Improvements in and relating to Regenerative Gas Lamps or Lanterns.
Year: 1889

page_text: Date of Application, 5th Feb., 1889
Complete Specification Left, 5th Nov., 1889-Accepted, 7th Dec., 1889
PROVISIONAL SPECIFICATION.
Improvements in and relating to Regenerative Gas Lamps
or Lanterns.
I, GEORGE PORTER, of 23 Cullum Street, in the city of London, Engineer, do hereby
declare the nature of this invention to be as follows:-
This invention relates to improvements in regenerative gas lamps or lanterns.
In carrying out my invention I employ an adjustable or regulating burner
provided with a valve one half of which is formed in the roof of the body of the
burner and has a passage through its centro for the gas to enter; the lower half
of the valve is formed in the bottom of the burner which I make removable and
which I provide with a receptacle for any carbon or other deposit that may collect
in the burner.
A row of holes for the exit of the gas is made round the body of the burner,
the top of which is screwed to suit the pipe or stem of the lamp through which
the gas is supplied.
By this arrangement it will be obvious that by screwing the bottom upwards or
downwards the valve is more or less opened or closed thus enabling the burner to
be set with facility so as to pass only the desired quantity of gas and the entire
removal of the bottom affords an easy means for the effectual cleaning of the
burner.
Upon the stem which carries the burner I form a body or frame with lateral
openings and carrying two or more tubes for the purpose of conveying air from the
heating chamber above the burner to the flame so as to intensify its illuminating
power. In admitting the air it is advantageous to do so in such a manner that the
Hame be not rendered flickering or unsteady, and for this purpose I form near the
bottom of the inside part of the outer tube a horizontal collar somewhat in the form
of a V, the tube from the collar curving outwards to a collar on the outer edge so that
the mouth of the said tube is bell shaped.
The inner tube or tubes is or are shorter than the bell mouthed tube and of such
diameter as to provide an annular space between each. The burner is fixed upon
the stem and in the upper part of the bell shaped opening, in such a position that
the holes or point at which the gas issues is above the bottom edge of the outer or bell
shapod tube.
In the upper part of the body a chamber is formed to receive the inlet and
outlet gas pipes, and, provision is made for intercepting any carbon or other
matter.
In some cases I dispense with the bell mouthed opening, and instead of fixing
the V shaped collar horizontally on the outer tube I place it between the tubes with
its apex vertically.
In order to prevent the ribs or streaks which are seen in a flame where the point of
ignition is the outer edge of a series of holes, I propose to surround the said holes
with a cup, so that the gas burns from the outer edge thereof instead of from the
onter edge of the holes, by this means the various streaks of gas are broken up, and
are not perceptible in the flame.
It being important in regenerative gas lamps that the ring which carries the glass
should when closed upon the body of the lamp be as nearly air tight as possible and
also that the glass itself should if possible have an airtight seating in the ring, 1 form
the said ring with annular grooves for the purpose of receiving asbestos packing or
rings; upon the outer edge of the body of the lamp a V shaped ring projects down-
wards and presses upon the asbestos when the lamp is closed; the glass globe instead
of merely having its edge projecting at a right angle, is curved downwards, in order

page_text: that the thin edge of the glass may rest upon the asbestos, and if necessary pressure
might be exerted upon the glass by a spring or similar means. I counterbalance the
catch or fastening for tho said ring and in order to further tighten it when closed so
a to prevent any air passing (as is the case with any ordinary latch) 1 further
provide the catch with an eccentric or cam action so that by a slight pressure
upon one side thereof, the ring is lifted and brought firmly into its proper
position.
G. F. REDFERN & Co..
4, South Street, Finsbury, E.(., Agents for Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to Regenerative Gas Lamps
or Lanterns.
I, GEORGE PORTer, of 23, Cullum Street, in the city of London, Engineer, do
hereby declare the nature of this invention and in what manner the same is to
he performed to be particularly described and ascertained in and by the following
statement
This invention relates to improvements in regenerative gas lamps or lanterns and is
illustrated in the accompanying drawing, in which—
Figure 1 is a vertical section of a regenerative gus lamp or lantern with my
improvements applied thereto.
Figure 2. 3 and 4 are sectional views of details.
Figure 3 is a vertical section of part of a lamp illustrating a modification of one of
my improvements; and
Figure 6 is a view of a lamp partly in elevation and partly in section showing a
modification of another of my improvements.
Similar letters in all the figures indicate similar parts.
In carrying out my invention, which I will first describe by reference to figure 1,
I employ an adjustable or regulating burner formed in two parts a and b, the part a
being screwed into the other part and forming a valve having its seating at c in
the said part ; a passage is forumed through the centre of the serow-threaded neck d
of the part for the gas to enter the burner; the lower half of the burner being
screwed into the upper part is obviously removable and it is made hollow so as to
constitute a receptacle for any carbon or other deposit that may collect in the
burner.
A row of holes e figures 1 and 2 for the exit of the gas is made round the part b
of the burner, the neck or top d of which is screwed into the pipe or stem ƒ of the
lamp through which the gas is supplies.
By this arrangement it will be obvious that, by screwing the bottom part a of the
burner upwards or downwards, the valve will be more or less opened or closed, thus
enabling the burner to be set with facility so as to pass only the desired quantity of
gas, and the entire removal of the bottom part a affords an easy means for the
effectual cleaning of the burner.
Upon the stem which carries the burner, 1 form a body or frame consisting of
two (or more) L-shaped rings g, h connected together and to the stem by websi
so as to form lateral openings; the rings g and carry tubos k and respectively for
The purpose of conveying air from the heating chamber above the burner to the
flame a so as to intensify its illuminating power.
In admitting the air it is advantageous to do so in such a manner that the flame
be not rendered flickering or unsteady, and for this purpose I form near the bottom
of the inside part of the outer tube an annular V shaped projection o figures 1 and 3,
the tube from this projection being curved outwards and formed into a bead pon
the outer edge, so that the mouth of the said tube is hell slumped.
The inner tube is shorter than the bell mouthed tube and of such diameter as
to leave annular spaces y and between itsolf and the tubo k and stom /.

