Improvements in Portable Furnaces for Rivet Heating, Smelting, or other Purposes, and in the Apparatus for Heating same by the Combustion of Mineral or other Oils in the Form of Spray or Vapour.
Year: 1888

page_text: Date of Application, 6th. Dec., 1888
Complete Specification Left, 6th Sept., 1889-Accepted 9th Nov., 1889
PROVISIONAL SPECIFICATION.
Improvements in Portable Furnaces for Rivet Heating, Smelting, or
other Purposes, and in the Apparatus for Heating same by the
Combustion of Mineral or other Oils in the Form of Spray or
Vapour.
I, GEORGE ROSE of 3 Avenue Place Springburn, Glasgow, Engineer, do hereby
declare the nature of this invention to be as follows:-
This invention relates to improvements in portable furnaces for rivet heating,
smelting or other purposes and in the apparatus for heating the same by the
combustion of mineral or other oils in the form of spray or vapour, and it has for its
object to improve and simplify the construction or arrangement of parts of such
furnaces and heatngapp aratus.
Portable furnaces as heretofore constructed when heated by the combustion of liquid
fuels have not been made self contained, but require either a connection to a steam
boiler or an air compressor. Under this invention all necessity for connection with an
air compressor or steam boiler can be obviated, although in situations where it may be
found desirable to connect the oil spraying apparatus to a steam boiler this can be done
with advantage.
The portable self contained furnace as constructed under my invention consists of
the usual fire brick lined body or furnace proper, this body I preferably mount upon
two wheels in front and support it by two legs or feet at the rear end I also provide
it with shafts or handles in order that it can be capable of easy removal from place to
place as required. Instead of having only two wheels it may have four wheels as
with the ordinary portable furnaces of this class. To the front, back or other suitable
part of the furnace I under one form of my invention wherein the mineral or other
oil is burned in the form of spray secure a small closed tank or vessel for containing
water. This tank has or may have fitted on or in connection with it a small force pump
for forcing air into the tank, this pump I preferably place on top of the tank although
it may be fitted to work in the inside of the tank or in any other suitable situation.
The tank has also a filling screw for filling in water when desired. The water under
pressure passes from the tank through a pipe connection into a steam generating
chamber or vessel where it is converted into steam. This steam generating vessel is
preferably of annular cylindrical shape and formed of a short inner pipe fixed at its
upper and lower ends into an outer pipe of larger diameter, or instead of being of
cylindrical shape it may be made conical in form. Or the steam generating vessel may
consist of a coil of piping or it may be a single ring or split ring shaped hollow
chamber or a number of hollow rings or split rings joined together by short pipe
connections, such hollow rings being made either in two halves and bolted together or
they may be cast in one piece. Sometimes I may also make the annular form of
steam generating chamber in two halves and bolt these halves together. In connection
with the steam generating chamber a steam superbeating coil or chamber may if desired
be provided for superheating the steam before it passes to the burner to spray the oil.
The burner is so situated as to be just below or at the outer end of the steam generating
chamber aforesaid, the flame issuing from the burner passing right through the centre
of the steam generating chamber and superheating coil or chamber and heating them
in its passage. This burner which is of novel construction consists in principle of a
combination wheel valve and burner. It consists of a hollow chamber into which the
steam or superheated steam is admitted, from the annular or other generating vessel,
hrough a pipe connection, a cock or tap may be secured to the underside of the chamber
for blowing off condensed water which may accumulate therein. The steam from the
chamber escapes through a channel or orifice of conical or other shape and which
constitutes the burner nipple, or instead of making the nipple as part of the chamber,

page_text: the nipple may be separate therefrom and be screwed into position. At that part of
the steam chamber opposite the steam nipple a stuffing box so made as to be capable
of being screwed into and of forming the base or back of the burner is provided.
Working steam tight through the stuffing box is a wheel valve the seat of the valve
being formed by that part of the chamber where the steam outlet orifice or channel is
situated. This valve has formed on the end of its spindle a conical or cylindrical
shaped prolongation which extends right through and is concentric with the steam
outlet channel or nipple. This prolongation can if desired be screwed into the said
steam outlet channel or nipple in which case to allow of the passage of steam a groove
or a number of grooves would be cut longitudinally in the outer surface of the
prolongation so that it would have the appearance of an ordinary screw tap.
The
outer end of the spindle would be provided with the usual wheel or handle and the
valve would be capable of being adjusted so as to regulate the flow or passage of steam
through the steam outlet or channel. The oil to support combustion is led from an
oil tank or reservoir preferably placed on top of the furnace, so as to supply the oil by
gravitation or the oil may be forced to the burner by the action of compressed air a
small force pump being fitted either in or on the oil tank for this purpose, through a
pipe connection which is jointed to the outer end of the spindle of the wheel valve
burner, by a screw coupling or the joint may be formed or be made tight by a stuffing
box, the oil passes down through said spindle and the prolongation thereof, a passage
being bored right through it for this purpose, and issues at its point the oil being there
sprayed by the forcible issue of the steam passing out of the surrounding steam channel
or nipple. Sometimes it would be found advantageous to fit on the end of the steam
outlet orifice or nipple a small adjustable cap which on the hollow spindle valve not
acting through being fractured or from other cause could be so screwed up as to
regulate or shut off the issue of steam from the steam nipple or outlet. With my
improved burner instead of using the hollow chamber as a steam chamber it may be
used for an oil chamber and the steam led through the hollow spindle. Under a
different arrangement of burner the oil from the oil tank or reservoir is led through a
pipe connection screwed to or coupled to a solid piece which solid piece forms the base
of the burner, a hole or passage being bored through the solid piece for the oil to pass
to the burner nipple. The flow of oil is regulated by a wheel valve working in a stuffing
box which box forms part of the burner base. The oil nipple is screwed into the
upper part or inner end of the solid base piece and is in line with the oil channel or
passage formed in it. Screwed on the outside of the base piece and in such a manner
as to surround the oil nipple is a hollow conic shaped cap which constitutes the steam
nipple, the steam being led into the cap through a lateral branch. On top of the steam
cap or nipple I may sometimes screw a hollow cup shaped mixing chamber perforated
on its top side with numerous small holes through which an induced current of air is
drawn by the forcible issue of the combined steam and oil spray jet to support
combustion. This cup mixing chamber may serve to support the annular steam
generating chamber aforesaid." When using this form of burner for supplying steam
through the central nipple instead of oil, the nipple would be made of partly conical
and partly cylindrical shape, the cylindrical part being widened out or expanded so as to
fit into the apex of the surrounding conic shaped cap. Under this arrangement
the oil would be supplied to the said conic cap instead of steam as previously, and a
small hole would be bored in the cylindrical or other part of the steam nipple
through which the oil passes to or near to the point of said nipple and is there sprayed.
Instead of forming the wheel valve and stuffing box as part of the base of the burner,
the valve and stuffing box may be dispensed with and the oil supplied direct to the
oil nipple.
Under a modification instead of spraying the oil by means of steam or superheated
steam as herein before described the oil would be first converted into vapour and then
burned in the furnace. Under this arrangement the oil would be supplied from the
oil tank or reservoir to a vapourizing chamber which might be of ring shape or of
the split ring, box, or rectangular tubular construction described under my prior
application No. 3778 or the vapourizing chamber might be of an annular construction

page_text: similar to that hereinbefore described as used for generating steam under the previous
arrangement, or the vapourizing chamber might be of rectangular shaped rings with
cross or tee pieces at the corners in which removable plugs would be inserted for
cleaning purposes.
The vaporizing chamber would have under any construction
suitable cleaning plugs or doors for cleaning out carbon. From the vaporizing
chamber the vapour generated therein would be led down by a pipe connection to a
a burner of any suitable construction although I prefer to use the same construction of
burner as that shown under my prior application No. 377888. The lower part of the
flame issuing from the burner plays upon the vaporizing chamber and vaporizes the
oil therein.
In some cases a jet of steam may be made to issue along with the vapour for the
purpose of intensifying the heat, or a small oil jet may be used for this purpose.
Under either of the arrangements of steam spray or vapour the burner would be so
arranged that the flame issuing therefrom would pass into and strike against an
obstruction made in or on the furnace hearth for the purpose of splitting up the flame
and so equalizing the heat.
Instead of having separate oil and water tanks as hereinbefore described, a single
tank having a partition in it and dividing it into two compartments one for oil and
one for water may be used or the oil tank may be made with a jacket or pocket on it
to hold the water supply-or vice versu.
The pump hereinbefore described as being used for compressing air into the water
or oil tanks would be preferably the pump for which an application was filed by me
No. 50658. Although a pump might be used which would be capable of pumping
both air and water or air and oil.
I would preferably enclose the steam generating chamber and burner or the
vaporizing chamber and its burner in a thin sheet metal casing to protect the parts
from atmospheric action and to form a receptacle for the naphtha or oil used for the
preliminary heating of the steam or vapour chamber. This casing may or may not
have a hinged or sliding door at top-and it may have also a number of holes for air
supply.
To promote a draught through the furnace a small jet of steam may be arranged
within the funnel or flue tube, and in case of the furnace becoming too highly heated
one or more damper doors or gratings may be made in the furnace, these doors being
capable also of being used to clean out the furnace when required.
In some cases a small boiler may be fitted in the roof of the furnace to supply
steam to spray the oil either without or in conjunction with the annular or other steam
generating chamber.
A small auxiliary burner may be placed on top of the furnace to light up the furnace
and surrounds at night if required.
Instead of using only one burner as described for beating the furnace two or more
may be used.
Dated this 5th day of December 1888.
H. D. FITZPATRICK,
70, Wellington Street, Glasgow, Agent.
+
COMPLETE SPECIFICATION.
Improvements in Portable Furnaces for Rivet Heating, Smelting, or
other Purposes, and in the Apparatus for Heating same by the
Combustion of Mineral or other Oils in the Form of Spray or
Vapour.
I, GEORGE ROSE, formerly of 3 Avenue Place Springburn now of 70 Wellington
Street Glasgow, 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 :-
This invention relates to improvements in portable furnaces for rivet heating,
smelting or other purposes and in the apparatus for heating the same by the

page_text: :
Spray or vapour, and it has for ILS
object to improve and simplify the construction or arrangement of parts of such furnaces
and heating apparatus.
Portable furnaces as generally constructed, when heated by the combustion of liquid
fuels. are not made self contained, but require either a connection to a steam boiler or
an air compressor. Under this invention all necessity for connection with an air
compressor or a steam boiler can be obviated, although in situations where it may be
found desirable to connect the oil spraying apparatus to a steam boiler, this can be
. done with advantage.
י
And in order that my said invention may be properly understood I have hereunto
appended two explanatory sheets of drawings, whereon,
Fig. 1 shows a rivet heating furnace in side elevation, a part being broken away.
Fig. 2 is an end view of the furnace fig. 1.
Fig. 3 is a sectional view of the interior of the furnace fig. 1.
Fig. 4 is a longitudinal section of the burner for use with the furnace.
Figs. 5, 6 and 7 are sectional details.
Fig. 8 shows another form of burner, in section.
Fig. 9 shows in section a different construction of burner fitted to a steam or vapour
generating chamber.
Fig. 10 and 11 represent in section modified constructions of the burner fig. 9.
Fig. 12 represents in vertical section an annular steam or vapour generating
vessel.
Fig. 13 represents in side elevation and fig. 14 inside and end elevation different
arrangements of steam or vapour generating chambers.
.
Fig. 15 shows in vertical section a furnace for heating crucibles.
Fig. 16 is a longitudinal section of a plate heating furnace.
Figs. 17 and 18 show in side elevation different constructions of rivet heating
furnaces from that illustrated at fig. 1.
On the drawings the same reference letters wherever repeated indicate similar or
like parts.
A portable self contained furnace for heating rivets and the like as constructed in
accordance with this invention consists, as shown at figs. 1, 2 & 3 of the usual fire
brick lined body A or furnace proper, this body, A, I preferably, mount upon two
wheels B, B, in front and support it by two legs C, C, or feet at the rear end, I also
provide it with shafts or handles, or a single shaft D to enable it to be easily removed
from place to place as required. Instead of having only two wheels B, B, it may have four
wheels as with the ordinary portable furnaces of this class. To the back, or it may be
the front or other suitable part of the furnace I, under one form of my invention,
wherein the mineral or other oil is burned in the form of spray by the action of a self
generated steam jet, secure a small closed tank or vessel E for containing water. This
tank E, which is supported on a bracket E' fitted at the back of the furnace as shown,
has or may have fitted in or in connection with it, a small force pump F for forcing
air into the tank. This pump is preferably fitted to work in the inside of the tank,"
as shown, or it may be fitted on top of the tank or in any other suitable situation.
