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Патент USA US2114319

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Apriì I9, 1938.
W. l. SALLEE
l 2,114,319
FUEL GUN AND AERATOR
Filed July 20, 1954
5 Sheets-Sheet l
vl.if
April 19, 1938.
w51. SALLEE
2,114,319 I
FUEL GUN AND AERATOR
Filed July 20, 1934
3 Sheets-Sheet 2
55
April 19, 1938.
w_- |_ SALLEE
2,114,319
FUEL GUN AND AERATOR
z
_ Filed July 20, 1954
5 sheets-shge'ç’ s
- INVENTOR `.
WEBSTER Í. .SAL/.5E
BY
¿?
l
ATTORNEYS
Patented Apr. 19, 1938
2,114,319
UNITED STATES PATENT OFFICE
2,114,319
FUEL GUN AND AERATOR
Webster I. Sallee, Cleveland, Ohio
Application July 20, 1934, Serial No. 736,214
11 Claims. (Cl. 110-104)
This invention relates to a fuel gun for burn
ing Various types of fuel selectively or in different
combinations, the principal object being to pro
vide a gun which is simple in construction and
economical to manufacture and which operates
at high efliciency with pulverized fuels, liquid
fuels, and gaseous or other carbonaceous fuels
individually or in various combinations with
each other.
Another object is to provide a gun which may
readily be mounted for operation with and dis
mounted from a combustion chamber with which
used and in which the various operating ele
ments may be easily and quickly assembled and
disassembled for servicing and repair.
A correlative object is to provide a fuel gun
having an effective safety contro-1 by which the
discharge of fuel is prevented while the gun is
removed from operating position.
Advantages of the present apparatus reside
' in the efficient manner in which the fuels uti
lized are introduced into the >gun and discharged
therefrom as a combustible mixture to points
of application and also in the manner in which
the secondary air and fuel are well mixed and
discharge end of the body portion I, a coaxial
tubular extension 3 connected to the neck, and
an inlet conduit 45, later to be described, con
nected to the opposite end of the body portion I,
preferably by bolts as illustrated in Figs. 1 and
2, these parts forming a rigid unitary structure.
Mounted within and forming part of the gun
and coaxial therewith is a stationary pintle 4 10
which extends forwardly from its means of sup
port through a neck portion 2 and protrudes
part way into the extension 3. Rotatably mount
ed on the pintle 4 is a spinner cup 5, the cup 5
being flared radially outwardly both interiorly 15
and exteriorly toward the discharge end of Athe '
extension 3 and being open toward the said dis
charge end. Carried on the cup 5 and substan
tially in the plane of the discharge opening of
the extension 3 is a plurality of radially ex
tending spinner blades 6 which, upon blowing air 20
through the gun casing, toward the discharge
end, cause the cup to rotate at high velocity.
The pintle 4 is carried on suitable radial spider
arms 8 and 9 secured to an annular collar I0 and
turbulence of the resultant mixture is effected.
Other objects and advantages will become ap
parent from the following specification wherein:
preferably integral therewith. For ease in
mounting and dismounting the pintle, the rear
Fig. l is a side elevation of a fuel gun and
the forward edge of the tubular body portion I.
The collar I0 is secured in operating position by
engagement of an external annular forwardly
facing shoulder thereon with a complementary
internal annular shoulder II in the neck portion
mounting embodying the principles of the pres
ent invention, parts thereof being shown in sec
tion for clearness in illustration;
Fig. 2 is a rear end elevation of the apparatus
illustrated in Fig. 1 showing the gun in operat
ing position;
40
the gun comprises a tubular body portion I, a
coaxial tubular neck portion 2 connected to the
edge of the collar I 0 and arms 8 and 9 abut
2 of the gun casing.
The neck portion 2 ex
tends rearwardly beyond the shoulder ll and is
internally threaded to engage complementary
Fig. 3 is a fragmentary end elevation similar
to Fig. 2 showing the gun and relative position
of safety control elements thereof preparatory
to removal of the gun from its support;
threads on the forward end of the body portion
Figs. 4 and 5 are cross sectional views of the
apparatus illustrated in Fig. l and are taken on
planes indicated by the lines 4--4, 5-5 of Fig. ' 1
removed from the gun as a‘unitary structure.
respectively;
Fig. 6 is a fragmentary cross sectional view
taken on a plane indicated by the line 6-6 of
Fig. 2;
Fig. 7 is a fragmentary view taken on a plane
indicated by the line 'I-‘I of Fig. 6;
Figs. 8 and 9 are enlarged cross sectional views
taken on planes indicated on lines 8_8, 9-9
respectively of Fig. 1; and
Fig. 10 is an enlarged longitudinal sectional
view of the spinner cup of the gun.
Referring first to Figs. 1 and 2 in which a pre
ferred embodiment of the invention is illustrated,
I. Thus by unscrewing the neck portion 2 of
the casing from the body portion I, the collar
I Il and pintle and spinner assemblage may be
The wall of the body portion I is comparatively
thick radially and is provided with longitudi
nally extending ducts I5 and I6 which terminate
in the forward edges of the body member I for
supplying lubricating oil and fuel oil respec
tively to the gun. In the form illustrated, the
duct I5 i-s for the lubricating oil supply and the
duct I6 for the fuel oil supply. The discharge
ends of these ducts are so arranged relative to 5,0
the spider arms 8 and 9 and the annular collar
I0 that when the collar I0 is installed as above
described, they will communicate respectively
with complementary longitudinal extension ducts
I8 and I9 provided in the spider arms 8 and 9
2
2,114,319 '
respectively.
Radially extending ducts 20 and
2l communicating with the ducts i8 and I9 re
spectively are provided in the spider arms 8 and
9 and, in turn, connect these ducts respectively
with longitudinally extending ducts 22 and 23
in the pintle, the duct 22 being positioned to dis
charge lubricant into the bearings of the pintle,
later to be described, and the duct 23 discharg
ing axially of the pintle out of the forward end
10 thereof. A suitable cap 2li is carried on the pin
tle and positioned over the end of the duct 23,
for retaining the spinner on the pintle, the cap
24 having a plurality of radially extending ducts
25 for discharging the fuel oil entering the cap
15 radially into the interior of the spinner 5 so
that it may be discharged thereby with a swirl
ing motion.
In order to admit gas to the gun, the body
portion i is provided with a radially extending
duct which discharges directly into the interior
of the body portion l, as will later be described.
Referring next to the mounting of the spin
ner 5, the pintle d is provided with external bear
ing races spaced apart longitudinally of the pin
which forms the rear wall of the housing 30 and
which snugly receives an enlarged diameter por
tion 36a on the body portion I of the gun for
supporting the gun casing. IThe annular flange
36 is provided with longitudinal ducts 31, 38, and
39 respectively which at their discharge ends
open through the rearward face of the annular
ñange 36, the open end of each being provided
with a suitable compressible sealing washer such
as indicated at 40. The body portion I of the 10
gun is provided with an external annular flange
4I having a forwardly exposed face complemen
tary to a portion of the rear face of the iiange
36. The annular flange 4I is provided with a
plurality of radial ducts 42, ¿i3 and 44 having 15
25 tle, each of which races carries a set of ball bear
ings 25, which engage internally and rotatably
support a suitable sleeve extension 2l, coaxial
with and connected to the spinner cup 5. At the
relatively remote ends of the sets of bearings 23
30 .are suitable packing glands for preventing the
entrance of foreign matter into the bearings.
The duct 22 discharges lubricant between the sets
of bearings. To assist in preventing entrance of
foreign matter and also to distribute the oil
35 _ along the portions of the pintle outwardly from
the bearing sets, a plurality of spiral ribs 23 are
provided. The ribs 2B, one set of which is bet
ter illustrated in Fig. l0, are spiraled in such
direction that upon rotation of the cup by the
40 blades 6, they effect a brushing and conveying
action outwardly from the bearing sets and thus
will continuously move any foreign matter away
from the bearings.
In order to support the gun in operating posi
4:5 tion relative to a combustion chamber with which
it is to be used and to supply secondary air in
an efficient manner, a secondary air housing 30
is provided and is connected to a suitable blower,
not shown, through a conduit, indicated dia
50 grammatically at 30a in Fig. l. The housing has
a forwardly extending sleeve 3l communicating
interiorly therewith, the forward end of the sleeve
3l being secured to the open inlet end of a re
fractory lined combustion chamber, indicated
55 diagrammatically at 32. Within the sleeve of
the secondary air housing is a plurality of di
rectional vanes 33 carried on radially extending
rock shafts 33a extending outside of the sleeve
3l. The outer ends of the shafts 33a are bent
over
and received in notches in a rotatable plate
60
34 which is rotated ‘through the medium of a
screw controlled lever 34a, see Fig. 8, for set
ting the vanes at predetermined angles so as to
impart the desired swirling motion to the air
65 passing from the housing 3U into the sleeve 3l and
combustion chamber. The directional vane as
semblage is preferably the same in form and
function as that more fully described in Letters
Patent No. 1,923,330, issued to me on August 22,
70 1933. From front to rear, entirely across the
interior of the secondary air housing 3G, is a
75
sleeve 35 of sufficient diameter to accommodate
the fuel gun casing, the sleeve 35 being sealed
from communication with the interior of the hous
ing. On the sleeve is a thick annular flange 36
short longitudinal extensions which open through
the forward face of the annular flange lIl in
position to communicate with the ducts 31, 38,
and 39 respectively when the gun is slid into
operating position in the housing Sil. The wash 20
ers ¿lil are so arranged that when the gun is moved
into operating position and the complementary
ducts in the ñanges 3E and ¿Il communicate with
each other, the junctures of the ducts are sealed
thereby. It should be noted that the ducts 42 25
and 133 which supply lubricating oil and fuel oil
respectively form ccntinuations of the ducts I5
and IS respectively. The duct (Iâ, however, for
supplying gaseous fuel from the duct 39 dis
charges directly into the casing of the gun as 30
illustrated in Fig. 4.
Mounted on the rear wall of the body portion
I of the gun `is a tubular inlet conduit «l5 hav
ing its discharge opening lying in an upright
plane and coaxial and communicating with the 35
interior of the body portion I at the inlet end of
the body portion. The conduit d5 is curved so
that the opposite or inlet opening thereof lies
substantially in a horizontal plane. At its in
let end, the conduit 45 is provided with a hori 40
zontal external flange 46, the lower face of which
is snugly received on and slidable along the upper
face ¿51a of a support 41, which extends rear
wardly from the secondary air housing and pref
erably is rigidly carried thereon.
45
In order to provide a slide-way for the fiange
i6 so as to slidably fasten the gun onto the sup
port ¿l1 through the medium of the flange 13.3,
guides 48 are provided, the guides extending lon
gitudinally of the support II'I along the sides there 50
of in overhanging relation to the upper side mar
gins of the flange 45. The support IVI and guidesare operable to receive the flange ¿i6 and main
tain the gun coaxial with the flange 3G when slid
rearwardly out of operating position.A
55
As explained in the objects above set forth,
there would be extreme danger of explosion were
the gun withdrawn from operating position while
any of the supply ducts were open and discharg
ing. In order to prevent the discharge of fuel 60
or lubricating oil through the ducts 3i, 38, and
39, these ducts are provided with radial exten
sions 31a, 38a, and39ct, respectively, each of
which extensions is provided with a stop cock
¿I9 operable when closed to block the duct with 65
which associated. Rotatably mounted on the
housing 30 is an annular control ring 50 having
a plurality of radially extending arms 5I. The
outer end of each of the arms 5I has a lug which
is received between a pair of yoke arms Sla on 70
the handle of the stop cock with which it is asso
ciated. The stop cocks 49 are arranged to open
and close when their respective handles are ro
tated by the arms 5I, consequent upon rotation
of the control ring 50 to different positions. The 75
2,114,319
relation between the yoke arms 5|a vand the arms
5| are such that the stop cocks are operated to
open and close concurrently with respect to each
other when the ring 50 is rotated.
The control ring 50 is provided with an operat
ing handle 50a by which it may be rotated to and
fro selectively.
In Fig. 2, the ring is rotated so that all of the
stop cocks 49 are in the open position, and in Fig.
10 3 the plate has been rotated so that all of the stop
cocks are in closed position.
In order to latch the gun in operating position
a swinging latch 52 is mounted on the support 41
and arranged to be moved into and out from
latching engagement with a complementary
latching element 53 on the conduit 45.
