Year: 1887

page_text: Date of Application, 22nd Mar., 1887
Complete Left. 23rd Jan., 1888
Complete Accepted. 24th Feb., 1888
1 WILLIAM SEDDON SUTHERLAND of Richmond House, Poplar Avenue, Sandon
Road, Birmingham in the County of Warwick, Engineer do hereby declare the nature
of this invention to be as follows:-
Heretofore in heating mainly for welding when gaseous fuel such as combustible
gas or vapour and air were used, the flames of such fuel have been driven directly
against the object or matter to be heated or seam to be welded and have them passed
into the open air or into flues much heat being thereby lost.
Now the objects I have to view in the present invention are to so conduct the
heating, that loss of heat is minimised and to provide simple durable and efficient
apparatus therefor.
Under the first part of my invention, I cause combustible gas vapour and spray and
air whilst undergoing combustion to sweep alternately in opposite directions, part and
in contact with the surface to be heated so that the products of combustion after
having imparted heat to any desired article, matter or object are used to heat the
incoming air to support combustion.
Under the second part, I subject the article, matter, or object to be heated to the
action of the flames and heated gases above and below or on two or more sides instead
of on one side only as set forth under the first part.
Under the third part, apparatus for carrying the above first part into effect consists
of a combustion chamber having an open space or mouth, two regenerators and suitable
gas vapour and spray and air inlets and outlets. The article, matter, or object to be
heated is placed in the open space or against the open mouth of the combustion
chamber and the flames and products of combustion alternately pass to one or other
regenerator in opposite directions, through the combustion chamber across the open
space and in contact with the article, matter or object to be heated.
Under the fourth part, the combustion chamber is provided with a nose piece,
lateral deflectors and a hearth so disposed that the nose piece directs the flames and
heated gases against the article matter or object to be beated whilst the lateral

page_text: deflectors cause the said flames to travel from one side to the other of the combustion
chamber. The hearth serves to support the article, matter; or object being heated and
to prevent escape of flames and products of combustion into the atmosphere.
Under the fifth part, apparatus under either or both of the third and fourth parts
is provided with tuyeres for the admission of gas vapour and spray alone or mixed
with air into the combustion chamber.
Under the sixth part, those portions of the apparatus such as tuyeres and deflecting
pieces exposed to intense heat are protected by water jackets or boxes.
Under the Seventh part. I combine with apparatus under any or all of the third,
fourth, fifth and sixth parts, valves for reversing the currents of gas vapour spray and
air and I keep such valves cool where necessary by means of water substantially as
set forth in the Specification to British Letters Patent No. 3908 of the year 1882,
granted to me.
Under the Eighth part.-I make the hearth of furnaces under my invention with an
opening or openings for combustible gas vapour or spray and air so that the article
object or matter may he heated simultaneously above and below.
Under the Ninth part.-I combine two or more furnaces under my invention in
such manner that the article matter or object to be heated may be acted on by flames
and heated gases in two or more places simultaneously.
Dated this 91st day of March 1887

page_text: I WILLIAM SEDDON SUTHERLAND of Richmond House Poplar Avenue Sandon
Road Birmingham in the County of Warwick Engineer 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:-
Heretofore in heating mainly for welding with gaseous fuel such as combustible gas
or vapour and air were used the flames of such fuel have been driven directly against
the object or matter to be heated or seam to be welded and have then passed into the
open air or into flues much heat being thereby lost.
Now the objects I have in view in the present invention are to so conduct the
heating that loss of heat is minimised and to provide simple durable and efficient.
apparatus therefor.
Under the first part of my invention I cause combustible gas vapour or spray and
air whilst undergoing combustion to sweep alternately in opposite directions past and
in contact with the surface to be heated so that the products of combustion after
having imparted heat to any desired article, matter, or object are used to heat the
incoming air to support combustion substantially as hereinafter set forth.
Under the second part 1 subject the article matter or object to be heated to the
action of the flames and heated gases above and below, or on two or more sides
instead of on one side only, as set forth under the first part.
Under the third part-Apparatus for carrying the above first part into effect, consists
of a Combustion Chamber having an open space or mouth, two regenerators, and
suitable gas, vapour, or spray, and air inlets and outlets. The article matter or object
to he heated is placed in the open space, or against the open mouth of the Combustion
Chamber; and the flames and products of combustion alternately pass to one or other
regenerator in opposite directions, through the Combustion Chambers, across the open
space, and in contact with the article, matter, or object to be heated.
Under the fourth part-The Combustion Chamber is provided with a nose piece,
lateral deflectors, and a hearth, so disposed that the nose piece directs the flames and
heated gases against the article matter or object to be heated; whilst the lateral
deflectors cause the said flames to travel from one side to the other of the combustion
chamber The hearth serves to support the article matter or object being heated, and
to prevent escape of flames and products of combustion into the atmosphere.
Under the fifth part-Apparatus under either or both of the third and fourth parts
is provided with tuyeres for the admission of.gas, vapour, or spray alone or mixed with
air into the combustion chamber.

