Improvements in and relating to Smoke-consumers for use with. Furnaces.
Year: 1898

page_text: Date of Application, 29th Nov., 1898-Accepted, 21st Jan., 1899
COMPLETE SPECIFICATION,
Improvements in and relating to Smoke-consumers for use with.
Furnaces.
We, JAMES MCDONALD, Engineer, WILLIAM HENRY KLOCK, Salesman, and
CHARLES ARCHIBALD HALL, Commission Merchant, residing, respectively, at 108,
Freemont Street, Gloversville, Fulton County, New York, 212, South Main
Street, Gloversville, Fulton County, New York, and the Metropole Hotel, Forty-
second Street, and Broadway, New York City, in the County and State of New
York, United States of America, 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 relates to devices for obviating the smoke nuisance arising
from furnaces, and more especially to furnaces of steam plants in which soft
coal is used.
The invention comprises means of peculiar construction, as hereinafter more
particularly described and claimed, for introducing into the furnace commingled
air and steam.
In the accompanying drawings illustrating our invention, in the several figures
of which like parts are similarly designated,-
Figure 1 is a front elevation of a stationary steam plant supplied with our
invention. Figure 2 is a vertical longitudinal section of a slightly different form
of steam-plant supplied with our invention. Figure 3 is a partial horizontal
section and plan view, and Figure 4 a vertical section taken in the plane of
line 4-4 of Figure 3 of a portion of our improvement. Figure 5 is a longitudinal
section of one of the jet pipes, and Figure 6 is an end view thereof. Figure 7 is
a plan view of a couple of manifolds and jets showing a preferred construction
of coupling.
a may represent the brick-work of an ordinary stationary steam-plant, 6 the iron
front thereof, c the smoke-box doors, d the fire-box doors, e the ash-pit doors, f the
boiler, g the smoke-box, h the smoke flue, i the grate-bars of the fire-box, j the
ash-pit and the bridge, all of which may be of any approved construction.
In the preferred construction, our apparatus is applied in the wall or arch Z
over the fire-box, and our said apparatus comprises a box m, preferably made as
a casting, and having a top wall m¹, the inner end of which is inclined, as at m²,
and provided with a vertical flange m³, the lower wall m4 and side walls ms and
supporting posts mo.
The contraction of the inner or discharge end of the box m serves to reduce the
area of the mixed fluids emitted from the box into the fire and to discharge the
same over the fire in a somewhat condensed and relatively thin film or stream,
which is of the width of the box or chamber m. This box may be supplied with
a front, or the iron front of the plant may serve as its front, as shown more particu-
larly in Figures 2, 3 and 4.
Although one manifold may be used for the introduction of steam, we prefer
and have only shown this manifold divided into two. Each manifold n is com-

