A. Gas Regenerative Vertical Ingot Heating Furnace.
Year: 1891

page_text: Date of Application, 11th Feb., 1891
Complete Specification Left, 11th Dec., 1891-Accepted, 16th Jan., 1892
PROVISIONAL SPECIFICATION.
A. Gas Regenerative Vertical Ingot Heating Furnace.
We, ALBERT DE LANDE LONG, Iron and Steel Manufacturer and JAMES
NOBLE, Steel Works Manager to Dorman Long & Co. Ltd., both of Middlesbro'-
on-Tees, in the County of York, do hereby declare the nature of this invention to
be as follows :—
Our invention relates to the construction of a gas regenerative vertical ingot
heating furnace, for heating steel and other metals. The said furnace may be
constructed, so that the pockets, or openings to receive the ingots (to be heated)
may be level with the floor of mill, or at any convenient height above floor line, to
suit the natural water level on site of works, and thereby get the required
regenerative power, without the risk of water interfering with the working of
furnace.
The gas and air regenerative chambers are placed side by side, longitudinally
with the heating chamber, and a divisional, or baffling wall, is placed in the centre
of each chamber. The pockets are formed of arches, and the lids or coverings to
these pockets are made of cast iron and have a flange on all sides to hold the brick
lining. The lid and the said brick lining are curved or arched in form, and to
enable the lining to be keyed in place a slot is left in the said flange on two sides
to allow the key brick to be pushed in from the outside.
A sight hole is provided in the lid, so that the process of heating the ingots may
be inspected without removing the lid.
The furnace is supplied with gas and air through a set of valves of the ordinary
type generally used.
DL
112 1
ATAL
1001
AMBROSE MYALL,
21, Cockspur Street, London, S.W., Agent for the Applicants.
COMPLETE SPECIFICATION.
A Gas Regenerative Vertical Ingot Heating Furnace.
We, ALBERT DE LANDE LONG, Iron and Steel Manufacturer and JAMES
NOBLE, Steel Works Manager to Dorman, Long and Co. Limited, both of
Middlesbro'-on-Tees, in the County of York, 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 :-
Our invention relates to improvements in the construction of a gas regenerative
vertical ingot heating furnace, for heating ingots of steel or other metals.
In the accompanying two sheets of drawings;
Fig. 1 is a sectional plan of a gas regenerative vertical ingot heating furnace,
constructed in accordance with our invention.
Fig. 2 is a longitudinal sectional elevation through A B in Fig. 1.
Figs. 3, 4, 5, 6 and 7 are cross-sectional elevations through C D, E F, GH,
JK, and L M respectively, in Fig. 1.
Fig. 8 is an elevation, to an enlarged scale, of our improved lid or cover for an
ingot pocket.
Fig. 9 is a plan of same and Fig. 10 is a sectional elevation through N O in
Fig. 9.

page_text: chamber, longitudinally with the heating chamber R, one pair being at each end of
the said chamber. The gas and air chambers are horizontal in construction, and
are each provided in the centre with a divisional or baffling wall T. Gas and air
being admitted to the chainbers P and Q, are heated therein and ignited in the
chamber R, and the products of combustion pass through and heat up the
regenerative chambers P and Q¹, and are then taken to the chimney flue.
When the heat in the chambers P and Q is exhausted, the gas and air currents,
are reversed in the usual way.
The divisional or baffling wall T, in each chamber, has the effect of causing the
gas and air, or the products of combustion, to ascend through one half of the
chamber and descend through the other half, thus bringing them more effectually
in contact with all the passages of the regenerator.
The gas and air ports, which afford communication between the heating chamber
and the gas and air regenerative chambers, are arranged as follows.
At each end
of the heating chamber a recessed or enlarged part U U is formed, and behind
each such enlarged part a chamber V V₁ is provided. The form of this chamber
is shewn clearly in the cross section Fig. 5.
The air from the regenerative chamber Q, passes by a port W into the lower
part of the chamber V and thence through two ports XX in the upper part of the
chamber into the heating chamber R. The gas from the regenerative chamber P,
passes into R through ports YY. The chambers Q¹ and P communicate similarly
with R by means of ports W1, X' X and Y Y' respectively. By this arrange-
ment the gas enters the chamber R at the lower part by a single port, while the air
enters by two ports above the said gas port.
The roof of the heating chamber R is formed of a series of cross arches a and
longitudinal arches b the spaces c between them forming the pockets through which
the ingots S are admitted to the chamber. These pockets are closed by cast iron
lids d, shewn in detail to an enlarged scale in Figs. 8, 9 and 10.
These lids are not made flat, but of a pyramidal form, as shewn (though a curve
or dome may be adopted if preferred) and they are provided with a flange e all
round the edge. ff are the fire-bricks, or slabs forming the lining, and g is the
key or wedge brick, which holds them in place, and is inserted through a slot or
opening in the flange from the outside.
Two or more such key bricks may be employed, if necessary, slots being formed
in the flange for such purpose, as required.
A sight hole i is provided in each lid, so that the process of heating the ingots
may be inspected without removing the lid.
The furnace is supplied with gas and air through a set of valves of the ordinary
type generally used.
In our improved furnace the pockets o may be level with the floor of mill, or at
any convenient height above floor line, to suit the natural water level on site of
works, and thereby obtain the required regenerative power without the risk of
water interfering with the working of the furnace.
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: 1
1. In a gas regenerative ingot heating furnace, the combination with a heating
chamber R, of a horizontal gas regenerative chamber P and a horizontal air
regenerative chamber Q, placed side by side at one end of the chamber R and
similar chambers P' and Q placed side by side at the other end, substantially as
set forth.
2. In a gas regenerative ingot heating furnace, the combination with a heating
chamber R of a horizontal gas regenerative chamber P and a horizontal air
regenerative chamber Q, each provided with a divisional or baffling wall T, and
placed side by side at one end of the chamber R, and similar chambers P¹ and Q'
with walls T, placed side by side at the other end, substantially as set forth.

page_text: 3 In a gas regenerative ingot heating furnace, the arrangement of gas and air
ports affording communication between the regenerative chambers and the heating
chamber, substantially as described and shewn with reference to Figs. 1, 2, 3 and 5
of the accompanying drawings.
4. A gas regenerative ingot heating furnace, constructed substantially as set
forth, so that the pockets c for reception of the ingots may be level with the floor
of mill, or at any convenient height above, for the purpose described.
5. In a gas regenerative ingot heating furnace, a pocket lid, having a pyramidal
or arched top, a flange e, fire brick lining ƒ secured by a key brick
inserted
through an opening h. in the flange, and a sight hole i, substantially as set
forth.
Dated this 11th day of December 1891.
AMBROSE MYALL,
21, Cockspur Street, London, S. W., Agent for the Applicants.