As better illustrated in Figs. 1, 6, and 7, the
latch 52 is mounted on a rock shaft 54, the rock
shaft 54, in turn, being provided with parallel
supporting stud rock shafts 55 eccentric there
to and rigid therewith for a purpose later to be
described. The latch is rockable on and relative
to the shaft 54. A spring 56 is connected at one
end to the shaft 54 and at the other end to a
pin 5'! rigid with the latch 52 for swinging the
latch consequent upon rocking the shaft 54. In
order that the ducts of the flange 4| and the cor
responding ducts of the flange 36 may be sealed
at their junctures, it is necessary that the com
30 plementary face of the flange 4| be drawn into
stressed engagement with the washers 4D. The
latch 52 is arranged to accomplish this result.
In Figs. 6 and '7, the latch is shown in latch
ing position, in which position the eccentricity of
35 the shaft 54 is to the left and the latch 52 is
drawn against the latch element 53. Carried on
and rigid with the stud shaft 55 is an operating
handle 58 which is disposed in upright position
when the latch 52 is in latching position. In or
40 der to release the latch 52, the handle 58 is swung
downwardly toward the latch. This action dis
poses the eccentricity of the shaft 54 upwardly,
ñrst reducing the stress on the latch 52 resulting
therefrom and then moving the latch slightly to
45 the right, at the same time, through the medium
of the spring 56, rocking the latch 52 downwardly
3
latch 52 into alignment with the latching element
53, the eccentricity of the shaft 54 being so posi
tioned that the latch 52 can pass upwardly be
hind the` element 53. Continued upward move
ment of the handle disposes the greatest eccen
tricity of the shaft 54 away from the latch ele
ment 53 thus engaging the latch with the ele
ment 53 and stressing the two into engagement.
The eccentricity of the shaft 54 and the shaft 55
is so disposed that when the handle 58 has been 10
moved to upright position, the axis of the shaft
54 is slightly below the horizontal plane through
the axis of the shafts 55, or slightly below the di
rection of the resultant stressing force through
the latch 52. The effect of the resultant force 15
therefore, is such that it tends to rotate the shaft
55, due to the eccentricity, further in a direction
to dispose the handle upwardly. Thus an action
is effected which utilizes the actual stress of the
latch 52 for maintaining the latch and element 20
53 in latching condition. Due to the under-cut
ting 59 of the complementary latch elements, it
is, of course, necessary that the latch 52 be moved
slightly to the right before it can be swung down
wardly. This result is also effected by the eccen
tricity of the shaft 54, which upon downward
movement of the handle 58, moves the latch 52
to the right, as explained. When the latch 52 is
fully engaged, the ring 58 is released by the lug
gg so that it may be rotated to open the stop cocks
30
In order to prevent an unskilled operator from
moving the handle 58 downwardly and releasing
the latch while the ring 50 is rotated to position
to open the cocks 49, a guard 62 is provided on 35
the ring, the guard 62 being positioned to over
hang the handle 58 when the cocks are open, as
illustrated in Fig. 2, so that it is impossible to
swing the handle downwardly while they are in
open condition. On the other hand, when the
ring 50 is rotated to close the stop cocks, as illus 40
trated in Fig. 3, the guard 62 is moved out of
over-hanging relationship to the handle 53 and
the handle can be grasped by the operator and
moved to release the latch 52. The guard 62 may,
if desired, be provided with a cam surface 53 for
insuring movement of the handle 58 to fully up
clear of the latch element 53.
It should be noted that the latch element 53 right position.
and latch 52 are slightly under-cut, as indicated
As explained above, primary air is supplied in
50 at 59, so that a longitudinal pull or stress on the
to the interior of the gun through the tubular
latch 52 more firmly interlocks the two and pre _ conduit 45. The gun, however, is generally used 50
vents the latch 52 from dropping or camming for pulverized fuel, which, along with the primary
downwardly off the element 53.
air, may be blown into the gun through the con
When the latch 52 is swung downwardly so
duit 45 from a suitable air swept attrition mill
55 that the gun is released, the danger that the
which is not shown herein but fully described in
handle 56a.v will be operated subsequently to open my co-pending application Serial No. 732,125,
the stop cocks 49 remains. In order to prevent filed June 23, 1934. On the support 4l is a feed
such operation while the gun is unlatched or conduit 66 which leads to the discharge duct of
withdrawn, a lug 60 is provided on the latch 52 the air swept attrition mill so that air laden with
60 which, in the form illustrated, is disposed on the
pulverized fuel may be discharged therethrough
opposite side of the rocking axis from the latch
into the gun. The conduit 66 opens. at its outlet
ing head of the latch so as to move upwardly as
the latch 52 is lowered. A pair of spaced shoul
ders 6| is provided on the ring 56 in position to
65 receive'the lug 68 therebetween when the ring 50
is rotated to dispose the stop cocks in closed posi
tion and the latch is in idle position.
