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Патент USA US2055356

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Sept.> 22, 1936.
_
F, A, KOMMER
2,055,356
FUEL suPPLY DEVICE
Filed Feb. l5, 1933
l
2 Sheets-Shea?l l
.
‘
ATTORNEY
Sept. 22, 1936.
-
F_ A_ KOMMER
l
FUEL SUPPLY DEVICE
» Filed Feb. l5, 1933
_
’
2,055,356.
` `2 Sheets-Sheet 2
FIGA
ATTORNEY
2,055,356
Patented Sept. 22, 1936
UNITED -s'rli'l‘lazs >PA'I‘ENT .OFFICE
Z
2,055,350
FUEL SUPPLY DEVICE
Fred A. Kommer, St. Louis, Mo., assignor to
Carter Carburetor Corporation, St. Louis, Mo.,
a corporation of Delaware
.
Application February 15. 1933, Serial No. 656,857
- 12 Claims.
(Cl. 137-68)
This .invention relates to fuel supply devices
for oil burners and the like and more partic
ularly to the provision of a combination con
stant level chamber, fuel control and safety de
vice for house heating oil burners.
In devices of this kind it is customary to store
Figure 8'is a detailed view of parts of the trip
mechanism.
~
Figure 9 is a detailed view similar to Figure 8
but showing the parts yin a diiferent operating
position 'the section being taken through a ldif- 5
ferent part of the tapered screw.
l
Referring to lthe drawings the reference nu
meral I indicates a main body casting having a
boss 2 thereon thru which extends a vertical
opening 3. The body member is mounted on a Vlil
10 tomary to provide a float controlled mechanism , supporting rod or pedestal l and firmly held in
at some point in the fuel line for maintaining
a constant level in a secondary supply cham- adjusted position by means of the set screw 5.
ber from which the fuel is then, delivered to the The vpedestal 4 is mounted on any suitable device
burner. In case of leakage from the burner or such as the base 6 indicated in Figure 1.
'_I‘he body member is provided with a fuel re- l5
from the constant level chamber it is customary
ceivlng inlet port 'I which is preferably provided
to provide a drip bucket to receive possible leak
age and to connect the drip bucket with a valve withA a screw thread as indicated. It will be un
in the fuel line in such a manner that ii' the derstood that fuel is supplied to this opening
bucket becomes filled with fuel which has leaked _thru any suitable conduit means from the main
storage tank which is mounted at a higher level 20
20 from the burner or constant level chamber, the than the body member I. A suitable strainer de
valve will be closed and further supply of. fuel
vice 8 is held in position in the opening 1 by
from the fuel tank will be stopped.
l .
the bushing 9 which forms the end of the con
In view of the fact that the safety valve mus
be operated'by a predetermined increase in the ' duit leading from the main storage tank to the
25
device shown- inFigure l.
25 weight of the drip bucket, it is desirable to have
After passing thru the strainer 8 the fuel
the least possible friction in the valve operating
the oil in an elevated tank and to deliver it by
gravity to the oil burner. In order to control
the rate of fuel supply to the burner it is cus
l mechanism and particularly with regard to the
friction between .the stem of the valve and any
packing. According to my invention I eliminate
the
packing altogether and use a_ double faced
30
valve instead.
'I‘he object of this invention is to provide a
generally new and improved device of the above
character. 'I'he invention will be better under
35 stood from the following description and ac»
companying drawings referring to which: „
Figure 1 is a sectional elevation of a device con
structed according to my invention.
Figure 2 is a plan view of the device shown in
40 Figure 1.
‘
Figure 3 is an end view of
the. device shown
flows upwardly thru the valve seat member I0, y
thru cross passage Il and down the vertical
passage I2 to the needle valve seat member I3.V
A needle I4 controlled by the iloat I5 pivoted at 30
I1 is provided for the purpose of maintaining a
substantially constant l'evel of fuel in the ñoat
bowl or fuel container I6.