page_text: The burner is fixed upon the stein fand in the upper part of the bell shaped
opening, in such a position that the holes or point at which the gas issues are or is
above the bottom edge of the outer or bell shape tube k.
formed
In the upper part of the body of the lamp above the stem, a chamber s
which receives a short tube t connected to the head of the stem f, and the end of
the gas supply pipe r.
The end of the tube is curved towards one side and by thus
interrupting the direct flow of the gas supply any carbon or other matter contained
in the gas is caused to be deposited in the chamber 8.
It being important in regenerative gas lamps that the ring which carries the glass
should when closed upon the body of the lamp be as nearly air tight as possible and
also that the glass itself should if possible have an air-tight seating in the ring, I form
the ring w with annular grooves and y for the purpose of receiving asbestos or
other suitable packing or rings; upon the outer edge of the body of the lamp a
V-shaped ring z projects downwards and presses upon the asbestos in the groove.r
when the lamp is closed; the glass globe a¹ instead of merely having its edge
projecting at a right angle, is curved downwards, as shown at 6, in order that the
thin edge of the glass may rest upon the asbestos in the other groove y and if
necessary pressure might be exerted upon the glass by a spring or similar means.
counterbalance the catch or fastening c for the ring was illustrated in figures 1 and 4
and, in order to further tighten the ring when closed so as to prevent any air passing
(as is the case with any ordinary latch) I further provide the catch e' with an eccentric
or cam-shaped nose d', and it will be observed that its pivot h¹ is placed rather to
the loft of the bearing point of the nose d', so that by a slight pressure upon the
end e' of the catch the latter and with it the ring wis lifted firmly into its proper
position by the cam surface d' riding up over a plate or pin f¹ upon the edge of the
body of the lamp and is securely locked to the said body.
I
In other respects the lanp is of ordinary construction and therefore does not need
description.
In some cases, as illustrated in figure 5, I dispense with the bell mouthed opening
and instead of forming the V-shaped projection o with its base on the outer tube k,
I place it between the tubes k and with its base downwards.
I sometimes, as shown in figure 6, place the gas supply pipe outside the lamp
instead of inside as shown in figures 1 and 5, as 1 find there is then less tendency
on the part of the gas to form a carbonaceous deposit and I am also enabled to
dispense with the necessity of employing a chamber such as a (figure 1). The burner
is of the same construction as that hereinbefore described but its position on the
stem f is reversed. g¹ is a rod of the same shape as the pipes which I provide mainly
for the purpose of giving an uniformity of shape to the lamp.
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 I
claim is :-
1. In a regenerative gas lamp or lantern an adjustable or regulating burner made
in two hollow parts detachable one from the other, one of the said parts forming a
valve having its seating in the other part which is provided with a row of holes,
substantially as, and for the purpose hereinbefore described and illustrated in the
accompanying drawing.
2. The manufacture and use of the improved burner hereinbefore described with
reference to figures 1, 2, 5 and 6 of the accompanying drawing.
3. In a regenerative gas lamp or lantern providing the air supply tubes with an
annular V-shaped projection such as o either formed on the outermost tube as
shown in figures 1, 3 and 6 or placed in the space between the two outermost
tubes as shown in figure 5, substantially as, and for the purpose hereinbefore
described.
4. Forming the ring which carries the glass of a regenerative gas lamp or
lantern with annular grooves, in which asbestos or other suitable packing is intended
to be placed, in combination with a V-shaped ring upon the outer edge of the body of

page_text: the lamp and a downwardly curved edge or rim upon the glass globe, the said ring
being caused to press upon the packing by means of a suitable tightening device or
fastening, substantially as hereinbefore described and illustrated in figure 1 of thu
accompanying drawing.
5. In a regenerative gas lamp or lantern the use of the fastening device heroinbefore
described and illustrated in figures 1 and 4 for pressing the ring which carries the
glass globe to the body of the lamp for the purpose of ensuring a tight joint.
6. The improved regenerative gas lamp or lantern hereinbefore described and
illustrated in figure of the accompanying drawing.
7. The modified arrangement of lamp or lantern illustrated in figure 6 in which
the gas supply pipe is placed outside the lamp, substantially as hereinbefore
described.
Dated the 5th day of November 1889.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.