Improvements in Spray Lamps.
Year: 1889

page_text: Date of Application, 19th Nov., 1889-Accepted, 21st Dec., 1889
COMPLETE SPECIFICATION.
Improvements in Spray Lamps.
I, ALFRED SHEDLOCK of 196 Temple Court, 5 Beekman Street, New York United
States of America, Engineer do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement :-
The spray lamp forming the subject of this application has both the air and oil
valves at the point where the air and oil issue from the burner, thus insuring a steady
and uniform supply of oil to the flame when in operation and preventing any evapora-
tion and consequent gumming up of the oil when the lamp is out of use; both the air
and oil valves are operated by the same handle, which is so arranged that when it is
turned in one direction it first opens the air valve and then by further turning in the
same direction it opens the oil valve, and by a reversal of this order of its action the
oil valve is first closed and then the air valve this arrangement makes it impossible
to throw out a stream of oil either in the opening or the closing of the valves before
lighting or on extinguishing the lamp. In conjunction with this handle that operates
the valves adjusting devices are provided that can be set to allow of the escape of the
air and oil in any desired relative proportions to produce the character of flame
desired.
:
The relighter is at the upper end of an unbroken tube which extends to the bottom
of the oil tank: this feature of construction is also carried out in the main oil pipe
and is a very important one in lamps devised for the use of liquid hydro-carbons as it
is difficult to make joints and connections through which such liquids will not
penetrate.
In the accompanying drawings to which I will now refer to more fully explain my
improvements:
Fig. 1 is a central sectional elevation of a spray lamp made according to my
invention.
Fig. 2 is an elevation partly in section of the upper part of the lamp taken at right
angles to Fig. 1.
Fig. 3 is a plan view of the burner with the flame guard removed.
Fig. 4 is a transverse section taken on the line x x Fig. 2.
Fig. 5 is an enlarged view of the relighting device and adjacent parts.
The nozzle 7 constitutes the upper end of the oil pipe 8 which extends down without
seam or joint nearly to the bottom of the reservoir a, and the nozzle 6 is secured by
means of a screw thread into the upper end of the stem or body 1 of the burner which
is screwed into the socket 6 fastened to the top of the reservoir a.
The nozzle 7 is fitted into the nozzle 6 to act as a valve to control the air passing to
and through the nozzle 6, and inside the nozzle 7 is fitted an oil controlling valve
attached or forming a part of the rod 14.
In spray lamps as now made having oil and air valves each valve is provided with
an independent operating handle and with the oil under pressure it is imperative that
the air valve be opened first upon lighting a lamp and the oil valve be closed first
upon extinguishing it, and the valves have to be set by trial adjustment each time the
lamp is lighted to produce the flame desired.
Now, one of the leading features of this lamp is the method of actuating both the
air and oil valves by means of one handle, causing the air valve to be opened before
the oil valve when the handle is turned in one direction to start the lamp, and causing
the oil valve to be closed before the air valve when the handle is turned in the reverse
direction to extinguish the flame, and also in causing both the air and the oil valves
to be opened to a definite extent each time the handle is actuated in lighting the
lamp.