The main body memberV is provided with a
downward extension I8 of substantially L-shaped 35
formation as indicated in Figure 1. In the
lower part of this extension is provided an out
let fuel passageway 20 which is screw-threaded
at 2i to receive the bushing nut 22. In the form
of device shown in the drawings two of these out- 40
lets are provided.
The bushing nuts 22 serve to
'
draw the bowl up tightly against the body mem
in Figure 1.
ber
I, the contact between the bowl and body
Figure 4 is an end view similar. to Figure 3 member
being'sealed by gaskets 23 and 24 as
except that parts are broken away and others indicated. The bushing nuts 22 `have outlets 25 45
.45 shown in sections.
which are screw-threaded for connection of the
Figure 5 is a detailed view showing part of the ’ pipe line which leads to the fuel burners.
trip mechanism.
A suitable control valve 26, screw-threaded
Figure 6 is another detailed view showing parl',- into the casting I and provided with a'combined
of the ` trip mechanism. The view is taken indicator and operating handle 21 is used to con- 50
50 along line 6-6 of Figure 1 looking in the di
rtrol the inlet opening to each one of the outlet
rection of the arrows.
passages 20.
Figure 7 is a fragmentary sectional view taken
along the line 1-1 of Figure 2 looking in the di
coverplate. above the top of the casting and held
in position by the spring 29 which also holds the
valve in adjusted position. 'I'he constant level 55
rection of the arrows,
`
A dial plate 28 is mounted on tlie ,
2,055,856
chamber I5 is vented at 35 to the atmosphere at a
point substantially above the normal constant
level A--A.
In case the iioat valve I4 should
leak, the constant level chamber would illl up and
leak thru the vent 38.
In order to shut oil the ilow of fuel to the con
stant level chamber in case of such leakage. a
conduit 3| is provided* to convey any fuel leaking
‘ from the vent 38 into a trip bucket 32.
The trip
bucket is provided- with a perforated cover 33,
crimped in position by means of the annular cor
rugations 34 in the bucket wall. 'I'he perfora
tions in the cover 33 'are indicated at 33a, and
these are for the purpose of' admitting fuel to the
lower part of the bucket, the cover serving to
permit the escape of air and to keep any inci~
~dental trash from dropping to the bottom of the
bucket and being immersed in the oil.
' It should be noted that the trip bucket 32 is
20 not necessarily placed at the level indicated in
Figure 1, but may be substantially lower so that
leakage from the fuel burner may be conveyed
by gravity to this bucket, the same as leakage
from the constant level chamber is conveyed to it.
,25 It will be understood that in certain installations
it may be desired to shut oil’ the ilow of the
fuel from the main tank in case of serious leakage
from the burner as well asin case of leakage from
30
the constant level chamber.
e
The main casting is provided with an upwardly
extending bracket 35 to which a rocker arm 36
is pivotally connected as at 31. The bucket sup
porting arm 38 is also pivoted to the bracket 35
35 as indicated at 39.
Arm 38 has a cam surface
48 (Figs. 5, 8 and 9) which underlies and con
tacts with a bridge 4|, formed on the rocker arm
3E. 'I'he relation of the cam surface 40 to the
pivot .39 is such that when the arm 38 is in its
uppermost position, as indicated in solid lines in
40 Figure 1, the cam has not reached the upper
dead center of its movement in the counter-clock
wise direction and, therefore, downward or clock
wise movement of the arm 38 may be resisted by
a downward pressure on the bridge 4|.I This
45 pressure is supplied by means of the spring 42
which is held in position between a retainer 43
and a. second bridge 44 on the lever 36. The re
tainer 43 is mounted on the end of the stem of
the valve 45 which is adapted, when closed, to
shut oiï fuel ñow thru the valve seat I0. The
valve 45 is provided with a stem548 and collar 41.
