IMPROVEMENTS IN OR CONNECTED WITH LAMP BURNERS
Year: 1882

page_text: LETTERS PATENT to William Lighbody of the firm of Thomas Rowatt &
Sons of Edinburgh & London, for an invention of "IMPROVEMENTS IN OR
CONNECTED WITH LAMP BURNERS
"
PROVISIONAL SPECIFICATION left by the said William Lighbody at the
Office of the Commissioners of Patents on the 11th April 1882.
WILLIAM LIGHBODY of the firm of Thomas Rowatt & Sons of Edinburgh and
London IMPROVEMENTS IN OR CONNECTED WITH LAMP BURNERS
"
"
My Invention relates to Improvements in the construction and combination of
lamp burners, or of the parts connected therewith, whereby an increased power of
light is obtained with wicks of the usual number and size. It consists,
Firstly, as applied to duplex or double wick tube burners with inner and outer
domes, in substituting a single slot for the double slots hitherto used in each
dome.
Secondly in arranging the perforated air regulator or rarefier where it surrounds
the wick tubes, "trianglewise," relatively with the latter that is to say. On the
outside of each wick tube is a ferforated plate sloping from the base of the rarefier
at an angle of say 60° (more or less) until it meets the wick tube at any suitable
height.
The end spaces thus formed with the wick tubes are closed by perforated
triangular plates which extend over the ends of the wick tubes and meet between
them. The advantages of my invention are that by the introduction of oxygen
between the two flames at the burning point, and converting the two flames into
one flane through a single slot in each dome an increased power of light is obtained
without altering the size of the wicks. The sloping portion of the air regulator or
rarefier has the effect of producing a more perfect combustion.

page_text: "
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Lighbody in the Great Seal Patent Office on the
11th October 1882.
WILLIAM LIGHBODY of the firm of Rowatt and Sons of Edinburgh and London,
"IMPROVEMENTS IN OR CONNECTED WITH LAMP BURNERS"
My Invention relates to improvements in the construction and combination of
hydrocarbon oil lamp burners or of the parts connected therewith, whereby an
increased power of light is obtained with wicks of the usual number and size.
It consists, Firstly, as applied to double wick burners with inner and outer
domes in substituting a single slot for the double slots hitherto used in each, and,
Secondly, in arranging the perforated air regulator or rarefier where it surrounds
the wick tubes, trianglewise relatively with the latter.
And in order that my said Invention may be well understood I shall now
proceed more particularly to describe the same, reference being made to the
accompanying drawing, like letters of reference indicating corresponding parts in
all the figures.
Figure 1 is a cross section of my invention, Figure 2 a plan, and Figure 3 a
similar view thereof with the domes removed.
A. A. represent the double wick tubes or burners furnished with inner and outer
domes B. B. in each of which is a single slot C. C'. through which the wicks D. D.
pass in lieu of through two slots in each done as hitherto the case.
I arrange the perforated air regulator or rarefier E where it surrounds the wick
tubes A. A trianglewise relatively with the latter, that is to say-On the outside
of each wick tube A is a perforated plate a sloping from the base of the air
regular or rarefier E at an angle of say 60° (more or less) until it meets the
wick tube A near the top of the latter as shewn (or at any other suitable height)-
The end spaces thus formed with the wick tubes A. A. are closed by perforated
triangular plates b. b. which extend over the ends of the wick tubes A and meet
between them as shewn or in any other suitable manner.
The advantages of any Invention are that by the introduction of oxygen between
the two wicks D. D. or flames at the burning point and converting the two flames
into one flame through the single slot C. C. in each domo B. B'. an increased
power of light is obtained without altering the size of the wicks D. D. The
sloping portions a of the air regulator or rarefier E have the effect of producing a
more perfect combustion without the use of a glass chimney, a globe only being
required.
Having thus described the nature of my said Invention and the method of
carrying the same into effect, I would observe in conclusion that what I consider
novel and original and therefore claim as my Invention, is :-
In double wick tube burners with inner and outer domes substituting a single
slot for the double slots hitherto used in each dome, substantially as and for the
purpose described and shewn by figures 1 and 2 of the accompanying drawing.
2. The construction and arrangement of the air regulator or rarefior E where it
surrounds the wick tubes A. A. substantially as and for the purpose described and
illustrated by figures 1 and 3 of the accompanying drawing.
In Witness Whereof I the said William Lighbody have hereunto set my hand
and seal this seventh day of October in the year of our Lord One thousand
sigkë kundred and eighty two.