Year: 1888

page_text: Date of Application, 8th Mar., 1888
Complete Specification Left, 10th Dec., 1888
Complete Specification Accepted, 22nd Jan., 1889
I, HENRY HARRISON DOTY, of 446 Strand, in the County of Middlesex, Light
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to spray-lamps or apparatus for burning bydrocarbon or other
oils in the form of spray.
The main object of my invention is to provide a portable apparatus for burning
hydrocarbon or other oils, in the form of spray, especially adapted for railway, naval,
military or other signalling. My said invention comprises various other improvements
hereinafter set forth.
I provide a cylindrical or other suitably shaped reservoir, or receptacle having
a convenient handle and a hole or aperture fitted with a screw-ping, by means of which
the said reservoir or receptacle can be filled with oil. A cylindrical or other passage
is formed in the centre of the said reservoir or receptacle, through this passage
passes a pipo or tube, the upper extremity of which is provided with a nozzle
projecting vertically above the said reservoir, or receptacle.
The other extremity of the said pipe or tube passes through a rim or flange round
the lower part of the said reservoir, or receptacle, and is provided with a union for
attaching an India-rubber or other flexible tube or pipe. This india-rubber tube or
pipe is connected at the other extremity to the pipe or nozzle of a bellows herein-
after described, for producing a jet of air. The rim or flange hereinbefore mentioned
is preferably provided with holes or apertures for the admission of air, when the
apparatus is placed upon the ground, or elsewhere. At one side of the air nozzle
herein before described is provided a lamp, having a separate oil reservoir, placed
inside the said main reservoir, or receptacle, so that the said lamp can be fed with
paraffine or other volatile oil, whilst the main reservoir or receptacle is filled with a
heavy or hydrocarbon oil.
Above the said air nozzle is a nozzle attached to a suitably bent pipe, which passes
through a hole in the reservoir, or receptacle, and dips into the oil contained in the
same. The said oil nozzle is placed at right angles to the air nozzle, and is supported

page_text: by the bend in the said pipe resting in a slot provided in a bracket attached to the
said reservoir, or receptacle. The height of the oil nozzle above the air nozzle is
regulated by raising or lowering the same in the slot in the said bracket. The size of
the said nozzle can moreover be expeditiously altered, by passing another nozzle and
pipe through the said aperture and slot. To prevent any foreign matter contained in
the oil from passing up through the pipe to the oil nozzle, a guard composed of wire
gauze, perforated sheet metal or the like is provided.
A vertical shield or guard is also placed over the nozzles, and the lamp herein before
described. This shield or guard is divided by a partition into two compartments, in
one of which are the said nozzles and in the other the lamp, a suitable hole or aperture
is moreover formed in the said partition. The compartment containing the lamp is
closed at the upper extremity and provided with suitable air holes, the other compart-
ment is open at the upper extremity. The shield or guard is preferably hinged or
jointed so that it can be thrown back when required.
To produce a jet of air through the air nozzle I prefer to employ a bellows, that can
be strapped to the waist or shoulder of the person operating the apparatus, and can be
actuated by pressing upon the same with the elbow. The pipe or nozzle of the said
bellows is connected to the pipe of the air nozzle by means of an india-rubber, or
other elastic pipe or tube as herein before described.
The operation of my said apparatus is as follows, that is to say. The main reservoir
or receptacle and the lamp reservoir are filled with oil, and the lamp lighted. Upon
pressing upon the said bellows a jet of air is forced through the air nozzle, which
passing by the oil nozzle, sucks or draws up oil through the said nozzle, and delivers
the same in the form of spray in the nozzle compartment, of the shield or guard,
herein before described. The flame from the lamp is then sucked in through the hole or
aperture herein before mentioned, in the partition between the compartments and the
said spray being lighted thereby issues in a powerful vertical column of flame, from
the nozzle compartment of the said shield or guard. The duration of the said column
of flame can be regulated at will, by the pressure exerted upon the bellows.
