Improvements in Portable Lamps or Apparatus for Burning Volatile Hydrocarbons for Heating and Lighting.
Year: 1891

page_text: Date of Application, 17th Dec., 1891
Complete Specification Left, 25th Apr., 1892-Accepted, 28th May, 1892
PROVISIONAL SPECIFICATION.
Improvements in Portable Lamps or Apparatus for Burning Volatile
Hydrocarbons for Heating and Lighting.
We, JOHN MC AUSLAND DENNY, of Leven Ship Yard, Dumbarton, in the County
of Dumbarton, North Britain, Shipbuilder, and ROBERT HUNTER GOURLAY, of
the same place, Plumber, do hereby declare the nature of this invention to be as
follows, that is to say :-
This invention has principally for its object the construction in an improved
manner of portable heating apparatus for use by plumbers or other artificers who
require to apply concentrated heat to comparatively small objects and in various
situations in which it is necessary or advantageous for the heating appliance to be
portable. The apparatus is designed for using naphtha or other volatile hydro-
carbon as the combustible, and for vaporising it and burning the vapor. The
apparatus can also be used for lighting and when so used a hydrocarbon of good
illuminating quality may be selected for it.
Apparatus made according to the invention comprises a vessel to contain the
hydrocarbon and which is by preference in the form of a truncated cone, the larger
end of which. forms the base. The vessel is provided with a handle or handles at
one side, with a filling nozzle, with a nozzle for forcing in air; and with a nozzle for
the passage out of the hydrocarbon on its way to the burner, this last nozzle having
attached to it.a dipping pipe descending nearly to the bottom of the vessel. The
filling nozzle is made with a short internal tube which defines the level up to which
the vessel should be filled and insures the retaining of a certain quantity of air in the
upper part of the vessel. The filling nozzle is closed with a screw plug or stop-
cock, and the other two nozzles with stopcocks. A slight increase of the air
pressure inside the vessel is sufficient for forcing the hydrocarbon to the burner;
and the additional air for the purpose may be introduced in any convenient way,
even by blowing in with the mouth through a rubber or other tube.
In some cases the pipe leading to the burner is made with a joint allowing the
burner to be set in a vertical, or horizontal, or intermediate position, and is
arranged so that when the burner is vertical it is directly over the centre of
the vessel
The burner consists of an outer cylindrical shell which is perforated to admit air,
and the supply pipe is formed into a helical coil within the shell and terminates in
a part crossing the inner end in which last part there is a small orifice concentric
with the coil for the issue of the hydrocarbon vapor. The flame passes through the
coil, which it heats so as to vaporise the hydrocarbon, and extends beyond the
outer end of the burner shell. When a small or concentrated flame is required
a contracting nose piece may be put on the outer part of the burner shell.
Lugs or flanges are fixed at the upper part of the vessel to receive the legs of a
tray or holder, or pan, on or in which articles or materials to be heated can be
placed, the burner being turned into the central vertical position when to be usel
for that purpose.
Dated this Sixteenth day of December 1891
EDMUND HUNT,
Applicants' Agent.

