Improvements in and relating to Oil Spray Lamps.
Year: 1890

page_text: Date of Application, 22nd Jan., 1890
Complete Specification Left, 22nd Oct., 1890-Accepted, 22nd Nov., 1890
PROVISIONAL SPECIFICATION.
Improvements in and relating to Oil Spray Lamps.
We, WILLIAM HENRI LUTHER, and EDGAR MANSFIELD BAYLEY, both of the firm
of Frederick Braby, and Company, Manufacturers, of Petersbill Road, Glasgow,
Lanarkshire, do hereby declare the nature of our invention to be as follows:-
This invention has reference to and comprises improvements on the burner,
combustion chamber and other fittings connected with the instantaneous lighting oil
spray and steam lamp for which we have made application for Letters Patent
No. 12998 Sept. 8, 1888 applicable also to the oil and air spray lamps protected
under Patent No. 6619 May 3, 1888, in both of which separate air pressure vessels
are employed for containing the oil and water, or two different kinds of oil, and for
making the latter lamp also an instantaneous lighting lamp.
In the case of the oil spray and steam lamp, the separate oil and water vessels
when placed on the ground would be formed in one with a division between them,
or two vessels connected together with pressure air within them supplied by a
small hand pump, and made portable by being mounted on wheels or otherwise,
and when two oils were used the finer oil would be placed in the smaller chamber,
and made otherwise equivalent to the water in the first arrangement. Or otherwise
these portable vessels might be placed above the lamp to supply the oil and water by
gravitation from a head, without a force pump or compressed air. Pipos would be
led from these separate vessels to the burners, and the water to the combustion
chamber to form steam, or the air to the burners, when that is used in place of steam,
controlled by taps or screw valves, and have the pumps and other ordinary fittings
substantially as described in the specifications of the said Patents.
In reference to the oil and steam spray lamp, in which the water is conveyed to
the annular combustion or flame chamber to form steam, and the steam drawn off
from the upper part of said steam producing chamber, the improvements consist in
conveying this steam down to and through a new form of steam oil and spraying
burner, through a lateral branch in a small central close oil cylindrical vessel, having
the burner formed in its centre of an inverted hollow cone or vena contracta shape,
projecting down to the close end of the lateral steam branch, where a small hole is
bored for the steam spray to blow up into the hollow conoidal burner which would
spread the steam jet, the oil being led up or from the oil vessel to feed the oil into
this cylindrical burner to a level some considerable distance up or near the middle of
the cone where a circle or number of small holes are bored some distance up the
nozzle, so that the spray of steam draws the oil into the burner to be sprayed by its
upward action, any oil not projected through the burner falling back into the cone
to be again sprayed by the jet of steam. The upper part of this burner above the
cone, would have a short flame and air projecting nipple screwed into it, from an
inch to inch and half in diameter, through which air holes would be pierced, so that
as the spray was projected out of this nipple, air would rush in through the lateral
row of holes into the spray, and being lighted above this nipple would flame
within the annular steam combustion chamber and heat it to raise the steam for
supplying this new steam jet, otherwise substantially the same as described in
reference to Figures 1 and 2 of the final Specification of our former application
No. 12998 of 8 Sept. 1888, except that an inner cylindrical or conical chimney

page_text: or funnel is erected some distance over the burner to direct the flame up at its
lower part, and prevent the oil spraying against the inside of the steam vessel before
it was flamed. For instantaneously starting this light a shutting off tap would be
fitted on the steam tube leading from the steam combustion chamber, so that this
may be shut off when a tap was opened on the air tube leading from the pressure air
in the oil vessel to the lateral branch of the steam tube leading to the burner, and so
start the flame and light with an air and oil jet, until the steam was raised in the
combustion chamber, when the taps would be reversed, that is the tap in the air
tube would be shut, and the tap on the steam tube opened, to force the steam to the
central jet, of the inverted cone of the burner as before stated. Or otherwise a two
way cock or valve may be used on this lateral branch, as described in reference to
the Specification of the said former application for instantaneously starting the
light.
This same burner and internal funnel or chimney are also applicable to the lamp
or light burning crude and fine oils from the separate air pressure vessels protected
under Patent No. 6619 of 3 May 1888, in place of the double conoidal burner therein,
shown and described; in this case the crude oil would be forced up into the close
central oil vessel, and the fine oil fed up into the annular combustion chamber and
down into the lateral branch of the central jet of the burner, and the air up into the
air tube and lateral branch, so as to use either the spray jet of the fine oil, up the
central burner to spray the crude oil, and form the flame, in which case the air to
support combustion would enter by the nipple or through holes in the lower part of
the chimney of the combustion chamber. Or for instantaneously starting the light,
the crude oil might be sprayed by the air passing up the air tube, from the pressure
oil vessel, or this might also be used for working the light without the fine oil when
desired or preferred.
