_text: and there employed to ram a second mould while the first one is finished and removed.
Each side shaft k carries a spurwheel k³ with which the pinion on the upright shaft /
can be put into gear and drawn out of gear by the movement of the carriage from its
position over one table to that over the other. Suitable stops not shewn on the
drawings are provided to determine the movement of the carriage and catches or their
equivalent provided to hold it so that the wheel carrying the pattern is concentric
with the moulding table. Where only one moulding table a is used, the plate e
carrying the upper part of the machine can be fixed to the columns d instead of being
mounted on wheels.
Instead of rotating the table a the table and moulding box may be kept stationary
and a plate carrying the rammers and mechanism for actuating the same rotated.
The gearing may be arranged in any other manner than shewn on the drawings for
effecting the same movements, and instead of screws for raising and lowering the slide,
racks or chain pulleys or equivalent means may be employed.
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 :-
Firstly, in moulding machines for cylinders and pipes the arrangement of a slide or
plate carrying rammers and mechanism for actuating the same raised selfactingly as
the mould gets filled, substantially as described.
Secondly, the combination of a slide arranged as specified in the preceeding claim
with a rotating moulding table, substantially as described.
Thirdly, mounting a slide arranged as specified in the first claim upon a carriage
travelling upon girders or their equivalent above two moulding tables placed side by
side, substantially as described.
Fourthly, arranging the gearing for raising the slide and actuating the rammers so
that it can be driven from either of two moulding tables and is put into and out of gear
by the movement of the carriage.
Fifthly, the general arrangement of moulding machine for cylinders and pipes,
substantially as described and illustrated by the drawings.
T
ديمو
1
$11000
EMMOTT & Co.,
Agents for the Applicant.