IMPROVEMENTS IN FURNACES
Year: 1885

page_text: COMPLETE
SPECIFICATION.
"
I, WILLIAM PHILLIPS THOMPSON Fel. Inst P.A. of the Agency for Foreign
Patent Solicitors, 6 Lord Street, Liverpool, in the County of Lancaster, and
323 High Holborn, in the County of Middlesex, Civil Engineer, do hereby declare
the nature of the said invention for "IMPROVEMENTS IN FURNACES (A com-
munication from abroad by Absalom Backus Junior, of the City of Detroit,
County of Wayne and State of Michigan, United States of America, Inventor) and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
This invention relates to furnaces, and consists of the combinations of devices
hereinafter specified and pointed out in the claims.
In the drawings-
Figure 1 is a longitudinal section illustrating the invention applied to a
locomotive.
Figure 2 a longitudinal section illustrating the invention applied to a stationary
boiler furnace.
Figure 3 is a vertical section.
ovens.
A is the combustion chamber, B the grate, C the feeding door D the ordinary
bridge wall or head sheet. E the boiler, F the supporting wall between two coking
Ga depending wall supported over the fuel bed. It may hang vertically,
or on an incline. H an arch located in front of said wall. The arch and the wall
are arranged to form a coking oven A¹ in the front of the combustion chamber.
I do not limit myself to the employment of the arch or the coking oven as I con-
template the use of the wall supported over the fuel bed, either alone as shown in
Figure 1, or in combination with the arch, as shown in Figure 2.
Air is admitted to the combustion chamber, or to the coking oven in front of
said wall in any desired way; the feeding door may be left open for this purpose.
The arch H is preferably arranged so as to leave a space A between it and the
boiler, to prevent cold air from striking the boiler, and to permit hot air to radiate
between the arch and the boiler. One or more coking ovens may be constructed
under the same boiler.
The coking oven may be located in front of the boiler, if desired.

page_text: By this construction, air admitted to the combustion chamber or coking oven in
front of the wall is directed down thereby upon the fuel bed to aid combustion and
prevent smoke.
The wall and the arch may be constructed solid or otherwise as preferred. The
wall and the arch may be so made as to be readily placed in any ordinary furnace,
either already in use, or in their manufacture.
Having now particularly described and ascertained the nature of the said
Invention, and in what manner the same is to be performed, I declare that what
I claim is
1. In a furnace, a wall located in the midst of the combustion chamber and
supported above the grate, substantially as described.
2. In a furnace, a wall located in the combustion chamber, projecting downward
above the grate, and means for admitting air in front of said wall, substantially as
described.
3. The combination with a furnace of the wall projecting downward over the
grate, and a coking oven in front of said wall, substantially as described. ·
4. In a furnace, a wall projecting downward over the grate, and an arch in front
of said wall over the grate below and separated from the boiler, substantially as
described.