A substantial amount of adjustment of the pres
Sure at which the valve will be closed is provided
` for by the adjusting screw 48 which is mounted
55 in the bracket 35 and is provided with a tapered
portion 49. The tapered portion terminates in a
pilot 58, as indicatedvin Figure 6. The lever 38
is provided with a lug or cam 5I, the lower por
tion of which contacts with the tapered surface
60 49 and thereby limits the upward or counter
. clockwise movement of the lever 38. By adjust
ment of screw 48, the linut of counter-clockwise
movement of lever 38 can be varied toward or
_away from the upper dead center position, which,
65 of course, varies the pressure required to release
cam 40 from engagement with bridge 4|, as in
_ Fig. 9, and trip the mechanism. The uppermost
The end oi' the lever 38 is provided with a
hook 54 to receive the bucket supporting link 55.
The lower portion of the link 55, comprises the
T-shaped member 55 which may be inserted thru
a slot 51 in the cover until the narrow neck por
tion 58 lies in the circular opening 59 in the
center of the cover and then turned 90 degrees
with , respect to the cover to move the shoulders
60 out of registry with the slot.
In order to further insure against leakage from 10
the device, I preferably cast a downwardly ex
tending annular recess 55 in the main body cast
ing surrounding the bushing 52 and the valve
stem 45.' Fuel leaking past the valve seat 53
will run down into this annular recess from 15
which it is conveyed down into the iloat cham
ber thru the substantially vertical passageway 51
as indicated in Figure 2.
,
In operation the device is mounted at a suit
able heisht on the rod 4 to supply oil to the oil 20
burner and the opening 1 is connected to the
main fuel supply tank. Each of the openings 25
is connected to a burner which is to be operated.
-'I‘he valves 25 are then adjusted to supply the
proper amount of fuel to the burners and the
arm 38 is lifted to the position shown in Figure 1.
The set screw 48 is then screwed inwardly until
25'
' the trip mechanism operates by its own weight
Without any oil in the bucket 32. The screw 48
is then turned back approximately one-half a
turn and the lever 38 again lifted. This opens
the valve 45 and permits fuel to ilow in thru the
passages 1--|I1--| |-|2-|3 into the iloat bowl I 6.
When the level A-A is reached, the float valve |4
is closed automatically.>
35
It will be understood that the bucket 32 is placed
at the level shown in Figure 1 only if it is de
sired to operate the trip mechanism by leakage
from the iioat chamber I5 without regard to the
leakage from the burner. If the leakage from
the burner is to be used to operate the trip mech
anism the bucket 32 will be placed at a some
what lower level than that shown in Figure 1
and a conduit provided to convey leakage from
the burner by gravity to the bucket.
As long as the burner is in operation with the
lever 38 in the position shown in Figure 1, the
upper end of the valve member 45 is held against
the valve seat member 52 and the contact is
sealed by the gasket 53. The primary force 50
which holds the valve in this position is the weight
of the bucket which tends to push upwardly on
the bridge member 4 I, raising lever 35 and press
ing against spring 42 which in turn lifts the valve
and holds it in position against gasket 53.
55
Whenever a substantial amount of oil collects
in the bucket either by reason of leakage from
‘the constant level chamber or from the burner
so as to increase the weight of the bucket aïpre
determined extent, the upward pressure on the 60
bridge 4| becomes so great as to compress lthe
spring 42 and allow cam 40 to slip from under
the bridge 4I. The lever 38 then drops to the
position indicated by the dotted lines in Figure 65
1 with the lug 65 of lever 38 resting on bridge 44
which, in turn, strikes the collar 41 on the valve
position of the valve 45 is determined by a com- ^ 45, forciblyclosing the valve against the lower
bination bushing and valve seat member 52 which
70 is screw threaded into the main body member.
