Improvements in Lamps or Apparatus for Vaporising and Burning Hydrocarbons for Lighting and Heating.
Year: 1894

page_text: Date of Application, 31st Mar., 1894
Complete Specification Left, 14th June, 1894-Accepted, 14th July, 1894
PROVISIONAL SPECIFICATION.
Improvements in Lamps or Apparatus for Vaporising and Burning
Hydrocarbons for Lighting and Heating.
We, JOHN MC AUSLAND DENNY, of Leven Shipyard, 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 for its object to improve the construction of lamps or
apparatus for vaporising and burning hydrocarbons for lighting and heating, and to
provide the same with simple and convenient means for cleaning and for removing
deposited matters.
A lamp, as made with the improvements, comprises an annular cylindrical or
slightly coned vessel of metal, in the lower end of which are three equidistant
screw-tapped apertures. Three tubes are screwed into the apertures, two of them
being comparatively short and having their bottom ends closed and squared so as
to be turnable by means of a screw key, whilst their upper ends do not project to
any extent inside the vessel. The third tube is longer; its upper end projects
inside the vessel nearly to the top; and its lower part extends below the bottoms
of the other tubes. The longer tube is the burner tube and has fixed at right
angles to it a smaller tube extending across the axis of the vessel, this smaller tube
having formed in it a jet orifice in the said axis. The longer tube extends a little
below the point of attachment of the smaller tube and is fitted with a screw plug.
The hydrocarbon is supplied by a pipe connected to the lower part of the vessel at
a point diametrically opposite to the longer or burner tube.
When the lamp is in action the flame passes through the central passage of the
vessel, and, heating that vessel, causes the vaporisation of the hydrocarbon, the
Solid matters
vapor formed passing down the longer tube to the jet orifice.
deposited from the hydrocarbon, find their way into the shorter tubes, which can
be removed and cleaned as required. The longer or burner tube can also be
cleaned on removing the screw plug at the bottom of it; or the entire tube can be
unscrewed if necessary.
There may be more than three of the downwardly projecting tubes, if thought
desirable on account of the size of the lamp or otherwise.
Dated this Thirtieth day of March 1894.
EDMUND HUNT,
Applicants' Agent.
COMPLETE SPECIFICATION.
Improvements in Lamps or Apparatus for Vaporising and Burning
Hydrocarbons for Lighting and Heating.
We, JOHN MCAUSLAND DENNY, of Leven Shipyard, 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 for its object to improve the construction of lamps or apparatus
for vaporising and burning hydrocarbons for lighting and heating, and to provide

page_text: the same with simple and convenient means for cleaning and for removing deposited
inatters.
A lamp as made with the improvements, comprises an annular cylindrical or
slightly coned vessel of metal, in the lower end of which are three equidistant
screw-tapped apertures. Three or more tubes are screwed into the apertures, two
of them being comparatively short and having the bottom ends closed and squared
so as to be turnable by means of a screw key, whilst their upper ends do not
project to any extent inside the vessel. The third tube is longer; its upper end
projects inside the vessel nearly to the top; and its lower part extends below the
bottoms of the other tubes. The longer tube is the burner tube, and has fixed at
right angles to it a smaller tube extending across the axis of the vessel, this smaller
tube having formed in it a jet orifice in the said axis. The longer tube extends a
little below the point of attachment of the smaller tube, and is fitted with a screw
plug. The hydrocarbon is supplied by a pipe connected to the lower part of the
vessel at a point diametrically opposite to the longer or burner tube.
And in order that the said invention and the manner of performing the same may
be properly understood there is hereunto appended a sheet of explanatory drawings
to be hereinafter referred to, and showing a lamp as made with the improvements.
Figure, 1, of the drawings is an elevation of the improved lamp as connected to
and carried by an oil reservoir of usual construction.
Figures, 2, and, 3, are respectively a vertical and horizontal section of parts,
drawn to a larger scale, and comprising the improvements.
In these drawings the same reference letters are used to mark the same or like
parts wherever they are repeated.
The lamp shown comprises a slightly coned vessel, A, of metal, in the lower end
of which are three equidistant screw-tapped apertures. Three tubes, B, C, and, D,
are screwed into the apertures, two, B, and, C, of them being comparatively short
and having their bottom ends closed and squared so as to be turnable by means of
a screw key, whilst their upper ends do not project to any extent inside the vessel, A.
The third tube, D, is longer; its upper end projects inside the vessel nearly to the
top; and its lower part extends below the bottoms of the other tubes, B, and, C.
The longer tube, D, is the burner tube, and has screwed to its bottom part a
T-coupling, E, which has fixed to it (at right angles to the tube, D,) a smaller
tube, F, extending across the axis of the vessel, A, this smaller tube having formed
in it a jet orifice, G, in the said axis. The bottom end of the T-coupling, E, on
the longer tube, D, is fitted with a screw plug, H. The hydrocarbon is supplied
by pipes, J, and, K, from a reservoir, L, the pipe, J, being connected to the lower
part of the vessel, A, at a point diametrically opposite to the longer or burner
tube, D. The pipe, J, is provided internally with a filtering medium, M, consisting
of lamp wick or other soft material around which are wrapped several convolutions
The oil is made to
of wire gauze or any other filtering medium may be used.
ascend from the reservoir, L, by compressed air, injected by means of a hand
pump, N, in the usual way."
When the lamp is in action the flame passes through the central passage of the
vessel, A, and, heating that vessel, causes the vaporisation of the hydrocarbon, the
vapor formed passing down the longer tube, D, to the jet orifice, G. Solid matters
deposited from the hydrocarbon, find their way into the shorter tubes, B, and, C,
which can be removed and cleaned as required. The longer or burner tube, D, can
also be cleaned on removing the screw plug, H, at the bottom of it; or the entire
tube can be unscrewed if necessary.
There may be more than three of the downwardly projecting tubes, B, C, and, D,
if thought desirable on account of the size of the lamp or otherwise.
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 we
claim is:
A Jamn on onnoratus for vanorising and burning bydrocarbon for lighting and

page_text: heating, comprising an annular vessel fixed to a supply pipe and having removable
tubes fixed in its lower end, one of which tubes has fixed to it a tube with a jet
orifice coinciding with the axis of the vessel, and at its bottom part a screw plug
substantially as hereinbefore described.
Dated this Thirteenth day of June 1894.
EDMUND HUNT,
Applicants' Agent.