Improved Means for Consuming Smoke.
Year: 1899

page_text: Date of Application, 9th Feb., 1899
Complete Specification Left, 8th Nov., 1899-Accepted, 16th Dec., 1899
Improved Means for Consuming Smoke.
I, WILLIAM CHARLES MAY, of Penn House, Rudall Crescent, Hampstead, in the
County of Middlesex, Sculptor, do hereby declare the nature of this invention
to be as follows:-
My invention relates to certain improved means for consuming smoke produced
either in the furnaces of steam boilers or the like or in manufacturing operations
or processes or in domestic grates.
It has before been proposed to pass the smoke through flames or the like for the
purpose of consuming same but heretofore so far as I am aware the arrangements
of apparatus working on this principle have failed to fully answer the purposes
required of them.
According to my invention I provide a combustion device adapted to occupy the
whole or nearly the whole of the passage way of the chimney or flue leading
from the furnace so that the flue is not contracted the flow of smoke is unchecked,
and at the same time such an area of intense heat is provided that the smoke
is thoroughly consumed, and the draught in the flue or the like is improved.
The device consists of a framing or cage of gas piping containing one or more
grills either horizontally or vertically arranged or both such piping of the frame-
work or grills being provided with gas openings or nozzles to form gas jets when
alight. The gas circulates through the tubes of the framing and grills and is
lighted from the bottom by a pilot jet. Outside walls are provided for the frame
by wiring the same from tube to tube such wires being formed to hold asbestos.
filaments and interior divisions formed in the same way are employed if desired.
The framing or cage forms a filter through which the smoke must pass and
in which it is consumed by the intense heat of the flames. Such framing or cage is
preferably supported on girders or the like and the chimney or flue is provided
with a door near to same for the purpose of inspection.
1000
I, WILLIAM CHARLES MAY, of Penn House, Rudall Crescent, Hampstead, in the
County of Middlesex, Sculptor, do hereby declare the nature of this invention
Price 8d.1]

page_text: and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:—
My invention relates to certain improved means for consuming smoke produced
either in the furnaces of steam boilers or the like or in manufacturing operations
or processes or in domestic grates.
It has before been proposed to pass the smoke through flames or the like for the
purpose of consuming same but heretofore so far as I am aware the arrangements
of apparatus working on this principle have failed to fully answer the purposes
required of them.
According to my invention I provide a combustion device adapted to occupy the
whole or nearly the whole of the passage way of the chimney or flue leading
from the furnace so that the flue is not contracted, the flow of smoke is unchecked,
and at the same time such an area of intense heat is provided that the smoke
is thoroughly consumed; and the draught in the flue or the like is improved.
The device for this purpose consists of a framing or cage containing one or more
grills horizontally or vertically arranged or both, such grills being provided with
gas openings or nozzles to form gas jets when alight over which asbestos filaments
suspended on wires or rods are suitably arranged.
The gas circulates through the tubes of the framing and grills and is lighted
from the bottom by a pilot jet.
One form of apparatus constructed according to my invention is illustrated
in the accompanying drawing in which:-
Fig. 1 is an elevation, partly in section of the apparatus applied to a flue or
chimney.
Fig. 2 is a section on linear of Fig. 1.
In the present case I employ a casing 1 having a perforated cap or cover 2.
The casing may be closed on all four sides but is open at the bottom and is inserted
in a flue or chimney 3 which it may nearly or entirely fill and is carried on
girders 4, 4 placed across the flue so that it may be slid into place. The casing
may be of metal or fire brick in the instance illustrated.
The flue is provided with a door 5 which is arranged to close an opening formed
in the front of the flue so that the apparatus is accessible when in position.
As shown the apparatus is provided with three grills which are supplied from
a gas pipe 6 passing into a part of the flue 3" outside of the apparatus and inside
of the door 5 and which part is closed against the entrance of the products of
combustion. On the pipe 6 are mounted in the present case two air intakes 7, 7
forming part of two Bunsen burners the pipes from which pass through the front
wall of the casing 1 as shewn at 7ª, 7 and are then bent at right angles and pass
horizontally almost across the casing and are returned on themselves the number
of times desired, the arrangement being similar to that shewn in Fig. 2 which
shews the third or highest grill.
These pipes are perforated with holes so that a large number of jets of flame
are provided and above the pipes and preferably in line with same are rods 8
such as shewn in the upper part of Fig. 1 and in Fig. 2 such rods carrying bunches
of asbestos filaments or asbestos blocks or both which become highly heated by the
flames.
From the pipe 6 there branches a pipe 7b on a tee piece of which is carried
another air intake 7 from which a pipe 7 passes to a second grill of horizontally
arranged piping 7° in this case supplied from a single air intake and having
perforations for the jets as in the case of the grill beneath. Above this and in line
with the lengths of such piping are arranged a set of rods 8 carrying asbestos
filaments.
From the ends of the tee piece of the pipe 7b pass two pipes 7ª, 7d each of
which has an air intake 7 from which pipes 70, 7° pass to the inside of the apparatus
and bending horizontally form a third grill over which are rods 8 carrying asbestos
filaments as in the previous cases.
A gas pipe 9 entering the casing carries a suitable jet which may be kept alight

page_text: at all times if desired so that the jets of the grills will be lighted from it as soon
as the gas is turned on.
The door 5 is provided with openings which may be protected by gratings 10
for the purpose of allowing air to pass to the air intakes and also an opening 11
through which the bye pass may be lighted when required.
The products of combustion pass through the apparatus or filter and are
subjected to intense heat from the flames and incandescent filaments and pass
out through the perforations in the cover 2 in an exceedingly reduced and more
or less invisible condition. .
In place of the framing 1 a cage of gas piping perforated for jets of flame may
be used the walls being suitably hung with asbestos filaments.
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. A framing or cage adapted to fill or nearly fill the passage way in a flue
or the like having a series of grills provided with gas jets adapted to heat
asbestos filaments or the like substantially in the manner described.
2. For consuming smoke the arrangement of framing or cage, grills and heat
retaining filaments, substantially as described and illustrated."
Dated the 8th day of November 1899
PHILIP M. JUSTICE,
Chartered Patent Agent, 55 Chancery Lane, London.
For the Applicant.