Atmospheric Smoke Burner and Fuel Economizer for Boilers and all Enclosed Fires.
Year: 1892

page_text: Date of Application, 5th Jan., 1892
Complete Specification Left, 4th Oct., 1892-Accepted, 12th Nov., 1892
PROVISIONAL SPECIFICATION.
Atmospheric Smoke Burner and Fuel Economizer for Boilers and
all Enclosed Fires.
JAMES MCLAREN Electrical Engineer Public Library Edinburgh do hereby
declare the nature of this invention to be as follows:-
A standard cast of iron or steel, "in form similar to a lighthouse," being placed
in the firebox of a boiler or other furnace, the interior of the standard being a hot
chamber for air and steam if necessary to pass through, which, when projected
through the apertures at the top causes the smoke from boiler fires, furnaces, or
any other enclosed fire to be almost entirely burned therefore giving greater heat
and doing away with the smoke nuisance.
Fig. 1 is a sectional elevation drawing, like letters indicate like parts wherever
shown, (A) is a cast standard which in actual use becomes red hot, B hot chamber,
C steam jet, D support for steam jet, E hood or divider, F small divisions to
support hood, H arrows showing direction of inlet of air and discharge of heated
air, I liue of fire bars on which the standard rests.
Fig. 2 is the plan drawing.
COMPLETE SPECIFICATION.
Atmospheric Smoke Burner and Fuel Economizer for Boilers and
all Enclosed Fires.
JAMES MCLAREN Supt. Engineer Sandringham Norfolk 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 :-
The apparatus is a standard casting of iron or steel in form similar to a lighthouse,
the casting or burner is placed in the bridge or brick wall at the back of furnace
of horizontal boilers. The brick work of the bridge to an extent encircles burner
to prevent its being destroyed by the action of the fire, two or three inches of
burner "only" being exposed above the brick work. Immediately under the
burner a brick is kept out "which is under the level of the firebars "to allow air
which is partially heated (having passed underneath the whole length of the fire)
to pass up through the centre of burner, which is excessively hot, to assist the
current of air and produce a combination of air and steam fully superheated a "
steam pipe is brought from steam dome of boiler, to the base of burner, and screwed
into a nozle which has an outlet of 32nd of an inch or may be larger according to
pressure of steam. The outlet of steam is regulated by a valve or cock placed in
"pipe in a convenient place for stoker. The steam has almost the same effect
upon the air, as steam has upon water in an injector. When the combination of
air and steam has passed through the hot chamber of burner, and passes out at top
which is so arranged to spread in as horizontal a line as possible so as to mix
thoroughly with the smoke and cause a water gas to be produced this additional
flame of gas fully burns the passing carbon, and so the black smoke is reduced to
a minimum. In vertical and locomotive boilers the burner is placed in centre of
furnace, and protected with firebrick, fireclay, or other fire resisting material,
it is fixed by removing and cutting a piece out of one of the firebars, and allowing
the remaining portions of firebur to rest upon projections cast upon burner for
that
purpose. The burner may be made larger or smaller to suit requirements.

page_text: M
DRAWINGS.
Fig. 1 is a sectional elevation of the apparatus drawn to scale, 6" to 1', fully
lettered, like letters show like parts wherever shown.
(A) is the standard casting or burner.
(B) Hot or interior chamber through which passes a mixture of air and steam.
(C) Section of steam nozle.
(D) Cast support for steam nozle, and pipe from steam dome.
(E) Hood, which is loose to avoid breaking by unequal expansion, this hood is
made to spread equally the whole of the combined heated air and steam evenly
and horizontally all around the burner.
(F) Supports, and part of hood.
(H) Arrows showing direction of inlet of air and outlet at top.
(I) Level of firebars on which burner rests.
(K) Supports for firebars.
(L) Steam pipe from steam dome.
Fig. 2 is a plan drawing with projecting lines to elevation, and fully lettered
same as elevation, scale six inches to one foot.
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
1st. The novelty, and design of the apparatus.
2nd. As a producer of flammable gas, which is used to destroy the escaping
carbon in smoke.
3rd. As being a means of causing more heat, and keeping flues clean, it is an
economizer of fuel, hence, of great service and comfort to users of steam power
and others.
Dated this 1st day of October 1892.
JAMES MCLAREN.