IMPROVEMENTS IN MACHINERY OR APPARATUS FOR MOULDING AND CASTING STEEL AND OTHER METALS
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
We, SAMSON Fox, of the Leeds Forge, New Wortley, Leeds, in the County of
York Engineer and Ironmaster and JOSEPH WHITLEY of the Railway Works,
Leeds, in the said County Engineer and Founder do hereby declare the nature
of said Invention for "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR
MOULDING AND CASTING STEEL AND OTHER METALS" to be as follows:-
In the Specification of former Letters Patent granted to one of us the above-
named Joseph Whitley dated the 18th day of September 1879 and numbered 3742
are described certain Improvements in the manufacture of steel and other boilers,
also of steel and other plates for boiler making, shipbuilding and other purposes,
by the use of rotary moulds, and in the Specification of Letters Patent granted to
us the said Samson Fox and Joseph Whitley, dated the 15th day of November 1881,
numbered 5009, are described further improvements in the above class of machinery
or apparatus Now our present invention has reference to machinery or apparatus
of the kind referred to for the manufacture of tubes such as used for the internal
fire boxes, flues and shells of 'steam boilers and the like, and relates to the con-
struction of the mould in which tubes are cast, the method of mounting and
rotating the same; the construction of the "gate" or "runner," by which the
mould is supplied with metal for the production of a tube; the mounting of such
"gate
or runner in such wise that it can easily be tilted for supplying the
rotating mould with molten metal; and to apparatus by which the quantity of
molten metal required to form a tube of a desired weight may be determined-
We construct the rotary mould of metal, such as cast iron, which we surround at
intervals with malleable metallic hoops, the interior of said mould being lined with
suitable refractory material; one end of the mould is fitted internally with a
metallic ring, across the periphery of which are a number of grooves or vents for
the escape of any gas which may be generated during the process of casting.-
Within this ring and secured thereto, is another ring which projects inwards
beyond the refractory lining and forms one end proper of the mould and prevents
the molten metal from escaping at that part.
"
"
The other end of the mould is formed by another ring secured to the body
thereof and which also projects inwardly beyond the refractory material or lining,
around the outer periphery of the last named ring or other suitable part of the
[Pica 8d1

page_text: mould are a number of V grooves into which take a number of corresponding
V, projections of a frictional driving wheel, the axis of which is so mounted in an
adjustable bearing that the said projections and grooves may be pressed tightly
together and form a silent or frictional driving medium for the rotating mould-
On the axis of said frictional driving wheel is mounted a plain driving pulley which
receives motion from any convenient source by means of a strap-External parts
at or near the ends of the rotating mould are turned truly concentric with its
interior, and the mould is carried by a pair of anti-friction wheels suitably mounted
and on which the said turned parts rest-At each side and bearing against the said
turned parts or bearings of the mould aro adjustable guide pulleys for preventing
lateral displacement of the rotating mould.
"
In order to ensure that tubes or articles produced by the above described
apparatus shall be of the required weight we provide a "gate" or "runner SO
arranged that by a system of levers and weights in connection therewith, the
requisite quantity of metal can be readily determined previous to its being poured
into the rotating mould, the said "gate" or "runner is within the mould and
capable of being turned on axes with which it is provided so that the pouring
takes place in a continuous stream almost throughout the length of the mould
simultaneously, (and not by a number of nozzles on a fixed "gate" or runner as
described in the Specification No 5009 A D 1881, above referred to) thus producing
a perfectly sound casting from end to end.
64
"

page_text: COMPLETE SPECIFICATION.
We, SAMSON Fox, of the Leeds Forge, New Wortley, Leeds, in the County of
York, Engineer and Ironmaster, and JOSEPH WHITLEY, of the Railway Works
Leeds, in the said County, Engineer and Founder, do hereby declare the naturo
of our said invention for "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR
MOULDING AND CASTING STEEL AND OTHER METALS," and in what manner the
same is to be performed, to be particularly described and ascertained in and
by the following statement :-
"
or
"
In the Specification of former Letters. Patent granted to one of us the above-
named Joseph Whitley, dated the 18th day of September 1879, and numbered 3742,
are described certain improvements in the manufacture of steel and other boilers,
also of steel and other plates for boiler making, shipbuilding and other purposes,
by the use of rotary moulds, and in the Specification of Letters Patent, granted to
us the said Samson Fox, and Joseph Whitley, dated, the 15th day of November 1881,
numbered 5009, are described further improvements in the above class of machinery
ur apparatus. Now our present invention has reference to machinery or apparatus
of the kind referred to for the manufacture of tubes such as used for the internal
fire-boxes, flues and shells of steam boilers and the like, and relates to the construc-
tion of the mould in which tubes are cast, the method of mounting and rotating
the same, the construction of the "gâte "runner" by which the mould is
supplied with metal for the production of a tube; the mounting of such "gate
or "runner" in such wise that it can easily be tilted for supplying the rotating
mould with molten metal and to apparatus by which the quantity of molten metal
required to form a tube of a desired weight may be determined.--We construct the
rotary mould of metal, such as cast iron, which we surround at intervals with
malleable metallic hoops, the interior of said mould being lined with suitable
refractory material; one end of the mould is fitted internally with a metallic ring,
across the periphery of which are a number of grooves or vents for the escape of
any gas which may be generated during the process of casting.-Within this ring
and secured thereto, is another ring, which projects inwards beyond the refractory
lining and forms one end proper of the mould and prevents the molten metal from
escaping at that part. The other end of the mould is formed by another ring
secured to the body thereof and which also projects inwardly beyond the refractory
material or lining; around the outer periphery of the last named ring or other
suitable part of the mould are a number of V grooves into which take a number
of corresponding V, projections of a frictional driving wheel, the axis of which is
so mounted in an adjustable bearing that the said projections and grooves may be
pressed tightly together and form a silent or frictional driving medium for the
rotating mould. On the axis of said frictional driving wheel is mounted a plain
driving pulley which receives motion from any convenient source by means of a
strap. External parts at or near the ends of the rotating mould are turned truly
concentric with its interior and the mould is carried by a pair of anti-friction

