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Патент USA US2405234

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Aug- 6, 1946-
Filied Nov.- 27, 1942
2 Sheets-Sheet 1
MIN-on A. Powers
lVoe/ hf \SufferfI'e/d
JMA» ‘yaw
.- 6, 19.46.,-
Filed Nov. 27, 1942 -
2 Sheets-Sheet 2
Mi/fan A. Powers
Noe/ l7’. ‘Sufferf/e/d
Patented Aug. 6, 1946
I Milton A. Powers and Noel H.v Sutter?eld, Dee
troit, Mich., assignors to The TimkenplDetroit
Axle Company, Detroit, Mich., ‘a corporation of
Application. November 27, 1942,--Serial No.- 467,136
15 Claims.
(01'. 158-4)
The present invention relates to liquid fuel
burning apparatus, and is particularly concerned
with oil burners of the wall ?ame type, in which
length, to enable it. to be, exactly ?tted tothe
combustion, chamber, and. in. which the ,joints
combustion is limited to an annular zone located
projectingv head as to precludelprojection ~of .oil
through the jointslduring. burner'operation; to
provide novel grill and segment assemblies which
may be so installed asto provide concentricflame
rim and grill ringspto provide improvedv means
for securing the ?ame rim in placeon the hearth
and which will insure proper spacing thereof
fromv the combustion chamber wall; and to pro
between the segments are so,- related to the oil
adjacent the combustion chamber wall.
rI’his invention is an improvement upon the
Wall ?ame oil burner disclosed in Powers Patent
No. 2,039,607. Burners made in accordance with
the latter patent employv curved and straight seg
ments. In square or rectangular furnaces it was
necessary to'employ, combinations of straight and
curved segments. In circular chambers only
vide other subordinate wall. ?ame-oil burner im
provements. and re?nements.
Further objects will becomeapparent asthe
it is necessary to employ segments havingtwo
di'?erent degrees of curvature, to build upa ?ame 1-5 speci?cation proceeds in. conjunction with the
annexed drawings.
rim that will. follow the contour of the furnace
curved. sections are used.
In some installations.
In the drawings:
wallsuf?ciently closely to givethe desired effi
cient burner operation. This made it necessary
Figure 1 is a fragmental, vertical sectional view
for the dealer to stock a number of each kind
through an oil burner embodying the invention;
of segment, and to also employ skilled workmen 20
Figure 2 is a top plan view of a pair of adjacent
to make burner installations.
It is the major object of this invention topro
vide a wall ?ame oil‘ burner having all of the
advantages of‘ the burner disclosed in the afore
segments of Figure l_, showingv the manner in
which they are telescoped together;
rim made up of a plurality of comparatively short
segments of identical shape and. size, whichare
so designed, andare connected. together in such
manner that they may be assembled to form a
impingement wall;
Figure 3 is a front elevation ofthe segment
assembly of Figure. 2, and illustrates the pair of
mentioned ‘Powers patent, but embodyingya .?ame 25 supports for one of the grills in place on the
continuous ?ame rim, closely following the con
Figure 4 is a fragmental; sectional viewtaken
on the line 4-4 of Figure 3, looking in the direc
tion of the arrows;
Figure 5 is an enlarged, fragmental sectional
tour of thewall of the combustion chamber in
which they are installed‘, irrespective of. whether
the chamber is of square, round, oblong or ob
view of the; upper edge of one of the segments
electrically conductive section located in spark
ing part of the invention;
shown in Figure 1;
Figure 6 is a view similar to Figure 2, but illus
trates a pair of segments of modi?ed form, and
rotund' cross-section, and'yet which is substan
tially oil and air tight, thereby'making it possible 35 also illustrates the parts in the position they
assume adjacent a straight walled portion of the
to stock segments of a‘ single design and size, and
combustion chamber ;.
also facilitating assembly evenby comparatively
Figure 7 is a front elevational view of the seg
unskilled workmen.
ment assembly shown in Figure 6;
A further important object is to provide a
?ame rim i'gniter segment made of plain sheet 4-0 Figure 8 is aright-hand end elevational view
of the structure shownin Figure 7;
steel and having a heat resistant coating for
Figure 9 is a view similar to Figure 8, but illus
protecting its exposed ‘surfaces from the heat of‘
trates a modi?ed. form of igniter assembly form
combustion and also“ embodying a heat resistant‘
ing relationship to‘ an electrode, for effecting , _
efficient ignition when the‘burner ‘is started.
Another object is to provide a ?ame rim seg
ment‘ for a wall ?‘ame burner which is made of
plain sheet metal and has’a' heat‘ resistant coating
for protecting its surfaces against direct exposure
to the combustion gases‘ and is so designed'tliat
it will not undergo harmful distortion, even when
Figure 1.0v is a top plan view of the construction
shown in Figure 9', the hearth material being
removed and the ?ame rim being shown in sec
tion to more clearly illustrate the assembly;
Figure 11 is a side elevational‘ view of a modi-v
?ed form of ?ame rim segment of the invention;
Figure 12 is a front‘elevational view of the
heated to ‘extremely high temperatures.
segment shown in Figure ‘11.
Further objects are. to, provide a segmental
?ame rim assembly which is, adjustable as to‘
which like reference charactershave been em
With continued reference to they drawings, in I‘
ployed to designate similar parts throughout the
tion S, which receives the end of the neighbor
several views thereof, the invention has been il
ing segment, thereby forming an overlapping or
lustrated as installed in a boiler installation'em
telescoping joint. The socket is formed by press
bodying a boiler B having a heated water section
ing out or embossing portions 32, 33 and 34 in
II supported on a base section l2. The boiler Ci the air de?ecting wall 28; the oil impingement
shown is of circular cross-section, but the in
wall 2?; and base portion, 28 of the segment, re
vention "is ‘applicable to i-boilers "of other} shapes,
as will be hereinafter pointed out‘; 'i
Secured to the boiler base section by studs I3
spec‘tivé'ly,j;v As ~seen injFigu're 2,?the socket is
pressedout‘o'f the base portion along a line 35,
which is inclined with respect to the segment
and nuts [4 is a metal hearth plate 15 carrying 10v axis so that the segments may be assembled either
a hearth it of suitable refractory material, which
may be molded into ?nished form‘ and assembled
at the factory with the novel flameirim‘structure
of the present invention, or if desired, assembly
of the ?ame rim and molding’of the hearth may
be carried out on the job. Secured in a central
in the angular relationship illustrated in Figure 2,
'I or in a straight line relationship along the straight
portions of boilers of square or rectanguiar cross
_ section, suihcient play or lost motion being pro
vided in’ the joints to permit free articulation
during assembly, and yet ?tting sufficiently tight
opening H in the hearth is fa’ distributorassem-‘ ' j to iormzsubstantially oil and air tight joints. In
either event a joint is formed which is substan
carrying a fan top I!) provided with a plurality
tially oil and air tight, and the invention accord
of blades 21. Shaft l8 also rotatably supports 20 ingly provides a segmental flame rim having con
a distributor cup ‘(not shown) which centrifugally
tinuity substantially throughout its length, and,
delivers-oil to'a plurality of oil ?inger tubes 22,
because of the nature of the overlapped joint
which rotate with the fan and cup. "
between the segments, and the fact that the seg
I‘ The head-operates in .a well known manner
ments are comparatively short, the segments may
to project astr'e‘ai'nof unatomized oil droplets
be made of identical size and shape and a pin
along. the generaltraiectory indicated by the ar
rality of them installed in any type boiler, irre
rows 22a toward the ?ame rim F,~and also de
spective of whether it is of square, rectangular,
livers a blast of air below the oil'trajectory along
round or elliptical cross-section, and assembled
a separate path designated by the arrows 23, for
on the hearth so as to provide a ?ame rim closely
de?ection by the low-?ame rim wall into inter
iollowlng the contour oi‘ the boiler Wall.
section with the oil atomizing and vaporizing on
Mounted upon each pair of neighboring seg
the impingement wall ‘of the iiiame-rimyin the
ments is a grill G of the character shown in
manner to be hereinafter'pointed out.
Cole Patent No. 2,104,691, granted January 4,
- If desiredlchromef'alloysheet metal may be
1938.‘ Each grill is provided at each end thereof
used to ‘construct ‘the’ ?ame rim and grills, but
with a support 3'! having a pair of notches 38.
we have discovered that it is possible to success
The grills are adapted to be supported upon the
fully utilize thin, low cost, non-heat resistant
?ame rim, with the upper edge of the impinge
steel flame rims-in wall?ame oil burners by pro
ment wall of each segment received in a notch
viding the rim with a protective vitreous coating
of each support, as illustrated in Figure l, and
su?lciently ' thin '- to render the‘ rim assembly 40
if desired the grills may be invertedand sup
thermally conductive to promptly respond to
ported in the other pair of notches when it is
bly D, comprising a motor driven shaft [8 rigidly
combustion conditions adjacent the combustion
zone, and thick "enough to protect the metal
desired to vary the mixing action of the grills,
as disclosedv in the aforementioned Cole patent.
As indicated by the illustration of the grill
' By making a ?ame rim ‘of a plurality of identi 45 supports in Figure 3, the relationship between
cal “comparatively short segments and joining
the grill and segment lengths is such that the
themjtogether in overlapping} relationship, a set
grills are slightly shorter than‘ the combined
or segmentsv may" be assembled in‘ overlapping‘
overlapped length of two segments, with the
relationship on the hearth to form a ‘substantially
result that any, even number of segments may
against oXidization-or carburization.
continuous wall in combustion chambers of round,
be installed in .a boiler and a, complete set of
sciuare, elliptical or oblong shape with, the flame
grills, providing substantially a continuous grill
rim, closely following the contour oi'i‘the- wall,
and'a" thoroughly practical construction provided.
-~Refer1'iiig to Figures 1 to 5, inclusive, the ?ame
ring, 1 installed in place on the flame rim.
,In the embodiment of the invention chosen for
illustration'the ‘segments and segment legs are
rim‘ F‘o'fthis form of the invention is made up 55 preferably made of twenty gauge vitreous en
of a plurality of segments 25' seating directly
ameled’steel; “Armco” iron sheets; or S. A. E.
upon ; the hearth and anchored thereto.’ vEach
1010 or its equivalent plain sheet steel specially
segment is of channel shape having a low, air
pickled for enameling. The segments are each
deflecting, wall it‘ located in the path of'air pro
two inches long plus the overlap. The grills are
jection, a'ihi'gher oil impingement wall ‘27 located
in ‘the pathoi the oil droplets thrown‘by the
distributor head, and a ?at base portion 28,‘which
seats upon‘ the hearth, Preferably welded ‘to
therear face of the oil impingement wall of each
seginent'is‘ asecuring element-29,,provided with
anbpening 3!, and is pointed to‘i‘acilitate push
irig it ‘into the plastic hearth.‘ As seen in Figures
1 and, 3,- eachjm'ember '29_is embedded inthe
hearth while the hearthmaterial isstill plastic.
The ‘hearth material flows into openings 3! and
provides a direct mechanical interlockwith the
hearth when the material has hardened, thereby
?rmly anchoring the segments in place." ’
‘ Referring to Figures 2' and acne end‘ of each
segment is providedlvl'rithfi'an enlarged socket por
preferably made with thellegs located three and
one-half inches apart and made of twenty gauge
material, for additional strength and sti?fness.
Since it is impractical to bend any of the parts
after they have been enameled, the parts are
65 formed into ?nal shape before they are enameled,
as will now be described.
The grills and segments are thoroughly coated
by dipping or spraying with a silica frit or other
suitable heat-resistantv'itreous enamel coating,
denoted in Figure 5 .by the reference character
39, particular attention being paid to coat the
sharp edgesv of all parts, and all“ surfaces sub
jected to high temperatures. The parts are then
subjected to, a high temperature baking process,’
the baking temperature being in excess of 1600
degreesv Fahrenheit, so as to materially exceed
the temperatures to which the parts will be sub‘
jectedduring normal operation, thereby insuring
long life of the enamel coating and thorough
protection of the coated surfaces.
During installation. the hearth is built up of
refractory ceramic ‘material to the required
thickness, and while it isstill plastic the seg
21 and transferring heat‘ by contact, directly‘; to
wall II and to the rear face of
.21., while a
part of the'gases, are driven upwardly throughthe
apertures of grills'G and burn closely adjacent
the upper surfaces of the grills; providing. a ?ame
having a blue base and yellow tips, directed
against. wall i l in efficient heat transferring rela
tionship therewith.
Impingement'wall 21 is accordingly heated to a
lappingrel‘ationship and spaced the proper dis 10 high oil ‘vaporizing temperature by‘the combuse
tion gases eddying behind it, and also by reason
tance-from wall iii, and securing elements 29
of heat radiating directly downwardly from grills
are‘ forced downlinto the. hearth material. In
G,’ The temperature of the segments however. is
conversion installations having'small or poorly
kept below temperatures that ‘would melt the
accessible combustion -chambers,_ the segments
enamel or otherwise. injure the segments, by the
may be supplied assembled. in overlapped rela
rapidre-transfer of excess heat by radiation, part
tionship secured together by a band.‘ of adhesive
or‘ “Scotch” tape along the inside of. wall 21. ‘ of ‘it directly from wall .21 to boiler wall‘! l.
In Figures ‘Brand 7 there is illustrated aimodi
The complete ring is thus'inserte'd into thecham
?ed form of segment 25a ofsubstantially thessame
bet‘, and since the adhesive tape permits articu
as that just described, having a low‘ air‘ de
lation at. each joint, the ?ame rim may be ac 20 shape
?eeting wall 23a. and an impingement wall 21a
curatelyplaced on the hearth to follow the con
J'Oined by abaserportion 23a, but a modi?ed joint
tour-- of'wall . ll, irrespective of Whether it is of
is employed between the segments, and: additional
round, square, oblong or elliptical con?guration.
spacing members are associated with theseg-v
ments are mounted thereon, assembled in over
Thet'ape- may be left in place, as it will burn
awayv upon starting of the burner. Since the
segments are comparatively short it is possible
to employ identical shape and size segments in
all installations to build upa rim having straight
portions or curved portions of comparatively
shortradius-and yet provide a continuous ?ame
rim' structure, relatively free from air and oil
leaks. Also, because of the nature of the over
lapped-joints, it is possible to increase or de
crease,’ by minor amounts, the length of the
?ame rim on the job to exactly adapt it to the
combustion chamber size; The overlapped joints
also permit free expansion and contraction of
the segments in response to heating and cooling.
'_ After the rimhas been installed on the hearth
as just described, the hearth material is prefer
ably permitted-to set, and then a set of grills is
applied to the? ?ame rim. One of the grills is
illustrated in place on the ?ame rim in Figure
1,, with notches 38 seating on the impingement
wall. Notches 38‘ are formed to ?nal shape ‘be
In this form of the invention walls z?‘a‘andl'zlu
at one end of each segment extend beyond base
portion 28a, and are disposed in overlapping ,en-.
gagement with walls 26a and 21a of theadjacent
segments, as shown in Figures 6' and 'l. The. base
“portions of the neighboring- segments meet at. a
butt joint . it»: when they are disposed‘ inq'the:
straight line relationship shown in'solid; lines
When the segments are disposed-in angular rela
tionship, as illustrated in dotted ‘lines in Figure 6,
there is a triangular opening betweenthe ad
jacent base sectionsw28a, but- since the segments.
rest directly upon the hearth, and the-space is.
?lled ‘with plastic hearth materialr a good jointis
nevertheless achieved.
‘I .
In this form of the invention .a modi?edsecurn.
ingland supporting means is also preferably used.v
Securing elements 729a’ are formed in a vmetal
plate or strip 42, secured, as. by welding,.to the
rear face, of each segment. Also bent upwardly
and rearwardly from eachplate 42. is a spacer’-v
l'eg d3 which bears'against wall ll and assures
fore enameling takes place, with suf?cient lost
motion to avoid the necessity of'bending the
proper uniform spacing of each segmentfrom the.
parts during assembly to properly fit the rim.
wall during installation, as well, as» increased
As indicated in Figure 3, each grillhas a length
hearth bearing support“,
slightly less than the combined length of two 50' As- seen in Figures 6 and 7, wallZla extends .
overlapped segments, with the result that when
further beyondlbase portion 28a than wall 26a,
a‘set' of grills is in place on the segments they
so that when the segments are disposed in the
are disposed closely together so as to form a sub
angular relationship illustrated in dotted lines, a.
stantially complete vgrill ring, paralleling or-con
substantially‘oil and air tight seal betweenthe
. centric with the ring of ?ame rim segments;
segments may nevertheless be maintained.
The improved burner of the invention operates
This form of the segment and. its. grills.‘ ‘are
in substantially the same manner and produces
results ‘comparable to those set forth in the afore
enameled. andinstalled on the hearth in the same‘
manner as the one previously described, and is
mentioned Powers and Cole patents.
the preferred .fOrm' because it possesses the ad
Ignition is effected in well known manner, as 60 ditional advantages that spacer-legsllli de?nitely‘.
for instance by vmeans of a pair‘ of electrodes lo
insure proper spacing from the wall, and the'
cated adjacent the front face of impingement
segment moreover is madepf a flat piece. of ma
wall 21, or if desired a single electrode may be
terial, obviating the additional costly embossing
located in spark-forming relationship to the front
or socket-forming operations required by the seg
face of a single chrome alloy steel unenameled
ments of Figures .1 to 5, inclusive, rendering it
segment, the latter functioning as a second elec
much cheaper and simpler to produce; Also,
trode. The unatomized oil droplets projected
these segments lie flat upon the hearth, thus
along the trajectory 22a are both atomized and
more easilyproviding an airtight joint.
vaporized by impact with heated impingement
In both forms of the invention the ?ame rimsv
wall 21, and the air flowing along the trajectory
are assembled in such manner'that the joints 44
253 is de?ected upwardly by wall 26 into intersec
tion with the oil atomizing and vaporizing on wall
Z-Fadj'acent thetop of the ?ame rim. Combustion
takes place above and outwardly of the ?ame rim,
and Ma between impingement walls 21 and ‘21a,
respectively, all face'in the same direction, and
fan‘! 9 is designed to rotate in such direction that *
paftiof’the combustiongases eddying‘ behind wall 75 the ‘oil droplets discharged from tubes -2'2_‘ are"
thrown. in such direction as to avoid driving oil
into the overlapped joints.
Referring to Figures 2 and 6, counterclockwise
head rotation projects the oil droplets substan
tially tangentially with respect to the head pe
riphery along outwardly directed paths, one of
on, to compensate for variations in hearth thick
Clamped in ring 66 is an insulated electrode
assembly 69 having a terminal ‘H at its lower
end and a curved electrode 12 disposed in spark
ing or arc-forming relationship to mass 51. The
which is indicated by the arrow 45 in Figure 2.
igniters may be energized in well known man
As seen by arrow 45, this direction of head rota
ner to ignite the impinging oil upon starting the
tion tends to drive the oil past each joint, thereby
burner, and are preferably connected to a step
avoiding driving oil into the joints. This insures ll up
transformer having a relatively high milli
against leakage of oil behind the rim during ini
amperage output, for producing hot ?aming arcs
tial operation of the burner.
at the impingement wall. Assembly of the parts
From the foregoing detailed disclosure of the
is preferably carried out as follows.‘
, .
