Year: 1889

page_text: E, is a metallic flange, narrower at the top than at the bottom, and is designed to
fit in a groove, a, formed on the underside of the door, F, said groove being partially
packed with asbestos or other soft fire proof material, so as to form a tight joint and
prevent the air from entering the combustion chamber when so desired.
At each end of the door, F, are secured rods or bars H, which are bent outward.
at right angles at their upper ends, to engage with hooks, I, secured to the main
body, and by which the door is held or supported.
K, indicates the handle secured to the outside of the door, and is provided with an
extension, L, to engage the teeth on the pivot bar, M, so as to support the door at
any desired point when it is desired to regulate the amount of air admitted to the fuel,
to insure a greater or less amount of combustible energy.
The rear portion of the body, A, is also provided with an opening, N, somewhat
shorter than the opening, (, said opening being also provided with bars or rods, d, to
prevent the fuel from falling out, and also to allow the hot air and flame to pass
therethrough.
O, is a pipe or flue surrounding the opening, N, and projects into the space or
chamber, C, under the boiler, D', so as to carry the flame thereto to generate the steam,
a wall of masonry, E', being built up under the flue, O.
It will be noticed that the furnace has no grate or grate-bars, for the vertical support
of the fuel, but that the fuel is supported by the bank of ashes, F', which lies below
the openings, C, and, N, and that when it is desired to feed fresh fuel down in front of
the openings, to bring it into the proper position to be burned, all that is necessary to
be done is to remove a portion of the ashes from the bottom of the main body or
ash-pit, when the coal will descend a distance corresponding to the amount of ashes
removed.
The front portion of the ash pan or pit is closed by a cover, P, so as to conceal the
ashes from view, no other function being performed by it, for the reason that the ashes
are so firmly packed in the lower portion of the furnace that no air can pass there-
through, so that the cover, does not form a factor in admitting air to the fire or
combustion chamber.
As before stated, the opening, C, is longer than the opening, N, and as a consequence
the bars are longer in the opening, C, than in the opening, N, so that the incandescent
fuel will be above the bars in the opening, N, and that the gases will have to travel
downwardly through the incandescent fuel, and are consumed.
It will also be noticed that the air for supporting combustion passes through the
incandescent fuel, and that the fuel is fed down by gravity from the upper part or
magazine of the furnace, so that the heat under the boilers always remains the same,
and no cold draught of air is admitted, as is the case where doors have to be opened
to admit the fuel.
It will also be observed that the incandescent fuel being presented in a comparatively
thin body, allows a greater amount of air to pass through or be mingled with the
gases of the fuel and that a more perfect combustion takes place in this furnace than
in furnaces when the air bas to pass through a larger body of incandescent fuel.
The top of the furnace is closed with a lid or other suitable device.
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―
1. The method herein described of burning fuel in furnaces for steam boilers and
other purposes, which consists in storing and feeding the fuel in a vertical chamber
having grated side openings supporting from lateral displacement the burning fuel,
and the fuel to be burned on a bed or bank of ashes in the lower portion of the
furnace, igniting the fuel lying between the grated side openings, and drawing off
the products of combustion, and supplying the air which supports combustion, at
right angles to the vertical body of the furnace, as set forth.
2. A grateless furnace for steam boilers and other purposes consisting of a vertical

page_text: Date of Application, 19th Nov., 1889-Accepted, 21st Dec., 1889
COMPLETE SPECIFICATION.
Improvements in and relating to the Method of and Apparatus for
Burning Coal and other Fuel in Furnaces for Steam Boilers and
other Purposes.
I, EDWARD FALES, residing at Number 713, Race Street, in the City and County
of Philadelphia, State of Pennsylvania, one of the United States of America,
Gentleman, 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 a new and useful method of and apparatus for burning coal
and other fuel in furnaces for steam boilers and other purposes.
The class of furnaces to which my invention applies, is known as the magazine
furnaces, in which the green fuel is fed down on, and into, the bed of incandescent
fuel, by gravitation, and my invention embraces the method hereinafter described of
burning and feeding the fuel to the combustion point in this class of furnaces; which
consists in storing and feeding the fuel in a vertical chamber, supported by a bed or
pile of ashes, in the bottom of the furnace; igniting the fuel at a point above the
ashes, and below the green coal, and in drawing off the products of combustion, and
supplying the air which supports combustion, at right angles to the vertical body of
coal in the upper portion, or magazine of the furnace.
green
My invention consists further in the method of and apparatus for feeding the
fuel to the point of combustion by supporting the fuel to be burned and the
incandescent fuel, on a bed of ashes, and feeding the fuel down by gravity to the
point where it is consumed, by removing the ashes from the lower end of the furnace,
or from the bottom of the ash-pit.
Referring to the accompanying Drawings:
Figure 1, is a view in front elevation ;
Figure 2, is a vertical sectional view of the furnace, showing it as applied to steam
boilers;
Figure 3, is a transverse sectional view taken on the line, x-x, of Figure 1 ;
Figure 4, is a perspective view of the door.
A, indicates the upper portion of the furnace, secured to or cast with the ash
receptacle or base, B, said base being of greater width than the upper portion to
catch and retain a considerable quantity of ashes for a purpose which will be more
fully described hereinafter.
The upper portion, A, is made tapering down to the bottom of the side opening so
that it is slightly wider and thicker at this point than at the top, in order that the
fuel which is fed in at the top, similar to magazine furnaces will more readily descend
to the point where combustion takes place.
The main body, A, is by preference about four inches thick, i.e. from front wall to
back wall, and may be of any desired width to meet the requirements of the case.
The object in making the main body of the furnace so thin is to present a
comparatively thin sheet or body of incandescent fuel between the openings, C,
and, N, so that the air will pass readily through the same and produce a complete
combustion of the fuel.
The front portion of the main body, A, is provided with an opening, C, in which
are placed a series of bars D, which prevents the incandescent fuel from falling out
and allows the air to pass freely through the incandescent bed of coal into the main
body of the furnace. The spaces, A', are left at the bottoms of the openings so as to
allow the ashes which come through the bars, to fall down into the ash-pit, and should
any of the ashes fall over on the ledges or flanges which surround the openings, they
can be readily pushed off through the spaces, A¹.

page_text: chamber in which the fuel being burned is supported by a bed of ashes in the lower
portion of a vertical chamber, as set forth.
3. A grateless furnace for steam boilers and other purposes consisting of a vertical
chamber in which the fuel being burned, and the fuel to be burned is supported by
a bed of ashes in the lower portion of the vertical chamber, as set forth.
4. A grateless furnace for steam boilers consisting of a vertical chamber in which
the fuel is fed by gravity, the air to support combustion being at right angles to
the travel of the fuel, through an opening in the side of a vertical chamber, as set
forth.
5. In a gravity-feeding furnace for steam boilers and other purposes, the main
body, A, provided with grated openings in front and rear sides thereof, one of
said openings communicating with the space below the boilers, and the other being
provided with an adjustable door for regulating the amount of air admitted to the
fire, as set forth.
6. In a gravity-feeding furnace the main body, A, provided with the openings in the
front and rear sides thereof, the front opening being larger than the rear opening, as
and for the purpose set forth.
7. In a furnace of the character described, the grated openings in the vertical walls
thereof, in combination with the spaces, A¹, outside of the grated openings whereby
the ashes falling through the side bars will pass down into the ash-chamber, as set
forth.
Dated this 19th day of November 1889.
Lovember 1889.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.