Year: 1898

page_text: про
I, FRANCIS WINDham, of 73, Queen Victoria Street, in the County of Middlesex,
Engineer, do hereby declare the nature of this invention to be as follows;-
This invention relates to the burning of acetylene gas and the construction of
burners therefor.
In carrying out the invention I form the burner in two parts, a nozzle with
a relatively small hole through which the gas escapes from the supply pipe,
and a cap with a relatively large hole through which the gas passes
to be burnt, and one or more openings through which atmospheric air is allowed
to enter the space between the cap and the nozzle. Preferably I make the
nozzle with a flange or collar against which the cap can be pressed home, and
reduce its end so as to form a chamber between that portion of the cap when
the latter is applied. The cap may be split as well as provided with holes if
desired and other means may be employed for the admission of the air.
The size of the orifices and of the parts generally may be varied according to
the circumstances of the application. I do not bind myself to any particular
sizes or proportions of sizes but I have obtain excellent results by making the
hole in the cap through which the gas passes to be burnt about four times the
area of the hole in the nozzle through which the gas enters the cap and the distance
between the end of the nozzle and the interior of the cap about three times the
diameter of the larger hole. The previously mentioned flange or collar is a
convenient means of securing the correct position of the cap when placed on
the burner, but I may adopt other means to this end if preferred.
The arrangement above described would produce a rat-tail flame, if it be desired
with a similar burner to produce a fish-tail flame it may be done by forming
two holes in the nozzle and two in the cap.
Although I do not bind myself to this construction only I find that it is advan-
tageous to make the issuing hole in the nozzle in the axial line of the hole in
the cap through which the gas passes to be burnt, so that I may utilise the
momentum of the issuing stream to suck the air with it so as to obtain a suitable
burning mixture.
For a batswing burner I prefer to make two nozzles substantially as previously
described and set them at a suitable angle, say for example 90°; each burner
and cap is constructed substantially as previously described, the resulting flame
being a wide flat flame.
The great difficulty hitherto with burners for acetylene gas has been that they
clog up in a very short time with the impurities in the gas, which is a greater
drawback than with ordinary coal gas burners as the holes are relatively some-
what smaller.
By my invention I first of all avoid the difficulty of the clogging which I find
in practice does not occur, and in the second place even if the clogging did occur
I can easily remove the cap and clean that out while the small hole in the nozzle
being protected from the flame never clogs up at all.

page_text: Another advantage is that I am able to use metal for my burners which I
find gives better results than steatite or other materials which have been used
for this purpose.
When desired and especially for heating purposes I may use more than one
cap but I prefer to make the holes in each succeeding cap of larger diameter
than that of the preceding one. All the caps may be provided with means for
the introduction of air. It is desirable in all cases that the cap should fit suf-
ficiently tightly upon the nozzle to prevent the entrance of air excepting by the
proper channels.
The holes
Generally speaking I prefer to make these burners and caps round but I wish
it to be understood that I may make them any other suitable shape.
also may be round or they may be slits or of any other desired form.
I have above described the best way known to me at present of carrying out
my invention but I wish it to be understood that the details can be greatly
modified without departing from the spirit of the invention. As an instance of
this I will describe another burner from which I have obtained very excellent
results. This consisted of a three-armed piece of metal, one arm forming the
branch by which the gas was supplied to the interior and the other two being
solid but having a saw-cut down each arm and suitable holes drilled through
the outer plate formed by the cut and into the remaining portion of the arm
where it joins the portion which is hollow to supply the gas. The two jets
thus produced escape at an angle of about 90° to each other and where they
meet they form a flat flame as will be well understood.
This burner is an excellent one but does not possess the same facilities for
cleaning as the cap construction first above described, nevertheless it is a perfectly
practical and useful burner.
Another burner from which I have obtained good results is substantially the
same as that first above described but instead of using a cap I use a flat plate,
so placed that the hole in it was in the axial line of the hole in the nozzle so
that the jet of gas from the nozzle acting as in the other cases like an injector
sucked in the necessary air and fed the flame on the other side of the plate.
However this burner is hardly so convenient as the one with the cap and the
hole in the nozzle being to some extent exposed is more likely to be clogged up
with dust or the like.
Dated this 11th day of May 1898
BOULT & WADE,
Agents for the Applicant.
I, FRANCIS WINDHAM, of 73, Queen Victoria Street, in the County of Middlesex,
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 the burning of acetylene gas and the construction of
burners therefor.
In carrying out this invention I form the burner in two parts, a nozzle with
a relatively small hole through which the gas escapes from the supply pipe,
and a cap with a relatively large hole through which the gas passes
to be burnt, and one or more openings through which atmospheric air is allowed
to enter the space between the cap and the nozzle. Preferably I make the

