Year: 1888

page_text: I, ALEXANDER OGILVIE BROWN of 27 Holyrood Quadrant, Glasgow, in the County
of Lanark, North Britian, Gas Engineer do hereby declare the nature of this
invention be to as follows:-
.
This Invention, which relates to improvements in regenerative gas lamps, relates to
the arrangements used for heating the gas and heating the air respectively whereby
the volume of gas supplied to the said lamps as well as the illuminating power thereof
are increased and the air heated to a higher temperature.
The improvements consist in arranging below the burner and within the lower part
of the shade or casing which encloses the lamp a series of tubes which become heated
by the waste heat within the lamp casing. The gas passes into and through the said
tubes by the supply pipe on its way to the burner and issues from the burner at the
point of its highest temperature.
That portion of the air which is supplied to the lamp from above enters thereinto
through a chamber divided by a series of radial partitions or by tubes or equivalent
divisions, on descending down or through which the air becomes highly heated by
virtue of the said chamber and its divisions becoming heated by a portion of the waste
heat within the lamp casing and at its point of maximum temperature meets the gas
with which it burns."
ST. JOHN V. DAY,
115, St. Vincent Street, Glasgow,
Petitioner's Agent.

page_text: I, ALEXANDER OGILVIE BROWN of 27 Holyrood Quadrant, Glasgow, in the County
of Lanark, North Britain, gas 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:-
My Invention, which relates to improvements in regenerative gas lamps, relates to
the arrangements used for heating the gas and heating the air respectively, whereby
the volume of gas supplied to the said lamps as well as the illuminating power thereof
are increased and the air heated to a higher temperature.
The improvements consist in arranging below the burner and within the lower
part of the shade or casing which encloses the lamp a series of tubes which become
heated by the waste heat within the lamp casing. The gas passes into and through
the said tubes by the supply pipe on its way to the burner and issues from the burner
at the point of its highest temperature.
That portion of the air which is supplied to the lamp from above enters thereinto
through a chamber divided by a series of radial partitions or by tubes or equivalent
divisions on descending down or through which the air becomes highly heated by
virtue of the said chamber and its divisions becoming heated by a portion of the waste
heat within the lamp casing and at its point of maximum temperature, meets the gas
with which it burns.
In order that my Invention may be properly understood and readily carried into
effect, I will now proceed to describe the drawings hereunto annexed.
Figure 1, is a vertical section of a regenerative gas lamp to which my said
improvements are applied, and Figure 2, is also a vertical section of a burner and
air conducting tube drawn to an enlarged scale used in conjunction with the said
regenerative gas lamp and made in accordance with and constituting part of my said
Invention and hereinafter fully described.
In carrying my Invention into practice a central vertical pipe, as is ordinarily
employed in such types of regenerative gas lamps, supplies the burner A, with
is used as a means of suspending the lamp from a ceiling.
gas and
Above the burner A, and beneath the dome-shaped casing B, air is led from
the outside of the lamp in the direction of the arrows marked D into a hot air
chamber C, through radial air passages or tubes D, whence it is conducted or
caused to traverse over the outer casing E, of the said hot air chamber C, on its
way to the flame. The said tubes D, and the cylindrical casing E, becoming
highly heated by the combustion of the lamp together with the waste heat, impart
the proper high degree of temperature to the air, passing through and along the
before mentioned air ducts or passages D, and E, necessary for the more perfect
combustion of the lamp. The so heated air in its passage downwards indicated by
the arrows, Figure 1, over and through the inner tube or casing E, is further led
down the air passages holes or tubes F, formed in the top of the said burner A,
reference being made more particularly to Figure 2, heats the gas and increases
its volume and illuminating power as it issues through the small holes or passages a,
into the wide annular space G. After the gas has become so heated it finally
issues under pressure through the jet perforations b, into the narrow annular space H,

page_text: and out at the annular opening e, to be burnt. Cold air enters the bottom exterior of
the lamp through the hole 1, made in the globe, Figure 1, and ascends the space J,
formed by the tubular casing K, where it also becomes heated and in its ascent
becomes divided or broken up into a great number of currents as it emerges through
a series of perforations L, indicated by arrows in the top of the tubular casing K,
where it commingles with the down-flowing heated currents of air through the burner
at the point marked S. Both currents of heated air, after having so commingled
become of one uniform temperature, are finally directed to the flame by the conical
sleeve M.
It is here understood that the admission of air from the bottom of the lamp forms
no part of my Invention as the same has long been in use, but what constitutes an
essential feature of my present improvements is the commingling of the ascending
and descending currents of heated air as hereinlast described and shewn more
particularly in Figure 2.
At a suitable distance above the flame a ring or washer N, semi-elliptic in section
made of refractory material is suspended from a metallic flange d, formed upon the
cylindrical casing E, Figure 1. Above this ring or washer N, and enclosing it is
another conical ring O, also constructed of refractory material. Upon the said rings N,
and O, the flame impinges heating them to an intense whiteness adding thereby a very
high maximum of illuminating power to the lamp.
The waste heat and products of combustion pass off through spaces formed by tho
radial air passages or tubes D, and finally up the chimney R.
In the tubular casing K, is an inner telescopic tube K³, which is so constructed as
to slide up and down within the casing K. Its range is determined by a stud f, and
secures it in its uppermost position working in a bayonet-joint g, as seen in Figure 1,
and in dotted lines Figure 2, the object of which is to facilitate the lighting of the
lamp without opening the globe as was hitherto the case in such lamps. In the
normal position of the casing or tube K, it rests with its flanged end upon the glass of
the globe preventing any ingress of air except by the passage J.
Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed, I declare that what 1
claim is
-
1. In gas lamps of the construction shewn at Figure 1, introducing air to a hot air
chamber C, by passing the air up and over the outer casing of the said chamber C, in
and from which the air is heated and broken up with beneficial results without tho
employment of perforations or wire gauzo substantially as and for the purposes
bereinbefore described and shewn upon the annexed sheets of drawings.
2. The commingling of the two currents of heated air below the burner A, sub-
stantially as and for the purposes hereinbefore described and shewn upon the annexed
sheets of drawings.
3. The arrangement of lighting the lamp from the bottom thereof substantially as
and for the purposes hereinbefore described and shewn upon the annexed sheets of
drawings.
4. Producing a flat or disc shaped flame without the employment of perforations
substantially as and for the purposes herein before described and shewn upon the
annexed sheets of drawings.
DL: 1121
D
11000
ALEXANDER OGILVIE BROWN,
27, Holyrood Quadrant, Glasgow,
Applicant.