IMPROVEMENTS IN GAS BURNER APPARATUS
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by the said George Sylvester Grimston
at the Office of the Commissioners of Patents on the 24th February 1882.
GEORGE SYLVESTER GRIMSTON of Brockley Road Brockley in the County of
Kent "IMPROVEMENTS IN GAS BURNER APPARATUS"
This Invention has for its object improvements in gas burner apparatus
In gas burner apparatus constructed according to this Invention the flame is
entirely enclosed and all air passing to it to support combustion has to pass through
a regenerator kept heated by the products of combustion as they pass away-The
flame also may be directed downwards and then allowed to curl upwards under the
edge of a deflector so that the flame may be at the bottom of the lamp and
consequently avoid any downward shadow.
To effect this the gas is supplied by a vertical gas supply pipe to a metallic
chamber from the bottom of which descend a number of tubular jets preferably
ranged in a circle at a short distance apart one from the other-Descending from
the bottom of the gas chamber is also a metallic cylinder which surrounds and is
of larger diameter than the circle of gas jets. The metallic cylinder is open at
bottom and descends somewhat lower than the ends of the tubular gas jets. The
lower end of the cylinder is surrounded by a glass basin preferably so shaped that
every part of it is as near as may be equidistant from the nearest point of the
cylinder-The top of the glass vessel is secured to the lower end of an outer
metallic cylinder which surrounds the upper part of the cylinder before
mentioned.
Air tubes or passages are provided leading from the outer cylinder to the inner
one to admit air to the interior of the inner cylinder to support the combustion of
gas issuing from the burner.
Between the air inlet passages are spaces for the products of combustion to pass
between on their way to a chimney-this chimney rises up from the top of the

page_text: outer cylinder. The jets of gas issuing from the burner are projected downwards
and when the burners have been lighted long enough to produce an upward
draught in the chimney they curl upwards around the lower end of the inner
cylinder between it and the outer glass and the products of combustion rising
upwards to the chimney pass between the air inlet tubes or passages so that all
the air passing to the burners gets highly heated and as the flame is entirely
enclosed the heating of the incoming air is carried to a very high degree.
Preferably the air passages leading to the interior of the inner cylinder are
formed of numerous circular tubes radiating from it to the outer cylinder which
carries the glass but they might be otherwise formed to effect the same object. If
desired the outer cylinder which carries the glass might be itself surrounded by
another glass cylinder of larger diameter and this glass cylinder might extend
downwards so as to surround the glass which encloses the burner.
In this way
the outer ends of the air passages would be protected from currents of air blowing
directly into them. The outer cylinder of glass might also be closed at the top so
that all air passing to the burner would have to ascend between the inner and
outer glasses in this way the heating of the air passing to the burner would
be still further increased. In place of the burner being set so that the flame
is directed vertically downwards it might be set so as to direct the flame
horizontally.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said George Sylvester Grimston in the Great Seal Patent Office on the
24th August 1882.
GEORGE SYLVESTER GRIMSTON of Brockley Road Brockley in the County of
Kent. IMPROVEMENTS IN GAS BURNER APPARATUS."
This Invention has for its object improvements in gas burner apparatus.
In gas burner apparatus constructed according to this Invention the flame is
entirely enclosed and all air passing to it to support combustion has to pass
through a regenerator kept heated by the products of combustion as they pass
away. The flame also may be directed downwards and then allowed to curl
upwards under the edge of a deflector so that the flame may be at the bottom of
the lamp and consequently avoid any downward shadow.
.1.
inner
To effect this the gas is supplied by a vertical gas supply pipe to a metallic
chamber from the bottom of which descend a number of tubular jets preferably
ranged in a circle at a short distance apart one from the other. Descending from
the bottom of the gas chamber is also a metallic cylinder which surrounds and is
of larger diameter than the circle of gas jets. The metallic cylinder is open at
bottom and descends somewhat lower than the ends of the tubular gas jets. The
lower end of the cylinder is surrounded by a glass basin, preferably so shaped that
every part of it is as near as may be equidistant from the nearest point of the
cylinder. The top of the glass vessel is secured to the lower end of an
metallic cylinder which surrounds the upper part of the cylinder befor
Air tubes or passages are provided leading from the outer cyli->
one to admit air to the interior of the innor cylinder to sup
gas issuing from the burner. Between the air inlet passage are spa. for the
products of combustion to pass between on their way to a chimney-this chimney
rises up from the top of the outer cylinder. The jets of gas issuing from the
burner are projected downwards and when the burners have been lighted long
enough to produce an upward draught in the chimney, they curl upwards around
the lower end of the inner cylinder between it and the outer glass and the products
of combustion rising upwards to the chimney pass between the air inlet tubes or
passages so that all the air passing to the burners gets highly heated and as the
flame is entirely enclosed the heating of the incoming air is carried to a very high
degree.
sion of
Preferably the air passages leading to the interior of the inner cylinder are
formed of numerous circular tubes radiating from it to the outer cylinder which
carries the glass, but they might be otherwise formed to effect the same object. If
desired the outer cylinder which carries the glass might be itself surrounded by
another glass cylinder of larger diameter and this glass cylinder might extend
downwards so as to surround the glass which encloses the burner.
