Igniting Devices therefor.
Year: 1896

page_text: Igniting Devices therefor.
A communication from SOCIÉTÉ DUBOIS FRÈRES, of Paris, in the Republic of
France, Manufacturers.
I ALFRED JULIUS BOULT of 323 High Holborn, in the County of Middlesex,
Chartered Patent Agent, do hereby declare the nature of this invention to be as
follows:-
The objects of the present invention are the construction of a lamp combined
with an incandescent mantle such as is commonly used for gas burners, and of an
igniting-device therefor.
On the body of the lamp of any suitable shape, is screwed the burner, which
has two parallel tubes containing the wicks; these wicks are in proximity at
their upper ends to an annular chamber into which the wick tubes open. The
upper edge of this chamber is surrounded by the lower edge of the mantle; iu
the centre of the chamber is a bowl into which a ceutral pipe enters, the base
of which is expanded to form a funnel embracing and projecting beyond the two
wick-tubes.
The vapours of oil, heated in the annular chamber by the fact of the above
chamber being near the burner and of the conductivity of its metal walls, pass
therefrom through the lower extremity of a pipe of very small diameter, the said
extremity of which, bent and raised up, fits a central opening made in a diaphragm
closing the oil-chamber which opening is opened or closed by means of a valve,
manipulated from the outside by a key.
A bell covers the funnel aforesaid and embraces, like the said funnel, the wick
tubes having at its top end passages which bring into communication the interior
of the said bell with the lower part of the outline of the annular chamber and of
the said wick tubes.
The lower edge of the bell is cut away circumferentially for a length sufficient
for the passage of the special igniter hereinafter described; to this opening
corresponds another one cut out in the gallery of the burner, for the same purpose.
Two other small lateral symmetrical openings are cut out in the same lower
edge of the bell and are used for the passage of air for the igniter through the
interior of the said bell.
Round the upper edge of the annular chamber is arranged a ring of such outside
diameter, that the lower edge of the mantle closes round it so as to prevent the
admission of non-carburised air into the interior of the said mantle.
The mixture of carburised air feeding the mantle is effected inside the funnel,
then it is led through the central tube into the central bowl where it is heated for
supply to the mantle through the sieve covering that central bowl.
The aspiration of outside air is produced by the fact of the combustible vapours
escaping through the aforesaid small tube under pressure caused in the annular
chamber. At the same time, by the same action the aspiration of combustible
vapours from the reservoir is effected to increase the combustibility of the mixture
by mixing with vapours supplied through the small tube.

page_text: The lamp is lit by means of a special igniting device. This igniting device
consists of a reservoir of sufficient capacity, provided with two branches arranged
parallel and symmetrically and pointing upwards; these tubes or branches contain
wicks, the inner ends of which in the reservoir dip in alcohol or other spirit
whereas their exterior ends can be lighted at the ends of the tubes which are
provided with the openings for the purpose.
These tubes are arranged so that they can be introduced through the openings
of the gallery and of the bell aforesaid in order to close round the tubes and funnel
so as to heat by their flame on each side, longitudinally, the base of the vapourising
chamber for starting the burner and for lighting it as soon as it is properly
started.
The flames for starting and lighting act therefore symmetrically relatively to
the burner and to the outside glass chimney which surrounds the burner and so
heat the glass chimney in an equal and rational manner avoiding its breaking,
which is very often caused by the ordinary way of lighting the burner only on
one side.
Dated this 28th day of January 1896.
BOULT & WADE,
Agents for the Applicant.
improvements in or relating to Incandescent Oil-lamps, and
Igniting Devices therefor.
A communication from SOCIÉTÉ DUBOIS FRÈRES, of Paris, in the Republic of
France.
I, ALFRED JULIUS BOULT formerly of 323 High Holborn, now of 111 Hatton
Garden in the County of Middlesex, Chartered Patent Agent do hereby declare
the nature of this invention and in what manner the same is to be perfornied,
to be particularly described and ascertained in and by the following statement:-
The object of the present invention is the construction of a lamp combined with
an incandescent mantle such as is commonly used for gas burners and of an
igniting-device therefor.
In the accompanying drawing
Figure 1 represents a lamp in elevation in vertical section.
Figure 2 is a perspective view of the burner.
Figures 3, 4 and 5 are detail-views.
By examining these figures the construction of the lamp will be easily
understood.
On the body P of the lamp of any suitable shape, is screwed the burner
represented separately in perspective (Figure 2), which has two parallel tubes T
and T containing the wicks M M; these wicks M M are in proximity at their
upper ends to an annular chamber A, the upper edge of which is surrounded by
the lower edge of the mantle S. In the centre of the central bowl U at its lower
end a central pipe G enters, the base of which is expanded to form a funnel G',
embracing and projecting beyond the two wick-tubes T T'.
The vapours of oil, heated in the chamber A. owing to this chamber being near
the burner S and to the conductivity of its metal walls, pass therefrom through a
pipe D of very small diameter, the lower end of which is bent and turned up, and
fits and corresponds to a central opening F¹ made in the wall F which opening is
opened or closed by means of a valve A manipulated from the outside by a key h¹.
h

