IMPROVEMENTS IN Con- DENSING STEAM, IN PRECIPITATING AND REDUCING HEAT AND SMOKE, AND IN APPARATUS THEREFOR
Year: 1870

page_text: LETTERS PATENT to Matthew Burnett, of Spennymoor, in the County
of Durham, Engineer, for the Invention of "IMPROVEMENTS IN Con-
DENSING STEAM, IN PRECIPITATING AND REDUCING HEAT AND SMOKE, AND IN
APPARATUS THEREFOR."
"
Sealed the 10th February 1871, and dated the 29th November 1870.
PROVISIONAL SPECIFICATION left by the said Matthew Burnett at
the Office of the Commissioners of Patents, with his Petition, on the
29th November 1870.
I, MATTHEW BURNETT, of Spennymoor, in the County of Durham,
Engineer, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN CONDENSING STEAM, IN PRECIPITATING AND REDUCING HEAT
AND SKOKE, AND IN APPARATUS THEREFOB," to be as follows:-
The object of this Invention is to condense the steam, reduce the heat,
and precipitate the smoke or products of combustion arising from boilers
and engines; and it is particularly applicable to those boilers used in

page_text: I
mines and other enclosed places. The products of combustion are con-
veyed into the chimney, the prolongation of which is by preference
turned downwards and surrounded by a metal casing, which for
convenience of manufacture and application may be made in two
halves, in which water is free to circulate, as hereafter described, it is
secured at one end to the boiler and at the other to the condenser.
Water is delivered from the pump into one end of the casing by a pipe,
and by another or overflow pipe it is conveyed to a perforated nozzle,
and falls in spray into the condenser below, and thus condenses the
steam and precipitates the smoke therein. The water casing destroys
the heat in the chimney while the overflow condenses the steam and
precipitates the products of combustion. A good steady draft is at the
same time obtained,
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Matthew Burnett in the Great Seal Patent Office ]
on the 27th May 1871.
- TO ALL TO WHOM THESE PRESENTS SHALL COME, I, MATTHEW
BURNETT, of Spennymoor, in the County of Durham, Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her.
Letters Patent, bearing date the Twenty-ninth day of November, in the
year of our Lord One thousand eight hundred and seventy, in the thirty-
fourth ycar of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Matthew Burnett, Her special licence that
İ, the said Matthew Burnett, my executors, administrators, and assigns,.
or such others as I, the said Matthew Burnett, my executors, adminis-
trators, and assigns, should at any time agree with, and no others, from
time to time and at all times thereafter during the term therein
expressed, should and lawfully might make, use, exercise, and vend,
within the United Kingdom of Great Britain and Ireland, the Channel
İslands, and Isle of Man, an Invention for "IMPROVEMENTS IN CONDENSING
STEAM, IN PRECIPITATING AND REDUCING HEAT AND SMOKE, AND IN APPARATUS
THEREFOB," upon the condition (amongst others) that I, the said Matthew
Burnett, my executors or administrators, by an instrument in writing
"
'

page_text: under my, or their, or one of their hands and seals, should particularly
describe and ascertain the nature of the said Invention, and in what
manner the same was to be performed, and cause the same to be filed
in the Great Seal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
NOW. KNOW YE, that I, the said Matthew Burnett, do hereby
declare the nature of my said Invention, 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 of reference marked thereon, that is to
say:
The object of this Invention is to reduce the heat and precipitate the
smoke or obnoxious gases and vapors or products of combustion pro-
ceeding from steam boiler and other furnaces, and the exhaust 'steam
from engines, and it is particularly applicable to hoilers and furnaces
used underground in mines and other enclosed places.
The mode of carrying my Invention into effect is as follows :—I
pass the whole or part of the water raised by any pump or pumps,
or from any other available source through a metallic casing or jacket
surrounding the whole or part of the chimney or chimneys for the
smoke, gases, vapors, or products of combustion from a furnace, such
smoke, gases, vapors, or products of combustion after having been
cooled or partially precipitated by means of the said casing coming in
contact with the stream or streams of water, and being further cooled,
condensed and precipitated thereby. The exhaust steam from a non-
condensing engine or engines is allowed to escape into, commingle with,
and be condensed along, with the aforesaid combined stream or streams
of water and vapors, gases, smoke, or products of combustion. The
resulting combined stream or streams is or are then allowed to escape
freely by gravity, or can, if required, be got rid of by pumping.
י
The apparatus for carrying out my Invention may be varied in order
to suit the various constructions of furnaces and boilers, and the situation
of the same to which it may be applied.
Fig. 1 of the accompanying Drawings shows my Invention as applied
to a vertical steam boiler, such as is frequently used for pumping
purposes, and which by this present Invention can be conveniently used
in underground workings or mines, or other enclosed or confined places,
:
£

