Year: 1886

page_text: Date of Application, 26th Nov., 1886
Complete Left, 26th Sept., 1887
Complete Accepted, 28th Oct., 1887
I, SAMUEL HOLMES, of 9, Meards Street, Soho, in the county of Middlesex,
Mechanist, do hereby declare the nature of this invention to be as follows :-
This invention relates to improvements in that kind of lamps for burning petroleum
and the like for which Letters Patent were granted to me No. 644 dated the
14th March 1864 and No. 973 dated the 23rd March 1868.
In carrying out my present improvements, in order to isolate the burner and prevent
the liquid in the wick tube from being cooled by the liquid in the reservoir, I form
the outer tube conical in shape instead of cylindrical, whereby I considerably reduce
the space which it occupies in the reservoir.
For increasing the capillary action of the wick in its tube I form a suitable
contraction in the lower end of the wick tube.
In order to increase the heat of the vaporized liquid at the upper part of the wick
tube, I provide an inner tube arranged so as to form an annular chamber through
which I cause the vapour to pass before being burned. Or I can employ two or more
of such tubes, the object being to obtain an extended and circuitous passage for the
vapour so as to superheat it before being burned and cause the flames to burn
steadily.
Where it is required to provide the lamp with means for regulating and extinguishing
the light I fit the wick tube within another tube which then forms the burner tube so
that it can be caused to slide therein by means of a rack and pinion or other suitable
mechanism.
By this arrangement, if the cotton tube be raised to the required extent, by the
said rack and pinion, it will cover some or all of the burner holes, the flames issuing
from which will thereby be extinguished.
When adapting the said lamps to warming-stoves and cooking-kettles, I form the
upper surface of the reservoir of the lamp concave so as to act as a reflector, the
burner being so situated that its flames are in the focus of such reflector whereby the
whole of the radiated heat is reflected upwards to absorbing plates in the stove, or to
the bottom of the kettle as the case may be, instead of being absorbed by the reservoir
of the lamp.
Dated the 26th day of November 1886.
G. F. REDFERN.
4, South Street, Finsbury, London,
Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Lamps for Burning Petroleum and the like.
I, SAMUEL HOLMES, of 9, Meards Street, Soho, in the County of Middlesex,
Mechanist, 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 improvements in that kind of lamps for burning petroleum
and the like for which Letters Patent were granted to me No. 644 dated the
14th March 1864 and No. 973 dated the 23rd March 1868.
In order to enable my invention to be fully understood I will describe how it
can be carried into practice by reference to the several figures of the accompanying
drawing.
In carrying out my present improvements in order to isolate the burner and
prevent the liquid in the wick tube from being cooled by the liquid in the reservoir,
I form the outer tube conical in shape instead of cylindrical whereby I considerably
reduce the space which it occupies in the reservoir as shewn in Figure 1 which is a
vertical section of a lamp for burning petroleum and the like embodying this part of
my improvements.
a represents the conical outer tube which is connected to the wick tube at the
lower end as shewn, e representing the space between the two tubes; the conical tube
is advantageously screwed into the reservoir d of the lamp which is provided with a
screw threaded boss e for this purpose; is a tube placed between the conical tube a
and the reservoir d and formed with a number of holes gg for the purpose of lessening
the liability of the liquid in the lamp to splash or dash about when the lamp is being
carried or moved; is a pipe for supplying air to the reservoir d.
For increasing the capillary action of the wick in its tube I form a suitable
contraction in the lower end of the wick tube so as to produce a compression of the
wick at this point.
In order to increase the heat of the vaporized liquid at the upper part of the wick
tube I provide an inner tube k arranged so as to form an annular chamber / through
which I cause the vapour to pass before being burned.
Or as will be understood without illustration I can employ two or more of such
tubes, the object being to obtain an extended and circuitous passage for the vapour
so as to superheat it before being burned and cause the flames to burn steadily.
Where it is required to provide the lamp with means for regulating and extinguishing
the light 1 fit the wick tube within another tube which then forms the burner tube so
that it can be caused to slide therein by means of a rack and pinion or other suitablo
mechanism.
This arrangement is illustrated in Figure 2 which represents a vertical section of
the wick tube of a lamp provided with this improvement.

page_text: b is the wick tube and b¹ the burner tube in which the wick tube is fitted ; m is
the rack which is fixed at n to the inner or wick tube 6 and o is the pinion which
works in the boss of the outer or burner tube b¹.
By this arrangement if the wick tube be raised to the required extent, by the said
rack and pinion it will cover some or all of the burner holes p p the flames issuing
from which will thereby be extinguished.
When adapting the said lamps to warming-stoves and cooking-kettles, as shown
in figure 3 which is a vertical section of a warming stove arranged to be heated by a
lamp of the kind to which this invention relates, I form the upper surface of the
reservoir of the lamp concave as represented at 7 so as to act as a reflector, the
burner being so situated that its flames are in the focus of such reflector whereby
the whole of the radiated heat is reflected upwards to absorbing plates, in the stove
(or to the bottom of the kettle as the case may be) instead of being absorbed by the
reservoir d of the lamp.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is
1. Providing the wick tubes of lamps of the kind herein referred to with a conically
shaped outer tube substantially as and for the purpose herein set forth.
2. Providing lamps of the kind herein referred to with a wick tube formed with a
contraction in its lower end substantially as and for the purpose set forth.
3. Forming the wick tubes of lamps of the kind herein referred to with an inner
tube or tubes so as to form an extended and circuitous passage for the vapour generated
by the lamp for the purpose set forth.
4. A lamp of the kind herein referred to having the wick tube fitted within
another tube which then forms the burner tube so that the wick tube can be caused
to slide therein by suitable means such as those hereinbefore described for the purpose
set forth.
5. Forming the upper surface of the reservoirs of lamps of the kind herein referred
to, when such lamps are adapted for use with warming stoves and cooking-kettles,
concave so as to act as a reflector substantially in the manner set forth.
6. The improved lamps for burning petroleum and the like hereinbefore described
with reference to the various figures of the accompanying drawing.
Dated the 26th day of September 1887.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicant.