Improvements in Spray Lamps.
Year: 1891

page_text: Date of Application, 11th Aug., 1891-Accepted. 10th Oct., 1891
COMPLETE SPECIFICATION.
Improvements in Spray Lamps.
I, ALFRED SHEDLOCK, a Citizen of the United States, of Temple Court,
No. 5 Beckman Street, New York City, in the County and State of New York,
U.S.A., Mechanical 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:-
•
The class of spray lamps to which this invention belongs is that in which oil
under pressure is supplied in a fine jet or spray which is delivered at the burner
with a volume of compressed air which thoroughly breaks up and sprays the oil
and insures perfect combustion. The primary purpose of my invention is to
produce a post-lamp for street or other lighting, though of course the details of
construction and operation may be utilized in various other forms of lamps. The
invention includes, among other things, the use of multiple burners or nozzles
discharging into a single combustion chamber: The employment of a horizontal
open work or net like partition through which the flame from the burner or burners
passes certain improvements in the manner of mounting and connecting the air
and oil pipes and certain improvements in the mechanism for adjusting and
turning on and off the supplies of air and oil: All as hereinafter specified.
In the accompanying drawings which show one embodiment of the invention in a
form which I consider desirable and efficient,
Figure 1 is an elevation with the body or vertical portion broken away :
Figure 2 a vertical section through the same;
Figure 2 a detail view in section :
Figure 3 a plan on the line w, r, of Figure 2, the combustion chamber and cap
of the air supply chamber being removed:
Figure 4 a transverse section on the line, x of Figure 2:
Figure 5 a section on the line y, y, of Figure 2;
Figure 6 a plan about on the line w, e, of Figure 2 but showing a modified
construction:
Figure 7 a vertical section on the line z, of Figure 6:
Figure 8 a view looking into the combustion chamber and showing the netting
therein:
Figure 9 a view illustrating the interior of a building with my improved lamp
suspended from a ceiling or roof beam:
Figure 10 a similar view showing the lamp supported upon a vertical post.
Oil is supplied from any suitable distant source through a pipe 33, that is
provided with an ordinary cock or valve. Air is supplied in like manner through
the pipe 32, also provided with an ordinary cock. Both the oil and air are
supplied under pressure, as is well understood in connection with this class of
lamps, and usually the pressure upon the oil in the reservoir is obtained by the
compressed air which serves to spray the oil at the burner. The air pipe leads to
a casting 12 forming the base of the lamp and bolted to the post or support, is
connected therewith by any ordinary union 18, and opens into an air valve
chamber, within the base, in which a conically pointed valve rod 13 works. This
air chamber is in communication through the seat of the air valve with a
horizontal air-passage 31 leading to the internally screw-threaded socket 12¹ into
which the vertical air pipe 10 screws. The air valve rod 13 is screw-threaded and
works in a tubular threaded extension 14 of the base 12, and is preferably packed
in the following manner: Washers 14, 14 are placed with suitable packing around
the valve stem and between the two washers is a spiral spring 143 that presses
them apart and compresses the two packings continually thus compensating for

page_text: wear of same. The outer packing is held in by a gland or follower over which
there is the usual cap. By adjusting the valve rod 13 by means of its wheel or
handle 16 the supply of air admitted to the pipe 10 and consequently to the
burner, as presently described may be regulated. The oil pipe 9 is arranged
within the air pipe 10 and passes through the bottom of the socket 121 on the
base 12, and screws into one end of a T-coupling 19. Suitable packing 19 is
wrapped around the pipe 10, being interposed between this end of the T-coupling
and the bottom of the socket 121, and a screw-threaded nut or collar 192 working
on the exterior of this end of the T-coupling has the upper part of its interior wall
conical so as to embrace and overlap the packing 191. This nut when screwed
upwardly towards the socket 121 compresses the packing both longitudinally and
diametrically and insures a tight joint at this point. The oil supply pipe 33 is
connected by any ordinary joint 27 with the lateral extension of the T-coupling.
