Improvements in or Applicable to Oil Lamps.
Year: 1889

page_text: Date of Application, 28th Mar., 1889
Complete Specification Left, 1st May, 1889
Complete Specification Accepted, 8th June, 1889
PROVISIONAL SPECIFICATION.
Improvements in or Applicable to Oil Lamps.
I, WILLIAM LIGHBODY of the firm of Thomas Rowatt & Sons, of 9, 10, 11 and 12
Radsworth Street, City Road, in the county of Middlesex, and of 126 Fountain
Bridge Edinburgh, in the county of Midlothian, Lamp Manufacturers, do heroby
declare the nature of this invention to be as follows:-
This invention relates to improvements applicable to round wick lamp burners
whereby the illuminating power of such burners is considerably increased; and the
invention consists in the construction and application to the inner case of the wick
tube of a perforated hollow cone which extends above the top of the wick tube.
My perforated cone may form part of the inner case of the wick tube but I find it
more advantageous to make it removable for the purpose of allowing the wick to be
trimmed.
My improved burner may be employed either in combination with what is known
as a Cosmos or necked chimney or in combination with a metal cone and any suitable
chimney.
G. F. REDFERN & Co.,
4, South Street Finsbury, London,
Agents for the Applicant.

page_text: I, WILLIAM LIGHBODY of the firm of Thomas Rowatt and Sons of 9, 10, 11 and 12
Radsworth Street, City Road, in the county of Middlesex, and of 126 Fountain
Bridge, Edinburgh, in the county of Midlothian, Lamp Manufacturers do hereby
declare the nature of this invention and in what manner the same is to be performed
to be particularly described and ascertained in and by the following statement :-
This invention relates to improvements applicable to round wick lamp burners
whereby the illuminating power of such burners is considerably increased; and the
invention consists in the construction and application to the inner case of the wick tube
of a perforated hollow cone which extends above the top of the wick tube.
My perforated cone may form part of the inner case of the wick tube but I find it
a more advantageous to make it removable for the purpose of allowing the wick to be
trimmed.
My improved burner may be employed either in combination with what is known as
Cosmos or necked chimney or in combination with a metal cone and any suitable
chimney.
In order to enable my invention to be fully understood I will describe the same by
reference to the accompanying drawing, in which,
Figure 1 represents a sectional elevation of the upper part of a lamp burner with
my cone applied thereto, and
Figure 2 represents a detached sectional view of the cone.
a represents the inner case of an ordinary wick tube, in the upper part of which I
place my cone b; the said cone being formed with a shoulder c so as to rest on the top of
the inner case of the wick tube as shewn.
d is an ordinary necked chimney known as a Cosmos chimney.
By the use of a perforated cone as above described I am enabled to considerably
increase the illuminating power of an ordinary round wick burner.
In figure 1 is shewn the shape of the flame obtained by the use of the said cone the
illuminating area of which flame is considerably greater than that which would be
obtained without the cone.
I have described and shewn my cone as being separate from the wick tube but it
will be obvious that it can form part of the inner case of the wick tube.

page_text: 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
The construction and application to the inner case of the wick tube of a round wick
lamp burner of a perforated cone in the manner and for the purpose substantially as
hereinbefore described and illustrated in the accompanying drawing.
Dated the 1st day of May 1889.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicant.