An Improved Burner for Miners' Safety Lamps.
Year: 1892

page_text: Date of Application, 12th Nov., 1892
Complete Specification Left, 12th Aug., 1893-Accepted, 16th Sept., 1893
PROVISIONAL SPECIFICATION.
An Improved Burner for Miners' Safety Lamps.
We, THOMAS OXENDALE ROBSON of Redheugh Colliery, Gateshead and
MARTIN WALTON BROWN of Low Fell near Gateshead both in the County of
Durham, Mining Engineers, do hereby declare the nature of this invention to be as
follows:
--
This invention relates to an improved burner for miners' safety lamps and has for
its object a novel form or construction of burner which shall enable mineral oils
such as petroleum (preferably in a more or less refined condition) to be burnt in
miners' lamps instead of the more costly vegetable and animal oils.
It is well known that an ordinary burner fitted with a wick burning petroleum
oil is quite inefficient as a means of lighting but by altering the form of the burner
as hereinafter described a mineral oil such as petroleum may be burnt so as to give
a comparatively brilliant light.
To effect this result in the case of circular burners we may bell-mouth the
burner or a bell-mouthed burner may be divided into two or more segments with
intervening spaces and the curve of the bell-mouth may vary in its radius till it
becomes practically straight. The spaces aforesaid if found necessary or desirable
may or may not be perforated.
In the case of flat burners we prefer to extend the edges or semi-circular or
other ends of the burner upwards and in an outward or expanding direction and in
intermediate forms a certain amount of upward and outward extension of the wick
tube whether circumferentially or only partially so will have the desired effect.
Petroleum or equivalent mineral oil as above mentioned when burnt in a lamp
having a burner of the shape or shapes herein foreshadowed thus yields its volatile
matter which seems to be more or less attracted by the projecting metal of the
burner and to be thrown off again into a central flame where it becomes consumed
acting as an efficient illuminant.
Dated this 11th day of November 1892.
A. CRAWHALL CHAPMAN,
Newcastle-on-Tyne, Patent Agent.
COMPLETE SPECIFICATION.
An Improved Burner for Miners' Safety Lamps.
We, THOMAS OXENDALE ROBSON of Redheugh Colliery, Gateshead and
MARTIN WALTON BROWN of Low Fell near Gateshead both in the County of
Durham, Mining Engineers, 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 an improved burner for miners' safety lamps and has for
its object a novel form or construction of burner adapted to burn mineral oil such as
petroleum in miners' safety lamps instead of more costly vegetable and animal oil.
It is well known that an ordinary burner fitted with a wick burning petroleum
oil is inefficient as a means of lighting but by altering the form of the burner as
hereinafter described a mineral oil such as petroleum may be burnt so as to give a
brilliant light and smokeless flame.
We will fully describe our invention with reference to the accompanying drawings
in which
Figure 1 shows a side elevation and Figure 2 a plan of a burner constructed in

page_text: accordance with our improvement and in the following description like marks of
reference designate like parts.
Referring to the drawings a is a metal or other equivalent wick-tube fitted upon
or to the oil reservoir a¹ as shown. At the top of such a wick tube we fit curved
or expanding horns a projecting above the ordinary level of the wick tube,
a² being a slot in the tube for adjusting the height of the wick at by means of the
pricker a.
The curved or partially bell-mouthed or horned burner as above described may
be further divided into one or more segments or parts c at the side of the wick-tube
separated from each other and from the wick-tube, when there are more than one
of such segments or parts, but these spaces may by means of perforations c¹ be
connected so that the volatilised oil or vapour from the reservoir may pass either
directly up the passages c or partly up these passages and partly through the
perforations and up the wick-tube to the vicinity of the flame where it will be
burnt.
The improved burner when burning petroleum or other mineral oil will be found
to give off little or no smoke and greater illuminating power than an ordinary
burner burning the same oil.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is
1. In lamp burners the combination with the wick-tube of horns a² and passages c
the said passages being separated from the wick-tube itself or connected with the
wick-tube by perforations the several parts being arranged and adapted to operate
substantially as herein set forth.
Dated this 0th day of August. 1893.
A. CRAWHALL CHAPMAN,
3, St. Nicholas Buildings, Newcastle-on-Tyne, Patent Agent.