If it is desired to produce a horizontal column of flame instead of a vertical one,
the positions of the nozzles are reversed, and the shield or guard over the same is
placed in a horizontal position. In this case the lamp is provided with a separate
shield, or guard, similar to that herein before described, placed in a vertical position
alongside that surrounding the nozzles, and communicating by means of a suitable
aperture with the same.
When paraffine or other light or volatile oils are employed in my apparatus, I
sometimes dispense with the separate oil reservoir for the lamp, and feed the same
from the main oil reservoir or receptacle.
When it is desired to obtain a column of flame for lighting, or heating purposes the
bellows hereinbefore described, is replaced by an air pump, or other suitable means,
for obtaining a constant jet of air.
In some instances instead of the jet of air herein before described, I can employ a jet
of steam for the same purpose.
I can moreover if desired employ any convenient means for maintaining a supply of
oil in the reservoir, or receptacle, herein before described, from a tank, reservoir or
other oil supply.
It is obvious moreover that I can somewhat modify the construction of my said
apparatus without in any way departing from the nature of my said invention.
Dated this 8th day of March 1888
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: Improvements in Apparatus for Burning Hydrocarbon or other Oils
for Signalling or other Purposes.
I, HENRY HARRISON DOTY, of 446 Strand, in the County of Middlesex, Light
Engineer 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 :—
My invention relates to spray-lamps or apparatus for burning hydrocarbon or other
oils in the form of spray.
The main object of my said invention is to provide a portable apparatus for this
purpose which is more especially adapted for railway, naval military or other
signalling. My improved apparatus is, however, applicable for other purposes.
In the accompanying drawing I have shown how my said invention may be
conveniently and advantageously carried into practice.
Figure 1 is a vertical longitudinal central section showing one form of my said
invention.
Figure 2 is a plan of the same.
Figure 3 is a vertical longitudinal central section and,
Figure 4 is a plan showing a modification hereinafter described.
Like letters indicate corresponding parts throughout the drawing.
A is an oil reservoir or receptacle, B B are handles for convenience of carrying
the same.
The cylindrical or other suitably shaped reservoir or receptacle A is provided with
a bole or aperture a fitted with a screw-plug a' by means of which the said reservoir
or receptacle can be filled with oil. A cylindrical or other passage b is formed in the
centre or other suitable part of the said reservoir or receptacle, through this passage
passes a pipe or tube c the upper extremity of which is provided with a nozzle c¹
projecting vertically above the said reservoir or receptacle A. The clearance between
the pipe or tube c and the cylindrical passage b forms a suitable air space or passage.
The other extremity of the said pipe or tube passes through a rim or flange a²
around the lower part of the said reservoir or receptacle A, and is provided with a
union c for attaching thereto an India-rubber or other flexible tube or pipe. This
india-rubber tube or pipe is connected at the other extremity to the pipe or
nozzle of a bellows, or it can be blown into by the mouth so as to produce a jet of
air from the nozzle c¹. The rim or flange a is preferably provided with holes or
apertures a for the admission of air when the apparatus is placed upon the ground,
or in any other position that prevents the free passage of air underneath the said
reservoir or receptacle. At one side of the air nozzle c¹ is provided a lamp d.
Above the said air-nozzle c¹ is a nozzle e attached to a suitably bent pipe f which

page_text: passes through a hole or socket
in the reservoir or receptacle A and dips into the
oil contained in the same. The said oil-nozzle e is placed at right angles to the air-
nozzle c¹ and is supported by the bend in the said pipe resting in a slot h¹ provided
in a bracket attached to the said reservoir or receptacle A. The vertical adjustment
of the oil-nozzle e to regulate its height above the air nozzle c¹ is effected by raising
or lowering the same in the hole or socket g and in the slot in the said bracket h, and
the lateral adjustment of the said nozzle e is secured by screwing the latter more or
less upon the pipe f. The size of the nozzle e can, moreover, be expeditiously altered
by simply passing a pipe having a different sized nozzle through the aperture g and
slot . To prevent any foreign matter contained in the oil from passing up through
the pipe to the oil-nozzle e, a guard composed of wire-gauze, perforated sheet
metal or the like is provided.
A vertical tubular shield or guard firmly attached to the upper part of the
reservoir A is placed over the nozzles c¹ and e.
