Improvements in Furnaces.
Year: 1890

page_text: Date of Application, 6th Mar., 1890-Accepted, 12th Apr., 1890
Improvements in Furnaces.
I, EDWIN FAULKNER PADDON, of 36, Walbrook, in the City of London, Civil
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 and accompanying drawing, (that is to say)
My invention relates to furnaces of all kinds, and more especially to the furnaces of
steam boilers, and it has for its object a novel method of construction and arrangement
by which air is admitted to the coal or other fuel, in such manner that the combustion
of the latter is more completely accomplished and the prevention of smoke more
perfectly prevented, than has ordinarily heretofore been the case.
In order to put my invention in operation I use a plate upon which the fuel is
supplied through the firedoor, and I make, through the front or inner part of it, (which
is preferably made to incline slightly down toward the firebars;) a number of holes or
perforations, through which air is admitted from below.
At or near the front or inner edge of such perforated part of the plate I make
an angled plate or feather inclining down and outward toward the front of the
furnace.
Part of the air admitted below the plate in the usual way from the front of the
furnace passes above the edge of the inclined plate last described, and up through
the holes or perforations described, whence it passes inward and assists the combustion
of the fuel and of the smoke arising from the latter.
The remainder of the air entering the front of the furnace passes up through the
firebars and the fuel in the usual way.
The accompanying drawing which is in illustration of my invention, shews the
improved apparatus applied to a cylindrical boiler having an internal furnace.
Figure 1 is a longitudinal section through the furnace, and Figure 2 a transverse
section. Figure 3 is a plan on a larger scale Figure 4 a transverse section, Figure 5
a back view, and Figure 6 a front view, of my improved apparatus.
a is the boiler, b the firebars, and c the dead plate inside the firedoor. d is the inner
end of the dead plate, shewn sloping slightly down, to meet the firebars, and having
through it a number of holes or perforations e.
At the inner edge of the perforated plate d the angled plate or feather f is formed
or fixed inclining outward and downward.
The holes or perforations may be of any desired size, shape, and number, and they
are preferably inade slightly larger below than above, so that any dirt or obstructions
may pass more readily through them.
The firebars may be either longitudinal as shewn, or transverse, and of any
desired kind.
My improved apparatus may be applied to furnaces of any kind, its shape and
the method of fixing it being modified to suit the circumstances in which it is to
be used.
By my invention the perfect combustion of the fuel is promoted, and economy
is effected, whilst the production of smoke is entirely or to a great extent prevented.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
:-
e,
In furnaces the combination of the plate d perforated with holes
with the plate
or feather inclining downward and outward, substantially as and for the purpose
described and shewn in the drawing.
Dated thie fith day of
EDWARDS & Co.,
35, Southampton Buildings, Chancery Lane, London,
Agents for the Applicant.
EDWARDS & Co.,
35, Southampton Buildings, Chancery Lane, London,
Agents for the Applicant.