Supplying Gas Burners.
Year: 1885

page_text: Supplying Gas Burners.
I, JAMES LEWIS of 153 Brockley Road Brockley in the County of Surrey
Engineer do hereby declare the nature of my invention for "IMPROVEMENTS IN
APPARATUS FOR HEATING AIR AND GAS FOR SUPPLYING GAS BURNERS," to be as
follows:-
For this purpose according to my improvements the air to support combustion
is admitted to and is heated in its passage through a chamber containing a series
of tubes or passages which conduct the heated products away from the gas burner.
The air thus heated passes between an outer glass or globe which encloses an inner
glass or globe in which the burner is situated the products of combustion from
which pass away through the series of tubes or passages above mentioned. These
tubes may be arranged horizontally between two rings the outer ring forming
the outlets to the tubes. Or the series of tubes may be advantageously turned
upwards from the inner ring so as to offer a larger heating surface for heating the
air in its passage to the burner the vertical portions of the tubes being arranged to
conduct the products of combustion away to a duct or other outlet. The outlet
tubes may be enclosed in an ornamental casing or otherwise as found most
convenient.
The gas is conducted to the burner by a central tube and is highly heated in its
passage thereto.
Thus it will be seen that the burner is supplied with heated air as required from
the reservoir formed between the outer and inner glasses or globes and the flame is
unaffected by any disturbance of the air outside the inlet chamber.

page_text: Supplying Gas Burners.
I JAMES LEWIS of 153 Brockley Road Brockley in the County of Surrey
Engineer 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:-
For this purpose according to my improvements the air to support combustion
is admitted to and is heated in its passage through a chamber containing a series
of tubes or passages which conduct the heated products away from the gas burner.
The air thus heated passes between an outer glass or globe which encloses an inner
glass or globe in which the burner is situated the products of combustion from
which pass away through the series of tubes or passages above mentioned. These
tubes may be arranged horizontally between two rings the outer ring forming
the outlet to the tubes. Or the series of tubes may be advantageously turned
upwards from the inner ring so as to offer a larger heating surface for heating the
air in its passage to the burner the vertical portions of the tubes being arranged to
conduct the products of combustion away to a duct or other outlet. The outlet
tubes may be enclosed in an ornamental casing or otherwise as found most
convenient.
The gas is conducted to the burner by a central tube and is highly heated in its
passage thereto.
Thus it will be seen that the burner is supplied with heated air as required from
the reservoir formed between the outer and inner glasses or globes and the flame is
unaffected by any disturbance of the air outside the inlet chamber.
And in order that my invention may be more clearly understood and readily
carried into practice I will proceed to describe the drawings hereto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 shows a vertical section and Figure 2 a plan of a gas lamp and
apparatus for heating air and gas in their passage to the burner arranged in
accordance with my improvements.
a a is a chamber containing a series of tubes or passages a¹ a¹ for heating the
air to support combustion and for conducting the products of combustion away
from the burner the air being admitted by the annular passage b (formed by the
outside casing b¹) to the chamber a through the ring of wire gauze at a² the air
being heated by coming in contact with the outer surface of the tubes a² a¹ in its
passage through the gauze screen c¹ to the gas burner at c2 which is fixed or
mounted on the lower end of the gas inlet pipe c surrounded by the fixed pipe
or tube d through and down which the heated air is also conducted to the gas
burner from the chamber a the upper end of the tube d having slots d' therein
for the passage of the air to the burner. The heated air passes between the
globes fand g and up through the central opening f' to the burner.

page_text: The products of combustion pass up from the burner into the annular chamber a³
and into and away through the tubes a¹ a¹ to the outlet passage or chimney h.
g is a ball valve in the bottom of the globe g to afford access to the burner to
light the same.
i is a cap or cover which can be raised or lowered to cover the slots & in the air
inlet tube d when the gas burner is first lighted until an upward current is induced
through the outlet tubes a¹ after which the cover i is raised by wires or otherwise
to permit the heated air to pass through the slots d¹ down to the gas burner. The
cover i may be used to regulate the admission of heated air to the burner.
Gas burners of various descriptions may be mounted on the end of the gas inlet
pipe c so as to produce flames of various forms as may be desired according to
the form or character of the burner employed-the two inlet currents having
considerable influence thereon.
The outlet tubes a¹ a¹ may be arranged horizontally as represented in Figures
and 4 of the drawings annexed the heated air and gas being conducted to the
burner in a similar manner to that previously described corresponding letters of
reference being employed to represent corresponding parts in all the figures.
In this arrangement only one globe f is employed although an outer globe may
be applied in like manner to that previously described.
The form of the inner globe or glass f may be varied to suit the form of the
flame produced by the burner and air currents and if required may be cylindrical.
By the arrangements previously described the choking of the outlet passages
with carbon is avoided.
When the gas is first lighted by pushing the ball valve g¹ aside the slots d¹ in
the pipe d are covered by lowering the cap or cover i over them to prevent the
upward passage of heated air from the burner through them but when the current
of heated air from the chamber a is set up then the cover i is raised to allow
heated air to pass down the pipe d to the burner to meet the upward current
from the opening f¹ by which arrangement a cup or other shaped flame is
produced.
Flames of various forms may be produced depending upon the form or character
of the gas burner applied to the lower end of the gas inlet pipe c.
In cases where a large flame is required a space or perforations may be arranged
to admit part of the heated air through the seating f2 of the globe or glass f to
impinge upon the upper side of the flame.
I would remark that the form and arrangement of the parts may be varied
without departing from the novel character of my invention.
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 I make
no claim to any of the parts separately which are well known and in common use
but what I claim is :-
The improved arrangement and combination of apparatus for heating air and
gas and in the method of supplying the same to gas burners substantially in the
manner and for the purposes hereinbefore fully described and represented in
Figures 1, 2, 3 and 4 of the drawings bereto annexed.
Dated this 19th day of February 1986
TONGUE & BIRKBECK,
Agents for the Patentee.