Improvements in Lamps.
Year: 1890

page_text: Date of Application, 24th July, 1890
Complete Specification Left, 19th Aug., 1890-Accepted, 20th Sept., 1890
PROVISIONAL SPECIFICATION.
Improvements in Lamps.
I, ALEXANDER LIGHBODY, of the firm of Thos. Rowatt & Sons, 126, Fountain-
bridge, Edinburgh, in the County of Midlothian, and 12, Radsworth Street, City
Road, in the County of London, Lamp Manufacturers, do hereby declare the nature
of this invention to be as follows:-
My invention relates to lamps of the kind in which a circular wick is employed
which wick is adapted to slide upon a suitable guide tube.
Hitherto the means employed for raising and lowering such wicks have been
defective inasmuch as that they frequently failed to move the wicks uniformly thereby
preventing proper flames being obtained.
My invention has for its object to obviate these defects and for this purpose I
place within the wick what I term a carrier, which is advantageously formed of a
split tube suitably roughened on its outer surface, which roughened surface when the
carrier is placed within the wick and is fitted to the burner and fountain bites into
the wick so as to ensure its being raised and lowered uniformly.
Instead of employing a split tube I can employ a tube without a split and the
roughening of the carrier may sometimes be dispensed with.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Lamps.
I, ALEXANDER LIGHBODY, of the firm of Thos. Rowatt & Sons, 126, Fountainbridge,
Edinburgh, in the County of Midlothian, and 12, Radsworth Street, City Road, in
the County of London, 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 :-
My invention relates to lamps of the kind in which a circular wick is employed,
which wick is adapted to slide upon a suitable guide tube.
Hitherto, the means employed for raising and lowering such wicks have been
defective, inasmuch as that they frequently failed to move the wicks uniformly,
thereby preventing proper flames being obtained.
My invention has for its object to obviate these defects, and for this purpose I
place within the wick what I term a carrier, which is advantageously formed of a
split tube suitably roughened on its outer surface, which roughened surface when the
carrier is placed within the wick and is fitted to the guide tube of the fountain and
the burner put in position on the fountain, bites into the wick when the same is
pressed against the carrier by the pinions so as to ensure the wick being raised and
fowered uniformly.
In order to enable my invention to be fully understood I will describe the same
with reference to the accompanying drawing, in which
Figure 1 represents a horizontal section of the form of carrier which I prefer to
employ for carrying out my invention.
Figure 2 is a vertical section of the same, and
Figure 3 is a vertical section of the guide tube of the fountain of a lamp shewing
my carrier applied thereto. This figure also shews the wick and the toothed pinions
employed for raising the same.
a represents my carrier which in the drawings is shown as being made of a split
Γη

page_text: tube of thin spring sheet metal, the surface of the tube being roughened by means
of perforations b formed from the inner surface, To make use of the carrier it
3somewhat compressed so as to reduce its diameter and thereby allow of it being
introduced into a circular wick c, whereupon the carrier will spring open into its
normal position, its roughened surface biting into the interior surface of the wick.
The carrier with the wick can then be easily passed over the guide tube d of the
fountain, and it will be obvious that, when the pinions e are turned in the usual
manner, the wick c will be well gripped between the carrier a and the pinions, and
will be raised and lowered uniformly.
I have described and illustrated in the drawing my carrier as consisting of a split
tube of roughened spring sheet metal and this form I have found to give good
results in practice. I sometimes however employ a tube which is not split, and in
some cases also the roughening of the carrier may be dispensed with.
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 :-
(1). The combination with a circular lamp wick of a carrier placed within the wick
and adapted to slide upon the guide tube of the fountain in the manner and for
the purposes substantially as herein before described.
(2). A carrier for circular lamp wicks consisting of a split tube of spring sheet
metal, roughened on its outer surface, adapted to bite into the interior surface of the
circular wick and to slide upon the guide tube of the fountain of a lamp, substantially
as hereinbefore described and illustrated in the several figures of the accompanying
drawing.
(3). The manufacture and use of carriers for circular lamp wicks constructed and
operating substantially as hereinbefore described.
Dated the 19th day of August 1890.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.