An Apparatus for the Combustion of Gases or for Preventing the Formation of Smoke, applicable to Steam Boiler or other Furnaces.
Year: 1892

page_text: Date of Application, 12th Apr., 1892
Complete Specification Left, 12th May, 1892-Accepted, 27th Aug., 1892
PROVISIONAL SPECIFICATION.
An Apparatus for the Combustion of Gases or for Preventing
the Formation of Smoke, applicable to Steam Boiler or other
Furnaces.
I JAMES BARLOW of the Moss Bridge Iron and Boiler Works Crawford Street,
Rochdale in the County of Lancaster, do hereby declare the nature of this invention
to be as follows:-
My invention relates to an apparatus for effecting the consumption of smoke, and
is applicable to the furnaces of mill or other boilers, it is well known, that many
contrivances more or less complex, have been adopted for consuming smoke arising
from the furnaces of boilers and thus to prevent its escape into the atmosphere.
My invention is to effect such an object, but according to my arrangement, I
employ a simple and economical contrivance for such purpose, which I will now
proceed to describe.
According to my arrangement I construct what I term for convenience of
description a secondary "bridge in proximity to a "primary"or ordinary bridge,
usually employed in connection with the furnace.
I construct my bridge at a convenient distance from the ordinary bridge, con-
sequently a space is formed between the two bridges which space, I term the air
space or chamber. In connection with the secondary bridge, I place the open ends
of two or more tubes, in any convenient position, so as to be in communication with
the air space before mentioned which tubes I term air tubes, and which extend in
the longitudinal direction of the boiler, either in the inner flues or the inner and
outer flues of the boiler that is-from the furnace to the back part thereof,--and
which terminate in a branch piece, upon which piece is fixed, or vertically attached,
an air inlet tube or pipe provided with a suitable damper.
If desired I may employ another modification in which arrangement two or more
tubes may be employed one above the other and applied and adapted in connection
with the air space such an arrangement may be employed when my invention may
be used in connection with boilers not having cross tubes, when cross tubes are
provided in connection with the boiler the air tubes may be supported at convenient
distances by means of suitable brackets or may be so interposed between the cross
tubes so as to rest thereon.
I also provide an opening with a door in connection with the bracket supporting
the ordinary bridge, or if the bridge be constructed or built solid I provide a suitable
opening so as to allow soot or other deposit to be withdrawn from the air space
towards and out at the front end of the boiler.
As the gas or smoke issues from the fire on the grate surface or furnace, the same
necessarily passes over the bridge by means of the draught from the chimney, currents
of air are likewise and at the same time drawn from the atmosphere, through the
pipes or tubes. The air drawn through the tubes is diffused or distributed within
the air space, which air space causes the ignition of the gases, and consequently the
consumption of the said gases, consequently obviating the escape of the same in large
volumes into the atmosphere in the form of smoke.
I claim that according to my arrangement I am enabled to distribute or diffuse
amongst the gases immediately passing over the furnace bridge, a large volume of
heated air of high temperature, practically of the same temperature as the gases
which leave the furnace, and in direct contact therewith, and thus to effect complete
combustion thereof. It will be evident, that the supply may be increased more or
less, according to circumstances, accordingly as pipes or tubes of greater or less

page_text: area or capacity are employed, and I further claim that according to my arrange-
ment, a large surface of air conducting tubes are so arranged, as to be exposed to
or subjected to the influence of heat and consequently am enabled to obtain an
abundant supply or inflow of air, and this in proximity to the furnace and to comingle
with the gases, thus to ensure the consumption thereof.
Dated this 11th dow of A ………¡L AT
1000
COMPLETE SPECIFICATION.
An Apparatus for the Combustion of Gases or for Preventing
the Formation of Smoke, applicable to Steam Boiler or other
Furnaces.
I JAMES BARLOW of the Moss Bridge Iron and Boiler Works Crawford Street
Rochdale in the County of Lancaster Boiler Maker, 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 :-
My invention relates to an apparatus for effecting the consumption of smoke,
and is applicable to the furnaces of mill or other boilers, it is well known,
that many contrivances more or less complex, have been adopted for consuming
gases arising from the furnaces of boilers and thus to prevent its escape in the form
of smoke into the atmosphere. My invention is to effect such an object, but
according to my arrangement, I employ a simple and economical contrivance fór
such purpose.
66
י,
According to my arrangement, I construct what I term for convenience of
description a secondary" bridge in proximity to the "primary or ordinary
bridge, usually employed in connection with the furnace. I construct my bridge at
a convenient distance from the ordinary bridge, consequently a space is formed
between the two bridges which space, I term the air space or chamber.
In connection with the secondary bridge, I place the open ends of two or more
tubes, in any convenient position, so as to be in communication with the air space
before mentioned which tubes I term air tubes, and which extend in the longitudinal
direction of the boiler, either in the inner flues or the inner and outer flues of the
boiler that is extending from the furnace to the back or front part thereof
respectively and which terminate in a branch piece, upon which piece is fixed
or vertically attached an air inlet tube or pipe provided with a suitable damper.
If desired I may employ another modification in which arrangement two or more
tubes may be employed one above the other applied and adapted in connection with
the air space, such an arrangement may be employed when my invention may be
used in connection with boilers not having cross tubes, when cross tubes are
provided in connection with the boiler the air tubes may be supported at convenient
distances by means of suitable brackets or may be so interposed between the cross
tubes as to rest thereon.
I also provide an opening with a door in connection with the bracket supporting
the ordinary bridge, or if the bridge be constructed' or built solid I provide a
suitable opening so as to allow soot or other deposit to be withdrawn from the
space towards and out at the, front end of the boiler.
In order that my invention may be understood I have reférence. to the
accompanying sheets of drawings in which like letters of reference indicate like
parts throughout the figures therein shewn.
Fig. 1. represents the application of my invention to the furnace of a steam
Fig. 2 is a plan of Fio. I
boiler.

page_text: Fig. 4 is a modification of my invention.
Fig. 5 is an elevation shewing another modification of my invention.
Fig. 6 is a plan of Fig. 5.
Fig. 7 is an end view of Fig. 5.
According to my arrangement or construction I construct or arrange a bridge a
in each flue of the boiler behind the ordinary bridge of the furnace, at a
convenient distance therefrom in order to form or allow of a space d which
term the air space or chamber. I arrange in connection with the support or
secondary bridge a, one or more air tubes e, in any convenient position with
relation to the flue, see Fig. 3 which tubes may be supported by brackets or may
be allowed to rest on the ordinary cross tubes of the boiler the open ends of which
communicate with the air space d which tubes extend therefrom to a junction
piece or pieces situate at the back part of the boiler to which is attached an
outlet or air tube g, which is provided with a suitable damper ', consequently a
communication exists between the air spaced and the outer atmosphere this
arrangement may be seen by referring to Figs. 1 & 2. According to another
modification shewn in Figs. 5 & 6 the air inlet tube g may be provided at the
back part of the boiler as shewn in Fig. 1 or may be provided at the front end of
the boiler as shewn in the figures referred to by which arrangement the air tubes
first pass into the flues h, and extend from the front of the boiler along the flues
and then terminate in the interior flues i, in a chamber which chamber is enclosed
by means of a suitable door at and being underneath the furnace bars e' of the
furnace c, or may enter into the air space through the secondary bridge as shewn
by dotted lines. According to another modification shewn in Fig. 4 I may if
desired employ or arrange the tubes e one above the other and in connection with
the chamber d, as shewn in Figs. 1, 2, & 4. I provide an opening), in connection
with which I employ a door k, the object of this opening being to allow soot or other
deposit to be drawn out at the front end of the boiler.
The operation of our invention is as follows:-
ej
As the gases issue from the fire on the grate surface or furnace c, the same
necessarily pass over the bridge by means of the draught from the chimney,
currents of air are likewise and at the same time drawn from the atmosphere,
through the pipes or tubes e; the air drawn through the tubes is diffused or
distributed within the air space d, or in the chamber c², see Fig. 5, which distribution
causes the ignition of the gases, and consequently the combustion thereof thus
obviating the escape of the same in large volumes into the atmosphere in the form
of smoke. I claim that according to my arrangement I am enabled to distribute
or diffuse amongst the fuel on the grate surface or the gases immediately passing
over the furnace bridge, a large volume of air (heated) of high temperature,
practically of the same temperature as the gases which leave the furnace, and in
direct contact therewith, and thus practically to effect complete combustion thereof.
It will be evident, that the supply of air may be increased more or less, according
to circumstances, accordingly as pipes or tubes e of greater or less area or capacity
are employed, and I further claim, that according to my arrangement, a large
surface of air conducting tubes are so arranged, as to be exposed to or subjected to
the influence of heat, and consequently am enabled to obtain an abundant supply
or inflow of heated air capable of regulation and this is supplied either in the midst
of the burning fuel or in proximity to the furnace so as to co-mingle with the
gases, thus to ensure the consumption thereof.
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.) In combination two or more air tubes or pipes e having a communication with
the outer atmosphere whereby a large area of heating surface may be obtained
and a chamber d substantially as and for the purposes herein fully set forth and
described in the drawings hereunto annexed.

page_text: (2.) The chamber d having a communication or connection with the air inlet
tubes substantially as and for the purposes herein fully set forth and described in
the drawings hereunto annexed.
(3.) In combination two or more air inlet tubes or pipes e having a communication
with the outer atmosphere with an enclosed chamber situate under the fire bars
substantially as and for the purposes herein fully set forth and described in the
drawings hereunto annexed.
(4.) The hot chamber e² substantially as and for the purposes herein fully set
forth and described in the drawings hereunto annexed.
1002
J. H. BUTTERWORTH,
For the Applicant.