Improvements in Venilators for the Chimneys of Incandescent Gas and similar Lamps.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Venilators for the Chimneys of Incandescent Gas
and similar Lamps.
I, WILHELM HÖRNER, Manufacturer, of Sternstrasse, Barmen, in the Empire
of Germany, do hereby declare the nature of this invention to be as follows:-
This invention for improvements in ventilators for the chimneys of incan-
descent and similar lamps relates to a device for protecting incandescent mantles
used in gas lamps; the construction of the device being such, as to prevent any
foreign matter from finding its way into the chimney by securing a perfect
closing of the chimney; and to admit of the protecting cover being retained
on the chimney during the operation of lighting the lamp.
The invention is shown in the accompanying drawing, in which,
Fig. 1 represents a sectional elevation in perspective, and Fig. 2 a sectional
elevation.
The protecting device essentially consists of the support a and the protecting
cover b.
The support a is formed by a bulged hollow ring, to which a perforated
gallery c is fixed, which, on the one hand, admits of the protecting device being
put on the chimney and on the other hand allows of a sufficient supply of
air passing to the burner. Some of the perforated parts are constructed
in form of flaps d, which being bent inwards into the inner ring circle, act upon
the edge of the chimney, when the protecting device is put in place and thus
secure the latter in its proper position.
At the upper internal ring-circle of the support or at other suitable places;
noses e are arranged which serve as brackets for holding the protecting plate .
These brackets or holders e pass through slots, provided in said protecting.
plate and are bent down in the latter in such a manner, that the protecting
plate can be freely moved. The shape of the brackets or holders e (see Fig. 2)
is such as to enable the protecting plate to rise under the pressure of the gas,
acting thereon, when the lamp is ignited.
For producing the protecting plate any material light in weight, incombustible
and capable of being formed in plates, may be employed. The size of the pro-
tecting plate so corresponds to the inner diameter of the hollow ring, that be-
tween the edge of the plate and the ring, a free space f is left, which ensures
the free escape of the gas.
The method of using this invention is as follows:-
The protecting device is placed on the top edge of the chimney, so that the
gallery surrounds the outer chimney in such a manner, that the outer air retains
a free access to the gas burner by the perforations hereinbefore referred
The flaps d prevent the protecting device from being thrust down too far.
The volume of air, admitted, can be increased by perforating the pro-
tecting plate like a sieve in such a manner that the constituent holes are just
to.

page_text: large enough to enable the air to freely pass through without affording passage
to foreign matter, so that, in spite of these perforations, the character of the
protecting plate is not impaired.
On lighting the lamp the protecting device remains in its place, the gas and
air mixture leaves the hollow ring a in the direction, indicated by the arrow,
(Fig. 1) collects itself above the protecting plate 6 and is ignited above the latter
by a burning match. The flame strikes through the channel, formed by the
hollow ring, arrives in the interior of the chimney, and ignites the gas at the
burner-mouth.
The protecting-plate 6 may simultaneously serve as a support or bracket for 1
any appropriate automatic igniting device.i
COMPLETE SPECIFICATION.
Improvements in Ventilators for the Chimneys of Incandescent Gas
and similar Lamps.
J.
1...
1.1.4
I, WILHELM HÖRNER, Manufacturer, of Sternstrasse, Barmen, in the Empire
of Germany, 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 for improvements in ventilators for the chimneys of incan-
descent and similar lamps relates to a device for protecting incandescent mantles
used in gas lamps; the construction of the device being such, as to prevent any
foreign matter from finding its way into the chimney by securing a perfect
closing of the chimney; and to admit of the protecting cover being retained
on the chimney during the operation of lighting the lamp.
The invention is shown in the accompanying drawing in which,
Fig. 1 represents a perspective view in section, and Fig. 2 a sectional elevation.
The protecting device essentially consists of the support a and the protecting
cover b.
The support is formed by a bulged hollow ring, to which a perforated
gallery is fixed, which, on the one hand, admits of the protecting device being
put on the chimney, and, on the other hand allows of a sufficient quantity of
air passing through the chimney. Some of the perforated parts are constructed
in form of flaps d, which being bent inwards into the inner ring circle, act upon
the edge of the chimney, when the protecting device is put in place .and thus
secure the latter in its proper position:
At the upper internal ring-circle of the support a or at other suitable places,
noses e are arranged which serve as brackets for holding the protecting plate b.
These brackets, or holders e pass through slots, provided in said protecting
plate band 'are bent down in the latter in such a manner, that the protecting
plate can be freely moved. The shape of the brackets or holders e (see Fig. 2)
is such as to enable the protecting plate to rise under the pressure of the gas,
acting thereon, when the lamp is ignited.
For producing the protecting plate any material light in
and capable of being formed in plates, may be employed.
tecting plate só corresponds to the inner diameter of the
weight, incombustible
The size of the pro-
hollow ring, that be-

page_text: tween the edge of the plate and the ring, a free space f is left, which ensures
the free escape of the gas.
The method of using this invention is as follows:-
The protecting device is placed on the top edge of the chimney, so that the
gallery c surrounds the outer chimney in such a manner, that the outer air retains
a free access to the chimney passing out by the perforations hereinbefore referred
to. The flaps d prevent the protecting device from being thrust down too far.
The circulation of air, in the chimney, can be increased by perforating the pro-
tecting plate like a sieve in such a manner that the constituent holes are just
large enough to enable the air to freely pass through without affording passage
to foreign matter, so that, in spite of these perforations, the character of the
protecting plate is not impaired.
On lighting the lamp the protecting device remains in, its place, the gas and
air mixture leaves the hollow ring a in the direction indicated by the arrow,
(Fig. 2) collects itself above the protecting plate 6 and is ignited above the latter
by a burning match. The flame strikes through the channel, formed by the
hollow ring, arrives in the interior of the chimney, and ignites the gas at the
burner-mouth.
The protecting plate 6 may simultaneously serve as a support or bracket for.
any appropriate automatic igniting device.
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 improved protecting device for incandescent gas mantles, characterised
by a hollow ring a, furnished with a perforated gallery c, which serves as carrier
for an incombustible protecting plate b movably seated in the same, and which
ring is arranged on the upper edge of the chimney in such a manner, that the
circulation of air and gas is ensured by the perforations in the gallery c and
the hollow shape of the ring.
Dated this 21st day of October 1898
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.