The tank has also a filling screw G (fig. 2) for filling in water when desired, and a
gauge G¹. The water by the action of the compressed air forced into the tank through
the pump F is caused to pass through a pipe connection H having a cock H¹ on it,
into a steam generating coil pipe K where it is converted into steam by the heat of
the flame. This steam generating coil pipe K is preferably made in two portions a, b
as shown, the portion a serving as a boiler whilst the portion & serves as a superheater
or steam gas producer. By making the coil in two parts, the part 6, which is always
highly heated, can be renewed when necessary. The part b, as shown, is preferably
made from a pipe of larger diameter than the part a. The superheated steam or gas
is led from the coil b, by the pipe 1, to the back of the burner I, which is so situated as
to be just below or at the outer end of the steam generating coil pipe K aforesaid; the
flame issuing from the burner I passing right through the centre of the steam
generating coil pipe and heating it in its passage.

page_text: The oil to support combustion, by being sprayed from the burner I, is led, through
a pipe connection L fitted with a valve L' or cock for regulating the oil supply to the
burner, from an oil tank or reservoir J which is, by preference, mounted on top of the
furnace as shown in order that the oil can he supplied by gravitation. An air space M
is preferably left at the underside of the tank J to prevent the oil therein becoming
highly heated. The oil tank is provided with a filling plug J and a cleaning plug J.
The products of combustion pass off from the furnace, which may have a sloping
roof as shown at N fig. 3, by the small flue N' to the chimney O.
The openings P at the sides of the furnace are for filling in the rivets to be heated ;
sliding covers P¹, as usual, would be used to cover the holes.
A burner forming in principle a combination wheel valve and burner may be used
with the heating apparatus. One arrangement of this class of burner consists as shown
at figs. 4, 5, 6 and 7 of a hollow chamber Q into which superheated steam or gas
from the self generating coil K is admitted through the pipe connection 6. A
cock Q1, or tap, is screwed into the underside of the chamber for blowing off any
condensed water which may accumulate therein. The steam or gas from the
chamber escapes through a channel Q which may be a simple hole bored in the
nozzle parts of the burner, as shown at figs. 4 and 7 or be tapered or conical as shown
at fig. 6 or it may be of other desired shape. Instead of making the nozzle part or
nipple s as part of the chamber Q as shown at figs. 4 and 7 the nipple may be separate
therefrom and be screwed into position as shown at fig. 6. At that part of the steam
chamber Qopposite the steam outlet nipple S a stuffing box T made to screw into and
form the base or back of the burner is provided, as shown. Working steam tight
through the stuffing box T is a wheel valve U the seat of the valve being formed by
that part of the chamber Q where the steam outlet orifice or channel Q is situated.
This valve may have formed on the end of its spindle U¹ either a conically shaped
prolongation Ŭas shown at fig. 6, or a cylindrical one as shown as figs. 4 and 7. This
prolongation U which extends right through and is concentric with the steam outlet
channel Q may have an annular steam passage all round it as shown at figs. 4, 6 and 7
or it may be screwed into the said steam outlet channel Q2, in which case, to allow of
the free passage of steam, one or more grooves U³ are cut longitudinally in the outer
surface of the prolongation so that it has the appearance of an ordinary screw tap as
shown in section to an enlarged scale at fig. 5. The outer end of the spindle is
provided with the usual wheel V or handle. The valve, U is capable of being adjusted,
by being screwed up tight against its seat or by being slackened, so as to regulate
the flow or passage of steam through the steam outlet or channel Q Oil is supplied
to the burner from the pipe L which is jointed to the outer end of the spindle of the
valve U by a screw coupling, or the joint may be formed or be made tight by a
stuffing box W as shown. The oil passes down through the spindle and the prolonga-
tion thereof, a passage being bored right through, as shown, for this purpose, and issues
at its point, the oil being there sprayed by the forcible issue of the steam passing out
of the surrounding steam channel Q2 or the grooves Us. Sometimes it would be found
advantageous to fit on the end of the steam outlet nipple S a small adjustable cap §¹
(fig. 7) which, on the hollow spindle U, not acting through being fractured or from
other cause could be screwed up so as to regulate or shut off the issue of steam from
the steam nipple or outlet. If desired instead of using the hollow chamber Q as a
steam chamber it may be used for an oil chamber and the steam led through the hollow
spindle.
