IMPROVEMENTS IN MEANS EMPLOYED IN THE MANUFACTURE OF MOULDS USED IN CASTING PROVISIONAL SPECIFICATION
Year: 1882

page_text: LETTERS PATENT to James Chambers of the Stanton Iron Works near
Nottingham in the County of Derby Foundry Manager and Frederick
Chambers Foreman at the said Works for an Invention of IMPROVEMENTS
IN MEANS EMPLOYED IN THE MANUFACTURE OF MOULDS USED IN CASTING
PROVISIONAL SPECIFICATION left by the said James Chambers and
Frederick Chambers at the Office of the Commissioners of Patents on the
80th November 1882.
JAMES CHAMBERS of the Stanton Iron Works near Nottingham in the County of
Derby Foundry Manager and FREDERICK CHAMBERS Foreman at the said Works
"IMPROVEMENTS IN MEANS EMPLOYED IN THE MANUFACTURE OF MOULDS USED
IN CASTING PIPES AND CYLINDERS
In the production of moulds for giving external form to pipes and cylinders it is
customary to ram in the moulding sand into the boxes onto the pattern progressively
by hand, which is an operation occupying considerable time besides involving too
often uncertainty in the operation.
The object of the invention is to remedy these evils and in carrying out our
improvements, the box may be of the ordinary character but the pattern for giving
form to the internal cylindrical portion of the mould, in place of being formed to
the whole length of the pipe or cylinder to be produced may be formed simply to
the extent of a portion of that length and it is applied so as to be drawn through
the moulding sand placed in the box and this drawing through the moulding sand
of this portion of pattern is effected by a stem of comparatively small diameter
formed or attached thereto at one end and acted upon by a crane or other suitable
drawing means. In the case of forming moulds for "socket" pipes or for other
enlargements at one end thereof, a separate pattern piece for giving form to that
part is applied, and in such, and other cases we still adopt the hand ramming
process for a small portion of the length of the mould and then the remainder of
the internal form of the mould is obtained by simply drawing the short pattern
through the length of the moulding sand and to facilitate this operation the upper
portion of the pattern at its junction with its stem is formed conical
By these means the compression of the moulding sand is effected by the outward
pressure on it of the short pattern in the act of its being drawn through such sand.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said James Chambers and Frederick Chambers in the Great Seal
Patent Office on the 26th May 1883.
JAMES CHAMBERS of the Stanton Iron Works near Nottingham in the County of
Derby Foundry Manager and FREDERICK CHAMBERS Foreman at the said Works
"IMPROVEMENTS IN MEANS EMPLOYED IN THE MANUFACTURE OF MOULDS USED
IN CASTING PIPES AND CYLINDERS
»
In the production of moulds for giving external form to pipes and cylinders it is
customary to ram in the moulding sand into the boxes onto the pattern pro-
gressively by hand which is an operation occupying considerable time besides
involving too often uncertainty in the operation.
تند
The object of the invention is to remedy these evils and in carrying out our
improvements the box may be of the ordinary character but the pattern for giving
form to the internal cylindrical portion of the mould in place of being formed to
the whole length of the pipe or cylinder to be produced may be formed simply to
the extent of a portion of that length and it is applied so as to be drawn through
the moulding sand placed in the box, and this drawing through the moulding sand
of this portion of pattern is effected by a stem of comparatively small diameter
formed or attached thereto at one end and acted upon by a crane or other suitable
drawing means. In the case of forming moulds for "socket" pipes or for other
enlargements at one end thereof, a separate pattern piece for giving form-to that
part is applied and in such and other cases we still adopt the hand ramming
process for a small portion of the length of the mould and then the remainder of
the internal form of the mould is obtained by simply drawing the short pattern
through the length of the moulding sand and to facilitate this operation the upper.
portion of the pattern at its junction with its stem is formed conical.
By these means the compression of the moulding sand is effected by the outward
pressure on it of the short pattern in the act of its being drawn through such sand.
Having thus described the nature of the said invention I will proceed by the
aid of the accompanying drawings to explain more in detail means employed by us
in carrying the same into effect.
Figure 1 shews a vertical section of a moulding box with the rammer therein.
Figure 2 shews a transverse section of the moulding box at the point where the
rammer is connected to the stem, the stem being removed.
Figure 3 shews a plan of the moulding box the stem being supported by a
guiding bracket having two legs but other number of legs would be employed as
required for larger sized pipes. Figure 4 shews a similar view of the top of a
moulding box with a guiding bracket having three legs and provided with
adjusting screws for adjusting the stem centrically within the moulding box.
The lower end of the moulding box in Figure 1 is shewn provided with a
ramming plate adapted for ramming pipes socket upwards or for columns or
cylinders. Figure 5 shews the same part of the moulding box with a ramming
plate having a pattern attached adapted to give a socket' form to the end of the
pipe which would thus be moulded socket downwards.
In each of the Figures like letters indicate like parts throughout the drawings.
a is the moulding box 6 the ramming plate for forming spigot ends of pipes, ends
of columns and cylinders is the bottom plate of the moulding box for supporting

page_text: by suitable ordinary catches not shewn, the plates b, b* shows a ramming plate
(Figure 5) adapted to give by means of the socket pattern formed on it corre-
sponding form to the lower end of the pipe to be formed.
d is a guide bracket having two legs which support and guide the stem e of the
rammer f¹ and pipe pattern.f.
d¹ d' are catches for securing the legs of this bracket & to the top of the box a.
fis the conically shaped upper portion of the pipe pattern f such coned portion
forms the rammer of the moulding sand as it is drawn upwards by means of the
stem e being lifted by a crane or otherwise connected to the loop e¹.
fare lugs formed on or attached to the rammer f¹ adapted to be connected by
pins f to eye bolts e connected to the flanged ond e³ of the stem e by screw
nuts or the stem e and rammer fl may be formed in one piece or be otherwise
connected g is a hood or conical cover for the parts forming the junction of the
stem and rammer.
In Figure 4 h h h are adjusting screws working in corresponding screwed
sockets in the tripod bracket d such screws having end pieces h¹ adapted to
bear against the stem e and retain it centrally in position whilst yet admitting of
its endway traverse.
In operation, the lower end of a socket or such like enlarged ended pipe or the
lower end of a pipe or cylinder is formed by hand ramming on the pattern piece
selected and for a small portion of the length of the mould and the remainder of
the internal form of the mould is obtained by simply drawing the short pattern f
through the length of the moulding sand, within the moulding box a, the conical
form of the upper part of the former or rammer facilitating this operation and
compressing outwards the moulding sand it displaces in its passage as it is drawn
up by the stem e.
Having thus described our invention and means adapted for carrying the same
into practical effect we would have it understood that what we claim is the com-
bination or arrangement of parts forming means employed in the inanufacture of
moulds used in casting pipes and cylinders whereby the forms to the internal
cylindrical portions of such moulds are given by short or comparatively short
patterns drawn progressively through the moulding sand in the mould boxes by
means of stems of comparatively small diameters formed or attached thereto
substantially as herein described and shewn in the accompanying drawings.
In witness whereof we the said James Chambers and Frederick Chambers
have hereunto set our hands and seals this twenty third day of Mny
in the year of our Lord One thousand eight hundred and eighty three.