An oil valve rod S working in the interior of the oil pipe 9 passes through the
T-coupling 19, and in the lower end thereof is packed in the same manner as is the
air valve rod, and as already described. The burner head is connected with
the upper end of the air pipe 10 by an ordinary coupling band or collar, and the
upper end of the oil pipe 9 screws into a socket in the under side of the head.
The upper end of the oil valve rod which is screw-threaded works in a
correspondingly threaded socket in the head 1, and is formed with longitudinal
channels 8 which permit the passage of the oil to the valve and burner.
conical valve 7 on the end of the rod is seated in an aperture leading into an oil
pipe or chamber 29 in the head 1, and from this chamber extend passage ways
leading to oil nozzles 6, 6, screwed into sockets in the head, and preferably
inclining towards the axial line of the burner. Air from the air pipe 10 passes by
an aperture 30 through the head 1 to the mixing chamber 5* in which the nozzles 6
are arranged. This chamber is formed by a depression in the upper face of the
head 1 which is covered by a horizontal partition 51 bolted to a horizontal flange
surrounding the edge of the head 1. In the partition 5' are arranged nozzles 5,
each of which is concentric with one of the nozzles 6 and arranged in suitable
proximity thereto. The oil issuing from the nozzle 6 mingles with the volume of
compressed air in the chamber 5" and both are discharged through the nozzles or
burners 5. These nozzles being inclined slightly towards each other the flames
therefrom commingle, the heat of each assisting the other in producing a broad
intense flame.
The
The diaphragm 5' is provided with a vertical annular flange 5*, and a horizontally
projecting upwardly curved annular flange 53. A correspondingly shaped cover 5*
rests upon
the edge of this flange and carries centrally the combustion chamber 4
which is of the ordinary shape. The lower end of the combustion chamber projects
into the vertical flange 5 as shown. The flange 53 is formed with a series of apertures
in connection with which a correspondingly apertured annular sliding plate works,
the plate being moved by a handle 5' to regulate the amount of air admitted. The
air entering through those apertures passes up over the vertical flange 52 then down
and up into the combustion chamber. Air may or may not be thus admitted, as
may be found desirable. In order to improve the quality and efficiency of the
light and to reduce the roaring noise of the flame I place a netting 4' across the
combustion chamber. This netting may be made of wire, or asbestos threads or
other suitable refractory material or may be a perforated plate. The mesh should
be sufficiently large to permit the flame to pass through. I have found that by
means of this device several advantages result: Among others the noise or blowing
of the lamp is decreased and the illuminating power of the flame is increased:
Referring now to the manner of adjusting the air and oil supplies and the method
of turning the air and cil on and off; the oil valve rod 8 and the air valve rod 13
are each provided with a wheel handle 16, 23. The periphery of each wheel is
cut out or formed with a recess curved to correspond with the periphery of the
adjoining wheel. The wheel 16 may be loosened on the air valve rod, set to the
desired point and clamped by the nut 17. In like manner the wheel of the oil

page_text: valve rod may be similarly adjusted by means of the nut 24. The wheel 16 is
provided with a projecting stud 16' and the wheel 23 with a similar stud 23. When
the lamp is not in operation the wheels occupy the position illustrated in Figure 5.
The periphery of the wheel 16 occupies the recess in the wheel 23 and consequently
the oil valve cannot be moved. The wheel 16 may however be moved (in the
direction of the arrow) to open the air valve and this movement may be continued
until the stop 16¹ thereon strikes the stop 23¹ on the wheel 23, when the depressions
in the peripheries of the wheels are opposite each other. The wheel 23 may then
be rotated in the direction of the arrow to open the oil valve and its extent of
motion in this direction may be regulated by a radially projecting stop arm 25
adjustably clamped upon the valve rod as shown. By the adjustment of the stop 25
and the adjustment of the wheels upon the valve rods the amount of air and oil
supplied to the lamp may be regulated. Obviously in starting the lamp the air
valve must first be operated, and it is equally plain that in extinguishing the lamp
the oil valve must first be closed. So far as I am aware I am the first provide
a mechanism in which the air valve handle must be moved to the proper position
before the oil valve handle can be independently moved to turn on the oil, and
vice-versa and this idea may be embodied in other mechanical forms. I do not
therefore limit myself to the particular organization shown.