page_text: The means here shown by which this new method of operating spray lamps is
carried out consists of the cam 9 rigidly secured to the oil pipe 8 and having two cam
slots c and d, the eccentric pin 10 projecting inwardly from the body 1 and fitting
into the slot c, the pin 12 projecting from the bearing piece 13 on the top of the
pipe 15 and passing through the slot d into the vertical guide groove e formed in the
body 1, the holder 16 secured to the lower end of the pipe 15 and carrying the rod of
the oil valve. 14, the handle 24 provided with the adjustable stop 27 and connected to
the stem 29 which is fitted to rotate in a taper hole in the body 1 and provided at its
lower end with bevel teeth arranged to work into bevel teeth formed on the cam 9, as
shown at Figs. 2 and 4.
The cam 9 is provided with a neck which fits into the lower end of the central
passage of the body 1, and as there is an equal pressure of air above and below this
neck it is only necessary to make an ordinary fit between the neck and body. The
neck inay be provided with packing rings as shown at Figs. 1 and 2.
The pin 10 has a taper shoulder seated into a recessed hole formed through the
body 1 and is held rigidly therein by means of the hollow screw plug 11. The part
of the pin 10 which extends into the slot c of the cam 9 is formed eccentric to the
taper shoulder, as shown at Fig. 2.
The slots c and d are partly straight and partly inclined, the straight part of the one
being opposite to the iuclined part of the other, as clearly shown at, Fig. 1, so that
when the inclined part of the slot c of the cam 9 is being moved over the pin 10 to
open the air valve of the burner the straight part of the slot d travels over the pin 12
without moving the oil valve which is now closed. Now when the straight part of the
slot e moves over the pin 10 the nozzle 7 constituting the air valve is held in open
position allowing the air to issue at a uniform rate through the nozzle 6; and the
pin 12 is moved down by the inclined part of the slot d, thereby opening the oil valve
on the end of the rod 14 in nozzle 7 through the medium of the bearing piece 13,
pipe 15, and valve rod holder 16.
When the cam 9 actuated by the handle 24 has moved the valve on the rod 14
away from its seat in the nozzle 7 sufficiently to allow the right quantity of oil to
issue through said nozzle the stop 27 carried by the handle 24 is set against the
luge on the side of the body and is securely locked in position on the handle by
icans of the screw 28. The quantity of air passing through the nozzle 6 neces-
sary to insure the perfect combustion and spraying of the oil is governed by the
adjustment of the eccentric pin 10, which when set is clamped in position by the.
screw plug 11.
The oil valve rod 14 is screw-threaded at its lower end and passes through a tapped
hole in the holder 16, thus enabling the valve to be closed tightly in the nozzle
when the pin 12 is in the straight part of the slot d of the cam 9. The clamping
screw 17 prevents the rod 14 shifting in the holder 16.
The upper part of the burner comprises the combustion chamber 2 secured to the
top of the body 1 by the outer nozzle 6, the coil of pipe 4 located in the combustion
chamber 2 and having its ends bent so as to extend through openings in the sides
thereof, and the flame guard 3 resting on the top of the combustion chamber and
extending down the interior of coil 4.
Along the side of the body 1 is formed the air passage f into which the air enters
through the inlet cock 23 from any suitable source of compressed air supply. One
end of the coil 4 is connected to the upper end of this air passage and the other end
of the coil is connected to the side branch g which opens into the central passage of
the body 1.
Each of the couplings here used for connecting the two ends of the coil to the body
of the lamp consists simply of a sleeve 5 fitted by a screw thread on the coil, the ends
of which are made conical to correspond to taper recesses formed in the branches f
and g of the body. The outsides of the sleeves 5 are screw threaded in opposite
direction to their internal threads and fit into cerrespondingly tapped holes in the
branches and g of the body 1. To make these joints the sleeves 5, 5 are screwed on
the ends of the coil 4 after it has been placed in the combustion chamber 2, and then

page_text: the sleeves are entered in the tapped holes in the branches and g. As the sleeves
are now screwed into the branches fand g the ends of the coils pass down and extend
beyond the sleeves and are ultimately jammed tightly into the taper recesses. Instead
of making the joints between the coil and the body taper in form they may be
made flat and washers used to insure tightness.
The relighting device comprises the asbestos wick held in the wick tube 20 which
is attachel to the upper end of the pipe 19. This pipe 19 passes down, without seam
or joint, through the air passage f nearly to the botto.n of the oil reservoir a, and is
held at its lower end by a guide hole formed through the oil valve holder 16. It is
advantageous to supply this relighter with a valve to regulate the supply of oil
thereto, and this is done by fitting the pointed plug 21 by a screw thread into the
piece 18 attached to or forming a part of the pipe 19 and providing a seat therefor in
the said piece 18. The wick tube 20 passes through a hole in the bottom of the com-
bustion chamber 2 and the flange i of the body 1; it sets over the upper end of the
piece 18 and by means of an internal slot arranged to embrace a pin projecting from
the valve 21, it, when rotated turns said valve and so regulates the amount of oil
allowed to pass to the wick h. The jam nut 22 on the wick tube 20 by being set
against the flange of the body makes a tight joint between the lower end of the wick
tube and a flange on the piece 18 and a tight joint between said flange and the top
of the air passage f, as clearly shown at Fig. 5.
It is expedient in starting the lamp to first light the relighter, allowing the main
flame to be lighted therefrom when the air and oil are turned on. To provide for
this I make an opening through the side of the combustion chamber in proximity to
the wick, through which opening a light may be readily applied to the wick. This
opening is closed by the cover pivoted to the combustion chamber.
The air supplied to the lamp under pressure acts on the surface of the oil in the
reservoir a through the lower end of the air passage f, thereby forcing the oil up the
pipes 8 and 19, and it passes through the coil 4 into the main passage of the body
from whence it issues through the nozzle 6 thoroughly spraying and intermingling
with the oil which issues from the nozzle 7.
It will be observed that by reason of the oil pipes 8 and 19 being without seam or
joint and the reservoir a being made both air and oil tight the oil cannot possibly
escape from said reservoir except through the upper ends of said pipes 8 and 19,
and there it is immediately consumed; this is an important feature of construction
in lamps of this description, all danger from leaking oil being thereby avoided.
Having now particularly described and ascertained the nature of iny said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
First. In a spray lamp, in combination, an outer air nozzle, an oil nozzle fitted in
the air nozzle as a valve to shut off and regulate the supply of air, a valve located in
the oil nozzle to shut off and regulate the supply of oil, and a handle, connected to the
combined oil nozzle and air valve and the oil valve, constructed to actuate the air
valve and oil valve successively by a single adjustment of such handle.
Second. In a spray lamp, the combination with an outer air nozzle, an inner oil
nozzle arranged to act as a valve to the air nozzle, and a valve located in the oil
nozzle, of a handle and connections between the handle, the oil nozzle and the oil
valve whereby it is caused to first move the oil nozzle away from the air nozzle and
then the oil valve away from the oil nozzle when turned in one direction, and to first
close the oil valve in the oil nozzle and then the oil nozzle in the air nozzle when
turned in the opposite direction.
Third. In a spray lamp, in combination, an oil reservoir having the body of the
lamp attached thereto, an air nozzle secured to the top of the body, a straight oil
pipe passing down through the body into the oil contained in the reservoir, an oil
nozzle on the top of the oil pipe fitted as an air valve in the air nozzle, and a handle
passing through the body and connected to the oil pipe for adjusting it relatively to
the air nozzle.

page_text: Fourth. In a spray lamp, in combination, an oil reservoir having the body of the
lamp attached thereto, an air nozzle secured to the top of the body, a straight oil
pipe passing down the body into the oil contained in the reservoir, an oil nozzle on
the top of the oil pipe fitted as an air valve in the air nozzle, a handle passing
through the body and connected to the oil pipe, a valve in. the oil nozzle carried by
a red extending up the oil pipe, and connection between the lower end of the valve
rod and the han lle.
Fifth. The combination with a spray lamp comprising an oil tank, a body attached
thereto and provided with an outer air nozzle, an inner oil nozzle on the end of a
pipe passing down the body into the oil contained in the oil tank, of a relighter com-
posed of a wick tube containing a wick in close proximity to the air nozzle and a
pipe independent of the oil nozzle supply pipe joined to the wick tube and passing
down into the oil in the oil tank.
Sixth. In a spray lamp in combination, an oil tank, a lamp body attached thereto
having two vertical passages, an air nozzle at the upper end of one of the passages,
an oil nozzle on the end of a pipe passing through this passage into the oil in the
oil tank, an air supply connection joined to the other passage, a heating coil arranged
above the air nozzle and connected at one end to the air supply passage and at its
other end to the passage in communication with the air nozzle, a pipe passing through
the air supply passage into the oil in the oil tank, and a wick tube joined to the
upper end of this pipe.
Seventh. In a spray lamp, the combination with an outer air nozzle, an inner oil
nozzle arranged to act as a valve to the air nozzle, a handle connected to the oil
nozzle, and an adjustable guide pin connected with the oil nozzle by means of which
the retraction of the oil nozzle in the air nozzle is governed.
Eighth. In a spray lamp, the combination with an outer air nozzle, an inner oil
nozzle arranged to act as a valve to the air nozzle, a valve located in the oil nozzle,
a handle connected to the oil nozzle and to the oil valve, and an adjustable stop
for the handle by means of which the retraction of the oil valve in the oil nozzle is
governed.
Ninth. In a spray lamp, the combination with an outer air nozzle, an inner oil
nozzle arranged to act as a valve to the air nozzle, and a valve located in the oil
nozzle, of a handle connected to the oil nozzle and the oil valve, an adjustable guide
pin governing the movement of the oil nozzle and an adjustable stop for governing
the movement of the oil valve.
Tenth. In a spray lamp, in combination, a body having a vertical passage, an air
nozzle at the upper end of the passage, an oil pipe provided with a nozzle located in
the passage, a cam secured to the oil pipe, a pin projecting into the cam from the
body, whereby the vertical movement of the oil pipe is controlled, and a handie
provided with a stem passing through the body and by means of which the cam is
rotated.
Eleventh. In a spray lamp, in combination, the body 1, the air nozzle 6, the oil
pipe 8 provided with the oil nozzle 7, the cam 9 provided with gear teeth, the
eccentric pin 10, engaging with the cam, the handle 24, and the stem 29 provided
with gear teeth meshing into the teeth on the cam.
Twelfth. In a spray lamp, in combination, the body 1, the air nozzle 6, the oil
pipe 8 provided with the oil nozzle 7, the cam 9 provided with gear teeth, the
eccentric pin 10, engaging with the cam, the handle 24, its stein 29 gearing with
the teeth on the cam, the valve rod 14, connections 12, 13, 15, 16, between the
cam and the oil valve rod.
Thirteenth. In a spray lamp, in combination, the body 1, the air nozzle 6, the oil
pipe 8 provided with the oil nozzle 7, the cam 9 provided with gear teeth, the
eccentric pin 10 on the body engaging with the cam, the handle 24, its stem 29
provided with gear teeth meshing with the teeth on the cam, the valve and rod 14,
connections 12, 13, 15, 16, between the valve rod and the cam, and the adjustable
stop 27 on the handle.
Fourteenth. In a spray lamp, in combination, the body 1 provided with the air

page_text: passage, the coil 4, the combustion chamber 2, the branch g, connecting the
passage with the coil 4, and the sleeves 5, 5 provided with right and left handed
screw threads.
Fifteenth. In a relighting device for spray lamps, in combination, the body 1
having a flange i, the wick tube 20, extending through the flange i, the valve 21,
the piece 18 provided with the valve seat, the pipe 19, for supplying oil to the wick,
and the jam nut 22 at the junction of the wick tube with the flange i.
Dated this 19th day of November 1889.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.