Improvements in the Method of and Apparatus for Consuming Smoke in Steam Boiler Furnaces.
Year: 1892

page_text: Date of Application, 28th Apr., 1892
Complete Specification Left, 26th Jan., 1893-Accepted, 4th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in the Method of and Apparatus for Consuming
Smoke in Steam Boiler Furnaces.
I, WALTER LEES, of Park Place, Halifax in the County of York, Engineer,
do hereby declare the nature of this invention to be as follows:-
In consuming smoke in boiler furnaces according to my invention, I arrange on
the bridge of the furnace, or any position near thereto, a coiled or zigzag pipe,
preferably cast into a metal or other slab. The inlet end of this pipe is in com-
munication with the steam in the boiler, but the outlet end of the coiled pipe, is in
communication with a pipe underneath the grate bars, the outlet end of which,
communicates with the front of the furnace. Steam, thus passing through the
coiled pipe at the bridge end of the furnace, will be super heated, and will enter
the front of the furnace in that condition. The pipe under the grate bars
containing the super heated steam, is surrounded by a pipe of larger diameter,
between which there is an annular space left. Cold air will be drawn into this
annular space, which is conducted by a pipe to the front of the furnace, where it .
enters in combination with the super heated steam, for the purpose of igniting the
smoke and spent gases arising from the fuel. The hot air and super heated steam,
are conducted into the furnace by a suitable form or arrangement of nozzle, which
may have means for admitting atmospheric air from the outside.
Dated this 27th day of April 1892.
TASKER & CROSSLEY,
Halifax, Agents.
COMPLETE SPECIFICATION.
Improvements in the Method of and Apparatus for Consuming
Smoke in Steam Boiler Furnaces.
I, WALTER LEES, of Park Place, Halifax, in the County of York, 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:-
This invention has reference to the method of and apparatus for superheating
steam and admitting it to boiler furnaces for consuming the smoke therein.
In order that the same may be fully understood reference is hereinafter had to
the accompanying drawings, wherein :-
Fig. 1 is a geometrical elevation of a hand fired boiler having a portion of the
side broken away to shew the application of my invention, and
Fig. 2 is sectional plan of the slab or box for superheating steam.
A denotes the boiler, B the fire bars, and C the ordinary bridge upon the top
of or near to which is a metal or other slab D cast with a zigzag thoroughfare E
therein, or a coiled or zigzag pipe enclosed in a box may be substituted for the
cast metal slab. To the inlet a of this zigzag thoroughfare is connected a pipe F,
provided at G with a regulating valve for admitting steam from the boiler A, with
which the pipe communicates at any suitable point; and to the outlet 6 of the said
thoroughfare E is connected a pipe H which passes underneath the fire bars B to
the front end of the boiler, and extends in front of openings I, J, communicating
with the front of the furnace, opposite which openings, the said pipe is perforated
or provided with suitable orifices to admit of a jet or jets of dry steam being

page_text: introduced to the furnace. The openings I, J, admit atmospheric air to the
furnace.
On the valve G being opened, steam passes from the boiler by way of the pipe F
into the zigzag thoroughfare E in the slab D, where its temperature is considerably
raised by the flames and heated air and gases impinging on the said slab on their
way to the flue, and the steam thus superheated is conveyed to the front of the
boiler and forced through the perforations in the pipe H into the furnace,
combining as it enters the furnace with the atmospheric air admitted through the
openings I, and J, the combined dry steam and hot air igniting the smoke and
spent gases arising from the fuel in the furnace, thereby dispensing dense smoke,
creating greater heat and economising fuel, and at the same time increasing the
draught.
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 :-
Firstly. In boiler furnaces, a metal or other slab or box placed on or near the
bridge, having a zigzag thoroughfare or pipe cast or enclosed therein for circulating
steam therethrough and superheating it, in the manner and for purposes substantially
as herein shewn and described.
Secondly. In boiler furnaces, the method of and apparatus for superheating steam
and admitting a jet or jets of dry steam combined with atmospheric air to the
front of the furnace for consuming smoke therein, substantially as herein shewn
and described.
T
1000
TASKER & CROSSLEY,
Halifax, Agents.