In Figures 6 and 7 I have shown a slightly modified construction in which six
burners instead of two are shown. The central one throws the flame vertically
while the surrounding burners are inclined toward the centre. The arrangement is
like that already described and no additional description is necessary.
In Figure 9, the lamp herein described is shown suspended in an inclined
position, by the air and oil pipes from a roof beam A. In Figure 10 it is supported
in an inclined position on a vertical pillar or post B.
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. In a spray-lamp, the combination substantially as set forth, of two or more
spray burners or nozzles inclined towards each other, means for supplying oil and
air thereto under pressure, a combustion chamber open at the top into which the
burners or nozzles discharge at the bottom, and constituting a chamber or passage
way through which the mingled oil and air and flame risc, the sprays of the
several nozzles impinging directly against each other and forming a single column
of flame.
2. In a spray-lamp, the combination substantially as set forth, of a series of
spray nozzles or burners one being central and the others arranged around and
inclined toward it, a combustion chamber into which all the nozzles discharge,
open at the top and arranged above the nozzles and constituting a chamber or
passage-way above the nozzles through which the mingled oil and flame rise, the
sprays of the several nozzles impinging directly against each other and forming a
single column of flame.
3. The combination, substantially as set forth, of a narrow combustion chamber
open at the top, through which the flame passes and which prevents the flames
from spreading laterally, a series of oil nozzles 6 through each of which the oil is
forced under pressure, an oil supply pipe communicating with all the oil nozzles, a
valve regulating the supply of oil to the oil-nozzles, a closed chamber 5* into which
the oil-nozzles project, a compressed air supply pipe or passage leading into said
closed chamber, a valve regulating the supply of air through said passage, and the
nozzles 5 arranged above the oil nozzles and leading from the closed air chamber
and through which the mingled oil and air are discharged under pressure into the
combustion chamber.
4. The combination, substantially as set forth, of the burner-head, the oil-nozzles
therein, the partition arranged above the oil-nozzles, the nozzles mounted thereon,
a closed air or mixing chamber below the partition into which the oil-nozzles

page_text: project, a compressed air. supply pipe communicating therewith, an oil pipe for
supplying the oil directly to the oil-nozzles, a valve as 13 regulating the supply
of compressed air to the mixing-chamber, and a valve in the oil supply pipe.
5. In a spray-lamp, the combination substantially as set, forth, of a combustion
chamber, a nozzle through which mingled oil and air are discharged into the
combustion chamber, a netting arranged across the combustion chamber above the
burner in the path of the flame, and an air supply opening into the combustion
chamber below the netting.
6. In a spray-lamp, the combination substantially as set forth, of the nozzle, a
combustion chamber into which the nozzle discharges the mingled oil and air, and
a netting arranged across the combustion chamber and having a mesh sufficiently
large to permit the flame to burn below as well as above the netting, as described.
7. The combination, substantially as set forth, of the burner-head having the oil
passage and seat for the valve-rod and an air passage 30, nozzles 6 connecting with
said oil-passage, the air-pipe 10, to which the end of the burner-head is coupled,
the oil-pipe 8 within the air pipe and secured into a socket in the end of the head,
the oil-valve rod arranged within the oil-pipe and working in a screw-threaded
socket in the burner-head, the partition 5 arranged above the burner-head and the
nozzles therein opposite the oil-nozzles 6.
