IMPROVEMENTS IN APPARATUS EMPLOYED IN CASTING METAL PIDES OR TURES
Year: 1879

page_text: LETTERS PATENT to Cecil Brooke Palmer, Gentleman, Rookes Evelyn Bell
Crompton, Engineer, and James Chambers, Foundry Manager, all of the
Stanton Iron Works, near Nottingham, in the County of Derby, for the
Invention of "IMPROVEMENTS IN APPARATUS EMPLOYED IN CASTING METAL
PIDES OR TURES"
Sealed the 7th May 1880, and dated the 12th November 1879.
PROVISIONAL SPECIFICATION left by the said Cecil Brooke Palmer,
Rookes Evelyn Bell Crompton, and James Chambers at the Office of the
Commissioners of Patents on the 12th November 1879.
CECIL BROOKE PALMER, Gentleman, ROOKES EVELYN BELL CROMPTON, Engineer,
and JAMES CHAMBERS, Foundry Manager, all of the Stanton Iron Works, near
Nottingham, in the County of Derby. "IMPROVEMENTS IN APPARATUS EMPLOYED
IN CASTING METAL PIPES OR TUBES."
For the casting of metal pipes or tubes with the core ends downwards the core
mould for giving form to the interior of the sockets is formed on the exterior of a
ring or short tube, herein after called the "socket ring," the lower end of which is
supported temporarily for that purpose in the bed plate of the moulding apparatus.
The interior of this socket ring is formed conical for the purpose of receiving, and
thereby steadying, the end of that portion of the core for the body of the pipe or
tube hereinafter called the "core tube," whilst the outer service of this socket ring
can only be very slightly conical. The consequences of this arrangement are that
so thin a coating of core mould is admitted on the outside of this socket ring as to
be often injured by the pouring in of the metal, and defective castings result,
whilst the pipe or tube is otherwise injured by the fluid metal coming in contact
with, and being chilled by the edge of the metal socket ring referred to, and also
when the desired casting of the pipe or tube has been completed this metal socket
ring is often lifted with the pipe or tube, and it requires considerable labour,
involving loss of time, to remove it.
According to our improvements the socket ring on which that portion of the core
for the interior of the socket is produced, may form part of the bed plate of the
moulding apparatus.