invention it is apparent that the invention pro
. After all the parts have been welded to seg
vides a rotary wall ?ame oil burner providing 15 ment
251), including pocket 56, they are all coated
comparatively short segments of identical size
with enamel, except the inside surfaces 14 of the‘
and novel form which may be installed in com
pocket, the inside of ring 6|, (so that it may be
bustion chambers of round, square, oblong or
designed to have a snug ?t with the igniter as
elliptical shape to build up a ?ame rim closely
sembly) and the portion of member 59 below the
following the contour of the boiler wall, and at
level of the ring, and baked to produce va heat
the same time the assembly provides sui?cient
resistant coating. Mass 57 may then be molded
freedom of relative longitudinal movement in the
in place. Plates 63 are then molded in the hearth
joints to allow the length of the flame rim to be
with the igniter assemblies thereon, and nut and
slightly increased or decreased during assembly,
screw assemblies 68 applied. Final adjustment
to exactly ?t it to the size of the combustion
25 of electrode 12 may be carried out after the hearth
chamber in which the ?ame rim is installed.
In Figures 9 and 10 We have shown a modi?ed
form of igniter segment which makes it unneces
sary to employ one or more special chrome alloy
has hardened, by loosening screw 61 and rocking
the assembly about the vertical axis to establish
stantially diametrically spaced around the ?ame
lished through member 59; segment walls 281) and
the proper spark gap.
This assembly accordingly makes it possible to
non-enameled segments to eifect e?icient ignition.
vIn this form of the invention hearth I6 is 30 employ ordinary sheet steel for the flame rim
igniter segments and associated parts, as all the
supported on hearth plate l5 as in Figure 1, and
surfaces exposed to the ?ame are protected by
preferably two special igniter segments 25b, of
a heat-resistant coating, and the insides of
the same general character, and enameled as the
pockets 56 are protected by masses 51, and an
segments 25a previously described, but each eme
efficient electrical path at each igniter is estab
bodying an electrically conductive mass, are sub
27b; the inner surfaces 14 of pocket 56; mass
rim. Welded to the bottom of each igniter seg
51; the spark gap; electrode 12 and terminal ‘H.
ment are a pair of metal strips 5| and 52, whose
In Figures 11 and 12 there is disclosed a modi
outer ends cooperate with the boiler wall to space
the segment the proper distance therefrom, in the 40 ?ed form of-segment 250, of the same general
shape as the one shown in Figures 7 and 8, but
same manner as members 43 of Figures 7 and 8.
embodying sti?‘ening or reinforcing means, which
Strip 5] also has a downturned inner end 291:
prevents the impingement wall from undergo
which is anchored in the hearth.
ing harmful distortion, even when heated to ex
Located in upright wall 21b, in the area of oil
tremely high temperatures, and also makes it
impingement, is an opening 53, and welded to
feasible to employ somewhat lighter gauge ina
the rear face Of the impingement wall, by means
- terial than in the previously described forms of
of ?anges 54 and 55, and aligned with the open
the invention. ,
ing, is a sheet metal cup or pocket-forming mem
The reinforcing means comprises a preferably
ber 56, which, as seen in Figure 9, is open at the
top and is ?lled with a mass of electrically con 50 continuous head or corrugation pressed out of‘
ductive material 51. The latter is preferably
formed by mixing granular carborundum and a
‘binder and water, toform a plastic mass which,
after it has been molded into the pocket, hardens
to a solid mass, presenting a face conforming
substantially to the face of the impingement wall.
If desired, an insulating material may be incor
porated in the binder to increase the resistance
thereof and cause it to heat up when a current
is passed through it. The material is molded into
.the pocket after it hasbeen enameled and baked,
the impingement wall 210, and having vertical
portions 15 and 16 joined by a horizontal portion
17. As seen in Figures 11 and 12, the bead is
pressed outso that it projects on the front face
of the impingement wall and is offset so that it
will not interfere with obtaining an oil-tight
joint when the sections are overlapped, portion
16 being spaced inwardly from the right-hand
edge of the segment (Figure 11) so that the adja
cent segment may lie ?ush against wall 21c, as
indicated in dotted lines, irrespective of whether
the parts are assembled in rectilinear or angular
and after the parts, that will now ‘be described,
have been secured to the assembly.