At fig. 8 a modified construction of burner which is somewhat similar to the form
of burner described in my prior Specification No. 1649783 is shown, in this arrange-
ment the hollow spindle wheel valve is dispensed with. The superheated steam or gas
being led through the opening Y into the hollow chamber Q. The base of the burner
is formed by a screw plug Y'. A draw off cock Q, and a piece of wire gauze or
perforated metal Y2 are preferably fitted in the chamber Q. The steam nipple Y³ may,
as shown, be screwed into the top of the chamber Q. On top of the nipple Y a partly
conic cap Y is screwed. In this burner the oil is supplied to the cap Y* through

page_text: the pipe Y from the gravitation oil tank or other source of supply and drops on to the
point of the steam nipple where it is sprayed.
At fig. 9 another construction of burner is shown, in this arrangement the base
of the burner is formed by a solid piece Z, having a passage Z¹ bored through it for
the oil to pass to the burner nipple Z³. The flow of oil is regulated by a wheel
valve Z3 working in a stuffing box Z which box forms part of the burner base Z. The
oil nipple is screwed into the end of the solid base piece Z and is in line with the
oil channel or passage Z. Screwed on the outside of the base base Z in such a manner
as to surround the oil nipple Z is a hollow conic shaped cap Z which constitutes the
steam or steam gas nipple; the steam or gas being led into the cap through the lateral
branch Z from the source of supply. On top of the steam cap or nipple Z° I may
sometimes screw a hollow cup shaped mixing chamber Z perforated with numerous
small holes Z through which an induced current of air to support combustion is drawn
by the forcible issue of the combined steam and oil spray jet. In this arrangement instead
of generating or superheating steam in a coil, as herein before described the steam is
here shown as being generated in an annular chamber or vessel Z³ which may be
formed of a short inner pipe e fitted at its outer and inner ends into an outer pipe d of
larger diameter, The chamber instead of being of the cylindrical shape shown may
be of conical or other suitable form and if desired it may be made in two halves and
be bolted together. The cup mixing chamber Z7 may, as shown, be screwed into
the end of the annular steam generating vessel Z. The inlet to the chamber is at Z¹º
and the outlet at Zº.
The burner and chamber are preferably, as shown, enclosed within a cylindrical
casing Z¹º
When using this form of burner for supplying steam through the central nipple Z
instead of oil, the nipple would be, preferably, made of partly conical and partly
cylindrical shape as shown in section at fig. 10; the cylindrical part e, being widened
out or expanded so as to fit into the apex of the surrounding conic shaped cap Z³.
With this coustruction the oil is supplied at Ze to the conic cap Z5 instead of steam, as
previously, and a small hole fis bored, preferably, in the cylindrical part e of the steam
nipple through which the oil passes to or near to the point of the nipple and is there
sprayed. The valve and stuffing box may be dispensed with as shown and the steam
supplied direct to the nipple Z2 through the pipe g.
In fig. 11 another form of wheel valve burner is shown. The only essential
difference between it and the burners just described with reference to figs. 9 and 10,
is, that the steam is led into the solid base part, from the under side at Z and that the
nipple is at its point made cylindrical and widened out so as to fit into the cap.
hole f, is bored in the widened part for the oil to pass through to the jet orifice and
be sprayed. The wheel valve may as shown be made so as to be in alignment with the
steam nipple.
A
In fig. 12 a modified construction of annular generating vessel from that described
with reference to fig. 9 is shown. The vessel is in this instance made of an inner
tube having a flange h¹ at its upper part into which is jointed, at its upper end, an
enclosing pipe or casing, l, said casing being screwed at its lower end to the bottom of
the tube h. n is a jamb nut for tighting the joint.
At figs. 13 and 14 are shown two self generating steam arrangements, one of these
arrangements consists as shown at fig. 13 of two or more split or "C" shaped rings j,
connected together by short pipes j₁ and having at the end next the burner a small
coil pipe for the boiling or heating of the water.
k
In the arrangement shown at
fig. 14, two or more tubular squares l, are used instead of the "C" rings. Rings,
made in halves and bolted together, similar in construction to those described under
my prior patent No. 3778 of 1888 may be used instead of the "C" rings or squares
if desired.
.