In both cases the oil leading to the central close vessel round the new burner to be
sprayed and burned by the steam or vapour projected through the central nozzle,
would be controlled by a small bored tap, which may be of an ordinary construction
except that the small hole through it would be of a conoidal shape, so that any small
object in the oil sticking in it would easily be blown out by the force of the current
and reversing the tap. Or otherwise a small screw valve might be used with a small
spindle for clearing out the hole in the valve seat.
D01
1000
W. R. M. THOMSON & Co.,
A cents
COMPLETE SPECIFICATION.
Improvements in and relating to Oil Spray Lamps.
We, WILLIAM HENRI LUTHER, and EDGAR MANSFIELD BAYLEY, both of the firm of
Frederick Braby and Company, Manufacturers, of Petershill Road, Glasgow, Lanark-
shire, do hereby declare the nature of our invention, and in what manner the same is
to be performed to be particularly described and ascertained in and by the following
statement in writing, reference being had to the accompanying sheet of drawings,
and to the letters and figures marked thereon, that is to say :-
-
Our invention has reference to and comprises improvements on the burner, com-
bustion chamber and other fittings connected with the oil spray and steam lamp for
which we obtained Letters Patent No. 12998 Sept. 8, 1888 applicable, also to the oil
and air spray lamps protected under Patent No. 6619 May 3, 1888, in both of which
separate air pressure vessels are employed for containing the oil and water, or two
different kinds of oil, and applicable also to other forms of oil spray lamps.
And in order that our said invention and the manner of performing or carrying the
same into effect or practice may be properly understood, we have hereunto appended
an explanatory sheet of drawings, in which the same reference letters are used to
indicate corresponding parts in all the figures where shown. Figure 1 is a sectional

page_text: elevation and Figure 2 a plan of an oil spray lamp with its oil and water chambers
and burner and combustion chamber complete, as constructed in accordance with the
improvements of our invention. And Figure 3 is a sectional elevation to an enlarged
scale of the combustion chamber, and our improved construction of burner.
Referring to these drawings:-In the case of the oil spray and steam lamp, the
separate oil and water vessels A, B, when placed on the ground are fitted annularly
within each other, as shown in Figure 1, or they may be formed in one with a
division between them, or two vessels connected together with pressure air within and
communicating with both, supplied by a small ordinary. hand pump Z, and may be
made portable by resting on its lower flanges at z and be carried by spokes passed
through the snugs A" secured on the top of the vessel for the purpose, or be mounted
on wheels or otherwise; and when two oils are used as described in Specification of
Patent No. 6619 May 3, 1888, the finer oil would be placed in the smaller chamber, B
and made otherwise equivalent to the water in the first arrangement. Or otherwise
these portable vessels A, B, might be erected and placed above the lamp to supply the
oil and water by gravitation from a head, without a force pump Z, or compressed air.
Pipes A, B, are led from the lower part of these separate vessels A, B, to the
burner the oil being led through the pipe A¹ and tap A² direct to the burner, and
the water is first led to the lower part of the chamber D surrounding the combustion
chamber D² to form steam, through the pipe B and branch B³, and controlled by the
regulating screw cone spindle valve and chest B2; and the air pump Z and other
ordinary fittings are constructed substantially as described in the Specifications of the
said former Patents.
In reference to the oil and steam spray lamp, in which the water is conveyed
to the annular case D surrounding the combustion or flame chamber D2 to form
steam, and the superheated steam drawn off from the upper part of said steam
producing chamber, the improvements consist in conveying this steam down to and
through a new form of steam oil and spraying burner C, by a pipe D³ through a
lateral branch C² C¹ in a small central close oil cylindrical vessel C³ having the
burner C formed in its centre of an inverted hollow cone or vena contracta shape,
projecting down to the close end of the lateral steam branch C where a small
hole c is bored for the steam spray to blow up into the hollow conoidal burner C
with broad nipple part on top which would spread the steam jet. The oil is led
up from the oil vessel A through the pipe A¹ and tap A2 by the branch A³ to
feed the oil into the lower part 3 of the cylindrical burner (to a level some
considerable distance up or near the middle of the cone where a circle or number
of small holes c¹ are bored some distance up the nozzle, so that the spray of steam
draws the oil through these holes c¹ into the burner C to be sprayed by its upward
action, in the combustion chamber D1, D2, as indicated by the arrows in Figure 3,
any oil not projected through the burner falling back into the cone C to be again
sprayed by the jet of steam. Screw plugs would be fitted at in the steam
orifice C and at c² in the oil chamber C³ of the burner for periodically cleaning
these out; and an overflow tap D would be fitted in the water chamber D.
