IMPROVEMENTS IN LAMPS FOR BURNING MINERAL OILS, APPLICABLE ALSO TO GAS-BURNERS
Year: 1885

page_text: also to Gas-burners...
I, HERBERT JOHN HADDAN, of 67, Strand, in the City of Westminster, Civil
Engineer, do hereby declare the nature of said Invention for "IMPROVEMENTS
IN LAMPS FOR BURNING MINERAL OILS, APPLICABLE ALSO TO GAS-BURNERS,
a communication to me from abroad by Louis Sepulchre, Manufacturer, of
Herstal-lez-Liège, Belgium, to be as follows:-
The first improvement has for its object to assure a uniform brilliancy of the
flame, above as well as below, and to render the same as homogeneous as possible
by projecting pure heated air in the most efficacious manner, from the interior of
the flame, on the gas in combustion, that is from the base of the flame up to its
extreme end.
In burners with two or three flat wicks, it has been attempted to obtain this
result by means of a slotted cap above the wicks, which, by the solid portion
maintained between the flames, and by the particular shape of this solid portion,
divides the central current of air and projects the same on the ignited gas.
In carrying out the invention I mount on the cap T, figs. 1 to 3, between the
flames, an air-chamber D adapted to receive a part of the central air current and to
distribute the same, after having been heated, through the holes d¹ towards the
flames up to the extreme end of the same, (figs. 1 to 3).
In round burners it has been attempted to attain this object either by means of
a single cap adapted to project the whole central air current towards the gases in
combustion, or by the superposition, at more or less distance, of a second or more
diaphragms of various diameters, or by either of these arrangements in combination
with a cap adapted to throw the exterior air current towards the interior.
The invention as applied to these burners consists in absorbing a part of the
central air current by means of a tube D d adapted to the size and mounted in
the centre of the burner (figs. 8 & 9).

page_text: The part D of this tube D d is perforated at the sides and closed at its upper
extremity. By means of this tube D d the air current is conducted up to a
suitable height, heated to a high temperature, and distributed through the lateral
holes d to all parts of the flame.
Another modification consists in supplying the air for this chamber D through
perforations in the disc d; in this case, the tube d", which serves as an air conduit
and support, is replaced by a solid support. Dis substantially a special air-chamber,
of any suitable shape, which is open towards the base, for sucking in part of the
central air current of the burner. It is closed at its upper extremity, perforated
on the sides towards the flame, and may have a round, angular, straight or pointed
shape.
In the accompanying drawings Figs. 4, 5, 6 and 7 represent several arrangements
in combination with a cap d; these burners may, however, be used without the
caps d; this cap d is soldered on to the tube at the base of the air-chamber D
and serves to spread towards the gases in combustion that part of the air current,
which has not been absorbed by the above described chamber.
This cap
d
may be flat, but it is preferably made concave towards the base, either
conical or round.
The arrangements above described may also be applied to gas burners.
The second improvement consists in a special device for operating the wick
simultaneously from two sides; it has also for its object to ensure its proper working
while maintaining the limited proportions of the burners.
The axle of the key carrics a right and a left hand screw or worm (figs. 10
& 11) which impart motion to two pinions or wormwheels W W. These wheels W W
are soldered to the rods XX which carry the pinions Y Y serving to operate
'the wick.
The plates xx serving to hold and connect the movable parts are fixed to the
tube of the burner.

page_text: Improvements in Lamps for Burning Mineral Oils, Applicable
also to Gas-burners.
I, HERBERT JOHN HADDAN of 67 Strand, in the County of Middlesex, Civil
Engineer, do hereby declare the nature of this invention, a communication to me
from abroad by Louis Sepulchre, Manufacturer, of Herstal-lez-Liége, Belgium,
and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:—
The first improvement has for its object to assure a uniform brilliancy of the
Bame above as well as below and to render the same as homogenous as possible by
projecting on the gas in combustion pure heated air, in the most efficacious manner,
from the interior of the flame, that is from the base of the flame up to its
extreme end.
i
In burners with two or three flat wicks, it has been attempted to obtain this
result by means of a slotted cap above the wicks, which, by the solid portion
maintained between the flames and by the particular shape of this solid portion
divides the central current of air, and projects the same on the ignited gas.
In carrying out this invention I mount on the cap T, Figs. 1 to 3, between the
flames, an air chamber D, adapted to receive a part of the central air current and
to distribute the same, after having been heated, through the holes d¹ towards the
flames up to the extreme end of the same (see figs. 1 to 3 of the drawings filed with
the provisional specification).
In round burners it has been attempted to attain this object either by means of
a single cap adapted to project the whole central air current towards the gases in
combustion, or by the superposition, at more or less distance, of a second or more
diaphragms of various diameters, or by either of these arrangements in combination
with a cap, adapted to throw the exterior air current towards the interior.
The invention as applied to these burners consists in absorbing a part of the
central air current by means of a tube D d adapted to the size and mounted in
the centre of the burner (figs. 8 and 9). The part D of this tube D " is perforated
at the sides and closed at its upper extremity.
By means of this tube D d the air current is conducted up to a suitable height,
heated to a high temperature and distributed through the lateral holes d¹ to all
parts of the flame.
Another modification consists in supplying the air designed for this chamber D
through perforations in the disc d; in this case, the tube d", which serves as an
air conduit and support, is replaced by a solid support.
D is substantially a special air chamber, of any suitable shape, which is open
towards the base for sucking in part of the central air current of the burner. It is
closed at its upper extremity, perforated on the sides towards the flame and may
have a round, angular, straight or pointed shape.
In the drawings filed with the provisional specification Figs. 4, 5, 6 and 7
represent several arrangements in combination with a cap d; this cap d is soldered
on to the tube d" at the base of the air chamber D and serves to spread towards

page_text: the gases in combustion that part of the air current, which has not been absorbed
by the above described chamber. This cap d may be flat, but it is preferably made
concave towards the base, either conical or round.
The arrangements above described may also be applied to gas burners.
The second improvement consists in a special device (movement) for operating
the wick simultaneously from two sides; it has also for its object to ensure its
proper working, while maintaining the limited proportions of the burners.
The axle of the key carries a right and a left hand screw or worm, (figs. 10
& 11) which impart motion to two pinions or worm wheels W W. These wheels W.W.
are soldered to the rods XX, which carry the pinions Y Y serving to operate the
wick. The plates X X serve to hold and connect the movable parts, and they are
fixed to the tube of the burner.
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. In mineral oil lamps having a round wick or several flat wicks, a special air
chamber D, the sides of which facing the flame are perforated for the purpose of
distributing over the entire height of the flame, the air supplied by the central
current, and after the said air has been heated; in combination (of this air
chamber D) with a button or disc d.
2. The application of the arrangements, specified under No 1, to gas burners.
3. A mechanism for setting in motion the wick, comprising a key provided with
two worms (one right and one left), a pair of corresponding worm wheels, W W
adapted to be set in motion by the said worms and carrying shafts X X, on which
are mounted the driving pinions Y Y.