Improved Burner and Appliances for Supporting Incandescent Gas Mantles.
Year: 1895

page_text: Date of Application, 11th Dec., 1895
Complete Specification Left, 21st Aug., 1896-Accepted, 26th Sept., 1896
PROVISIONAL SPECIFICATION.
Improved Burner and Appliances for Supporting Incandescent Gas
Mantles.
I, JOSEPH DE BROUWER, Manager of the Bruges Gas Works, at Bruges,
Belgium, do hereby declare the nature of my said invention to be as follows:-
This invention relates to
1. A particular construction of burner for incandescent gas lighting.
2. A process for forming the mantle exclosed or encased with platinum wire.
3. The employment of platinum wire baskets and envelopes or bands of any
shape, for containing, supporting, carrying or strengthening the mantles of
incandescent gas burners.
The burner is composed :-
1. Of a metal cylinder terminated at its upper part by a cap of refractory
material perforated with numerous holes of small diameter (2 to 3 millimetres),
under the cap one or more metal or wire screens may be fitted; the lower open
end of the cylinder adapts itself to the top of the blowpipe or Bunsen burner with
forced air supply, forming the subject of my prior application for Patent No. 20697
of 1895, in connection with its application to burners for incandescent mineral
substances.
2. Of a metal ring sliding on the cylinder of the burner which can be fixed at
any desired height by a set screw or other device.
3. Of a mantle of mineral substances of the kind employed in the Auer and
other similar incandescent gas burners. This mantle is enclosed in an envelope or
basket of platinum wire, the two, viz. the mantle and its supporting envelope being
in contact with each other.
The platinum wire basket rests upon, and can be attached by any kind of device
to the burner ring.
This burner when used does not require any kind of chimney either of glass or
mica, as with ordinary incandescent gas burners, but globes may be employed if
desired; they are not however an integral part of my invention and I therefore
make no further reference to the mode of using them.
The essential feature of my invention is, the mantle of mineral substances
adapted to a supporting basket of platinum wire, and I will now describe the
manner in which these mantles are formed.
I take an envelope or basket of platinum wire, its size being in proportion to
that of the mantle which can by a little experience be ascertained for each
particular case. The mantle before it is calcined is suspended by its upper part
and in the centre of the basket.
The mantle is then calcined in the usual way, care being taken to keep the base
of the mantle well open.
When this first operation is complete, the mantle with its basket is placed over a
burner similar to the one above described but with the ring removed, and the flame is
kept well in the centre of the mantle which is then lowered into the flame and then
gradually raised, the strength of the current being increased at the same time.
The high temperature of the flame and the strength of the current operate
together on the incandescent substances in fusion and swell or expand the mantle,
and its walls thus adapt themselves to the basket, taking the shape of the latter,

page_text: the operation being then terminated. The parts of the mantle below the basket
are cut off and the mantle is fitted to the burner ring.
The process of manufacture above described effects the following advantages.
1. The mantle formed under a high temperature has a much higher resisting
strength than those as ordinarily made, the mineral substances being more
agglomerated, independently of the platinum wire basket.
2. The mantle enclosed in its basket partakes of all the resistance of the latter,
and specially when in use and brought to high temperature it resists the action of
the current and the flame of the atmospheric burner with forced air supply;
whereas without the platinum wire basket it would be liable to separate itself from
its position over the burner, or to swell or get out of shape and finally to
break up.
3. The mantle enclosed in the basket is supported by it and does not require
any other support or prop, and as the basket can be fixed to the ring of the burner
it may be placed in any position either vertical, inclined, horizontal, upside
down, etc., which is entirely novel in this kind of lighting.
Dated 11th December 1895.
H. GARDNER,
Patent Agent, 166 Fleet Street, London,
Agent for J. De Brouwer.
.
Improved Burner and Appliances for Supporting Incandescent
Gas Mantles.
I, JOSEPH DE BROUWER, Manager of the Bruges Gas Works, at Bruges,
Belgium, 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 improved burner and appliances for supporting
incandescent gas mantles.
The burner is composed :-
1. Of a metal cylinder terminated at its upper part by a cap of refractory
material perforated with numerous holes of small diameter (2 to 3 millimetres),
under the cap one or more metal or wire screens may be fitted; the lower open
end of the cylinder adapts itself to the top of the blowpipe or Bunsen burner with
forced air supply, forming the subject of my prior Application for Patent
No. 20697 in connection with its employment to burners for incandescent mineral
substances.
2. Of a metal ring sliding on the cylinder of the burner which can be fixed at
any desired height by a set screw or other device.
3. Of a mantle of mineral substances of the kind employed in the Auer and
other similar incandescent gas burners. This mantle is enclosed in an envelope or
basket of platinum wire, the two, viz. the mantle and its supporting envelope
being in contact with each other.
The platinum wire basket rests upon, and can be attached by any kind of device
to the burner ring.
Figure 1 of the drawings shows the various constituent parts of the burner
nozzle. a is the cylinder. b, the cap. c, the ring. d, the mantle, and e the
basket of platinumn wire.
This burner when used does not require any kind of chimney either of glass or
mica, as with ordinary incandescent gas burners, but globes may be employed if
desired; they are not however an integral part of my invention, and I therefore
make no further reference to the mode of using them.

page_text: The essential feature of my invention is, the mantle of mineral substances.
adapted to a supporting basket of platinum wire, and I will now describe the
manner in which these mantles are formed.
I take an envelope or basket of platinum wire, its size being in proportion to
that of the mantle which can by a little experience be ascertained for each
particular case. The mantle before it is calcined is suspended by its upper part
and in the centre of the basket (see Figure 2 of the drawings). The mantle is
then calcined in the usual way, care being taken to keep the base of the mantle
well open. When this first operation is complete, the mantle with its basket is
placed over a burner similar to the one above described but with the ring removed
(see Figure 3 of the drawings), and the flame is kept well in the centre of the
mantle which is then lowered into the flame and then gradually raised, the strength
of the current being increased at the same time.
The high temperature of the flame and the strength of the current operate
together on the incandescent substances in fusion and swell or expand the mantle,.
and its walls thus adapt themselves to the basket, taking the shape of the latter,
the operation being then terminated.
The parts of the mantle below the basket are cut off and the mantle is fitted to.
the burner ring, as shown in Figure 1.
The process of manufacture above described effects the following advantages:-
1. The mantle formed under a high temperature has a much higher resisting
strength than those as ordinarily made, the mineral substances being more
agglomerated, independently of the platinum wire basket.
2. The mantle enclosed in its basket partakes of all the resistance of the
latter, and specially when in use and brought to high temperature it resists the
action of the current and the flame of the atmospheric burner with forced air
supply; whereas without the platinum wire basket it would be liable to separate
itself from its position over the burner, or to swell or get out of shape and finally
to break up.
3. The mantle enclosed in the basket is supported by it and does not require
any other support or prop, and as the basket can be fixed to the ring of the
burner it may be placed in any position either vertical, inclined, liorizontal, upside
down, etc. which entirely novel in this kind of lighting.
Having now particularly described and ascertained the nature of this inven--
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The general construction of the burner for incandescent gas lighting.
2. The process for forming the mantle enclosed or encased with platinum.
wire.
3. The employment of platinum wire baskets and envelopes or bands of any
shape, for containing, supporting, carrying, or strengthening the mantles of
incandescent gas burners.
The 21st day of August 1896.
H. GARDNER,
Patent Agent, 166 Fleet Street, London,
Agent for the said Joseph De Brouwer.