Above the upper part of this burner C, an inner short flune and air projecting
funnel D', is rivetted or fitted to the lower part of the combustion chamber D²,
and between this and the burner C, on the inside and the annular casing of the
lower part of the water chamber D, on the outside as the spray was projected out
of the funnel D', air would rush in through these spaces D, D, respectively
into the spray, as indicated by the arrows in Figures 1 and 2 and being lighted
in or above this funnel D' would flame within the upper part of the annular
steam combustion chamber D2, and heat it to raise the steam from the water in
the outer annular chamber D, to be led down to the branch (2 of the burner C,
by the pipe D³, as described, and indicated by the arrows in Figures 1, and 3, for
supplying this new steam jet otherwise substantially the same as described in
reference to Figures 1 and 2 of the final Specification of our former Patent
No. 12998 of 8th September 1888, except that the inner cylindrical or conical
chimney or funnel D' is erected some distance over the burner to direct the flame

page_text: up at its lower part, and prevent the oil spraying against the inside of the steam
vessel D before it is flamed.
This same burner and internal funnel or chimney D¹ in the combustion
chamber D are also applicable to the lamp or light burning crude and fine oils
from the separate air pressure vessels A, B, protected under Patent No. 6619
of 3rd May 1888, in place of the double conoidal burners therein, shown and
described; in this case the crude oil would be forced up into the close central oil
vessel 3, and the fine oil fed up into the annular combustion chamber Dand down the
pipe D into the lateral branch C² (of the central jet of the burner C, so as to use
the spray jet of the fine oil up the central burner C, to spray the crude oil, and form
the flame, in which case the air to support combustion would enter by the
spaces DD, as before described.
In both cases the oil leading to the central close vessel (3 round the new burner C
to be sprayed and burned by the steam or vapour projected through the central nozzle
would be controlled by the small bored tap A³, in the pipe A¹ which may be of an
ordinary construction except that the small hole a through it would be of a double
conoidal shape, so that any small object in the oil sticking in it would easily be blown
out by the force of the current and the reversing of the tap. Or otherwise a small
screw valve might be used with a small spindle for clearing out the hole in the valve
seat. When these oil spray lamps are to be used as instantaneous starting lamps, a jet
of compressed air would be taken from the top of the vessels A, or B, which com-
municate by a hole b, by the pipe E controlled by the tap E¹ and led to a lateral
branch at E2 on the inlet orifice C¹ and burner to draw in the oil from the
chamber through the holes c¹ and spray it in the inverted conoidal burner C and
combustion chamber D1, D2, as indicated at E, to E2, and by dotted lines in Figure 1;
the supply of compressed air being turned off by the tap E¹ after steam has been
generated in the chamber D, surrounding the combustion chamber D2, or the light oil
has been vaporized when light and heavy oils are used, as described in the Specification
of Patent No. 6619 May 3, 1888.
As regards the oil and water vessels A and B, we are aware that such vessels have
previously been arranged annularly within each other as shown in Rose's Specifica-
tion No. 1810180 and we do not claim such as part of our Invention..
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 w
claim is
.we
First. The construction, or arrangement and combination of the parts of an oil
spray lamp fitted with inverted hollow conoidal burner with oil orifices actuated by
steam, vapour, or air through a central orifice, and with spray directing central
funnel in combustion chamber, substantially as herein described, in reference to and
shown in the accompanying drawings.
Second. In an oil spray lamp, the construction and use of a burner formed of an
inverted hollow cone or vena contracta shape, with central steam, or vapour inlet
orifice and annular oil chamber and inlet holes so that the spray of steam, or vapour
draws the oil into the burner, substantially as herein described, in reference to and
shown in the accompanying drawings.
Third. In an oil spray lamp, the construction and use of a tap on the oil supply
pipe formed with a bored hole of a double conoidal shape, and so that when the tap is
reversed the force of the air current will blow out any obstruction in the hole, sub-
stantially as herein described in reference to and shown in Figure 3 of the
accompanying drawings.
Dated the 21st October 1890.
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.