Under a modification instead of spraying the oil by means of steam or superheated
steam or gas as hereinbefore described the oil may be first converted into vapour in
the generating chamber and then be burned, either separately or in conjunction with
a steam jet, in the furnace. For heating with vapour the arrangement of chamber

page_text: herein before described with reference to figs. 9, 12, 13 and 14 as applicable for
generating steam may be used for generating vapour. When so used the chambers
would be provided with screw plugs l for cleaning out carbon. In the
case of the chamber shown at fig. 12 the casing can be taking off and any carbon
deposited be cleaned out. From the vaporizing chamber the vapour passes by a pipe
connection to a burner of any suitable construction although I prefer to use the burner
shown at fig. 8, or any of those described under my prior Specifications No. 3778 of 85
or 1649789
If desired the vapour flame may be strengthened and intensified by the
addition thereto of an extra supply of oil in this case the burners shown at fig. 10 or 11
may be used, the vapour issuing from the nipple being intensified by the addition of
an extra supply of oil through the hole f. The auxiliary oil jet is sprayed by the
vapour issuing from the nipple.
This
At fig. 15 is shown a furnace for heating crucibles. The self generating steam
burners are placed as shown and the flames issuing from them play upon and
heat the crucible m. The products of combustion pass off by the flue n
furnace may be fixed as shown or it may be mounted on wheels and be portable.
At fig. 16 is illustrated a furnace for heating plates. The roof of the furnace
would be preferably inclined, as shown, so as to throw down the heat on the plate. The
flame from the burner, I or there may be three or more burners, usod, passes into
'the furnace at one end and the products of combustion escape through the flue n' made
in the floor and so pass to the chimney. The furnace may be mounted on wheels n'
and be fitted to run on trams to any desired part of the yard or workshop as
required.
In fig. 17 a different form of portable rivet heating furnace from that shown
at fig. 1 is illustrated. In this case the oil tank J, is simply placed on top, as usual,
F
while the water tank E, may be fitted to lie on its side and have a pump
working in it at one end. The annular form of generating chamber Z' is shown
as used with this furnace. When this furnace is heated by a vapor jet, the
tank E, may be used for the oil to supply the vapor chamber whilst the tank J,
may be used to supply a further quantity of oil to the burner for being admixed
with and thus enriching the vapour.
In fig. 18, a furnace is shown having a small boiler p fitted on its roof to
supply steam to spray the oil which is forced from the tank E, to the burner by
means of the pump F. The boiler p may be used either by itself, as shown, or in
conjunction with the generating coil or annular chamber.
To promote a draught in the furnace a small steam jet arrangement may be
fitted in the funnel. This arrangement consists of a coil g to which steam may
he supplied from the boiler p, or water may be supplied direct to the coil and
Tho
steam raised therein by the heated waste gases passing off from the furnace.
furnace may he mounted on legs or supports as shown.
The steam jet arrange-
ment may be fitted on any of the furnaces hereinbefore described.
If desired one or more damper doors or gratings may be fitted on the furnace, these
doors being capable also of being used to clean out the furnace.
The steam or vapor generating chamber is preferably enclosed in a thin sheet
metal casing as shown at figs. 1 and 9 to protect it from the chilling effect of the
atmosphere and to, at the same time, form a receptacle for the naphtha or other
oil saturated waste used for the preliminary heating when it is done in the ordinary
manner. I prefer, however, to heat the chamber, at starting, by spraying the oil
by means of an air jet led from the water or oil tank throngh the pipes r, H, in the same
manner as described in my prior Specification No. 11517 of 88. The casing may or
may not, as desired, have a hinged or sliding door at top to inspect the chamber or
to insert naphtha waste. It may have one or a number of holes for admitting an air
supply to the flame.
Under either of the arrangements of steam or vapour spray, the burner may be so
arranged that the flame issuing therefrom will pass into and strike against an
obstruction, made in or on the furnace hearth, for the purpose of splitting up the flame
and so aid in equilizing the heat.

page_text: Instead of having separate oil and water tanks as hereinbefore described, a single
tank having a partition dividing it into two compartments, one for oil and one for
water may be used ;. as indicated in dotted lines at t fig. 3. or the oil tank.may be
made with a jacket or pocket on it to hold the water supply or vice versa.