page_text: or wherever it may be desirable to condense and precipitate the exhaust
steam and smoke, or the latter only. A is the boiler; B, the uptake or
chimney; C, the condensing or precipitating chamber. The uptake is
surrounded by a water jacket or casing E, which for convenience of
manufacture may
be made in two halves. Two or more chimneys or
flues may be used instead of one, and may be enclosed in separate
casings, or in one common casing. The casing is filled with water to
circulate through it from a water delivery pipe G. The water overflows
at the top and escapes through the overflow pipe F, which is made to
enter the condenser C, its exit being by preference formed with a rose
or strainer D, as shown. The exhaust steam pipe H from the engine,
and the exhaust steam pipe H³ from the donkey engine are also made to
enter the condenser. The blow-off pipes I and J from the surface and
from the bottom may also be led into the condenser as shown. Tho
waste water from the condenser is carried off by the pipe K, which also
serves for the draught.
Fig. 2 shows my Invention as applied to a return tube boiler for a
small tug boat or steam yacht fitted with non-condensing engines. A is
the boiler; B, the uptake or chimney, and E, the casing round the same.
Water is injected into the same from the delivery pipe G, which is
formed as a ring surrounding the chimney. The ring has a number of
small holes for the water to issue therefrom in jets or spray so as to
precipitate the smoke. The pipe G may be carried up through tho
casing when desirable. The exhaust steam pipes H, H, are here shown
as entering the casing at the bottom of the chimney, but they may,
if preferred, be made to enter at a higher level. The mingled streams
of wholly or partly condensed smoke and steam escape overboard
through the condensing water escape pipes C, C, the outlets of which.
may be placed above or below the water level.
In order to ensure a good draught for getting up steam, or when the
pump which furnishes the condensing or injection water is not at work,
the top of the casing may be fitted with a cap, door, flap, or valve,
which can be closed or opened by means of a screw on the same, ás
shown here, or by a lever or by other suitable and well-known means
for such purpose. The boss of the spur wheel S forms the nut for the
screw, and can turn in its bearing formed in the bracket T, but cannot
lift. By turning the hand wheel on the spindle P, the pinion Q which.

page_text: gears into the wheel S is made to turn it and thereby to raise or lower
the screw, or respectively to open or shut the valve V.
Figs. 3 and 4 are respectively front view and side elevation, partly in
section of a marine boiler for condensing engines, and fitted with my
smoke-condensing apparatus. A is the boiler and B the chimney. The
latter has a surrounding casing E, which is continually supplied with
water from the delivery pipe G. A shield a is arranged in the casing
opposite to the exit of the pipe G, in order to prevent the rapid
oxydation of that part of the chimney by the direct impinging of the
water on the hot iron. An overflow pipe F conveys water from the top
of the casing to the condenser C, and has a rose or strainer D at its exit,
as shown. The waste water is discharged overboard as shown by the
two branch pipes K, K. The top of the chimney is fitted with a cap or
valve for the same purpose as explained with reference to Fig. 2.
By means of this Invention steam boilers for working engines for
pumping and other purposes can be conveniently placed and worked in
mincs and other places where smoke or steam would be objectionable
or difficult to lead off. Also on board men-of-war, steam yachts, river
and other steamers, where the smoke is objectionable.
. This Invention is also particularly applicable for getting rid of
noxious vapors and gases in smelting houses, chemical works, factories,
and other places.
And having now described the nature of my said Invention, and in
what manner the same is to be performed, I declare that I do not claim
the use or application of a water casing around the chimney or chimneys
of steam boiler or other furnaces; but I do claim,—
First. The application of a water casing round the chimney or
chimneys of steam boiler and other furnaces for the purpose of cooling
or partially precipitating the smoke, vapors, gases, or products of com-
bustion from the same, and subsequently further precipitating or
condensing such products of combustion by direct contact with water,
substantially as hercin-before set forth.
Second. The total or partial condensation of the exhaust steam from
so called high-pressure or non-condensing engines by mixing the same
with the precipitated or partially precipitated products of combustion
and condensing water, all substantially as herein-before set forth.

page_text: Third. The various constructions and arrangements of apparatus
for condensing steam and for precipitating and reducing heat and
smoke, substantially as herein-before described and illustrated in the
accompanying Drawings.
'
In witness whereof, I, the said Matthew Burnett, have hereunto 5
set my hand and seal, this Twentieth day of May, in the
year of our Lord One thousand eight hundred and seventy-
one.