page_text: wheels suitably mounted and on which the said turned parts rest. At each side
and bearing against the said turned parts or bearings of the mould, aro adjustable
guide pulleys for proventing lateral displacement of the rotating mould. The
abovenamed mounting and lateral guiding of the rotating mould is similar to
those described in our former Specification dated the 15th day of November 1881,
numbered 5009.
"
6
In order to ensure that tubes or articles produced by the above described
apparatus, shall be of the required weight wo provide a gate" or "runner So
arranged that by a system of levers and weights in connection therewith, the
requisite quantity of metal can be readily determined previous to its being poured 1
into the rotating mould, the said "gate" or "runner" is within the mould and
capable of being turned on axes with which it is provided, so that the pouring
takes place in a continuous stream almost throughout the length of the mould
simultaneously (and not by a number of nozzles on a fixed "gate" or "runner" as
described in the Specification No 5009, A.D. 1881, above referred to) thus producing 1
a perfectly sound casting from end to end.
In the accompanying four sheets of Drawings the same letters refer to the same
or like parts wherever they occur, Fig. 1, sheet 1, is a sectional elevation, Fig. 2,
Sheet 2, is a plan partly in section, Fig. 3, Sheet 3, is an end elevation, with the
"gate" or "runner," and part of its mounting in section, Fig. 4, is also an end
elevation shewing the driving pulley and its carriage, also the fulcrum and carriage
of the weigh beam or lever for carrying the "gate" or "runner."
Figs. 5, and 6, Sheet 4, shew in plan and elevation a modified arrangement of,
and apparatus for carrying the "gate" or "runner" and for tilting the same, and
for weighing the molten metal as required.-a, is the external part of the mould,
of cast iron or other suitable material, surrounded with malleable motallic hoops
b, b, b, b, bc, is the internal part of said mould, also of cast iron or other suitable
material, d, the metallic ring fitted into one end of ad are the vents for the
escape of gas, e, is another ring, within the ring d, the part e¹, projecting inwards
and forming one end of the mould, f, is another ring at the contrary end of the
mould, also projecting inwards at ff, are V, grooves in the ring f, by which
the mould is silently and smoothly driven from or by the V, projections g, g, I,
on the driving wheel g¹, on the axle h, mounted in the adjustable bearing i, on the
upright or carriage j-k, is the driving pulley, which is actuated from any suitable
motor. The exterior parts l, l, of the part a, of the mould are turned concentric
with the interior thereof, and rest and rotate upon the antifriction wheels m, m,
suitably mounted as shewn in Figs. 1 and 3,—n, n, n, n, are guide rollers for
preventing lateral notion as the mould rotates. p, is the lining of refractory
material, g, is the " gate" or "runner around which are the two rings r, r, the
centre of which is the axis on which the "gate" or "runner" turns by means of
the handle o when the molten metal is being poured into the mould. In the
rings r, r, are a number of flanged rollers & which bear on the inside of the rings t,t,
and rotate therein, these rings t, t, are joined together by the side pieces u, u, In
the middle of these side pieces are the knife edge centres or gudgeons v. v, taking
into the ends of the forked weigh lever w, and by which the "gate" or "runner
is suspended within the mould. The fulcrum w of the weigh lover w, is carried
by the standardø, To the end w³, of said weigh lever is suspended a weight w³,
representing the desired weight of the tube to be cast. Fig. 5. Sheet 4, shews the
rotating mould in sectional plan, which view, together with the elevation Fig. 6,
shew the modified arrangement (previously referred to) of, and apparatus for
carrying the "gate" or "runner" by means of bearings . ', on the levers y, y, in
which bear and turn the trunnions q', q', of Baid "gate or "runner," tilting being
effected by the handle o, as in the above arrangement. 2, is the weigh shaft with
knife edge centres at a', a', which have their bearings in the standards a³, a*.
The lever y, is fixed about the middle of the weigh shafts, to the end 3³, of which
is hung the weight y', representing the weight of the tube to be cast as above
referred to with respect to Figs, 5 and 6, of the drawings, -
33

page_text: 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 in a centrifugal machine for moulding and casting metal is
1. The use of a mould consisting of a cylinder and an end or ends, the whole so
constructed that vents are left between the said end or ends and the said cylinder
for the escape of gas, substantially as described.
2. The use for rotating the mould, of frictional gearing, substantially as described
and shewn in the drawings.
3. The use of a "gate" or "runner" for pouring in the molten metal, so con-
structed that the metal may be delivered into the mould in a continuous stream
from near one end of the mould to near the other, substantially as described and
shewn in the drawings.
4. Mounting a "gate" or "runner" of the kind referred to in the previous claim
in such a way that it will indicate when the requisite amount of metal has been
poured into it substantially as described with reference to the drawings.
5. The improved centrifugal moulding and casting apparatus, constructed,
arranged and operating substantially as described with reference to the drawings.