page_text: The end of the core tube on which the core mould is formed for the cylindrical
portion or body of the pipe is accurately faced true and square to its axis, and
rests on a similarly faced end of the aforesaid socket ring; the accurate centreing
of these two parts, viz., the core tube and socket ring, is insured by a central
spindle on the former passing into a socket on the latter, or vice versa, as may be
convenient.
By these means the following advantages are secured :-The core tube and socket
ring are far more accurately brought into true and lineable position, as the surfaces
coated with core mould cannot be brought into rubbing contact when the parts of
the complete core. are being brought into position, there is no risk of the core
mould being displaced or injured by such operation.
Again, increased space for core mould is admitted on the exterior of the socket
ring.
Again, no portion of the metallic surfaces of either socket ring or core tube
being exposed or left bare of core mould, the direct impact of the molten metal
on such metallic surface, and chilling action consequent thereon, is prevented.
The cone or taper of the outer surface of the socket ring being much greater than
heretofore, increased facility is afforded for freeing it from the interior of the socket
core after the casting of the pipe has been completed.
Again, the fewer and simpler parts of the improved arrangement are economical
and cheap to manufacture.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Cecil Brooke Palmer, Rookes Evelyn Bell Crompton, and James
Chambers in the Great Seal Patent Office on the 12th May 1880.
CECIL BROOKE PALMER, Gentleman, ROOKES EVELYN BELL CROMPTON, Engineer,
and JAMES CHAMBERS, Foundry Manager, all of the Stanton Iron Works, near
Nottingham, in the County of Derby. "IMPROVEMENTS IN APPARATUS EMPLOYED
IN CASTING METAL PIPES OR TUBES."
For the casting of metal pipes or tubes with the core ends downwards the core
mould for giving form to the interior of the sockets is formed on the exterior of a
ring or short tube, hereinafter called the "socket ring," the lower end of which is
supported temporarily for that purpose in the bed plate of the moulding apparatus.
The interior of this socket ring is formed conical for the purpose of receiving, and
thereby steadying, the end of that portion of the core for the body of the pipe or
tube hereinafter called the "core tube," whilst the outer surface of this socket ring
can only be very slightly conical. The consequences of this arrangement are that
so thin a coating of core mould is admitted on the outside of this socket ring as to
be often injured by the pouring in of the metal, and defective castings result,
whilst the pipe or tube is otherwise injured by the fluid metal coming in contact
with and being chilled by the edge of the metal socket ring referred to, and also
when the desired casting of the pipe or tube has been completed this metal socket
ring is often lifted with the pipe or tube, and it requires considerable labour,
involving loss of time, to remove it.
According to our improvements the socket ring on which that portion of the core
for the interior of the socket is produced, may form part of the bed plate of the
moulding apparatus.
The end of the core tube on which the core mould is formed for the cylindrical
portion or body of the pipe is accurately faced true and square to its axis, and
rests on a similarly faced end of the aforesaid socket ring; the accurate centreing
of these two parts, viz., the core tube and socket ring, is insured by a central
spindle or part on the former passing into a socket or corresponding part in the
latter, or vice versa, as may be convenient.
But that the Invention may be the better understood, we will, by the aid of the
accompanying Drawings, proceed to describe means which we adopt in carrying
the same into effect.
DESCRIPTION OF THE DRAWINGS.
Figure 1 represents by plan view, and Figure 2 by sectional view, parts arranged
according to our Invention, and in both Figures the same letters are employed to
indicate corresponding parts. a is the socket ring on which the core b for the
interior of the socket is formed, and it will be seen that this socket ring a, as
shown, forms a part of the bed plate a¹. The outline c represents a portion of the
socket end of a pipe or tube to be cast; d represents the core tube on which the
core mould e is formed for the cylindrical portion or body of the pipe. The end d
of this core tube is accurately faced true and square to its axis d, and this end d'
rests on a similarly truly faced end a³ of the socket ring a, whilst the accurate
centreing of the core tube d with the socket ring a is insured by the central spindle
or axis d' passing into the socket a³, also forming part of the bed plate a¹; or this
accurate centreing of the core tube d with the socket ring, particularly for small
tubes, may be obtained by a conical or other suitably formed extension of the core
tube d within the upper part of the socket, although this may be varied. By these
means the following advantages are secured :-The core tube and socket ring are
far more accurately brought into true and lineable position. As the surfaces coated

page_text: with core mould cannot be brought into rubbing contact when the parts of the
complete core are being brought into position there is no risk of the core mould
being displaced or injured by such operation.
Again, increased space for core mould is admitted on the exterior of the socket
ring. Again, no portion of the metallic surfaces of either socket ring or core tube
being exposed or left bare of core mould, the direct impact of the molten metal on
such metallic surface, and chilling action consequent thereon, is prevented.
The cone or taper of the outer surface of the socket ring being much greater than
heretofore, increased facility is afforded for freeing it from the interior of the socket
core after the casting of the pipe has been completed.
Again, the fewer and simpler parts of the improved arrangement are economical
and cheap to manufacture.
Having thus described our Invention, and means which we adopt in carrying
the same into effect, we would have it understood that we do not confine ourselves
to the precise arrangements of parts, as shown and described, as the same may be
varied without departing from the peculiar character of the Invention; but what we
do claim is, the improvements in apparatus employed in casting metal pipes or tubes,
whereby the end of the core tube and the upper surface or end of the socket ring
are brought into correct relation, and the molten metal to form the intended pipe
or tube is prevented from coming into contact with the metal of the socket ring,
and thereby increased space is admitted for the formation of the core on the
socket ring, and risk of displacement of the core mould is avoided, substantially
as described.
In witness whereof, I, the said Rookes Evelyn Bell Crompton, have hereunto
set my hand and seal, this 10th day of May, in the year of our Lord
One thousand eight hundred and eighty.
Witness,
ALFRED G. BROOKES,
59, Chancery Lane,
London.
R. E. B. CROMPTON. (L.S.)