Improvements in Igniting-apparatus for Gas-lamps.
Year: 1895

page_text: Date of Application, 10th Jan., 1895
Complete Specification Left, 11th Feb., 1895-Accepted, 30th Mar., 1895
PROVISIONAL SPECIFICATION.
Improvements in Igniting-apparatus for Gas-lamps.
I, PAUL GRÖBBELS, of Weimar, in the Empire of Germany, Managing
Engineer to the Town Gas and Water Works, do hereby declare the nature of this
invention to be as follows:-
Igniting-apparatus according to this invention enables an almost completely
closed gas-lamp to be lit without the necessity of opening the lamp. It possesses the
peculiarity that a mixture of gas and air is produced and employed for generating
the igniting flame. This mixture is incapable of illuminating but is sufficiently
inflammable and is capable of burning continuously in the interior of an igniting-
tube thus causing the flame to travel along in the interior thereof. The igniting-
apparatus thus acts much more effectually and safely than igniting-devices which
have hitherto been employel for producing ignition by means of a "running flame
and in which the gas does not burn in the interior of the igniting-tube, but becomes
capable of burning only in consequence of its escape through numerous small holes
and coming thus into contact with atmospheric air.
In the accompanying illustrative drawings,
"
Fig. 1 is a sectional elevation showing igniting-apparatus according to this
invention applied to a street-lamp,
Fig. 2 is a detail-view to which reference will hereinafter be made, and
Fig. 3 is an elevation of the apparatus taken at right-angles to Fig. 1.
The igniting-apparatus comprises a pipe b, which branches off on one side from
the main lamp-cock a and carries the igniting-cock c, which is provided with only
a small opening for the passage of gas. The pipe 6 also carries an open and down-
wardly expanding funnel d arranged around the outlet-opening of the said pipe.
Fig. 2 is a view of this funnel taken from below.
The fine stream of gas that escapes through the cock c, when opened, draws into
the funnel d a suitable quantity of air to produce a mixture adapted to burn with a
non-luminous flame.
The igniting-tube d¹ is provided with a series of small holes ff¹ commencing a
little above the funnel d and continuing almost as far as its upper end, which is
open and is situate just below the gas-outlet of the burner g. The lower holes f" of
the igniting-tube d' are surrounded by a funnel e which is arranged on one side
and the object of which is to prevent the lighting jet or lamp of the lamp-lighter
from becoming extinguished in windy weather. The upper part of the funnel e
extends through the bottom of the lamp so as to prevent the bottom plate from
being cracked by flames or hot gases escaping laterally from the igniting-tube.
In lighting a lamp with apparatus of the kind described the lamp-lighter first
opens the cock c and introduces his igniting jet or lamp from below into the
funnel e.
The gas, in passing through the igniting-cock c, draws a suitable quantity
of air through the funnel d, which becomes intimately mixed with the gas.
portion of the mixture thus produced passes out through the lower holes fi of the
igniting-tube d¹ and becomes ignited. The flame thus generated strikes into the
mixture of gas and air in the interior of the igniting-tube and causes the explosion
of the said mixture, thereby forcing the flame through the small holes f, which
thus serve to weaken the force of the explosive ignition of the gaseous mixture
inside the igniting-tube. A flame several centimetres in length still remains, and
passes out through the upper opening of the igniting-tube d¹. The upward ignition
A

page_text: inside the igniting-tube, as just described, takes place almost instantaneously. The
lamp-lighter now opens the main lamp-cock a to allow gas to issue from the
burner g; this being at once ignited by the flame proceeding from the tube d³, all
that remains to be done is to shut the iguiting-cock c.
Dated this 10th day of January 1895.
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
CUMI LEIM DIMUIFICATION.
Improvements in Igniting-apparatus for Gas-lamps.
I, PAUL GRÖBBELS, of Weimar, in the Empire of Germany, Managing
Engineer to the Town Gas and Water Works, 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 :-
Igniting-apparatus according to this invention enables an almost completely
closed gas-lamp to be lit without the necessity of opening the lamp. It possesses
the peculiarity that a mixture of gas and air is produced and employed for
generating the igniting-flame. This mixture is incapable of illuminating but is
sufficiently inflammable and is capable of burning continuously in the interior of
an igniting-tube, thus causing the flame to travel along in the interior thereof.
The igniting-apparatus thus acts much more effectually and safely than igniting-
devices which have hitherto been employed for producing ignition by means of a
running flame" and in which the gas does not burn in the interior of the igniting-
tube, but becomes capable of burning only in consequence of its escape through
numerous small holes and coming thus into contact with atmospheric air.
66
Referring to the illustrative drawings filed with my Provisional Specification
Fig. 1 is a sectional elevation showing igniting-apparatus according to this
invention applied to a street-lamp.
Fig. 2 is a detail-view to which reference will hereinafter be made, and
Fig. 3 is an elevation of the apparatus taken at right angles to Fig. 1.
The iguiting apparatus comprises a pipe b which branches off on one side from
the gas supply pipe below the main lamp-cock a and carries the igniting-cock c,
which is provided with only a small opening for the passage of gas. The pipe b
also carries an open and downwardly expanding funnel d arranged around the
outlet-opening of the said pipe.
Fig. 2 is an underside view of this funnel. The fine stream of gas that escapes
through the cock c, when opened, draws into the funnel d a suitable quantity of
air to produce a mixture adapted to burn with a non-luminous flame. The igniting-
tube d is provided with a series of small holes f, f¹ commencing a little above the
funnel d and continuing almost as far as its upper end, which is open and is situate
just below the gas-outlet of the burner g. The lower holes ff of the igniting-
tube d¹ are surrounded by a funnel e which is arranged on one side and the object
of which is to prevent the lighting jet or lamp of the lamp-lighter from becoming
extinguished in windy weather. The upper part of the funnel e extends through
the bottom of the lamp so as to prevent the bottom-plate from being cracked by
flames or hot gases escaping laterally from the igniting-tube.
In lighting a lamp with apparatus of the kind described the lamp lighter first
opens the cock c and introduces his igniting jet or lamp from below into the funnel e.
The gas in passing through the igniting cock c, draws a suitable quantity of air
through the funnel d, which becomes intimately mixed with the gas. A portion of
the mixture thus produced passes out through the lower holes f' of the igniting
tube d' and becomes ignited. The flame thus generated strikes into the mixture
of gas and air in the interior of the igniting-tube and causes the explosion of the

page_text: said mixture thereby forcing the flame through the small holes f, which thus serve
to weaken the force of the explosive ignition of the gaseous mixture inside the
igniting-tube. A flame of several centimetres in length still remains and passes
out through the upper opening of the igniting-tube d. The upward ignition inside
the igniting-tube as just described, takes place almost instantaneously. The lamp-
lighter now opens the main lamp-cock a to allow gas to issue from the burner g;
this being at once ignited by the flame proceeding from the tube d', all that remains
to be done is to shut the igniting-cock c.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what I
claim is :-
An igniting apparatus for gas lamps, comprising a pipe b brauching from the
gas supply pipe at a point below the gas cock a and provided with an igniting
tap c, a funnel d provided with air-inlet openings and arranged to surround the
igniting tap, an igniting-tube d' arranged adjacent to or connected with the said
funnel d and provided with fine holes ff, and a funnel e arranged over the lower
holes, the whole constructed arranged and operating substantially as hereinbefore
described for the purposes specified.
Dated this 11th day of February 1895.
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.