IMPROVEMENTS IN GAS LAMPS
Year: 1885

page_text: I JAMES ROOTS of 25 The Avenue Tottenham Engineer do hereby declare the
nature of my invention for IMPROVEMENTS IN GAS LAMPS to be as follows:
The object of the invention is to supply the gas flame in the lamp with heated
air in such a way as to increase the light by rendering the combustion more
perfect. It is designed to throw the light downward without a shadow. The gas
tubing for the supply may enter the side of the lamp or may be conveyed down-
ward through the chimney to the burner. The air supply enters the top of the
lamp through the perforations surrounding the chimney, it then passes downward
between the chimney wall and an outer wall or tube surrounding the lower part of
the chimney within the lamp, in the mouth of the annular passage thus formed the
burner is placed. This passage forms a heating chamber for the air before it
reaches the flame.
The rapidity of the current is reduced and the air still further
heated by passing through an annulus of perforated metal which covers the moutli
of the air heating chamber: The burner being annular and the chimney being in
the centre the flame and air travel inward from the burner toward the centre.
Flat flame burners may be placed in the mouth of the air heating chamber as
described, in the same way, and some portion of the mouth may be closed if
necessary according to the number of burners.

page_text: 1 JAMES ROOTS of 25 The Avenue, Tottenham, Middlesex do hereby declare the
nature of my said invention and in what manner the same is to be performed to
be particularly described and ascertained in and by the following statement:—
The object of this invention is to supply the gas flame in lamps with heated air
in such a way as to increase the light by rendering the combustion more perfect.
It is designed to throw the light downward without a shadow The gas tubing for
the supply may enter the side of the lamp or may be conveyed downward through
the chimney to the burner. The air supply enters the top of the lamp through
perforations surrounding the chimney it then passes downward between the
chimney walls and an outer wall or tube surrounding the lower end of the chimney
within the lamp. In the mouth of the annular passage thus formed, the burner is
placed, this passage forms a heating chamber for the air before it reaches the flame.
The rapidity of the current is reduced and the air still further heated by passing
through an annulus of perforated metal which covers the mouth of the air heating
chamber the burner being annular and the chimney being in the centre the flame
and air travel inward from the burner towards the centre.
Flat flame burners may be placed in the mouth of the air heating chamber as
described in the same way and some portion of the mouth may be closed if
necessary according to the number of burnere.
The invention will be understood by reference to the annexed drawing in which
A is the Gas pipes. B the inverted circular burner, preferably argand. C the
flame. D plates of perforated metal to increase heat of air and lessen force of it.
E a button or disc of metal, F reflector G glass bowl, H chimney, I air heating
chamber. The arrows shown indicate the direction of the air through the lamp.
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 arrangement of Lamp herein before described in which the gas flames
converge to a central uptake and furnished with heated air for increasing brilliancy
of light as set forth.