Improvements in the Process or Method of Casting Chilled Rolls.
Year: 1893

page_text: Date of Application, 10th Jan, 1893
Complete Specification Left, 25th Oct., 1893-Accepted, 6th Jan., 1894
PROVISIONAL SPECIFICATION.
Improvements in the Process or Method of Casting Chilled Rolls.
We, BENJAMIN DAVIES MARTIN and NOAH MARTIN, both of 126 Lord
Street, Wolverhampton, in the County of Stafford, Iron Founders, do hereby
declare the nature of this invention to be as follows:-
This invention relates to the manner in which we construct and arrange
appliances for casting chilled metal rolls, and has for its object to prevent the
cracking, and imperfection of surface of the rolls. In carrying our invention
into effect we arrange the chill box of ordinary construction to form the central
main chilled portion of the roll and we apply to this central box an upper and a
lower second casting box to form the necks and wobblers of the rolls. The bottom:
end neck and wobbler we form as a separate or independent casting in the lower
sand box and we cause it to terminate in a stepped conical tongue piece or centre
piece for standing up within the interior of the chill box, the length of the tongue
being sometimes arranged so as to reach to the upper sand box. The form and
proportions of this central tongue or projection we vary to suit the particular size
and weight of roll which is to be cast, but we preferably form it with ledge like
surfaces so that when the molten metal is run in to form the chill, the weight of
the same may be in a measure taken upon these ledges and thus transmitted on to
the lower cast neck and wobbler then in position within the lower box.
We generally cast the lower neck, wobbler and stepped conical tongue piece im
the same metal from which we are immediately afterwards to cast the chilled
portion and upper neck and wobbler so that the central tongue and end portion
may be very hot or in a partly pasty condition when the main body of metal for
the chill and upper portion is poured into the box. We preferably east the lower
neck, wobbler and stepped conical tongue piece by providing a metal mould, giving
a cast of the tongue piece, which we place upon the bottom sand box within the
chill, and into which we pour the liquid metal, immediately afterwards removing
the metal mould for casting the main body and upper portion of the roll.
The lower second box we provide with a specially formed brick or other suitable
material channel or culvert which surrounds or partly surrounds the circular end
of the interior of the chill box. This brick or like culvert we provide with a
number of openings or inlet apertures arranged on an inclined spiral or twisted
manner about the upper circular face of the culvert for the purpose of directing
the molten metal when introduced thereto from the ordinary supply bib or bibs, or
from the "gates," towards the centre of the casting, that is the centre line of the
chill box.
The "
"gate or supply passage for. running the molten metal into the bottom
circular delivery channel we arrange as a projecting bib or ordinary sand moulded
or fire brick passage upon the outer portion of the chill box, or in any well known
manner for supplying the metal to the bottom of the chill.
"
We make our central supply conduit of fire bricks or other suitable material
preferably in the form of segments, and we cause the down "gate" or main supply
for the molten metal to run through a like channel, or passage to enter the circular
conduit.
We modify the form of our circular delivery conduit and the length and form of
our central tongue to suit any particular requirement. We arrange the feeder
upon the upper box in any usual or ordinary manner, or we modify its form and
position to suit the projecting tongue piece when such is made to run a great
|length or through the entire length of the casting.

