Year: 1887

page_text: Date of Application, 28th July, 1887
Complete Left, 9th Sept., 1887
Complete Accepted, 4th Oct., 1887
We POMPÉE DE BONDINI Gentleman, and THEODORE TUBINI Merchant, both of
Constantinople do hereby declare the nature of this invention to be as follows:-
Our Invention has for its object to provide an incombustible wick for petroleum and
other oil lamps, that is to say a wick which shall not be carbonised and consumed
while the lamp is burning.
The Invention is applicable both to flat and round wicks.
The Invention consists in a wick whose end is furnished with a protector in the form
either of a metallic sheath or cap whose entire surface is perforated with a number of
holes, or of a hood or network of wire cloth. The oil which rises by capillary
attraction to the extreme end of the wick passes through the apertures in the cap or
protector and burns on the surface of the latter without consuming the wick itself.
The wick may either completely fill the cap or the latter may contain an incom-
bustible surface such as asbestos suitably prepared and interposed between the end of
the wick and the top of the cap. The wick may also be built up of several
relatively thin wicks placed side by side and combined with intermediate metallic
pieces of about the same size as the wicks, the whole being introduced into the
protector. In the latter case, the flame imparts an intense heat to these metallic
pieces and the oil is rapidly volatilized and produces a powerful white flame.
1 1
320
ր T 1
1007
P. DE BONDINI.
T. TUBINI.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.

page_text: We, POMPÉE DE BONDINI (Gentleman) and THEODORE TUBINI (Merchant) both of
Constantinople, Turkey, 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 :-
Our Invention consists of a non-consumable lamp wick which will require no
trimming.
The Invention consists essentially in enclosing the upper end of the wick (whether
flat or round) in a capsule or sheath of wire gauze or perforated sheet metal, the wick
being either entirely of cotton or tipped with asbestos. This metallic sheath
completely encloses the upper end of the wick and yet gives passage to the oil or
vapors. If the wick be entirely of cotton, the extreme upper end becomes carbonized
for a short distance within the sheath when first lighted, but being tightly enclosed by
the incombustible sheath it retains its shape and capillary properties and therefore
remains eminently suitable for conveying the oil to the flame, the carbonized portion
becoming gradually hardened by continued use without however, losing its porosity,
but the carbonization proceeding no further down the wick.
Two or more thin wicks separated by intermediate pieces of thin sheet metal, may
be combined to form a single wick, the whole being enclosed by a sheath as before,
the pieces of metal acting as heat conductors to promote the vaporization of
the oil.
Reference is to be had to the accompanying drawings forming part of this
specification in which figure 1 is a face view and vertical section of the upper end of
a flat wick provided with an asbestos tip and enclosed in a wire gauze sheath.
Figure 2 shews an annular wick with a similar sheath. Figure 3 shews a face view
and vertical section of a flat wick with a perforated sheet metal sheath the asbestos
tip being dispensed with in this case. Figure 4 is a vertical section of a compound
or built up wick, with intermediate pieces of sheet metal and enclosed in a wire gauze
sheath.
a is the wick and 6 the sheath. The latter is made of iron, platinum, brass, or other
suitable metal and covers the wick for about an inch of its length. If of wire cloth,
it would be folded or bent over the top edge of the wick and lapped around the lateral
edges of the wick and firmly secured in position by sewing with wire at the lateral
and lower edges of the sheath. If an asbestos tip be employed, it would be in a
fibrous matted condition and the upper frayed edge of the cotton wick would simply
abut against it. The asbestos would fill the top of the sheath and extend about half
an inch down, as indicated by the blackened portion d in figure 1; the sheath in
either case tightly enveloping the top of the wick.
In figure 3, the sheath is made of thin perforated sheet metal tightly clamped on
the wick and secured by wire sewing. The asbestos may be applied in the same way
as in figure 1.

page_text: In figure 4, there are five thin flat cotton wicks with intermediate plates c of thin
sheet metal of the same width as the wicks and extending from the top of the
sheath down to about the lower edge thereof. The same construction may be applied
to an annular wick.
The preferred gauge for the wire gauze is about thirty meshes to the lineal inch,
and the perforated metal would be of approximately corresponding gauge.
Having now particularly described and ascertained the nature of the said invention
and in what manner the same is to be performed; we declare that what we
claim is ;-
1. The combination with a lamp wick of a reticulated or perforated metallic
sheath closely embracing the top of the wick, substantially as and for the purpose
specified.
2. The combination with a lamp wick made of combustible fibrous material, of a
tip made of fibrous incombustible material and of a reticulated or perforated metallic
sheath enclosing the incombustible tip and uniting it to the combustible wick,
substantially as specified.
3. A lamp wick composed of two or more cotton wicks with intermediate metallic
pieces the whole being enclosed and bound together by a reticulated or perforated
inetallic sheath, substantially as specified.
Dated this 9th dow of Santambon 1007