Smoke Preventing Apparatus.
Year: 1899

page_text: Smoke Preventing Apparatus.
I, ROBERT HENRY BURNS, of No. 35, Milford Street, Brooklyn, New York,
United States of America, Engineer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement, reference being had to the
accompanying drawings and to the letters and figuies marked thereon, that is to
say:-
My invention relates to a special means for introducing new air or combustion
effecting and assisting medium into a chimney flue or flues of a furnace or com-
bustion chamber, whereby an antagonistic impingement and a resultant heating
and mingling of the admitted medium with the furnace gases is effected, causing
an increased and more efficient combination of the fuel and its gases
My improvements consist in the insertion within a chimney flue of a hollow
revolving chamber riding upon trunnions made tubular on one or both sides for
the admission of the combustion effecting or assisting medium to said revolving
chamber. This revolving chamber is supplied with holes or perforations to
secure a scattered exit or discharge of the contained medium either by means of
applied force, expansion pressure, or ordinary circulation. The revolving cham-
ber is preferably located in as close proximity to the furnace or combustion
chamber as possible, so that the combustion effecting or assisting medium may
the more readily reach the gases to be consumed and secure their complete com-
bustion as near the point of best use as possible
For an economical and complete combustion of fuel and its gases in a heating,
evaporating and like apparatus it is essential and necessary that as much heat
as possible shall pass from the fire and combustion to the heating, evaporating
o work to be done. It is likewise essential and necessary that a certain quan-
tity of the manufactured heat shall pass out through the flue and chimney for
draft purposes. If, now. a sufficient and final combustion of any spare
unburned gases is provided for and secured within the flue and close to the other
combustion through a new and independent supply of the combustion effecting
and assisting medium, a maximum efficiency will have been provided for and
attained, since a greater quantity of heat has been passed to the heating or
or
ס....

page_text: evaporating plant and the flue-combustion has furnished the heat for chimney
circulation and discharge
Referring to the accompanying drawings, Figures 1 and 2 represent transverse
and longitudinal sections of a chimney-flue embodying my improvements, the flue
bong represented as open.
Figures 3 and 4 represent the same, the flue being represented as closed.
Figures 5 and 6 represent a square flue supplied with my improvements, the
full lines showing the flue open, the dotted lines showing it closed.
Similar letters of reference designate like parts or poitions in all the figures
Letter A designates the flue in section. B designates a hollow evolving
chamber or compartment adapted to contain and discharge the air or combustion
effecting or assisting medium C designates the trunnions upon which cham-
ber B revolves or swings and through which the air or combustion effecting or
assisting medium is admitted or forced into chamber B, within which when in
service it becomes completely or partially heated, according to the speed at which
it passes through. Letter I designates exit-holes or perforations at the lager
end, and D¹ designates holes or perforations at the smaller end, of chamber B,
as illustrated. Through these holes or perforations the combustion effecting or
assisting medium is scattered or passed to mingle with the gases from the fuel for
increased combustion C designates a cap or like means for closing the tubular
trunnions to prevent or stay the admission of the combustion effecting or assisting
medium to chamber B. When outside air is admitted, it may be closed by
placing caps C over the ends of the trunnions. When pressure or the combus-
tion effecting or assisting medium is made use of, a valve of any well known
type will be necessary C designates an operating lever or handle to open or
close the flue.
E designates a vent hole or passage for flue-ventilation when the furnace is
not in use or when a slow fire is desired or when the fires are banked. Letter p,
indicates the angle of movement to swing the chamber B to a full opening or
closing of the flue. P designates a flue pocket into which chamber B swings to
open the flue. Should the flue be of ample size, this pocket P need not be pro-
vided, the chamber B resting and revolving within the immediate and direct line
of the flue
In the operation of the device the combustion effecting or assisting medium is
admitted or forced into chamber B, through trunnions C and passes out through
holes D at large end or holes D₁ at the small end, or through both according to
necessity or desire. When the combustion effecting or assisting medium passes
out through the holes or perforations I), it comes into immediate and direct and
antagonistic contact with and impinges upon the fire or furnace gases, resulting
When the medium
in an immediate and more efficient combustion and result
passes out through the perforations D', it mingles with gases of combustion more
slowly and moving in the same direction assists them mechanically to a more
speedy exit. When the draft of chimney is good, there will be no necessity for
These holes D or D¹ may
holes or perforations D', and they should be omitted.
of course be located at any portion of chamber B. They, however, act more
efficiently at the ends as shown.
The flue side of chamber B is preferably made concave, as shown, when used
in connection with round flues. The chamber B is made in form and shape best
suitable to that of the flue in which it is to be used: it is not essential that it
shall be large at one end and small at the other, but only that the chamber shall
he sufficiently large to carry the required combustion effecting or assisting
medium
When the flue is not in use for heating purposes, air may be permitted to pass
into chamber B and out through the holes or perforations and thence through
the ventilating-passage E for fue and chimney ventilation. When a minimum
combustion in slow-fire practice is desired, chamber B is revolved to fill the flue,
its periphery being in closed contact with the inner surface of the flue, the com-

page_text: bustion-assisting medium passing out through holes or perforations D at the fur-
nace end of chamber B in a direction towards the furnace, meeting, impinging
upon, and mingling with its unconsumed gases of combustion, thereby effecting a
resultant combustion of the same
The combustion effecting or assisting medium may be, as preferred, atmospheric
air, assisting gases, atomized petroleum, or the like."
A damper of ordinary or preferred make may be inserted within the flue or
chimney beyond and outside of the combustion-effecting chamber B for ordinary
and usual purposes.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:-
1: In combination with a furnace or chimney flue, an inclosed chamber, the
periphery of which is made to conform to the inner surface of said flue and make
closed contact therewith, tubular inlet-trunnions upon which said hamber
revolves, and exit holes or perforations. as and for the purposes set forth.
2: In combination with a chimney flue, an inclosed revolving chamber
adapted in shape to permit of a complete opening and closing of the flue, tubular
trunnions upon which it revolves, exit holes or perforations in the walls of said
chamber, and a ventilating-passage through said chamber, substantially as and
for the purposes set forth.
3. In combination with a furnace or chimney flue, an inclosed chamber, the
periphery of which is made to conform to and make closed contact with the inner
surface of said flue, tubular inlet-trunnions upon which said chamber revolves,
and exit holes or perforations located at the furnace end of said chamber, as and
for the purposes set forth.
4. In combination with a furnace or chimney flue, an inclosed chamber, the
periphery of which is made to conform to and make closed contact with the inner
surface of said flue, tubular inlet-trunnions upon which said chamber revolves,
exit holes or perforations in the walls of said chamber, a vent or passage through
said chamber, and a pocket into which said chamber may revolve as and for the
purposes set forth.
Dated this 90th day of Januow 1900
ROBERT HENRY BURNS,
By Ernest de Pass,
Chartered Patent Agent,
78, Fleet Street, London, and 5*, Market Street, Nottingham,
Agent for the Applicant.