Improvements relating to Recuperative Gas Lamps.
Year: 1898

page_text: Date of Application, 21st Sept., 1898
Complete Specification Left, 17th June, 1899-Accepted, 2nd Sept., 1899
PROVISIONAL SIECIFICATION.
Improvements relating to Recuperative Gas Lamps.
ALEXANDER OGILVIE BROWN, and WILLIAM ANDREW GIFFORD ALLEN, both of
the Lighting Corporation, Limd., No. 4, Bloomsbury Street, in the County of
London, Lamp Manufacturers, do hereby declare the nature of this invention
to be as follows:-
This invention has for its objects improvements in recuperative gas lamps
or lanterns, provided with inverted gas burners, and relates to improvements
for heating the air, whereby the illuminating power of the gas is greatly increased,
the construction simplified, and the manufacture of the said lamps greatly
cheapened.
The improvements consist in the recuperative chamber, which is formed in
one piece with radial passages or ducts for the admission of cold air. These
currents of cold air in their passage become initially heated and are intercepted
by a cylindrical partition which causes the air so heated to ascend when it
becomes more intensely heated, and is then drawn through ducts in the cylin-
drical partition from which it decends to the burner in a highly heated state
and intermingles with the inflowing gas.
Dated this Twentieth day of September, One thousand eight hundred and
ningt sicht
Improvements relating to Recuperative Gas Lamps,
ALEXANDER OGILVIE BROWN, and WILLIAM ANDREW GIFFORD ALLEN, both of
the Lighting Corporation, Limd., of No. 4, Bloomsbury Street, in the County of
London, Lamp Manufacturers, 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 has for its objects improvements in recuperative gas lamps
or lanterns, provided with inverted gas burners, and relates to improvements
for heating the air whereby the illuminating power of the gas is greatly increased,
the construction simplified, and the manufacture of the said lamps greatly
cheapened.
The improvements consist in the recuperative chamber, which is formed in
one piece with radial passages or ducts for the admission of cold air. These

page_text: currents of cold air in their passage become initially heated and are intercepted
by a cylindrical partition which causes the air so heated to ascend when it
becomes more intensely heated, and is then drawn through ducts in the cylin-
drical partition from which it decends to the burner in a highly heated state
and intermingles with the inflowing gas.
In order that our said improvements and the manner of performing the same
may be properly understood, we hereinto append an explanitory sheet of draw-
ing, on the several figures of which corresponding parts are marked with the
same letters of reference.
Fig. 1, is a part elevation, and part vertical section of a recuperative gas
lamp. Fig. 2, is a horizontal section taken on the line, a, b, Fig. 1. Fig. 3,
is a cross section of one of the air passages made in accordance with and con-
stituting part of our improvements.
The lamp illustrated in Fig. 1 is of the usual form or class of lamp now in
use, and represents the air passages, the external and internal shape of which
will be better understood by reference to Fig. 3; the oblong shape of which
gives a greater heating surface to the inflowing air in its passage to the recupera-
tive chamber than has hitherto been employed. The heated products from the
flame pass through the openings formed by the passages A to the chimney and
in their passage impart heat to the inflowing air:-
It will be observed in Fig. 1, that we have adopted a cylindrical partition B³
which extends to the top of the heating chamber, where ducts or passages are
formed. The air in its passage through the ports A, is intercepted by B³, and
is drawn upward, and in its passage becomes more intensely heated before
decending to the flame where it intermingles with the inflowing gas producing
an intense white light.
In our improvements we have found it less expensive to cast and manufacture
the parts marked B: B1: B2: and B3 all in one piece, we also attain a reduction
in the gas consumption, an increased steadiness of flame, and an increased
brilliancy of light.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that
what we claim is :- -
1st. Recuperative gas lamps, the heating chamber the hot air nozzle or cylinder
and flange cast in one piece substantially as described.
2nd. Recuperative gas lamps, the radial air passages of a hollow, oblong or
similar form in section, substantially as and for the purpose hereinbefore described
and shown in Fig. 1, 2. 3, upon the annexed sheet of drawings.
Dated this Sixteenth day of June, One thousand eight hundred and
ninety-nine.
ALEXANDER OGILVIE BROWN.
WILLIAM ANDREW GIFFORD ALLEN.