IMPROVEMENTS IN LAMPS
Year: 1874

page_text: LETTERS PATENT William Lighbody, of Bow, in the County of
Middlesex, for the Invention of "IMPROVEMENTS IN LAMPS."
Sealed the 23rd June 1874, and dated the 8th January 1874.
PROVISIONAL SPECIFICATION left by the said William Lighbody at
the Office of the Commissioners of Patents, with his Petition, on
the 8th January 1874.
I, WILLIAM LIGHBODY, of Bow, in the County of Middlesex, do
hereby declare the nature of my said Invention for "IMPROVEMENTS IN
LAMPS," to be as follows:-
This Invention relates to an improved means of supplying air for sup-
porting combustion to the burners of lamps for burning paraffine and
other hydrocarbon oils, whereby the ordinary chimney may be dispensed
with, and consists essentially in the employment of a tube of wire gauze
or perforated metal surrounding the wick tube, through the perforations
of which tube the air is supplied to the burner.
The perforated tube is formed on or secured to the usual supporting
shield. The air enters through apertures provided in the under side of

page_text: the gallery, passes through a disc or diaphragm of wire gauze or per-
forated metal to the outside of the perforated tube, thence through the
perforations of the tube to the burner, whereby the current is broken
and divided, and the supply of air is effected in a less violent and more
even and uniform manner.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Lighbody in the Great Seal Patent Office
on the 26th June 1874.
TO ALL TO WHOM. THESE PRESENTS SHALL COME, I, WILLIAM
LIGHBODY, of Bow, in the County of Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighth day of January, in the year
of our Lord One thousand eight hundred and seventy-fonr, in the
37th year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said William Lighbody, Her special license
that. I, the said William Lighbody, my executors, administrators, and
assigns, or such others as I, the said William Lighbody, my exe-
cutors, administrators, or 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 "Im-
PROVEMENTS IN LAMPS," upon the condition (amongst others) that I, the
said William Lighbody, my executors or administrators, by an instru-
ment in writing under my hand and seal, 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 inme-
diately after the date of the said Letters Patent.

page_text: NOW KNOW YE, that I, the said William Lighbody, do hereby
declare the nature of my said Invention, and in what manner the same.
is to be performed, to be particularly described and ascertained in
and by the following statement, reference being had to the accom-
panying Drawings, and to the letters and figures marked thereon, that
is to say:
:
This Invention relates to an improved means of supplying air for
supporting combustion to the burners of lamps for burning paraffine and
other hydrocarbon oils, whereby the ordinary chimney may be dispensed
with, and consists essentially in the employment of a tube of wire gauze
or perforated metal surrounding the wick tube, through the perforations
of which tube the air is supplied to the burner.
And in order that my said Invention may be fully understood I shall
now proceed more particularly to describe the same, and for that purpose
shall refer to the several Figures on the annexed Sheet of Drawings,
the same letters of reference indicating corresponding parts in all the
Figures.
The Drawing represents a vertical section through the centre of my
improved burner.
A represents the burner having a perforated cylindrical tube B of
wire gauze or other metal formed on or secured to the gallery or glass
holder C, and surrounding or enclosing the wick tube D; E is the disc
or diaphragm of perforated wire gauze or other metal through which the
air from the apertures or grating F passes to the outside of the per-
forated tube B, thence through the perforations of the latter to the
burner A, whereby the current is broken and divided, and the supply of
air is effected in a less violent and more even and uniform manner.
The whole of the parts are surmounted with the usual dome-shaped
cap or cover.
In this Invention a large and brilliant light is obtained by the use of
a globe only, which I prefer to make of a lotus shape, but any other
suitable form may be employed.
Having now described and particularly ascertained the nature of my
said Invention, and the manner in which the same is or may be used or
carried into effect, I would observe in conclusion that what I consider to
be novel and original and therefore claim as the Invention secured to me

page_text: by the herein-before in part recited Letters Patent is, the application and
use of a perforated tube in combination with the wicks of lamp burners,
substantially as and for the purpose herein-before described and illus-
trated by my accompanying Drawing.
In witness whereof, I, the said William Lighbody, have to this my
Specification set my hand and seal, the Nineteenth day of June,
One thousand eight hundred and seventy-four.
WILLIAM LIGHBODY. (L.S.)