page_text: Under the seventh part 1 combine with apparatus under any or an of the third,
fourth, fifth, and sixth, parts valves for reversing the currents of gas vapour spray
and air and I keep such valves cool where necessary by means of water substantially
as set forth in the specification to British Letters Patent No. 3908 of the year 1882
granted to me.
Under the eighth part I make the hearth of furnaces under my invention with an
opening or openings for combustible gas, vapour or spray, and air so that the article
object or matter, may be heated simultaneously above and below.
Under the ninth part I combine two or more furnaces under my invention in such
manner that the article matter or object to be heated may be acted on by flames and
heated gases in two or more places simultaneously.
DESCRIPTION OF THE DRAWINGS.
Figs. 1 and 2 are vertical sections of a furnace illustrative of the first, third, fourth,
fifth, sixth, and seventh parts of my invention-1. is the Combustion Chamber having
an open space or month; 2. 3. are regenerators 4 gas vapour or spray inlets or tuyeres:
5 and 6 inlets and outlets for air and products of combustion; 7 tube or object to
be heated 8. nose piece of refractory material; 9 lateral deflectors of refractory
material; 10. hearth of refractory material carried on a beak in the usual way when
tubes are being heated; 11 gas or vapour supply pipes opening to the tuyeres 4; 12
water jackets or boxes to protect the tuyeres 4, and deflectors 9; 13 valve for reversing
the currents of air, and 14 valve for reversing the currents of gas or vapour. When
spray is used instead of gas or vapour it is admitted into the Combustion Chamber
through a jet or injector." Valves and cocks are provided for cutting off the air and
fuel, and for regulating their speed of flow in any usual manner; 15 Carrying Walls
and arch 16, waste gas flue.
;
When the furnace is in use air flows down one of the regenerators 2, meets with gas,
vapour, or spray, or a mixture thereof, flowing from tuyeres 4 on the same side
combustion takes place, and the products sweep forward between the lateral
projections 9, and nose piece 8, over the surface of the object being heated, and pass
away up to the other regenerator 3 to the chimney or flue-Before the heat of the
regenerator through which the air is being supplied becomes unduly reduced in
temperature the valve 13 is reversed, and the air is caused to flow through the other
regenerator 3, now sufficiently heated by the passage therethrough of products of
combustion The valve 14 is also reversed and the supply of gas, vapour, or spray,
cutt off from the inyeres previously in action, and emitted through the tuyeres on the
other side of the combustion chamber.
The furnace previous to being in action as above set forth is heated by means of
mixed gas and air admitted through the tuyeres 4, and ignited; the products being
allowed to flow through both regenerators to the chimney or flue.
Figure 3, is a vertical section of a modification of furnace in which the regenerators
are disposed below the hearth and combustion Chamber instead of above as in the
previous modification. The figures of reference in figures 1 and 2 are used for like
parts in figure 3-It will be noticed that in this instance separate water boxes, or
jackets, are used for the tuyeres 4 and the deflectors 9.
Figure 4 is a longitudinal section showing two combustion chambers 1, with tuyeres 4,
for heating a piece of metal 7, on two sides under two second part of my invention.
The air heating regenerators are in duplicate.
Fig. 5, is a section of part of a furnace showing a hearth 10, with an opening 16,
for combustible gas vapour or spray under the eighth part of my invention.
It will be obvious that the gas or fuel may be heated before entering the tuyeres by
means of regenerators or otherwise as found desirable.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
First Heating by means of flames and products of combustion sweeping alternately
in opposite directions past and in contact with the surface to be heated substantially
as set forth.
Second-The improvement under the second head substantially as set forth.
Third The combination of a combustion chamber having an open space or mouth
with air and fuel inlets and outlets and regenerators substantially in the manner and
for the purpose setforth.
Fourth The combination of a combustion chamber with a nose piece lateral
deflectors open space or mouth and a hearth substantially as setforth.
Fifth The combination of apparatus under the third and fourth parts with tuyeres
for the purpose set forth.
Sixth The combination of water jackets or boxes with tuyeres and deflecting pieces
in furnaces under my invention for the purpose setforth.
Seventh The combination of valves with apparatus under the third fourth fifth and
sixth parts substantially in the manner and for the purposes setforth.
Eighth Constructing the hearths of furnaces under my invention with openings for
combustible gas or vapour and air for the purposes set forth.
Ninth The combination of two or more furnaces under my invention for the
purpose setforth.
Dated this Twenty first day of January 1888