The en
gagement of the lug 60 between the shoulders 6|
prevents rotation of the ring 58 at all times eX
cept when the latch 52 is thrown into latching
position.
ï
Assuming the gun has been moved into oper
ating position, the latching operation is effected
by throwing the handle 58 upwardly. This oper
ation, through the medium of the spring, lifts the
end through the surface supporting the lower end
of the inlet conduit 45 and in position to be placed
in axial alignment and communication with the
horizontal end of the conduit 45 when the gun-is
in operating position.
,
It is apparent that if the gun were removed
while the duct 66 were discharging pulverized
fuel and air, that dangers of explosion would be
too pronounced and it is necessary to provide
means for blocking the >discharge of pulverized
air and fuel from the conduit 66 when the gun
is moved out of position. For accomplishing
this purpose, a slide door 68 is provided, this door
68 lying on the support 41 and being slidable
65
4
2,114,319>
therealong while held in position between’the
guides 48. On the slide door B8 are latch elements
69 which are pivotally connected thereto and
swing outwardly for disconnecting the slide door
and flange 4S. The forward end of the flange 46 is
notched, as indicated at 10, to provide a shoul
der for engagement with the elements 69 for
latching the conduit 45 and slide door for sliding
movement together. The latch elements 69 are
whatsoever. Thus unbalanced load is eliminated
and the vibration so reduced as to be unnotice
able. As in all high speed rotary elements, the
cup is likewise balanced about its horizontal axis.
It is apparent from the foregoing description
that discharge from the supply ducts is practically
prevented except when the gun is latched in op
erating position. Further, it is apparent, that by
utilizing the particular arrangement of spinner
10 so positioned that their outer margins are en
gaged by the inner walls of the guides ¿i8 when
in’connecting position and thus are prevented
from swinging apart and releasing from the
shoulders 10. The guides 48 terminate rearward
15 ly longitudinally of the support 4l short of the
in which the impeller blades are carried directly 10
on the cup 5, that great simplicity is effected, that
the gun as a whole may readily be removed for
cleaning or servicing and that the various parts
thereof may be removed for repair or replace
15
ment individually or in assembled condition.
Having thus described my invention, I claim:
rear limit thereof so that when the innermost
l. A pulverized fuel gun comprising a body hav
end of the flange 46 is moved to the rear limit
ing a fuel duct, a support, means mounting the
of the support, the latch element 69 will be be
gun on the support for sliding movement into
yond the guide 48 and thus free to swing out
and out of operating position, a fuel supply duct
20 wardly, as indicated in dot and dash lines in Fig. having a discharge opening positioned for com
5, and in this position will be swung apart due
to the slope of the shoulders l0. Thus when munication with the fuel duct of the body when
the conduit is slid rearwardly beyond the open the gun is slid along the support into operating
end of the conduit 6B, the slide door is positioned position for supplying fuel to be discharged, a 25
slide door carried by said support and slidable
25 over the open end there and the latch elements therealong to and from blocking relation with
69 are disengaged,
A suitable downwardly projecting pin 'l2 which respect to said supply duct, means for latching
extends into a longitudinally extending slot ‘i3 in the door to the gun for movement of the door
thereby into said blocking relation to the supply
the slide surface 41a. of the support 41 is pro
30
30 vided, the slot 13 terminating in such a position duct when the gun is slid to a predetermined in
operative
position,
and
means
operated
conse
as to engage the pin and stop rearward move
ment of the slide door when the door is in the quent upon movement of the gun into said inop
position for blocking the conduit 66. Obviously, erative position to release the latching means,
whereby the door is released in blocking relation
when the conduit is again placed on the sup
35
to said supply duct.
port
and
moved
into
position
it
abuts
the
rear
35
2. A fuel burning device including a fuel gun,
end of the slide door 68 in a position to be en
gaged by the latch elements @Si when they are a supporting means for the gun, means mounting
again swung inwardly by engagement of their the gun thereon for movement to and from oper
ating position, said supporting means having a
outer edges with the guide members 48 conse
fuel supply duct opening through a wall thereof 40
40 quent upon movement of the gun toward oper
and connected to the gun for discharging into the
ating position.
