IMPROVEMENTS IN GAS BURNERS FOR PROVISIONAL SPECIFICATION
Year: 1869

page_text: LETTERS PATENT to John Richardson Wigham, of Albany House,
Monkstown, in the County of Dublin, Ireland, Gas and Lighthouse
Engineer, for the Invention of "IMPROVEMENTS IN GAS BURNERS FOR
PROVISIONAL SPECIFICATION left by the said John Richardson
Wigham at the Office of the Commissioners of Patents, with his
Petition, on the 30th December 1869.
I, JOHN RICHARDSON WIGHAM, of Albany House, Monkstown, in
the County of Dublin, Ireland, Gas and Lighthouse Engineer, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN GAS
BURNERS FOR ILLUMINATING BEACONS, BUOYS, AND LIGHTHOUSES," to be as
follows:-
In the Specification to former Letters Patent granted to me, and bearing
date 4th April 1865, No. 945, was described a mode of illuminating
lighthouses by means of combustible gas produced from bituminous

page_text: matters, &c., and a mode of burning such gas by a peculiar construction
of burner which I termed a "crocus burner," consisting of a cluster of
jets, having below them an equalizing cylinder and just above the
tops of the flames an "oxidizing cylinder" for producing perfect com-
bustion.
Now my present Invention consists in employing in place of such
cluster of jets for the combustion of gas in lighthouses annular burners
of about 3 inches internal diameter, or approximating as near as may
be to the size of the ordinary 4 and 3 wick oil lamps used for the
dioptric apparatus in lighthouses, such annular burners having small
holes or slits through which the gas issues on the principle of ordinary
argand burners, and surrounding which annular burners or reaching
nearly down to the tops of the flames whereof I arrange cylinders or
chimneys in order to produce more perfect combustion.
Another part of my Invention consists in the conversion into gas burners
of the ordinary 2, 3, 4, and 5 wick oil lamps used in the dioptric
apparatus of lighthouses. This I effect by the conversion of the annular
spaces in the burners of such lamps at present occupied by the wicks
into chambers for gas, having slits or holes of the usual construction,
and the whole being surrounded by a chimney.
Another part of my Invention consists in employing for the illumina-
tion of lighthouses gas burners consisting of two or more concentric
rings pierced with holes or slits through which the gas issues somewhat
similar to ordinary argand burners, surrounding which concentric ring
burners or reaching down nearly to the tops thereof I arrange chimneys
or cylinders in order to produce more perfect combustion.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Richardson Wigham in the Great Seal Patent
Office on the 25th June 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN 30
RICHARDSON WIGHAM, of Albany House, Monkstown, in the County of
Dublin, Ireland, Gas and Lighthouse Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirtieth day of December, in the

page_text: year of our Lord One thousand eight hundred and sixty-nine; in the
thirty-third year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said John Richardson Wigham, Her special:
licence, that I, the said John Richardson Wigham, my executors, ad-
ministrators, and assigns, or such others as I, the said John Richardson-
Wigham, my executors, administrators, and assigns, should at any time.
agree with, and no others, from time to time and at all times thereafter.
during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain.
and Ireland, the Channel Islands, and Isle of Man, an. Invention. for
"IMPROVEMENTS IN GAS. BURNERS FOR ILLUMINATING BEACONS, BUOYS, AND.
LIGHTHOUSES," upon the condition (amongst others) that I, the said John
Richardson Wigham, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, should
particularly describe and ascertain the nature of the said Invention, and'
in what manner the same was to be performed, and cause the same to
be filed in the Great Seal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the-said John Richardson Wigham, do.hereby.
declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained
in and by the following statement thereof, reference being had to the
accompanying Sheet of Drawings, and to the figures and letters marked
thereon, that is to say:-
In the Specification to former Letters Patent granted to me, and
bearing date 4th April 1865, No. 945, was described a mode of illu-
minating lighthouses by means of combustible gas produced from
bituminous matters, &c., and a mode of burning such gas by a peculiar
construction of burner which I termed a "crocus burner," consisting
of a cluster of jets having below them an equalizing cylinder, and just
above the tops of the flames an "oxidizing cylinder" for producing
perfect combustion.
Now my present Invention consists in employing in place of sucli
cluster of jets for the combustion of gas in lighthouses annular burners
of about 3 inches external diameter, or approximating as near as may
be to the size of the ordinary 4 and 3 wick oil lamps used for the dioptrio
apparatus in lighthouses, such annular burners having small holes or
slits through which the gas issues on the principle of ordinary argand

page_text: burners, and surrounding which annular burners or reaching nearly down
to the tops of the flames whereof I arrange cylinders or chimneys in
order to produce more perfect combustion.
Another part of my Invention consists in the conversion into gas
burners of the ordinary 2, 3, 4, and 5 wick oil lamps used in the dioptric
apparatus of lighthouses. This I effect by the conversion of the annular
spaces in the burners of such lamps at present occupied by the wicks
into chambers for gas having slits or holes of the usual construction, and
the whole being surrounded by a chimney.
Figures 1 and 2 of the Drawings show respectively an elevation and
a plan of a burner converted and constructed according to this part of
my Invention.
D, D, are the concentric wick chambers of the oil lamp formed into
gas burners by being closed in at the top, and provided either with holes
as at d or with slits as at d¹ for the issue of the gas, which burners are
supplied with gas through the pipes E, E¹. A ring F fixed to the burner
serves to carry a glass cylinder (not shown) surrounding the burner, or
such cylinder may reach down to the tops of the flames only. G is the
ring that served to support the glass of the oil lamp.
Another part of my Invention consists in employing for the illumina-
tion of lighthouses gas burners consisting of two or more concentric
rings of any suitable diameter pierced with holes or slits through which
the gas issues somewhat similar to ordinary argand burners, surrounding.
which concentric ring burners or reaching down nearly to the tops
thereof I arrange chimneys or cylinders in order to produce more perfect
combustion.
Figures 3 and 4 of the accompanying Drawings show respectively a
sectional elevation and a plan of a burner constructed according to this
part of my Invention.
A, A, A, are concentric annular ring burners of any desired diameter,
which are supplied with gas through the pipes B, B. The gas may
issue from such burners either through small holes as at a, a, or through
slits as at a². The burners may be surrounded by a glass cylinder (not
shewn) carried by the ring C, or a cylinder may be arranged to reach
down nearly to the tops of the flames, as before mentioned.
Having thus described the nature of my Invention, and in what
manner the same is to be performed, I wish it to be understood that

page_text: what I claim under the herein-before in part recited Letters Patent
is,―
First. The employment in buoys, beacons, and lighthouses of annular
gas burners of about 3%, inches external diameter, or approximating
as near as may be to the size of the ordinary 3 and 4 wick burners of
oil lamps used for dioptric apparatus, substantially as herein-before
described.
Second. Converting the burners of ordinary 2, 3, 4, and 5 wick oil
lamps used in the dioptric apparatus into gas burners, as herein-before
set forth and described with reference to Figures 1 and 2 of the
accompanying Drawings.
Third. The employment in buoys, beacons, and lighthouses of gas
burners consisting of two or more concentric rings of any suitable
diameter, substantially as herein-before described with reference to
Figures 3 and 4 of the accompanying Drawings.
In witness whereof, I, the said John Richardson Wigham, have
hereunto set my hand and seal, this Twenty-first day of June,
in the year of our Lord One thousand eight hundred and
seventy.
TATTIT