APPLYING HEATED AIR TO GAS
Year: 1885

page_text: DANIEL ROBERTSON GARDNER, Cabinet Maker, 36 Jamaica Street, Glasgow,
County of Lanark, North Britain, do hereby declare the nature of my invention
for PRODUCING AND APPLYING HEATED AIR TO GAS, and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement :-
In order to supply the flame with heated air for the purpose of increasing the
illuminating power of gas.
1st. For ordinary or upward lights; I use a double funnel; the inner one being
used in the usual way as for an argan burner; the outer one a little larger in
diameter and descending below the inner one and resting on a closed base, so that
the air supplied to the flame or flames, comes down between the funnels, and
whilst doing so, becomes sufficiently hot to increase the illuminating power of
the gas.
2nd. For ordinary or upward lights, I use at the back or centre of the flame or
flames; a small reflector in close proximity, or in contact with the flame or flames;
its construction being like a hood or thimble fitting loosely over an open tube or
tubes; a single funnel is placed over the flame as in an argand light, or an ordinary
globe may be used, but both must be closed underneath with the exception of the
open tube or tubes; the air then passes up the tube, tubes, or other form of opening
and down between the outside of the tube or tubes and the inside of the thimble
or hood to the flame, and in doing so, gets heated sufficiently to increase the
illuminating power of the gas-The thimble or hood may be made long, with small
perforations in it, through which the heated air is supplied to the flame or flames
at higher levels, as well as the supply given under the flame; a flame may therefore
be elongated, and hence take the form of a rod of light.
3rd. For ordinary or upward lights with globes that are closed underneath,
I put a star shaped smoke shade over the flame; this shade being double forms a
chamber; the points of the star being open, forms an ingress for the air; a pipe
then carries the air that is heated in this chamber down the globe, and supplies
the flame with heated air and thus increases the illuminating power of the gas.
4th. For sun, or downward, horizontal, or upturned lights; I supply the flame
or flames with heated air by a double funnel or through chambers leading into the

page_text: space between a double globe or disc; the inner one enclosing the light has an
opening or openings in it sufficient and so placed as to admit air to the flame or
flames; whilst the outer one being closed, the air is supplied down between the
double funnels or through the chambers, and down between the globes or discs ;
the air in the transit getting heated sufficiently to increase the illuminating power
of gas.
5th. For sun, or downward, horizontal, or upturned lights, I supply the flame or
flames with heated air by a double funnel; the one funnel (either inner or outer)
being used for the smoke, the other is used for the air, which in its transit to the
flame or flames gets heated sufficiently to increase the illuminating power of the
gas. If one funnel only is used; a pipe open at the top and communicating with
the air, is led straight down the funnel to the flame, and having a closed globe
underneath, the air goes down this pipe and becomes sufficiently heated to increase
the illuminating power of gas. This pipe going down the funnel may be partially
connected to the air with openings all the way down, can be corrugated, made
spiral or zig-zag if more heating power is required.
6th. For sun, or downward, horizontal, or upturned lights; I have one globe or
disc underneath; I have a reflector which is in close proximity or contact with
the flame or flames; the reflector (being shaped to suit the flame) is made hollow
with an air passage from the bottom of the globe or disc, or from any other
direction, so that it leads into its centre; thus the air is supplied to the flame or
flames from the inside of the reflector where the air gets heated sufficiently to
increase the illuminating power of the gas; this chamber in the reflector may be
run up the chimney and so increase the heating power of the chamber.
7th. Air may likewise be heated and applied to oil & gas flames, by contracting
or damping the outlet, or inlet, or both, b, d, until the oil or gas flame or flames
are increased in illuminating power by the proper amount of hot air for combustion
being supplied. The contractors or ventilaters can either be fixed or moveable, so
as to regulate the opening, which may be of any shape, perforated, screwed, sliding,
turning, wire gauzed, or the funnels or globes may be made with the exact
openings.
8th. The inlet and outlet passages where practicable to be used for lighting the
lamp; where a regulating ventilator is used, it can be hinged, screwed, slid, turned,
or withdrawn, so as to admit of the light being applied.
DESCRIPTION OF DRAWINGS,
Fig. I. II. III. IV. a, double funnels. b, contractors.
Fig. V. a, pipe for supply of air. b, contractor.
Fig. VI. b, contractor. c, for supply of air and air heating chamber. d, hinged
ventilator to passage c to light the lamp.
Fig. VII. b, contractor. c, for supply of air and passage to light the lamp.
d, ventilator.
Fig. VIII, b, contractor. c, for supply of air, air heating chamber, and passage
to light lamp. e, perforated hot air chamber.
Fig. IX. X. XI. b, contractors.
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
-
1st. Using the double funnel for the purpose of heating the air so as to increase
the illuminating power of gas.
2nd. Using bollow reflectors and shades for the purpose of heating air so as to
increase the illuminating power. of gas.
3rd. Using reflectors that are perforated for the purpose of supplying heated air
to elongated flame or flames.

page_text: 4th. Using a simple tube, straight down the smoke funnel, or with partially
connected openings to the air all the way down, or corrugated, or spiral, or zig zag
for the purpose of supplying beated air to increase the illuminating power of gas.
5th. Using a double globe or disc for downward lights, for heating and leading
the air under the flame or flames.
6th. For the manner of supplying from all directions, heated air to gas flames
as set forth especially under head 6th.
7th. Using alone or combined, any or all of the different methods described, in
which air is heated and applied to gas for the purpose of increasing its illuminating
power.
8th. Applying in like manner heated air to oil and gas flames by contracting
the outlet, or inlet, or both of funnels & globes for oil & gas lights, b, in Fig. 1X,
X, XI, also b, & d, in other Figs.
9th. For lighting the lamps through the inlet or outlet openings or ventilators,
and the moving, sliding, turning, screwing, or hinging of such ventilators when
necessary for that purpose.