page_text: COMPLETE SPECIFICATION.
Improvements in Portable Lamps or Apparatus for Burning Volatile
Hydrocarbons for Heating and Lighting.
We, JOHN MC AUSLAND DENNY, of Leven Ship Yard, Dumbarton, in the County
of Dumbarton, North Britain, Shipbuilder, and ROBERT HUNTER GOURLAY, of
the same place, Plumber, 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, that is to say:-
This invention has principally for its object the construction in an improved
manner of portable heating apparatus for use by plumbers or other artificers who
require to apply concentrated heat to comparatively small objects, and in various
situations in which it is necessary or advantageous for the heating appliance to be
portable. The apparatus is designed for using naptha or other volatile hydro-
carbon as the combustible, and for vaporising it and burning the vapor. The
apparatus can also be used for lighting and when so used a hydrocarbon of good
illuminating quality may be selected for it.
On two accompanying sheets of explanatory drawings examples are delineated of
apparatus made according to the invention.
Figures, and 2, Sheet, 1, are a plan and a side elevation of one example; and
Figures, 3, and 4, are a plan and a sectional elevation of part of the burner.
Figures, 5, and 6, Sheet, 2, are a plan and an elevation of a second example.
In these drawings the same reference letters and numerals are used to mark the
same or like parts wherever they are repeated.
The apparatus comprises a vessel, A, to contain the hydrocarbon, and which in
the example shown on Sheet, 1, is in the form of a truncated cone, the larger end
of which forms the base. The vessel, A, is provided with a filling nozzle, B, with
a nozzle, C, for forcing in air, and with a nozzle, D, for the passage out of the
hydrocarbon on its way to the burner, this last nozzle having attached to it a
dipping pipe, D1, descending inside nearly to the bottom of the vessel, and indicated
by dotted lines in Figure, 2. The filling nozzle, B, is made with a short internal
tube, B1, (indicated by dotted lines in Figure, 2,) which defines the level up to
which the vessel should be filled and insures the retaining of a certain quantity of
air in the upper part of the vessel. The filling nozzle, B, is closed with a screw
plug, or stopcock, and the other two nozzles, C, D, with stopcocks or valves, C1, D2.
A slight increase of air pressure inside of the vessel, A, is sufficient for forcing the
hydrocarbon to the burner; and the additional air for the purpose may be
introduced in any convenient way, as, for example, by means of a hollow rubber
ball, E, or even by blowing in with the mouth through a rubber or other tube.
The burner consists of an outer cylindrical shell, F, which is perforated to admit
air; and the part of the supply pipe within the shell, F, is formed into a helical
coil, G, and terminates in a part, G 1, crossing the bottom or inner end, in which
part, G 1, there is a small orifice, G 2, concentric with the coil, G, for the issue of
the hydrocarbon vapor. The flame passes through the coil, G, which it heats so as
to vaporise the hydrocarbon, and extends upwards beyond the outer end of the
burner shell, F. The valve, D2, for controlling the supply of hydrocarbon to the
burner, is a screw valve with which the supply can be minutely adjusted and
regulated. From the valve, D 2, a pipe, D 3, extends upwards to a T coupling, D4,
which connects it to the helical burner coil, G, and which has screwed into its
outer end a plug, H, holding in a socket formed in its inner end a bundle, H 1, of
fine wire serving as a filter for the hydrocarbon. This filter, H 1, can be quickly
taken out and cleaned whenever required.
In the top of the vessel, A, are fixed legs, J, which support a tray, holder, pan, or
casing, K, on or in which articles or materials to be heated can be placed. In the
example shown on Sheet, 1, the holder or casing, K, has in its bottom a central

page_text: opening up through which the flame extends, and the bottom has fixed to it three
studs or buttons, K 1, for supporting a pot or ladle a little clear of the bottom so
that the flame can spread under and around the pot or ladle.
The holder or casing, K, is also fitted with a sliding door, K 2, at the side, or
there may be more than one door, for inserting soldering bolts or tools or other
articles to be heated. The apparatus may be carried by means of a handle, L,
jointed on projections formed on the bottom plate of the holder, K; and to this
same plate the burner shell, F, is attached by the studs, K 1, which are screwed
through the plate and through lugs fixed on the shell, F.
The example shown on Sheet, 2, is in all essential features substantially the same
as that shown on Sheet, 1, and hereinbefore described. The burner with its
shell, F, is however, carried by its supply pipe, D3, which is provided with a
joint, D5, allowing the burner to be directed horizontally as shown in full lines, or
vertically as indicated by dotted lines, or in an inclined position. When the burner
is turned into the vertical position it is then in the vertical axis of the vessel, A,
and under the centre of a pan or holder, K, which is indicated by dotted lines.
When a small or concentrated flame is required a contracting nozzle, M, such as is
indicated by dotted lines may be put on the outer end of the burner shell, F.
For carrying the apparatus handles, L 1, are attached to the vessel, A.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what wo
claim is :-
The construction, arrangement, and combination of parts constituting the
improved apparatus for burning volatile hydrocarbons for heating and lighting,
substantially as herein before described and as shown in the accompanying
drawings.
Dated this Twenty-third day of April 1892.
EDMUND HUNT,
Applicants' Agent.