The pump herein before described as being used for compressing air into the water
or oil tank may be the pump patented by me on the 5th day of April 1888 No. 5065,
or a pump capable of pumping both air and water or air and oil may be used.
An auxiliary lamp or burner X figs. 1 and 2 is preferably fitted on top or to the
side of the furnace for lighting up the furnace and surroundings at night. This
auxiliary burner or lamp is preferably made in accordance with my prior patent
No. 11517 of 1888, and is supplied with oil by the pipe u from the tank J, and water
by the pipe o from the tank E, or it may be a vapour lamp similar in construction to
the lamp patented by me on the 12th day of March 1888, No. 3778. The lamp would
in this case be supplied with oil alone from the tank J. Any other class of lamps may,
however, be used.
Instead of using only one burner as described for heating the furnace two or more
may be used.
A furnace may be constructed on the same lines for smelting metals and be heated
by the heating apparatus hereinbeforo described.
In situations where found desirable the steam may be supplied from a steam
boiler to the burner or to the steam chamber, for spraying the oil.
If desired the water may be supplied from a gravitation tank fitted on or in
connection with the furnace.
The annular constructions of generating chamber shown at figs. 9 and 12 may if
desired be used with the auxiliary lamp.
The construction of furnace and burners may be slightly modified without departing
from my invention.
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
-
(1.) A portable furnace, wherein is combined a bricklined body, an oil tank fitted
on top of said body, a water tank fitted at the back thereof, an oil spray burner
and a coil pipe or annular chamber wherein wator from the water tank is converted
into steam by the heat of the flame issuing from said burner, substantially as herein-
before described with reference to figs. 1, 2, 3 and 17 of the drawings annexed.
(2.) A furnace for rivet heating, sinelting or other purposes wherein as combined a
brick lined body mounted portably on wheels having a single oil tank or two oil tanks
fitted thereto and an oil burner (such as shown at figs. 9, 10 or 11), worked with vapour
generated in an annular chamber heated by the flame issuing from said burner,
substantially as hereinbefore described.
(3.) The improved construction of oil spray heating apparatus comprising an oil
tank and a water tank, or a singlo tank divided by a partition into compartments
for oil and water, an oil spray burner, and a coil pipe wherein water from the water
tank is converted into steam by the heat of the flame issuing from said burner, all
substantially as herein before described.
(4.) The improved construction of oil spray heating apparatus comprising an oil
tank and a water tank, or a single tank divided by a partition into compartments for
oil and water, an oil spray burner, and an annular chamber wheroin water from the
water tank is converted into stean by the heat of the flame issuing from said burner,
all substantially as hereinbefore described.
(5.) The improved burner consisting of a hollow chamber having a nozzle at one
end and fitted with a stuffing box at the other end through which works a valve having
its spindle hollow and formed with a prolongation which works freely in said burner
nozzle, substantially as hereinbefore described with reference to figs. 4, 5, 6 and 7 of
the drawings annexed.
(6.) The modified construction of burner wherein is combined a base piece having

page_text: a wheel valve working therein, a conic nipple fitted in said base piece, and a cap
screwed over said nipple, substantially as herein before described and shown at figs. 9
and 11 or the drawings annexed.
(7.) The modified construction of burner wherein the wheel valve is dispensed with
and the nipple (Z) which is screwed into the base (Z), has a cylindrical part (e) fitted
thereon said part having a hole (f) to allow oil from the surrounding cap to pass into
the orifice of the nipple to be sprayed, substantially as hereinbefore described with
reference to fig. 10, of the drawings annexed.
(8.) The heating apparatus for furnaces, wherein is combined a coil pipe (k), split
ring steam or vapour generating chamber (j) and burner (I), substantially as
hereinbefore described with reference to fig. 13 of the drawings annexed.
(9.) The heating apparatus for furnaces wherein is combined a coil pipe (k);
rectangular shaped tubular construction of steam or vapour chamber (1) and burner (I)
substantially as hereinbefore described with reference to fig. 14 of the drawings
annexed.
(10.) The combination with a portable furnace, of a self generating steam lamp (✗)
supplied with oil from the tank (J) and water from the tank (E), for lighting up the
furnace and surroundings at night, substantially as hereinbefore described with
reference to fig. 1 and 2 of the drawings annexed.
Dated this Fifth day of September 1889.
H. D. FITZPATRICK,
70, Wellington Street, Glasgow, Applicant's Agent.