Improvements in Burners for Acetylene Gas.
Year: 1898

page_text: Date of Application, 20th Oct., 1898-Accepted, 17th Dec.,
That at aliga
1
1898
1905
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COMPLETE SPECIFICATION.
.
Improvements in Burners for Acetylene Gas.
100 mA.
We, GEORGE BRAY and JOHN WILLIAM BRAY, both of Bagby Works, in the
City of Leeds, Gas Lighting Engineers; 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: un paradoja
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This invention relates to certain improvements in burners for acetylene gas,
and has for its object the obviating of defects in burners as hitherto constructed.
The principal defect common to every burner hitherto constructed for acetylene
gas,
is more or less the liability to deposit carbon on the burner at the point of
ignition. As a consequence the carbon thus deposited must be removed frequently
or the burners become useless.
1
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The type of acetylene burner upon which our burner is an improvement is the
Bunsen or air burner, which will be hereinafter referred to as the air burner.
It is made sometimes for a single jet of flame, and sometimes for two or more
separate jets which form one flat flame. There are separate orifices for each jet
of gas, and suitable air inlets of the form of slits or circular or other shaped holes,
so that there passes along with the gas to the point of ignition, a more or less
quantity of atmospheric air, after the manner of the well known Bunsen burner.
These air inlets may be at any angle to the gas orifice; and in any suitable
number.
3. 3!
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10 ani
In the drawings hereto appended Fig. 1 shows an ordinary form of single jet
air burner as at present made for acetylene gas. a is the central hole through
which the gas passes, bb are the side passages through which the air is drawn
by the current of gas passing through the central hole.
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..
In such air burner the liability to deposit carbon is greatest when the gas is
turned down, as is frequently done for economy, to a very low pressure at the
point of ignition, yielding a small flame. Under these conditions the carbon
deposited within a short time is often sufficient to mar or destroy the efficiency
of the burner.
18...
According to our invention we add to such air burner an open superstructure c
placed above such air burner and surrounding the jet of flame produced by such
air burner. Hence our improved burner consists as it were of two stories. This
arrangement is shown in section by Fig. 2 which shows the form in which we
have found it to answer best, openings being formed from the exterior to the
interior of the superstructure at d. Fig. 3 is a plan of the open "superstructure,
and Fig. 4 a sectional plan of the same." The orifice f in the open superstructure
through which the jet of flame passes from the air burner should be large enough
not to disconnect at any pressure the jet of flame from the air burner, and not
too large to prevent it from acting upon the jet of flame so as to prevent the
injurious depositing or retention of carbon under conditions referred to herein.
When our improved burner is in use the air burner conveys the gas and air
to the point where they are ignited and form the flame at the point 9 shown in
Figs. 1 and 5, and the open superstructure c deals with the flame so produced,

page_text: and prevents the injurious depositing of carbon on the air burner below, par-
ticularly when the gas is turned down to produce a small flame, thus maintaining
the air burner in a state of efficiency. If, as may happen, for instance, while
the flame is low, there is any material deposit of carbon on the open superstructure
such carbon disappears when the gas is turned up to its ordinary pressure for
lighting purposes.
Thus, the open superstructure protects the air burner from the injurious
depositing of carbon, particularly when the jet of flame is turned low, and the jet
of flame from the air burner cleans and maintains clean the open superstructure
when the gas is turned up to its ordinary pressure for lighting purposes.
To produce the flat flame burner we use our improved burner to produce two
or more separate jets of flame in the ordinary manner as illustrated by Fig. 5
and cause them to impinge upon each other to form one flat flame similar in
shape to that produced by the union jet burner which produces its flame by the
union of two jets of gas.
"
To prevent the small gas orifices being stopped up with dust particles, we place
a layer or layers of muslin m (as in our well known "special" and "regulator
burners) suitably fixed in the case or socket.
Although in our improved burners we make the open superstructure and the
burner in one piece, and of any suitable material, it may be made in one, two or
more pieces. Fig. 6 represents a union jet burner with inlets at 6 through
which air is drawn by the current of gas, and openings d into the open super-
structure. The burner is secured in a metal case or socket e in such a way as
to form a durable and suitable connection with any fittings. Fig. 7 represents
a section through the said burner showing the gas passages a.
Fig. 8 shows a form of open superstructure c which may be fitted to the ordinary
burner, shown by Fig. 1, and Fig. 9 represents a section through the open super:
structure e detached from the burner.
The open superstructure e may be constructed as shown by Figs. 10 and 11, the
latter representing a plan of the open superstructure, having an open orifice f
through same, and the former showing an open air space between the open
superstructure and air burner.
Having now particularly described and ascertained the nature of our inven-
tion, and in what manner the same is to be performed, we declare that what wo
claim is
1. A burner for acetylene gas consisting of two parts, the lower part being of
the ordinary construction suitable for burning acetylene gas, and the upper part
being an open superstructure placed in combination therewith, substantially as
and for the purpose hereinbefore described.
2. An open superstructure substantially as hereinbefore described and illus-
trated, suitable for use in connection with an acetylene air burner of ordinary
construction.
T: 10th day of October 1898