IMPROVEMENTS IN GAS LAMPS
Year: 1882

page_text: LETTERS PATENT to Isidore Spielmann of No 2 Westbourne Terrace in
the County of Middlesex for an Invention of IMPROVEMENTS IN GAS
LAMPS
PROVISIONAL SPECIFICATION left by the, said Isidore Spielmann at the
Office of the Commissioners of Patents on the 21st September 1882.
【་
ISIDORE SPIELMANN of N° 2 Westbourne Terrace in the County of Middlesex
IMPROVEMENTS IN GAS LAMPS"
My invention relates to a construction and arrangement of gas lamp wherein
the gas and air supplying the burners are highly heate! by the flame which is
thus rendered more powerful for illumination. Around a central chimney I fix
a horizontal grating or disc of perforated metal the circular exterior of which is
an annular tube supplied with gas by branch tubes from a pipe descending the .
chimney. From this annular tube a number of small tubes project radially inwards
and inclined somewhat downwards, and from these the gas issues forming flames
directed nearly horizontally towards the chimney. Over these flames is fixed
a disc which may be of metal or of porcelain or other refractory material which
acts as a reflector of light downwards and as a deflector of the air towards the
roots of the flames. Under the gas tubes is fixed another air deflector nearly parallel
to the tubes but having its inner lip turned upwards. Above the grating is fixed
a casing with a lip projecting downwards outside the exterior periphery of the.
grating. A glass of hemispherical or other suitable shape is fixed to the outer
edge of the grating or to the lower air deflector. All the air required for the
combustion enters the space in the casing above the grating and passes through
the grating becoming highly heated in its passage through the holes of the grating
and along the surfaces of the air deflectors. The gas also is heated in its
passage down the chimney and to and along the annular tube, and thus a flame
of high intensity is produced. The air deflector above the flames may be
dispensed with, the grating being in that case formed approximately to the shape
of the deflector.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Isidore Spielmann in the Great Seal Patent Office on the
17th March 1883.
ISIDORE SPIELMANN of No. 2 Westbourne Terrace, in the county of Middlesex
"IMPROVEMENTS IN GAS LAMPS
"
My invention relates to a construction and arrangement of gas lamp wherein
the gas and air supplying the burners are highly heated by the flame, which is
thus rendered more powerful for illumination. Around a central chimney, I fix
a horizontal grating or disc of perforated metal, the circular exterior of which is
an annular tube supplied with gas by branch tubes from a pipe descending the
chimney. From this annular tube, a number of small tubes project radially
inwards and inclined somewhat downwards, and from these the gas issues, forming
flames directed nearly horizontally towards the chimney. Over these flames is
fixed a disc which may be of metal or of porcelain or other refractory material
which acts as a reflector of light downwards, and as a deflector of the air towards
the roots of the flames. Under the gas tubes is fixed another air deflector, nearly
parallel to the tubes, but having its inner lip turned upwards. Above the grating
is fixed a casing with a lip projecting downwards outside the exterior periphery
of the grating. A glass of hemispherical or other suitable shape is fixed to the
outer edge of the grating or to the lower air deflector. All the air required for
the combustion enters the space in the casing above the grating, and passes through
the grating, becoming highly heated in its passage through the holes of the grating
and along the surfaces of the air deflectors. The gas also is heated in its
passage down the chimney and to and along the annular tube, and thus a flame
of high intensity is. produced. The air deflector above the flames may be
dispensed with, the grating being, in that case, formed approximately to the shape
of the deflector.
The accompanying drawing is a section of a gas lamp according to my invention.
A is the central chimney down which passes the gas pipe B, communicating by
branches C with a hollow ring D: From the ring D a number of small tubes E
project radially inwards, delivering the jets of gas. F is the metal grating through
which the air for supplying the flames has to pass, becoming heated in its passage
through the openings of the grating, and also along the deffecting and reflecting
disc G, which may be of ceramic material. H is the upper air casing having
its lip I projecting downwards, and having above it a covering K which may
be of glass or ceramic material of any ornamental design. L is the glass suspended
from the ring D, and M is the deflector arranged under the gas tubes with its lip
curved upwards to direct the air on the flames. The deflecting and reflecting
disc G may be itself a grating, extending to the ring D, as indicated by the dotted
lines g, in which case, the grating F may be dispensed with.
Having thus described the nature of my invention, and in what manner the
same is to be performed, I claim :
The construction of gas lamp herein described and illustrated by the accom-
panying drawing.
In Witness whereof, I the said Isidore Spielmann have hereunto set my
hand and seal this twelfth day of March in the year of our Lord, one
thousand eight hundred and eighty three.