page_text: A bell V covers the funnel G' and embraces, like the said funnel, the wick
tubes T T and has at its top end passages V1, V2, which bring into communication
the interior of the said bell V with the lower part of the outline of the chamber A
and of the said wick tubes T T.
The lower edge of the bell V is cut away circumferentially at X for a length
sufficient for the passage of the special igniter hereinafter described; to this
opening X corresponds another one X cut out in the gallery of the burner for the
same purpose.
Two other small lateral symmetrical openings Y are cut out in the lower edge
of the bell V and are used for the passage of air for the igniter through the
interior of the said bell V.
Round the upper edge of the chamber A is arranged a ring Z of such outside
diameter that the lower edge of the mantle B closes round it so as to prevent the
admission of non-carburised air into the interior of the said mantle S.
The mixture of carburised air feeding the mantle is effected inside the funnel G¹
it is then led through the central tube G into the central bowl U, where it is.
heated and ready for supply to the mantle through the sieve S₁ covering the
central bowl U.
The supply or aspiration of atmospheric air is produced owing to the combustible
vapours escaping through the tube D under pressure caused in the chamber A.
At the same time by the same action the aspiration of combustible vapours from
the reservoir is effected to increase the combustibility of the mixture by mixing
with the vapours supplied through the tube D.
The lamp is ignited by means of a special igniting device separately shewn in
Figure 5, and in working position in Fig. 1.
This igniting device consists of a reservoir a of sufficient capacity provided with
two branches bb arranged parallel and symmetrically and extending in an upward
direction these tubes or branches b b contain wicks, the inner ends of which in the
reservoir a dip in alcohol or other spirit their exterior ends being lighted at the
ends of the tubes b b which are provided with the openings for that purpose.
These tubes bb are arranged so that they can be introduced (in the dotted
position shown in Fig. 1) through the openings X and X of the gallery and
of the bell V in order to surround the tubes and funnel T T and G so as to
heat by their flame on each side equally the base of the vaporising chamber A for
starting the burner and for lighting it as soon as it is properly started.
The flames for starting and lighting act therefore together, relatively to the
burner and to the outside glass chimuey which surrounds the burner and so heat
the glass chimney in an equal and gradual manner avoiding its breaking which is
very often caused by the ordinary way of lighting the burner only on one side.
Having now particularly described and ascertained the nature of the said
invention as communicated to me by my foreign correspondent and in what
manner the same is to be performed, I declare that what 1 claim is :-
1. The arrangement of the wick tubes T T forming at the upper end an annular
chamber A which is surrounded by the lower edge of the mantle S, said
chamber A containing a central chamber U having a central conduit G terminating
in a bell or funnel G surrounding the tubes T T a bell V being arranged over
said bell G', communicating by passages V V" with the lower part of the outside
of the chamber A and said tubes T T', and having on its lower edge a recess X
for the passage of an igniter and two other recesses Y for supplying air to said
igniter.
2. The combination with the annular chamber A, of a ring Z surrounding its
upper edge, and a tube D of a very small diameter the upper end of which enters
into the said chamber whilst the lower end, which is curved and is turned upwards
is brought under a central opening in the wall F separating the whole of the
burner from the body P of the lamp, which opening may be closed or opened by
meaus of a flap valve h operated from outside by means of a key h¹.

page_text: 3. In combination with the arrangement described in Claims 1 and 2, the
arrangement of an igniter having two wick-holding ignition tubes b b which are
introduced through the recess X and surround or embrace the parts T T and G
in order to start vaporisation and to light the lamp substantially as described.
4. The combination and arrangement of parts forming a complete incandescent
oil lamp burner and igniting device substantially as described and illustrated in
the drawings.
Dated this 15th day of October 1896
BOULT & WADE,
Agents for the Applicant.