8. The combination, substantially as set forth, of the burner-head having the
oil-nozzles secured thereto, and provided with the oil-pipe chamber 29, communi-
cating with all the oil nozzles, an oil-pipe communicating with said chamber, a
valve regulating the supply of oil to the chamber 29, a closed air or mixing
chamber 5 above the chamber 29 and into which all the oil nozzles discharge,
discharge nozzles 5 in the top of said chamber above the oil nozzles, a compressed
air supply pipe, a passage in the burner-head connecting the closed chamber 5"
with said air-pipe, and a valve regulating the supply of air to the air pipe.
9. The combination, substantially as set forth, of the internally screw-threaded
socket 12, the air pipe seated therein, the oil-pipe passing through the air-pipe
and through the bottom of said socket, a coupling into which the end of the
oil-pipe screws and a packing interposed between the bottom of the socket and said
coupling.
10. The combination, substantially as set forth, of the socket 12, the oil-pipe
passing through the bottom of the socket, a coupling connected with the end of the
oil-pipe, packing interposed between the end of the coupling and the bottom
of the socket and a nut on the coupling having a conical bore bearing on the
packing.
11. In a spray-lamp, the combination substantially as set forth, with the base 12,
having a socket 12 for the reception of the air-pipe, a passage 31, communicating
with said socket, an air-chamber into which compressed air is admitted and a valve
opening connecting said chamber and the passage 31, of an adjustable valve for
regulating the amount of air passing through the valve-opening from the air
chamber, an air supply pipe leading to the chamber, and a valve in said pipe,
and an oil-pipe passing through the bottom of the socket 12, a coupling into
which the end of the oil-pipe screws, and an oil supply pipe connecting with the
coupling.
12. In a spray-lamp, the combination substantially as set forth, of a burner, air
and oil-pipes communicating therewith, a valve regulating the supply of oil to the
burner, a valve regulating the supply of air, separate valve-rods for operating each
valve, independent valve-rod operating devices for opening and closing the air-
valve, independent valve-rod operating devices for opening and closing the oil-
valve, and locking devices interposed between the two valve rod operating devices,
whereby in starting the lamp the air-valve must first be independently opened before
the oil-valve can be moved, and in shutting off the lamp, the oil-valve must be first
independently closed before the air valve can be closed.
13. In a spray-lamp, the combination substantially as set forth, of independently
operatable air and oil supply valves, separate devices for independently operating

page_text: each valve and locking devices interposed between the valve operating devices ;
whereby, in starting the lamp, the air valve must first be opened before the oil-valve
operating device can be moved, and in shutting off the lamp the oil-valve must be
first operated before the air-valve can be closed.
14. In a spray-lamp, the combination substantially as set forth, of the indepen-
dently operatable air and oil valves and a wheel-handle for operating each valve,
the paths of rotation of which handles intersect each other and the wheels being
formed with recesses, for the purpose specified.
15. In a spray-lamp, the combination, substantially as set forth, of the
independently operatable air and oil supply valves, separate devices for indepen-
dently operating each valve, and devices joining the valve operating devices which
permit of their independent movement, but which in starting a lamp necessitate
the opening of the air valve before the oil valve can be opened, and in shutting off
the lamp the closing of the oil valve before the air valve is closed.
16. In a spray-lamp, the combination substantially as set forth, of the air and
oil-pipes, the air and oil-valves, air and oil-valve rods, recessed wheel handles,
adjustably secured on said rods and stops on the handles.
17. In a spray-lamp, the combination substantially as set forth, of the air and
oil-pipes, the air and oil-valves, the air and oil valve rods, the wheel handles
adjustably secured on said rods, the stops on the wheels, and a stop, as 25, adjustable
around the axis of one of the wheel handles.
18. The combination, substantially as set forth, of the supply-pipes 32 and 33,
the base or casting 12, the concentric air and oil-pipes extending therefrom, the
adjustable air and oil-valves, the burner-head 1, and valves in the air and oil supply
pipes interposed between the source of supply and the regulating valves.
19. The oil spray lamp constructed substantially as herein described and shown
in the drawings.
T 1
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itnesses:
EDWARD C. DAVIDSON.
HARRY STARRETT.
ALFRED SHEDLOCK.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, Agents for the Applicant.