invention also illustrates an
Strip 52 is provided with a downturned inner
alternate manner of inter?tting the segments.
end 59, which is welded to an electrode position
As seen in Figure 12, the projecting wall portions
ing ring 6| and has a high tension terminal 62
260 and 210 are located at the left-hand rather
at its lower end. ‘Member 59 passes downwardly
than the right-hand side of the segment, as shown
through aligned openings in the hearth and
in Figures 7 and 8, but the parts are overlapped
hearth plate, and supported on a plate 63, seat
., and function in the same way, and are designed
ing on the hearth plate, by meansof welded ears
for the same direction of head rotation in both
64 and 65, is a split clamp ring 66, whose ends
forms of the invention.
are secured together by a, screw 61. The clamp
The invention may be embodied in other spe
ring is secured to memlber'59 by a nut and screw
assembly 68, which is vertically adjustable there 75 ci?c forms without departing from the spirit or
essential characteristics thereof. The present
embodiments-‘are- ‘therefore jto'v be - considered in‘
all respects as illustrative and not restrictiva; the
scope ‘of the invention being 'indicated?by‘the;
'. ‘ "
" '
apparatus’ defined "in claim
appended- ‘claims rather than‘ by’ the ' foregoing, l the 'extende'd'portion of said oil‘ impingement wall‘
description, and-all changes whichcome within‘
the ‘meaning and range of vequivalency-of-the
claims are therefore intended to ‘be embraced
What is claimed andjdesired'to ‘be secured‘ by
United States Letters Patent is:
1. In‘ aliquidfuel burning apparatus, a‘ com
bustion chamber closed ‘at (its bottom by a hearth
and having a wall extending around the periph
ery of the hearth; a ?ame ring structure mounted
on said hearth with all portions thereof substan
tially uniformly spaced from said wall. said
structure being made up of a plurality of struc
is‘longer than the extended portion .of ‘said .dej-_
?ecting wall.
" 8. In a wall ?ame oil burner_'having'.a com-'
bustion chamber closed at its bottom by a hearth
and, a peripheral wall extending around ‘the
hearth,‘a vplurality of relatively short coupled__
individual combustion ring, segments mountedjlin
end-to‘fend ' relationship ‘around 'the “,hearth'fih]
spaced‘ relationship to said wall, 'eac'h'se‘gmen't‘
having a downwardly directed elementsecured to
said hearth and an outwardly directed member
bearing against said wall, to establish and main
tain the proper spacing of said segments from
turally independent, straight segments angularly
said wall.
disposed in overlapping contacting relationship
in all relative positionsof adjacent segments to
provide substantially oil-tight ?exible joints, said
joints affording su?icient relative angular dis
placement of adjacent segments to enable the
a plurality of overlapping segments mounted on
said hearth in spaced relationship to the com
bustion chamber wall and providing an upright
9. In a wall ?ame oil burner having a com
adjustable relative to each other in the plane Y
of the ring and having their neighboring ends 20 bustion chamber closed at its bottom by a hearth,
?ame ring structure to accurately follow the con
tour of the wall of said combustion chamber ir
respective of whether the latter is of curved or
straight contour.
2. In a wall flame oil burner having a combus
tion chamber closed at its bottom by a hearth, a
?ame ring structure made up of a plurality of
oil impingement wall; and a. plurality of grills
having means mounting them on said impinge
ment wall, said segments each being su?‘iciently
short to permit said impingement wall to closely
follow the contour of the combustion chamber
wall, said grills each being of a length slightly
less than the combined overlapped length of two
segments, whereby a set of any even number of
segments will provide for installation of a series
of grills aifording a substantially continuous grill
thin-walled metal structurally independent seg
ring, and said grill mounting means comprising a
ments of channel shape section, each having an
upright oil impingement Wall; an upright air 35 pair of legs on each grill adapted to seat upon
de?ecting wall; and a" base portion seated upon
two adjacent segments.
