Improvements in or appertaining to Wicks for Lamps.
Year: 1890

page_text: Date of Application, 25th July, 1890
Complete Specification Left, 27th Apr., 1891-Accepted, 30th May, 1891
PROVISIONAL SPECIFICATION.
Improvements in or appertaining to Wicks for Lamps.
I, MAXWELL EDWARDS ELDER of Mosley Villa, Three Tuns Lane, Formby
in the County of Lancaster, Engineer, do hereby declare the nature of this
invention to be as follows:-
This invention relates to wicks for mineral or other oil lamps, and it has for its
object the providing of said wicks with tips which shall be incombustible, or nearly
so, and which shall not require to be constantly trimmed, or cleaned.
In carrying my invention into effect, I form a cap or tip of asbestos, adapted to
fit on to or over the tip of the wick. This cap is made sufficiently porous to permit
of the oil finding its way through it from the wick. Being incombustible or nearly
so, it seldom or never requires trimming, or cleaning, and, as the flame does not
come in contact with the wick proper, the latter remains practically unaltered.
The asbestos tip may be a separate piece adapted to be slipped on to the wick, or
it may simply be a piece of asbestos material, woven or otherwise secured to or
around the end of the wick.
The invention is applicable to all kinds of wicks.
Dated this 24th day of Jul 1890
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or appertaining to Wicks for Lamps.
I, MAXWELL EDWARDS ELDER of Mosley Villa, Three Tuns Lane, Formby
in the County of Lancaster, Engineer, do hereby declare the nature of thir
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 in wicks for mineral or other oil or spirit
burning lamps, and the object of my improvement is to provide said wicks with tips
which shall be incombustible or nearly so, and which shall not require to be often
trimmed or cleaned.
In the accompanying drawings =
Figures 1 and 2 are respectively a side elevation and a section showing the
invention as applied to a flat wick, and
Figure 3 is a section similar to Figure 2, showing the invention as applied to a
flat wick with a flat internal core.
Figure 4 is a similar section showing a modification.
Similar letters refer to similar parts.
Referring first to Figures 1 and 2 :-
A, represents a piece of ordinary flat woven wick. At the top of the wick and
overlapping its sides, is the cap or tip B of asbestos of a sufficiently porous nature
to permit of the oil finding its way through it from the wick to the flame. The tip
is preferably composed of asbestos cloth, and may be attached in any convenient
manner to the wick. In Figure 1, it is shown as being fastened to the wick by
stitches, such as b, which, if desired, may be of asbestos thread or other material.
The asbestos tip B, instead of being permanently secured in place, may be quite
separate, and may be slipped on to or removed from the wick, or, if desired, it may
be woven in one piece with the body of wick A.

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How to figure
The body of the wick, in this case, consists of an outer piece A, which may be
of ordinary woven material, and of an inner core a of similar stuff. The cap or
tip B of asbestos is bifurcated at its lower part in a similar manner to that shown
in Figure 2. In this case, however, the wing portions, formed by the bifurcation,
instead of being placed exteriorly to the wick body, are so disposed that they lie
between the outer picce A. and the inner core a, so that, when the wick is in use, it
is provided with a side feed of oil in addition to the central feed through the pores
of the asbestos.
In the manufacture of this wick, I prefer to allow the outer piece A. to surround
the tip B to such a height as to be level with its upper edge, as shown in dotted
lines. When in use, this outer piece will burn down for a certain distance. There
is thus no possibility of the piece A stopping short of the base of the flame, and
the advantage of the side feed can be utilised to the fullest extent. The tip B may
be attached to the body of the wick by stitches or otherwise, as in the construction
illustrated in Figures 1 and 2.
Referring to Figure 4 :-
A, is the body of the wick, and B is the tip of asbestos (preferably of asbestos
cloth) which surrounds the wick in a somewhat similar manner to that shown in
Figures 1 and 2.
It is in this case, however, not solid at the top, but contains a 2
space extending to the wick body A. This space is filled with fibrous asbestos b¹.
The space preferably extends the full width of the wick
The tip, being incombustible or nearly so, seldom requires trimming or cleaning,
and, as the flame does not come in contact with the wick proper (except at the
extreme base in the form shown in Figure 3) the wick remains practically unburnt
and may be re-tipped when required.
I wish it to be understood that the invention is not confined to flat wicks, but is
applicable to all kinds of wicks, whether cylindrical, circular, oval, square or other
shape, and either spun, woven or knitted.
Having now particularly described and ascertained the nature of my said a
invention and in what manner the same is to be performed, I declare that what I
claim is :-
1. An incombustible tip for lamp wicks formed of porous asbestos and adapted to
be placed upon or within the upper end of the wick and obtain its supply of
illuminant therefrom.
2. In combination with an ordinary lamp wick, a tip or cap of asbestos securely
attached thereto, and sufficiently porous to permit of the oil finding its way through
it from the wick to the flame, substantially as described.
3. The combination, with a lamp wick having an internal absorbent core
surrounded by an outer absorbent case, of a tip of porous asbestos securely attached 4
thereto and partially enclosed between the core and outer case, substantially as
described.
Dated this 25th day of Anvil 1801
Dated this 25th day of April 1801
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Nottingham, and London, Patent Agents.