In this way
the outer ends of the air passages would be protected from currents of air blowing.
directly into them. The outer cylinder of glass might also be closed at the top so
that all air passing to the burner would then have to ascend between the inner
and outer glasses, in this way the heating of the air passing to the burner would
be still further increased. In place of the burner being set. so that the flame
is directed vertically downwards it might be set so as to direct the flame
horizontally.
In order that my invention may be fully understood and readily carried into
effect I have shewn in the Drawings hereunto annexed a gas burner apparatus
constructed in the manner I prefer.
Figure 1 is a vertical section of the apparatus and Figure 2 a bhorizontal section
on the line 1. 1. in Figure 1. A. is the gas supply pipe terminating at its lower
end in a gas chamber A from which descend a number of small tubes B ranged in
a circle as shewn at Figure 2. C is a cylinder of copper attached at its upper end

page_text: to the exterior of the gas chamber A-the bottom end of the cylinder is open and
is somewhat below the bottom of the tubes B, D. D, are copper tubes radiating out
from the upper part of the cylinder C, their outer ends pass through and are secured
in a copper cylinder E. F is a chimney which rises up from the top of the
cylinder E, this chimney may be of thin sheet metal. G is a cylinder of thin sheet
copper surrounding the cylinder E, it is closed over inwards at the top and secured
to the top of the cylinder E by rivets or otherwise. This cylinder protects the
ends of the tubes D from currents of air being blown directly into them. A bell
shaped glass shade H may be carried from the top of the cylinder Gas shewn by
three or more hinged pieces I which can be turned up into the position shewn by
dotted lines to admit of the shade H being put in place or removed. J is the glass
bowl by which the lower end of the cylinder E is closed, it has an outward flange
around its upper edge which rests on an asbestos ring K. The asbestos ring is
carried by a flange L which projects inwards from a metallic ring M-this ring
just fits within the lower end of the cylinder E and can be locked to it in any
suitable manner.
In the Drawing the cylinder E is for this purpose shewn to have
two or more pins E' projecting inwards from it and the ring M has a corresponding
number of shaped slots cut into it from its top edge. When the ring M is
pushed upwards into the cylinder E the pins E¹ are made to enter the vertical
parts of the slots, a partial turn is then given to the ring so that the pins shall
enter the horizontal portions of the slots and so hold the ring up-N. N. are knobs
or handles by which the ring M can be turned. O is a guard composed of an open
network of tine wire to serve as a guard to the glass basin J and keep it from being
accidentally broken. The bottom of the glass bowl is as shewn formed with an
inward central conical projection so that approximately the bottom of the glass
bowl J shall at all parts be at equal distances from the nearest point of the
cylinder C.
By this conical projection the stream of heated air and gas issuing from the
bottom of the cylinder C, and urged forward by the draft of the chimney is
deflected uniformly outwards to form an outwardly spreading flame which is
confined in the comparative narrow channel between the cylinder C and the bowl J.
The sides of the bowl conduct the heated products of combustion upwards and cause
them to pass between the several tubes D so that the products of combustion may
give off their heat to the incoming gas and air.
Having thus described the nature of my invention and the manner of performing
the same I would have it understood that I claim :—
First. The construction of gas burning apparatus in such a manner that streams
of gas and air are caused to issue downwards at the lower end of a cylinder and are
then uniformly deflected outwards and upwards to form an outwardly spreading
flame substantially as described.
Second. The combination with gas burning apparatus in which gas and air are
caused to issue from a pipe or cylinder and spread outwards of appliances for
heating the incoming gas and air substantially as described.
Third. The combination with gas burning apparatus in which gas is caused to
issue downwards to form an annular flame, of a bowl J with. a central conical
projection confining the flame within a channel substantially as described.
Fourth. My gas burning apparatus substantially as described and illustrated in
the Drawing annexed.
In witness whereof I the said George Sylvester Grimston have hereunto set
my hand and seal this Twenty first day of August in the year of our Lord
One thousand eight hundred and eighty two.