Year: 1886

page_text: Date of Application, 20th May, 1886.
Complete Left, 19th Feb., 1887.
Complete Accepted, 22nd Mar., 1887..
1, FRANKLIN HILTON, of Cleveland Villa, South Bank, R.S.O. in the County of
York, Engineer and Manager of Steel and Iron Works, do hereby declare the nature
of this invention to be as follows
This invention has reference to open hearth regenerative gas furnaces of the kind in
which the combustion or melting chamber is a separate structure from the air and gas
regenerators but is in communication with them by means of suitable flues and pipes
or passages the working being controlled by valves as well understood.
In such furnaces various arrangements of ports and passages or flues have been
adopted sometimes both air and gas have been caused to enter the combustion or
melting chamber by the same ports; sometimes each air port has been made to extend
the entire width of the furnace.
These arrangements have been open to objection, the air and gas in the one case
not being so evenly distributed as could be desired, and in the other case considerable
trouble having been experienced owing to the tendency of the main arch of the
furnace to give way.
Now my invention relates to an arrangement having for object to effect a better
distribution of the air and gas over the charge in the furnace, and to increase the
strength and durability of the structure. My furnace comprises an ordinary rect-
angular combustion or melting chamber encased in iron and carried on girders
supported by columns. It is in communication with gas regenerators by an up-take
tube at each end that conveys the gas to a bifurcated passage terminating in two ports
opening into the combustion or melting chamber. There are also two air regenerators
each in communication by a tube and passage with a transverse chamber from which
the air descends through three inclined ports into the combustion or melting chamber,
the said transverse chamber and inclined poris being constructed in solid brickwork

page_text: constituting the end wall of the combustion or melting chamber, and the inclined ports
being arranged above (so as to alternate with) the gas admission ports. By the
described arrangement these parts of the furnace, which in some constructions here-
tofore usually adopted have entailed much trouble and expense, are made exceptionally
strong and better able to resist the intense heat and cutting action of the flame; the
gas and air are thoroughly mixed so that efficient combustion is obtained throughout
the width of the furnace, and the gas entering the furnace is caused to impinge
directly; and when the air ports are used as outlets for burnt gases, they allow these
to readily escape.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.

page_text: Improvements in Open Hearth Furnaces.
I, FRANKLIN HILTON, of Cleveland Villa, South Bank, R.S.O. in the County of
York, Engineer, and Manager of Steel and Iron Works, 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 has reference to open hearth regenerative gas furnaces of the kind
in which the combustion or melting chamber is a separate structure from the air and
gas regenerators but is in communication with them by means of suitable flues and
pipes or passages the working being controlled by valves as well understood.
In such furnaces various arrangements of ports and passages or flues have been
adopted; sometimes both air and gas have been caused to enter the combustion or
melting chamber by the same ports; sometimes each air port has been made to extend
the entire width of the furnace.
These arrangements have been open to objection, the air and gas in the one case
not being so evenly distributed as could be desired, and in the other case considerable
trouble having been experienced owing to the tendency of the main arch of the
furnace to give way.
Now my invention relates to an arrangement having for object to effect a better
distribution of the air and gas over the charge in the furnace, and to increase the
strength and durability of the structure. My furnace comprises an ordinary rect-
angular combustion or melting chamber encased in iron and carried on girders
supported by columns. It is in communication with gas regenerators by a tube at
each end that conveys the gas to a bifurcated passage terminating in two ports opening
into the combustion or melting chamber. There are also two air regenerators each in
communication by a tube and passage with a transverse chamber from which the air
descends through three inclined ports into the combustion or melting chamber, the
said transverse chamber and inclined ports being constructed in solid brickwork
constituting the end wall of the combustion or melting chamber, and the inclined
ports being arranged above (so as to alternate with) the gas admission ports. By the
described arrangement these parts of the furnace, which in some constructions here-
tofore usually adopted have entailed much trouble and expense, are made exceptionally
strong and better able to resist the intense heat and cutting action of the flame; the
gas and air are thoroughly mixed so that efficient combustion is obtained throughout
the width of the furnace, and the gas entering the furnace is caused to impinge
directly; and when the air ports are used as outlets for burnt gases, they allow these
to readily escape.
Referring to the accompanying six sheets of drawings Fig. 1 shews partly in
longitudinal vertical section and partly in elevation an open hearth regenerative gas
furnace embodying my invention.
Fig. 2 is a plan partly in horizontal section in the line A B of Fig. 1.
Fig. 3 is a central transverse section in the line CD of Fig. 1.
1 is a combustion or melting chamber of rectangular form in plan encased in iron
in the usual manner :
it is carried on girders 2 supported by columns 3 and 4

page_text: 5, 5, are gas regenerators each provided with a gas outlet tube 6 for conveying gas to
one end of the combustion or melting chamber. At each end of this chamber there
is in communication with one of the pipes 6 a bifurcated passage 7 terminating in two
ports 8, 8 opening into the said chamber 1. 9. 9. are air regenerators each com-
municating by an uptake tube 10 and passage 11 with one of two transverse
chambers 12 of which there is one at each end of the combustion or melting chamber;
also at each end of this chamber there are three ports 13 made inclined as shown and
each set in communication with one of the transverse chambers 12. The ports 13 are
arranged above and alternately with the ports 8, as clearly shown in Fig. 3. Alter-
nately at each end of the chamber 1 air and gas are admitted simultaneously, respec-
tively through the ports 13 and 8, whilst the corresponding ports 13 and 8 at the
other end of the chamber 1 serve as exits for products of combustion in a manner
well understood in the working of open hearth furnaces. When these ports are used
for the admission of air and gas respectively the alternate arrangement of the ports 13
with the ports 8 as shown in conjunction with the inclination of the air ports, ensures
that the air and gas shall be thoroughly mixed so as to obtain efficient combustion
throughout the width of the combustion or melting chamber. The ports 8, transverse
chamber 11 and inclined ports 13 at each end of chamber 1 are formed in a solid mass
of brickwork of considerable thickness that constitutes the end wall of the said
chamber as shown, and by this construction the apparatus is enabled to resist the
intense heat and cutting action of the flame for a much longer time than when con-
structed as heretofore has been usual. Thus open hearth furnaces constructed
according to my invention may be kept in continuous working for a long period
without stoppage for repairs thus effecting considerable economy in the cost of
working.
Figs. 4, 5, and 6 are similar views to Figs. 1, 2 and 3 illustrating a modification.
In this modified arrangement each gas regenerator 5 is so arranged that its outlet
tube 6 leads directly into the bifurcated passage 7 and the two are disposed trans-
versely of the combustion or melting chamber as shown. Also each air regenerator
is so arranged that its uptake tube 10 and passage 11 communicates directly with one
end of its transverse chamber 12 as clearly shown in Fig. 5. In other respects the
arrangement of the combustion or melting chamber and its air and gas ports is similar
to that hereinbefore described with reference to Figs. 1, 2, and 3, similar parts in the
two arrangements being similarly figured.
It will be understood that the operation of the furnaces illustrated is similar to that
of open hearth furnaces of ordinary construction.
Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed, I declare that what I claim is :-
In an open hearth furnace my improved construction of the combustion or melting
chamber with its gas and air ports and passages arranged as hereinabove described
with reference to Figs 1 to 3 inclusive or Figs 4 to 6 inclusive of the drawings
annexed.
LatoA
KUUKSE
FRANKLIN HILTON.
W. Lloyd Wise,
46, Lincoln's Inn Fields, London, W.(',
Applicant's Agent.