page_text: posed of a suitable pipe, plugged at one end, as at n', and having a steam
connection n² at the other end. This manifold may be secured in front of the
box m in any suitable manner, as by screws o, applied through feet o¹ on the
manifold. This manifold is supplied with any suitable number of nipples p
say three, and to these nipples are secured jet pipes q which are supplied with
perforated roses or nozzles q',-see details Figures 5 and 6. These steam jets
project into the box m, through suitable holes r in its front, and in the preferred
construction the nipples p substantially close the said holes r.
the
Air inlet holes s, s are provided in the front, and these openings are provided
with sliding dampers,, which are supported and guided by
rib st on the manifold, or otherwise, and are adapted to be operated
by hand or otherwise. We have shown the opening s uncovered and thereby
capable of admitting air, while the opening s¹ is covered.
As shown in Figure 1, the two manifolds are joined by a pipe t between their
adjacent ends, so as to provide for a practical, equal distribution or supply of
steam thereto; and the steam supply pipe is connected with the pipe by a
suitable union or coupling t2, and this pipe t¹ is connected with the pipe, which
in turn is connected with the boiler or other steam supply.
As shown in Figure 7, we prefer to use a coupling of arch form in order to
span the bosses or buttons used for the flue doors on some furnaces, and also to
effect a workmanlike arrangement and connection of the manifolds.
While we may regulate the supply of steam by hand, we prefer to regulate it
automatically, and for this purpose, we provide a valve u in the steam pipe, and
connect its operating mechanism with a lever v, which in turn is connected with
a rock-shaft, mounted upon a bracket 2, and the lever vis furthermore connected
with the piston-rod w of a dash-pot ; and the said lever is provided with a
counterbalance w² for the valve and dash-pot. The rock-shaft ¹ has a depending
arma, which supports a rod a¹, which in turn is guided in an eye of a bracket;
and this rod a projects into the path of the door d of the fire-box, when said
door is open.
Now, it will be understood that when the door is opened for the supply of fuel,
the said door will strike the rod xl and move it in the direction of the arrow,
thereby rocking the rock-shaft, opening the valve u and admitting steam to the
manifolds and raising the piston of the dash-pot, so that a supply of steam and air
is admitted to the fire-box at the time when the greatest volume of black smoke
is generated. As soon as the door is closed and the rod thus relieved of pressure,
the counterbalance w² is free to act to depress the dash-pot piston and close the
valve u and thus shut off the supply of steam; but obviously this shutting off of
the supply of steam is so gradual that the apparatus continues to work for a length
of time after the doors are closed and during the time when there is the greatest
volume of smoke evolved.
Of course the admission of the mingled air and steam during firing and immedi-
ately thereafter, accelerates the fire and practically eliminates the smoke nuisance.
We are aware that prior to this present invention, smoke consumers have been
constructed in which a commingled body of air and steam has been injected into the
fire-box, and under automatic control, and hence our invention must be understood
as consisting of the construction of parts for accomplishing an end similar to that
accomplished by these prior constructions.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
1. A smoke consumer comprising essentially an air chamber or box, adapted
to be arranged above the fire-box and opening into it, and a series of steam jets
arranged in said box and discharging their contents into said box and drawing
thereinto a supply of air as needed, substantially as described.
2. A smoke consumer, comprising an air chamber or box, adapted to

page_text: be arranged above the fire-box to open into such fire-box, and having
openings to the external atmosphere, means to open and close said
atmospheric openings at pleasure, a manifold mounted in front of the
box or chamber, and having a series of steam, jets projecting into said
chamber and discharging their contents thereinto and expelling the contents of the
box into the furnace, substantially as described.
3. A smoke consumer, comprising a box or chamber, adapted to be arranged
within the fire-box of the furnace and to discharge its contents into said fire-box,
and having a contracted discharge end, combined with a steam supply opening
through jets into said box or chamber, substantially as described.
4. A smoke consumer, comprising an air chamber having openings to the
external atmosphere, dampers or slides for opening and closing said atmospheric
openings, a steam manifold having steam jets projecting into the said chamber,
and a rib or web on the manifold for receiving and guiding the said dampers,
substantially as described.
5. In a smoke consumer, an air chamber, a steam supply jet therefor, a valve
for controlling the supply of steam, a dash-pot for closing said valve, a recipro-
cating rod arranged in the path of opening of the furnace door, and means
connecting the said reciprocating rod with the actuating devices of the steam valve
and dash-pot, whereby when the furnace door is opened, the reciprocating rod will
be actuated to open the steam valve and admit steam to the steam jets and the
dash-pot will be set to close the valve at a pre-determined period after the closing
of the door, substantially as described.
6. A smoke consumer, comprising means for injecting commingled air and
steam into the fire-box of the furnace, combined with a steam supply, a controlling
valve therefor, a dash-pot, a reciprocating rod arranged in the path of opening of
the fire-box door, a rock-shaft carrying the actuating mechanism for the valve
and dash-pot, and a connection between said rock-shaft and said reciprocating rod,
whereby as the furnace door is opened, the valve is opened, and as it is closed,
the valve also is closed, substantially as described.
7. A smoke consumer, comprising an air chamber or box, adapted to be arranged
above the fire-box and opening into such fire-box, a couple of manifolds, each
having a series of steam jets arranged in said box and discharging their contents
thereinto, an arched coupling t connecting said manifolds, and means to supply
steam to said manifolds and jets through such arched coupling, substantially as
described.
Dated this 29th day of November 1808
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.