IMPROVEMENTS IN LAMP BURNERS
Year: 1874

page_text: LETTERS PATENT to Alexander Lighbody, of the City of Edinburgh,
North Britain, and William Lighbody, of Bow, in the County of
Middlesex for the Invention of "IMPROVEMENTS IN LAMP BURNERS."
PROVISIONAL SPECIFICATION left by the said Alexander Lighbody
and William Lighbody at the Office of the Commissioners of Patents,
with their Petition, on the 10th February 1874.
We, ALEXANDER LIGHBODY, of the City of Edinburgh, North Britain,
and WILLIAM LIGHBODY, of Bow, in the County of Middlesex, do hereby
declare the nature of our said Invention for "IMPROVEMENTS IN LAMP
BURNERS," to be as follows:-
The object of our Invention is the construction of an improved wick
tube principally applicable to paraffin or other hydrocarbon oil lamp
burners.
In constructing this improved wick tube we make it of metal by
preference of brass, but instead of making it of the ordinary flat form we
make it angular or zig-zag in shape, thereby obtaining a greater breadth

page_text: of wick within the same diameter of socket of burner than can be
attained by the usual flat form as heretofore, at the same time producing
a light equal to the argand or double wick burners hitherto in use with
greater simplicity of management than is attainable in those burners.
A gallery or shade holder is attached to the burner, and instead of a
chimney we use a glass globe only, which we prefer to make of a lotus
shape, but any other suitable form may be used. Although this burner
is principally applicable for burning hydrocarbon oils, yet it may also
be used with advantage in burning other oils.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Alexander Lighbody and William Lighbody in
the Great Seal Patent Office on the 26th June 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, wc, ALEXANDER
LIGпBODY, of the City of Edinburgh, North Britain, and 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 Tenth day of February, in the year of our
Lord One thousand eight hundred and seventy-four, in the thirty-seventh
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto us, the said Alexander Lighbody and William Lighbody, Her
special license that we, the said Alexander Lighbody and William
Lighbody, our exccutors, administrators, and assigns, or such others
as we, the said Alexander Lighbody and William Lighbody, our
executors, 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
"IMPROVEMENTS IN LAMP BURNERS," upon the condition (amongst others)
that we, the said Alexander Lighbody and William Lighbody, our
executors or administrators, by an instrument in writing under our
hands and seals, or under the hand and seal of one of us, should
particularly describe and ascertain the nature of the said Invention,
and in what manner the same was to be performed, and cause the

page_text: 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 we, the said Alexander Lighbody and William
Lighbody, do hereby declare the nature of our 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 accompanying Drawings, and to the letters and figures marked
thereon, that is to say :-
This Invention consists in the construction of an improved wick tube
principally applicable to paraffin or other hydrocarbon oil lamp burners
made of an angular or zig-zag shape, whereby a greater width of wick
within the same diameter of socket is obtained.
And in order that our said Invention may be fully understood we 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.
Figure 1 represents a vertical section of a lamp burner with our
improved wick tube in elevation, and Figuro 2, a plan of the same.
A represents the lamp burner fitted with the wick tube B which we
make of metal (brass in preference), but instead of making it of the
ordinary flat form we make it angular or zig-zag in shape as shewn,
thereby obtaining a greater breadth of wick within the same diameter of
the socket burner C than can be attained by the usual flat form as
heretofore, at the same time producing a light equal to the argand or
double wick burners hitherto in use with greater simplicity of manage-
ment than is attainable in those burners.
A gallery or shade holder D is attached to the burner A, and instead
of a chimney we use a glass globe only, which we prefer to make of a
lotus shape, but any other suitable form may be used. Although this
burner is principally applicable for burning hydrocarbon oils, yet it may
also be used with advantage in burning other oils.
Having now described and particularly ascertained the nature of our
said Invention, and the manner in which the same is or may be used or
carried into effect, we would observe in conclusion that what we consider
to be novel and original, and therefore claim as the Invention secured to

page_text: us by the herein-before in part recited Letters Patent is, constructing
the wick tubes of lamp burners of an angular or zig-zag shape, sub-
stantially as and for the purpose herein-before described and illustrated
by the Drawings.
In witness whereof, I, the said William Lighbody, on behalf of 5
myself and the said Alexander Lighbody, have to this our
Specification, set my hand and seal, this Nineteenth day of
June One thousand eight hundred and seventy-four.
WILLIAM LIGHBODY. (L.S.)