gun
when the gun is in operating position, and
As explained above, the spinner 5 is flared out
wardly exteriorly near its discharge end and the being disconnected from the gun when the gun is
blades 5 lie substantially in the plane of the moved out of operating position, avalve for open 45
ing and closing said duct, a latch for latching the
45 discharge opening of the extension 3. This re
stricts the passage of air through the opening gun in said operating position, guard means
for movement to and from guarding
while permitting free expansion of the air after mounted
with respect to the latch for preventing
it has passed the opening, with the result that position
releasing operation of the latch when the guard
back pressure is eliminated and the air passes means is in guarding position and for permitting 50
the
blades
6
at
extremely
high
velocity.
Conse
50
release of the latch when the guard means is out
quently, the spinner cup is rotated at a corre
of guarding position, and means to open the valve
spondingly high velocity.
when the guard means is moved to guarding posi
Furthermore, due to this high velocity, fuel tion and to close said valve when the guard means
particles thrown out by the gun will not strike
55
is moved out of guarding position.
55 the adjacent rear wall of the combustion cham
3. A fuel burning device comprising a fuel gun,
ber but will be carried forwardly surrounded by a housing therefor, means supporting said gun in
the stream of air passing the vanes 33 and thus
operating position and for movement to and from
retained in spaced relation to the side walls of operating position with respect to the housing,
the combustion chamber, though subject to the said housing having a plurality of supply ducts 60
60 radiant heat thereof. Due to the fact that the
communicating at their discharge ends with the
spinner cup rotates at such extremely high ve
gun when the gun is in operating position, said
locity, it would tend to vibrate with such intensity gun having a plurality of discharge ducts, said
as to damage the remainder of the equipment gun ducts having inlet openings communicating
were the cup not properly balanced. In fact, the with the discharge ends of the housing ducts re 65
65 slightest unbalanced overhanging load would cre
spectively when the gun is in operating position
ate so much vibration that the gun would oper
within the housing and said gun ducts being dis
ate for only a short period. To eliminate this
connected from the housing ducts when the gun
action, the spinner cup 5 and extension 21, which is moved out of operating position, valves for
form, in effect, a unitary structure, are balanced opening and closing the housing ducts, a latch for
70 across the forward bearing 26 so that, insofar as latching the gun in operating position with cor
the bearing 26 is concerned, the weight of the
portion of the spinner and extension in front of responding ducts of the gun and housing in com
the forward bearing is equal to that to the rear munication with each other, an operating handle
of the bearing. The rear bearing 26 is merely a for the latch, a movable abutment means cooper
guide bearing supporting substantially no weight
able with the handle for preventing operation of
5
the handle to release the latch when the abut
associated with the said support and movable
ment means is in oneposition and for permitting > relative thereto to and from blocking relation with
operation of the handle to release the latch when lrespect to said supply duct, means for latching
the abutmentmeans is moved out of said one >the door to the lgun for movement of the door
position.,:and means operatively associated with
the valves and abutment means and operated to
close the valves consequent upon movement of the
abutment means out of said one position.
4. A fuel burning device including a fuel gun
10 having a fuel inlet duct, supporting means mount
ing the gun for movement to and from operating
position, means for supplying fuel to said duct, a
Valve for controlling the supply of fuel to said
duct, a latch for latching the gun in operating
15 position, guard means operatively associated with
the device and mounted for movement to different
positions and operative to prevent release of the
latch when moved to one position and to permit
release of the latch when moved to another posi
20 tion, and means operated consequent upon move
ment of said guard means to position for per
mitting release of the latch to move the valve to
closed position and operated consequent upon
movement of the guard means to the position for
preventing release or" the latch to move the valve
to open position.
5. A fuel burning device comprising, a fuel gun,
supporting means mounting said gun for move
ment to and from operating position, means hav
ing a plurality of fuel ducts communicating With
the gun for supplying fuel thereto when the gun
is in operating position, and communicating with
the atmosphere when the gun is out of operating
position, a ring rotatably mounted on said last
mentioned means, valves for opening and closing
the ducts respectively, said valves being ñxedly
spaced apart from each other in surrounding rela
tion to the ring, and levers operatively associated
with the valves and carried on said ring for open
ing and closing the valves when the ring is rotated
to and from given positions, means for latching
the gun in operating position and means movable
into position by the ring when the ring is rotated
to position for opening the valves for preventing
release of the latch means.