The lamp is provided with a casing d' hinged at d² to the upper portion of the
reservoir A and provided with a suitable aperture d³ formed in the said casing d¹
which coincides with another aperture in the tubular shield or guard when the
casing dis closed. Suitable air-holes dare, moreover, provided in the casing d'
which is closed while the shield or guard is open at the upper extremity. i are
air-holes for the admission of air to the said shield or guard i.
When the signals are intended to be seen ahead or only from one direction, I
sometimes combine, with the signalling lamp, a cowl or hood j provided with hinges
or joints . The pins of the said hinges or joints are so arranged that they can
be withdrawn when desired. By this arrangement either of the said pins can be
withdrawn and the said cowl or hood j turned upon the other hinge or joint, or both
the said pins can be withdrawn and the cowl or hood j entirely removed from the
apparatus. The cowl or hood j is, moreover, provided with a door hinged at j²,
which can be opened when it is desired to show a signal that can only be seen from
the front of the apparatus. When not required, the cowl or hood can be removed
in the manner hereinbefore described, and the apparatus used for ordinary signalling
or lighting purposes.
To produce a jet of air through the air-nozzle 1 sometimes employ any ordinary
bellows so arranged that it can be strapped to the waist or shoulder of the person
operating the apparatus, and actuated by pressing upon the same with the elbow.
The pipe or nozzle of the said bellows is connected to the pipe of the air-nozzle by
means of an india-rubber, or other elastic pipe or tube, or the said pipe or tube may
be employed to produce a jet of air by the mouth of the operator.
The operation of the apparatus is as follows, that is to say-The main reservoir
or receptacle A is filled with suitable oil and the lamp d is lighted. Upon producing
a jet of air by means of a bellows or by the mouth of the operator, the said jet is
forced through the air-nozzle el which passing by the oil nozzle e sucks or draws up
oil through the latter, and delivers the same in the form of spray in the tubular shield
or guard. The flame from the lamp d is sucked in through the apertures ³, 1, and
the said spray, being lighted thereby, issues in a powerful vertical column of
flame from the said shield or guard. The duration of the said column of flame can
be regulated at will, by the wind-pressure produced by the bellows, or by means of
the mouth of the operator.
Figure 3 and 4 illustrate a modification wherein provision is made for producing a
horizontal instead of a vertical flame. In this case the positions of the nozzles c¹
and e are reversed, and the shield or guard i is placed in a horizontal position.
1 sometimes provide the lamp d with a separate oil reservoir d placed inside the
main oil reservoir or receptacle A so that the said lamp d can be fed with paraffine
or other volatile oil, whilst the said main reservoir or receptacle A is filled with a
heavy or hydrocarbon oil.
When paraffine or other light or volatile oils are employed in the main reservoir or
receptacle AI dispense with the separate oil reservoir d³ for the lamp d and feed

page_text: the said lamp direct from the said main oil reservoir or receptacle A as hereinbefore
described.
When it is desired to obtain a constant or continuous flame for lighting, or
heating purposes, an air-pump or other suitable means is employed for maintaining a
continuous jet of air from the nozzle c¹.
In some instances instead of the jet of air herein before described I employ a jet
of steam for the same purpose.
1 can moreover if desired provido any convenient means for maintaining a supply
of oil in the reservoir or receptacle herein before described, from a main tank, reservoir
or other convenient source of oil supply.
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
First. A lamp or apparatus for burning hydrocarbon or other oils in the form of
spray, comprising an oil reservoir or receptacle, an air pipe and nozzle, an oil pipe
and nozzle, a shield or guard, and an igniting device drawing its supply of oil from
the said oil-reservoir, substantially as, and for the purpose, set forth.
Second. The combination, with a signalling lamp, of the cowl or hood whereby I
provide for determining the direction from which the signal may be seen, substantially
as, and for the purpose, described.
Third. The improved apparatus consisting of the parts constructed and combined
substantially as described with reference to Figures 1 and 2 or to Figures 3 and 4 of
the accompanying drawing and operating as, and for the purposes, above specified.
Dated this 10th day of December 1888-
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London,
Agents for the Applicant.