page_text: We sometimes arrange for a different metal or an alloy for casting the bottom or
both end bearings and wobblers; but when so doing we prefer to cast the chilled
portion upon the other while the metal is hot.
Dated this 10th day of January 1893.
MARKS & CLERK,
13, Temple Street, Birmingham, Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in the Process or Method of Casting Chilled Rolls.
We, BENJAMIN DAVIES MARTIN and NOAH MARTIN, both of 126 Lord Street,
Wolverhampton, in the County of Stafford, Iron Founders, 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 :-
This invention relates to the manner in which we construct and arrange appliances
for casting chilled rolls, and has for its object to prevent the cracking and imper-
fection of surface of the rolls.
In the two accompanying sheets of explanatory drawings
Figure 1 is a part sectional elevation of one method we adopt in carrying our
invention into effect when employing a central tongue piece which does not run
right through the whole length of the roll.
Figure 2 is a sectional elevation showing our improved system of casting the
central sole piece which is to run right through the roll, although an ordinary sand
mould may be employed for this purpose when desired.
Figure 3 is a sectional elevation of our casting box and feeders showing the
sole or central block in position ready for the casting of the chill coat upon it.
Figure 4 is a section plan, through x y (Figure 3), of our improved method of
arranging our central feeding or delivery.
On Sheet 2, Figure 5 is an elevation of our sole which may be either cast in
sand or in a metal box, and
Figure 6 is a sectional elevation showing it in position ready for having the chill
coat cast thereon.
In carrying our invention into effect we arrange a metal box A of ordinary
construction to form the central portion or sole of the roll as shown in Figure 2,
and we apply to this central box an upper and a lower second casting box B and C
to form the necks and wobblers of the rolls. The bottom end neck and wobbler D
we sometimes form as a separate and independent casting in the lower sand box C₁
as shown in Figure 1 and we may then cause it to terminate in a stepped conical
tongue piece D or centre piece for standing up within the interior of the chill box,
the length of the tongue being sometimes arranged so as to reach to the upper
sand box. The form and proportions of this central tongue or projection we vary
to suit the particular size and weight of roll which is to be cast, sometimes carrying
it up in a parallel form D2 as shown in Figure 2 and Figure 3. When casting it
so as not to run right through we may form it with ledge like surfaces so that when
the molten metal is run in to form the chill, the weight of this hot metal may be in
a measure taken upon these ledges and thus transmitted on to the lower cast neck
and wobbler then in position as a solid body within the lower box.
We sometimes separately cast the sole and the necks and wobblers in the usual
manner either in sand or a metal box and then subsequently remove the mould or
box so as to permit the outer chill or body to be cast upon the sole neck and
wobbler so formed, preferably casting the chill portion on to the sole or central
piece while such sole is hot. When casting the sole with its necks and wobblers in
a metal box A, we place the metal mould upon the bottom sand box C as shown
in Figure 2, subsequently removing the metal box A for enabling the outer chilled
body or jacket E to be cast as shown in Figure 3.

page_text: The lower sand box we provide with a specially formed brick or other suitable
material channel or culvert F which surrounds or partly surrounds the circular end
of the interior of the chill box. This brick or like culvert we provide with a
number of openings or inlet apertures ff sometimes arranged on an inclined, spiral
or twisted manner about the upper circular face of the culvert for the purpose of
directing the molten metal when introduced thereto from the ordinary supply bib.
or bibs H or from the "gates" towards the interior of the casting.
""
The "gate
or supply passage for running the molten metal into the bottom.
circular delivery channel we arrange as a projecting bib or ordinary sand moulded.
or fire brick passage H upon the outer portion of the chill box, or in any well known,
manner for supplying the metal to the bottom of the chill.
We make our central supply conduit F of fire bricks or other suitable material
preferably in the form of segments as shown in Figure 4, and we cause the down
gate
or main supply for the molten metal to run through a like channel or
passage to enter the circular conduit.
1;
We modify the form of our culvert delivery conduit to suit any particular
requirement, and we sometimes cast entirely from the bottom conduit. We also.
vary the length and form of our central tongue or sole D D¹ to suit any size and
form of roll or thickness of walls E which may be desired. We sometimes arrange.
the feeder F upon the upper box in any usual or ordinary manner arranged
similarly to that upon the bottom box as shown in Figure 3, and we modify its.
form and position to suit the projecting tongue or sole D when such is made to run
a great length or through the entire length of the casting.
We sometimes arrange for a different mixture of iron for casting the sole and
end necks and wobblers to that employed when casting the chilled jacket, but.
when so doing we prefer to cast the chilled portion upon the other while the sole
is hot.
When providing for the expansion and contraction of the inner and outer masses.
of metal forming a complete roll having our independent sole piece as hereinbefore
described, we prefer to form channels or ribs & upon the surface of the inner
tongue or sole D³ (Figure 5) so as to cause the chilled outer metal E (Figure 6).
when poured on to come well into contact with and bind one surface upon the other.
Similarly for further securing the jacket to the sole we sometimes arrange a number-
of hook like projections K upon and within the outer surface of the sole as shown.
in Figure 5 and Figure 6.
Figure 6 illustrates in sectional elevation the arrangement of our mould with a
continuous sole when ordinary open sand box top feeding of the molten metal is.
employed for casting the chilled jacket.
Having now particularly described and ascertained the nature of our said inven--
tion and in what manner the same is to be performed, we declare that what we
claim is:
In the process of casting chilled iron rolls, the combination and arrangement of
an independent central tongue or sole to form with the outer jacket or annular ring
of metal, a roll in which the chilled metal jacket is produced by interior and
exterior cooling, so as to induce a neutral line dividing or merging the stresses.
within the jacket, substantially as hereinbefore described and as illustrated in the-
accompanying drawings.
De
MARKS & CLERK,
13, Temple Street, Birmingham, and
18, Southampton Buildings, London, W.C.,.
Agents for the Applicants.
MARKS & CLERK,
13, Temple Street, Birmingham, and
18, Southampton Buildings, London, W.C.,.
Agents for the Applicants.