6. A fuel burning device comprising a gun, a
support mounting said gun for movement to and
from operating position, means having a plurality
of fuel ducts for supplying fuel to the gun, said
ducts being arranged for communicating with the
gun when the gun is in operating position and
with the atmosphere when the gun is moved from
operating position, valves for opening and closing
said ducts, means for latching the gun in oper
ating pcsition, movable means operatively asso
ciated with the valves and movable to different
positions for opening and closing the valves, and
a guard operated by the movable means to pre
vent release of the latching means when the last
mentioned means is moved to a position to open
the valves and to» permit release of the latching
means when said movable means is moved to
position to close the valves, and means for pre
venting movement of said movable means to posi
tion for opening the valves While the gun is un
latched.
7. A gun for pulverized fuel comprising a body
having a fuel inlet duct and a communicating dis
charge duct, a support, means mounting the body
on the support for movement relative thereto into
and out from operating position, a fuel supply
duct having a discharge opening position for com
munication with the inlet duct when the gun is
moved relative to the support into operating posi
tion for supplying fuel to be discharged, a door
thereby into said blocking relation to the> supply
vduct when the `gun is moved to a predetermined '
inoperative position, means operated consequent
upon movement of the gun into said inoperative
position to release the latching means from the
door, whereby the door is released in blocking 10
relation to said duct.
S. A fuel gun and mounting, comprising, an
atomizing spinner, bearing means rotatably sup
porting the spinner in coaxial relation with the
gun, said gun having a lubricant supply duct for
supplying lubricant to the bearing means, means
mounting the gun for movement to and from op
erating position, a valve for controlling the supply
of lubricant to said duct, a latch for latching the
gun in operating position, guard means mounted 20
for movement to different positions and operative
when moved to one position to prevent release of
the latch and when moved to another position to
permit release of the latch, and means moved
consequent upon movement of said guard means 25
to position for permitting release or" the latch for
moving the valve to closed position, whereby the
flow of lubricant to said bearing means is pre
vented while the gun is unlatched.
9. A pulverized fuel gun device comprising a 30
gun body having a fuel inlet duct and a communi
cating discharge duct, a support, means detach
ably mounting the gun on the support for move
ment into and out from operating position, said
gun being detachable from said support when 35
moved a predetermined distance from operative
position, a fuel supply conduit having a discharge
opening positioned for communication with the
inlet duct when the gun is moved relative to the
support into operating position for supplying fuel 40
to be discharged into said inlet' duct, a door,
means mounting the door for movement to and
from blocking relation with respect to said supply
conduit, means operatively connecting the door
to the gun for movement of the door thereby into 45
said blocking relation to the supply duct when the
gun is moved into a predetermined inoperative
position, means for arresting continued move
ment of the door in the same direction from said
blocking position, means operated consequent 50
upon movement of the gun into said predeter
mined inoperative position to operatively disas
sociate the gun from the door, whereby the door
is released in blocking relation to said supply duct
and the gun may be moved additionally for de 55
taching it from the support.
10. A fuel gun including a body, means sup
porting the gun for movement into and out of
operating position, a housing accommodating
said gun body when the gun is in operating posi
60
tion, said housing having a supply duct opening
through a Wall portion of the housing, said gun
having a fuel duct opening at its inlet end
through a wall portion of the body and operative
ly connected to the supply duct of the housing 65
when the gun is in said operating position, the
said ducts being disconnected from each other
when the gun is moved out of operating position,
and means operative consequent upon movement
of the gun into said operating position for seal 70
ing the joint between said cooperating ducts.
ll. A fuel burning device including a fuel gun,
a support, means mounting the gun thereon for
movement to and from operating position, con
duit means for conducting fuel to the gun, a 75
6
2,114,319
valve for controlling the passage of fuel through
the conduit means to the gun, a gun latch for
in it has closed the valve when said gun latch is
in released condition relative to the gun and op
latching the gun in operating position,`con'trol
erative to release and permit operation of the
means operative to open the valve when the con
trol means is moved to one position and to close
the valve when the control mtans is moved to a
latch is in latching position with respect to the 5
diiîerent position, and supplemental latch means
to latch the control means in the position Where
control means to open the valve when the gun
gun.
WEBSTER I. SALLEE.
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