page_text: nozzle with a flange or collar against which the cap can be pressed home, and
reduce its end so as to form a chamber between it and the cap when the latter
is applied.
In this chamber the air is heated before passing out with the gas through the
larger hole. The cap may be split as well as provided with holes, if desired,
and other means may be employed for the admission of the air.
The size of the orifices and of the parts generally may be varied according
to the circumstances in which the burners are used. I do not bind myself to
any particular sizes or proportions of sizes, but I have obtained excellent results
by making the hole in the cap through which the gas passes to be burnt, about
four times the area of the hole in the nozzle through which the gas enters the
cap, and the distance between the end of the nozzle and interior of the cap
about three times the diameter of the larger holes. The previously mentioned
flange or collar is a convenient means of securing the correct position of the cap
when placed upon the burner, but may adopt other means to this end if
preferred.
It is found that in burners constructed according to this invention metal may
be used and gives better results than steatite or other materials which have been
used in somewhat similar burners.
When desired, and especially for heating purposes, I may use more than one
cap but I prefer to make the outlet hole in each succeeding cap of larger
diameter than that of the preceding one. All the caps may be provided with
means for the introduction of air, and it is desirable in all cases that the cap
should fit sufficiently tightly upon the nozzle to prevent the entrance of air except-
ing by the proper channels.
Generally speaking I prefer to make these burners and caps round, but it is
to be understood that I may make them of any other suitable shape. The holes
also may be round or they may be in the form of slits or of other convenient shape.
In the accompanying drawings,
Figures 1, 3, 5 and 7 are sectional elevations of various burners all according
to this invention, and
Figures 2, 4, 6 and 8 are plans of the burners shown in Figures 1, 3, 5 and 7,
respectively, parts being removed or sectioned for the sake of clearness.
Like letters indicate like parts throughout the drawings.
In the construction illustrated in Figures 1 and 2, A is a cap so constructed
that it fits gas-tight upon the pipe through which the acetylene is supplied; it
is provided with a small orifice A¹ at the top and a flange or shoulder A³ at the
bottom. A second cap B having an orifice B₁ fits over the cap A so as to leave
an air space between their upper portions. The cap B is provided with holes B³
through which air is admitted.
Figures 3 and 4 show a ring burner according to this invention; in this case
the orifices A' are formed in an annulus D in communication with the supply
pipe, and the orifices B are made in an annular cap E fitting over the annulus D.
The orifices B are not vertically above the openings A' but are so arranged that
the jets are directed towards a common centre, and thus a cup-shaped flame is
obtained. Openings B are provided in the annular cap E for the admission of
air.
When a flame of very great brilliancy is desired, the burner illustrated in
Figures 5 and 6 is very advantageous. Here there are two concentric annuli D D¹
and two annular caps E E¹, the orifices A' B' in one set being inclined say at
an angle of approximately 90° to the corresponding orifices in the other set, so
that an annular flame of great power is obtained.
Figures 7 and 8 illustrate a burner suitable for heating purposes. It is sim-
ilar in construction to the burner illustrated in Figures 1 and 2, but is provided
with an additional cap B³ having an orifice B and holes 135 for the admission
In this burner the orifice B in the outer cap B³ is preferably larger
ue orifice B¹ in the cap B.
of
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page_text: 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:-
The complete burner for acetylene gas substantially as described and illus-
trated in Figures 1 and 2, or Figures 3 and 4, or Figures 5 and 6 or Figures 7
and 8 of the accompanying drawings.
Dated this 9th day of March 1899.
F. WINDHAM,
Boult & Wade,
Agents for the Applicant.