An Improved Incombustible Lamp Wick.
Year: 1891

page_text: Date of Application, 15th Dec., 1891
Complete Specification Left, 5th Mar., 1892-Accepted, 10th Sept., 1892
PROVISIONAL SPECIFICATION.
An Improved Incombustible Lamp Wick.
I, JOSEPH COLIN FRANCIS JOHNSON, of Pirie Street, Adelaide in the Province
of South Australia, Mining Agent, do hereby declare the nature of my said inven-
tion for AN IMPROVED INCOMBUSTIBLE LAMP WICK, to be as follows:-
My invention relates to an improved construction of wicks for use in oil burning
and other lamps.
The object of my invention is to provide an incombustible wick of inexpensive
material which shall not require to be trimmed from time to time. I accomplish
this purpose by providing a case or envelope formed of wire gauze or woven wire,
or of asbestos thread, or other suitable material in the form of gauze or netting.
This case or envelope is constructed of such size and shape as may be suitable to
the particular description of lamp for which it is intended and to its upper edge is
given that form most suitable for the shaped flame which may be desired. The
gauze or network casing or envelope is filled with the material known as slag wool,
mineral wool, or silicate cotton, that is to say a material produced by blowing
steam or air through silicious material in a molten state. The lower end of the
casing or envelope being closed the wick is ready for use.
Though preferring slag wool for the filling of the casing or envelope I may use
in conjuction with such material, asbestos or other suitable incombustible material.
For this purpose the short fibred portions of asbestos washed out whilst preparing
that material for manufacture are especially suitable.
From their special construction, wicks made according to my invention cannot
require trimming and need only to have the carbon removed by means of a soft
brush in order to maintain them in perfect order for the purpose for which they
are intended.
I wish it to be understood that I do not confine myself to any special material
for the formation of the casing or envelope it being sufficient for my purpose that
it shall be of gauze or netting of any incombustible material, nor to any shape or
method of manufacture of the same.
1001
J. C. F. JOHNSON.
W. P. Thompson & Boult,
Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improved Incombustible Lamp Wick.
I, JAMES COLIN FRANCIS JOHNSON, of Pirie Street, Adelaide in the Province
of South Australia, Mining Agent do hereby declare the nature of my invention
for "AN IMPROVED INCOMBUSTIBLE LAMP WICK," 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 an improved construction of wicks for use in oil burning
and other lamps.
The object of my invention is to provide an incombustible wick of inexpensive
material which shall not require to be trimmed from time to time. I accomplish
this purpose by providing a case or envelope formed of wire gauze or woven wire,
or of asbestos thread, or other suitable material in the form of gauze or netting.
This case or envelope is constructed of such size and shape as may be suitable to
the particular description of lamp for which it is intended and to its upper edge is
ID 1

page_text: given that form most suitable for the shaped flame which may be desired. The
gauze or network casing or envelope is filled with the material known as "slag
wool," mineral wool, or silicate cotton, that is to say a material produced by blowing
steam or air through silicious material, in a molten.state. The lower end of the
casing or envelope being closed the wick is ready for use.
I find that my invention answers its purpose if in place of a full length wick it is
applied in the form of a tip to any ordinary cotton, wick In this case the, lower
end of the gauze or network casing must be left open and the head, of the cotton
wick introduced so as to come in contact with the incombustible material; the
casing being then secured to the cotton wick.
Though preferring slag wool for the filling of the casing or envelope I may use
in conjunction with such material, asbestos or other suitable incombustible material.
For this purpose the short fibred portions of asbestos washed out whilst preparing
that material for manufacture are especially suitable..
I may also provide the tip or end piece with an outer sleeve or casing of mica in
the form of gauze or network or may construct of mica the tip or end-piece itself
for containing the incombustible material. The use of the mica has the further
advantage of preventing the heating of the burner of the lamp.
In order that my invention may be the better understood reference may be made
to the accompanying drawings in which
Fig. 1. is a side elevation of a full length wick constructed, according to my
invention.
Fig. 2. a top view. of the same.
Fig. 3. a side elevation of the tip of a wick constructed in accordance with my
invention, as applied to any wick of ordinary construction.
From their special construction, wicks made according to my invention cannot
require trimming and need only to have any accumulation of carbon removed by
means of a soft brush in order to maintain them in perfect order for the purpose
for which they are intended.
I wish it to be understood that I do not confine myself to any special material
for the formation of the casing or envelope, it being sufficient for my purpose that
it shall be of gauze or netting of any incombustible material; nor to any shape or
method of manufacture of the same.
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 herein,described, incombustible lampwick consisting essentially of a casing
or envelope formed of gauze, or netting of mica or other incombustible material and
filled with slagwool either alone or in combination with asbestos or other similar
suitable incombustible material in the form of fine fibres.
2. The combination with an ordinary lamp wick of cotton or other similar
material, of a tip.or. end piece consisting essentially of a casing or envelope formed
of gauze or netting of nica or other incombustible material and filled with slagwool
either, alone or in, combination with asbestos or other similar, suitable, incombustible
material in the form of fine fibres substantially as herein described, and, for the
purpose indicated..
3. In the construction of incombustible lamp wicks, the combination witha, tip or
end-piece consisting essentially of a casing or envelope formed of gauze or netting,
of incombustible material and filled with slag wool either alone or in combination
with asbestos or, other similar suitable material in the form of fine fibre, of an outer
sleeve or casing, of mica substantially as herein described.
Dated this Twentieth day, of January 1905
J., C...F. JOHNSON,
W. P: Thompson & Boult,.
Agents for the Applicant: 11.