10. A combustion ring segment comprising a
said hearth, said segments being assembled in
short and longitudinally continuous channel
end-to-end relationship for relative angular ad
shaped thin metal member having one end mate
justment in the plane of the ring and having the
rially enlarged for‘ substantially loose telescopic
neighboring ends of said Walls and base portions
coupling with the smaller end of an adjacent like
disposed in overlapping, substantially oil tight
engagement, and means individual to each seg
ment for directly anchoring the same to said
3. The apparatus de?ned in claim 2, wherein 5
11. In a wall ?ame oil burner having a com
bustion chamber closed at its bottom by a hearth,
a ?ame ring structure made of a plurality of thin
metal segments of channel shape section, each
having an upright oil impingement Wall, an up
right air de?ecting wall and a base portion adapt
scopingly receive the wall and base portions of
ed to seat upon said hearth, said segments being
the neighboring segment end.
4. In a wall ?ame oil burner having a com oil assembled in end-to-end relationship and having
the neighboring ends of the walls and base por
bustion chamber closed at its bottom by a hearth,
tions disposed in overlapping substantially oil
a ?ame ring structure made up of a plurality of
tight engagement, and a downwardly extending
thin segments of channel shape section, each
element on each segment adapted to be anchored
segment having an upright oil impingement wall;
one end of each segment is provided with an en
larged socket formation of su?icient size to tele
an upright air de?ecting wall; and a substan
in said hearth.
impingement and air de?ecting walls are dis
posed substantially ?ush with the hearth.
channel walls.
12. A substantially ?uid-tight wall ?ame ring
tially ?at base portion adapted to seat upon said
fuel oil burners, comprising a plurality of
hearth; said segments being assembled in end
structurally independent linear units of rectan
to-end relationship around the hearth, with the
gular channel form in cross-section arranged in
impingement and air de?ecting wall portions of
order to form a closed ring, with the
each segment extending beyond the base portion (LL) successive
confronting ends of the corresponding channel
at one end of each-segment and overlapping the
walls of adjacent units in substantially Oil Seal
corresponding wall portions of its neighboring
ing contact with each other in the relative an
segment to provide telescoping, substantially oil
gular adjustment of said units in the plane of
and air tight joints between the segments.
the ring from an aligned relation of the chan
5. The apparatus defined in claim 4, wherein
nels, to provide a ?ame ring of a desired gen
the lower edges of the extended portions of said
eral contour having substantially ‘continuous
6. The apparatus de?ned in claim 4, wherein ~
13. The wall ?ame ring as de?ned in claim 12,
wherein the individual ring units are each pro
the extended portions of said oil impingement and
air de?ecting walls are su?iciently long to per
vided with means for anchoring the same to a
mit said segments to be so assembled on said
hearth as to de?ne a curve of relatively short
radius and yet maintain substantially air and "
14. A combustion ring segment comprising a
short thin metal member of substantially rec
tangular channel shape in cross-section having a
combustion chamber hearth.
low front uprightair impingement wall,ra higher
upright rear air impingement wall and ‘a base
tially continuous combustion ring onsaid hearth,
each segment having a low front air impinge
wall, a higher rear oil impingement wall‘
impingement walls, and at least one of said front
and abase wall adapted to be seated on said
and rear walls having an outwardly displaced end
hearth, and said segments each being formed with
portion providing a materially enlarged socket
a materially enlarged socketed end for receiving
for relatively loose reception of ‘the smaller end
in relatively loose overlapped engagement the
of an adjacent like segment.
smaller end of the adjacent segment, said loose
15. In a wall ?ame burner having ‘a combus
engagement permitting arrangement of adjacent
tion chamber provided with ‘a hearth, a plurality 10 segments in required angular disposition to suit
of short longitudinally continuous thin metal in
the contour of said combustion chamber.
dividual combustion ring segments of channel
shape in section arranged to provide a substan
wall extending between the lower endslof said
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