Improvements in Cupolas and in Means for Operating the same.
Year: 1888

page_text: Late of Application, 9th Nov., 1888
Complete Specification Loft, 8th luna.
1280 Accented 20th July 1889
PROVISIONAL SPECIFICATION.
Improvements in Cupolas and in Means for Operating the same.
J, JOHN HILTON of the firm of John Hilton and Sons of Buckley Lane, Farnworth
near Bolton in the County of Lancaster, Ironfounders, do heroby declare the nature
of my said invention to be as follows:
This invention relates to improvements in the construction of cupolas and in means
for operating the same which consists in forming the cupola in two parts, the lower
The upper
portion being for the purpose of receiving the metal as it is melted.
portion is fixed in any convenient manner by means of beams or their equivalents. and
the bottom end of the same is disposed at a distance above the upper side of the
lower portion to form a passage for atmospheric air into the cupola. The upper and
lower portions of the cupola are held in position vertically by brackets, stays, or their
equivalents. The top end of the cupola is provided with a removable metallic or
other cover to allow of the same being charged or otherwise. In this invention the
use of a blast fan is dispensed with the draught being effected by coupling the same
to a flue or chimney. In case it is necessary to check the draught openings are
provided either in the side of the cupola or in the cover. The draught can also be
checked by slightly raising the metallic or other cover.
The body of the cupola and the outlet to the flue or chimney are constructed of
metal, and lined with fire-brick or other fire-resisting materials as at present employed
for this purpose in ordinary cupolas.
The usual trough and tapping hole are provided for drawing the molten metal from
the cupola.
COMPLETE SPECIFICATION.
Improvements in Cupolas and in Means for Operating the same.
I, JOHN HILTON of the firm of John Hilton and Sons of Buckley Lane, Farnworth.
near Bolton in the County of Lancaster, Ironfounders, do hereby declare the nature
of my said invention and in what manner the same is to be performed, to be particu-
larly described and ascertained in and by the following statement :-
This invention relates to improvements in the construction of cupolas and in means
for operating the same which consists in forming the cupola in two parts, the lower
portion being for the purpose of receiving the metal as it is melted. The upper
portion is fixed in any convenient manner by means of beams or their equivalents,
and the bottom end of the same is disposed at a distance above the upper side of the
lower portion to form a passage for atmospheric air into the cupola. The upper and
lower portions of the cupola are held in position vertically by brackets, stays, or their
equivalents. The top end of the cupola is provided with a removable metallic or
other cover to allow of the saine being charged or otherwise. In this invention the
use of a blast fan is dispensed with, the draught being effected by coupling the same
to a flue or chimney. In case it is necessary to check the draught openings are
provided either in the side of the cupola or in the cover. The draught can also be
checked by slightly raising the metallic or other cover.
The body of the cupola and the outlet to the fiue or chimney are constructed of
metal, and lined with fire-brick or other fire-resisting materials as at present employed
for this purpose in ordinary cupolas.
The usual trough and tapping hole are provided for drawing the molten metal from
the cupola

page_text: Fig. 1 is a sectional elevation of my improved cupola, and Fig. 2 is a front view
of same.
My improved construction of cupola for melting iron, brass and other metals is
composed of the upper portion A anil the lower portion B. The upper portion A is
constructed of metal plates, and is lined with fire-bricks or other fire resisting
materials Cas at present employed in ordinary cupolas. The bottom end of the upper
portion A is fitted with the water trough D constructed to carry the hottom end of
the lining of fire-bricks or other fire-resisting materials C. The trough D is supplied
with water from any convenient source for the purpose of cooling the same, and is
provided with the cover E. The top end of the upper portion A of the cupola is
closed with the cover G, which can be removed at will for the purpose of charging
the cupola with metal, coke, or other materials. When the cover G is placed in
position and metal is being melted the joint between the same and the top of the
bricks is made with sand H as shown in Fig. 1. The upper portion A is coupled
to the chimney I by the outlet J; the latter being lined or cased with materials
similar to the portion A. The outlet J is fitted with the tubes K for the purpose of
preventing metal, coke, and other substances falling into the flue or chimney.
prevent the tubes K being burned by the action of the flame they are charged with
water from any convenient source by the pipes L. If desired solid rods can be
utilized'in lieu of the tubes K. M M are slight holes provided for the usual purpose.
The upper portion A of the cupola is fitted with the trough N to allow of molten
metal being poured back into the cupola. The trough N is lined with sand or other
suitable materials, and is also provided with the cover O.
To
The lower portion of the cupola is composed of the metallic box or seating B
supported on the pillars P. The box or seating B is fitted with the door R pivoted
thereto by the pin S, and is held in position by the crossbar T mounted in the
sockets U on the underside of the box or seating B. The hinged door R is provided
for the purpose of dropping the fire and "slag" out of the cupola after the metal has
been drawn out, such being effected by simply removing the crossbar T from the
sockets U. The box or seating B is lined with sand or other materials for the purpose
of receiving the metal as it is melted and drops from the bottom end of the upper
portion A of the cupola. The box or seating B is provided with the trough Vand
tapping hole W for drawing the molten metal from the cupola.
The upper portion A is held in position above the box or casing B by the brackets X
and the beam Y; the latter also carrying the charging floor Z. The outside of the
water trough D and the box or casing B are made angular in form for the purpose of
directing atmospheric air into the centre of the fire lying in the opening between the
upper and lower portions of the cupola as it is drawn by the action of the draught
from the chimney I.
One of the chief features of this invention is that metal can be melted without the
use of a fan, which enhances its value as it can be set in operation at any time for
casting either large or small castings. Being coupled to a chimney the firo can be
kept in continually and metal melted as required, thereby dispensing with the
necessity for a large quantity of moulding boxes as casting can be performed as the
moulds are made.
Having now particularly described and ascertained the nature of my said Invention
and in what manner the same is to be performed I declare that what I claim is :-
1. Constructing cupolas with upper and lower chambers disposed to allow of an
opening between them for admitting atmospheric air drawn by the action of the
draught from a chimney, substantially as described and as shown on the drawings.
2. The general construction, combination, and arrangement of parts forming my
improved cupola, substantially as described and as shown on the drawings.
Dated the 21st M 1000
EDMUND CHADWICK,
Agent