Year: 1897

page_text: Date of Application, 15th Apr., 1897-Accepted, 5th June, 1897
AF ACC
I, JULES LEBEAU, of Châtelineau, in the Kingdom of Belgium, Engineer, 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:
This invention relates to a novel burner for use in illumination by acetylene gas
wherein an arrangement of gas outlets combined with air passages and a special form
of burner, have for their object to effect the complete combustion of the acetylene
gas and to ensure that the flame is regularly formed and efficiently supplied
with air.
To enable my invention to be fully understood I will describe it by reference to
the accompanying drawing, in which :-
Figure 1 is a vertical section of a burner made according to my invention.
Figure 2 shews a vertical section and a plan of a slight modification.
Figure 3 shews a vertical section and a plan of another design of my burner, and
Figure is a vertical section of a further modification.
b
The burner is formed from the single piece or block B of any suitable material
but preferably of steatite or refractory earth, the said piece B being of sufficient
size to permit of the formation in its upper part of two or more small passages
which are inclined at a suitable angle for instance, from 75° to 80° so as to cause the
jets of gas issuing from them to meet at a point D and also to allow of the formation
of two or more air passages E parallel to the outlet passages b so as to create air
currents flowing parallel to the jets of gas and meeting in the flame at a given point
thus ensuring on account of their parallel direction, the regular supply of air to the
flame by the burner itself.
The piece B from which the burner is made being hollow forms a small chamber R
which has for its object to provide within the burner a light cushion of gas adapted
to compensate for any slight diminutions in pressure which may occur momentarily
in the passages. This small chamber completes the burner and assists in the formation
of a flame which is fixed, which spreads regularly and is not subject to any
variation.
Figures 2, 3 and 4 shew three modifications of the above described burner.
Figure 2 illustrates a burner the arrangement of which is similar to that shewn
in Figure 1 but wherein I have arranged several groups of gas passages in such a
manner as to cause the formation of several flames which are parallel to one another
above the burner. In this burner also in order to reduce the size of the piece B the
air supply necessary for feeding the flame is formed as shewn in the figure by an
annular layer of air surrounding the burner and obtained by forming the burner in
the shape of a truncated cone of which the generatrix is parallel to the gas
passages b so that the air flows to the flame in a direction parallel to the gas jets.
Figure 3 shews a form of burner wherein a ring shaped flame can be obtained.
In this arrangement the outlet orifices b for the gas and the air passages E are formed
in the cylindrical surface of the piece B.
Figure 4 shews an arrangement similar to the above but wherein the air passages E
instead of being formed in the body of the burrer are formed in two shoulders d of
the said burner.
This arrangement is very advantageous as whilst ensuring like the other forms the

page_text: regular supply of air to the flame it also provides two screens by extending the
shoulders d which screens have for their object to protect the flame from outside
air currents. By this means an illuminating power similar to that obtained by the
arrangements shewn in Figures 1, 2 and 3 is obtained, the flame being at the same time
more fixed.
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 :-
1. A burner for acetylene gas consisting of a piece or block of suitable material
and provided with outlet passages for the gas which are inclined towards one
another at a suitable angle and with air passages arranged parallel to the gas outlet
passages for the purpose of ensuring a regular supply of air to the flame substantially
as described.
2. A burner of the kind described in Claim 1 wherein the air passages which are
arranged parallel to the gas passages are formed in shoulders on the body of the
burner, the said shoulders forming screens for protecting the flame from outside air
currents, substantially as described.
3. In a burner of the kind described in the preceding claiming clauses forming
the burner body hollow so as to provide a small gas chamber for compensating for
momentary slight variations in the pressure, substantially as described.
4. The improved acetylene gas burners herein before described and illustrated
respectively in Figures 1, 2, 3 and 4 of the accompanying drawing.
Dated this 15th day of April 1897
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.