‘The member 52 is provided with a bore which
loosely receives the stem 45 of the shutoi! valve
. and the lower end of this bore is formed as a
valve seat which may, if desired, be provided with
75 a suitable seating gasket 53.
valve seat I 0. This, of course, moves the valve
45 away from the gasket 53, but with the valve
closed against the lower seat l0, the possibility 70
of leakage at 53 is of no importance. Dropping
of valve 45 completely shuts oft the iiow oi
oil from the main tank to the constant level
chamber and burner and keeps it shut ofi' until 75
2,055,351:
,
3
the trouble is located and the trip mechanism is and yieldably holding said valve against said
bushing, a trip bucket mechanism contacting
reset by the operator;
The invention is not hunted in details' _to the ‘ with said lever and normally holding it insaid
structure shown but may be modified in various position, and means operated upon a -predeter
respects as will occur -to those skilled in the art mined increase in the weight of said trip bucket
and the exclusive use of _ al1 such modifications mechanism for moving said valve'to its opposite
that come within the scope of the appended position and holding it there.
6. In a safety device, a mainbody member hav
claims is contemplated.
»
ing a passageway therethrough, a valve extending
I claim:
'
10
1. A device of the class described comprising into said passageway and adapted 'to control the
same, a pivoted arm mounted on said body mem
a main body member, a downwardly extending
projection on said main body member, a sub
ber. a drainage bucket carried /by said pivoted
arm, a second arm pivoted'to said body member,
said second arm being adapted to move said valve
said extension, means for attaching said con
tainerfvto~~said~ extension, a- fluid passageway to open or closed position, said first arm having
formed in said attaching means, a fluid passage-~ a portion engaging‘a portion ofthe second‘arm
way in' said body member communicating with and normally operated by the weight’of the trip
said container, and a float valve mechanism in bucket-to hold said valve in open position,.said
said container for controlling said _inlet passage-` iirst named arm having a second portion adapted 20
to cooperate with another portion of said second
way.
l
stantially cup shaped fuel container surrounding
' 2. A device of the class described comprising
a main body member, a downwardly extending
projection on said main body member, a substan
arm to close the said valve when the normal
weight of said trip bucket is exceeded.
7. In a safety device, a body member having a
passageway therethrough. a double seated valve
for controlling said passageway, a first arm piv
oted to said body member and adapted to carry a
said container to said extension, an outlet pas
sageway formed in said screw-threaded means, drainage bucket, a second arm pivoted to said
member and adapted to operate said valve,
a control valve mounted on said body member , body
for controlling said outlet, an inlet passageway said first arm having a portion for contacting said 30
in said body member leading to said container, second arm to normally hold said valve closed
and a float valve mechanism in said container against one of said seats and said first'aïn’having
tially cup shaped fuel container surrounding said
extension, screw-threaded means'for attaching
another portion constructed and arranged to hold
for controlling said inlet passageway.
said valve against the other of said seats under
3. A safety device of the class described com
.Y
prising main body structure, a fluid passageway abnormal conditions.
8. In a safety device, a body member having a
formed in said structure, a valve seat in said passageway
therethrough, a valve for controlling
passageway, a valve cooperating with said seat
said
passageway,
a first arm pivoted to said body
to control said passageway, said valve having a
head andy stem. said stem being of smaller di ‘ member and adapted to carry a drainage bucket
ameter than said valve and that portion of said for urging said arm in a certain direction, a sec
ond arm pivoted to said body member and adapt
valve adjacent said stem forming a seating por
ed to operate said valve, said first arm being con
tion, said body member being apertured for re
structed and arranged when urged in said direc
ceiving said valve stem, and trip bucket mecha
nism constructed and arranged to hold said valve tion under certain conditions to contact said sec
ond arm to normally hold said valve in one po
portion against the portion of said body struc
sition and when urged in said direction under
ture around said aperture so as to seal said different conditions to contact with said second
aperture during normal operation, and to oper
to hold said valve in another position.
ate said valve in the other direction to close said arm
9. In a safety> device, a main body member hav
passageway when the weight of said trip bucket ing a fuel passageway therethrough, said fuel
and its contents exceeds _a predetermined ' passageway comprising two portions on an angle
amount.
to each other and a chamber at the junction o'f
4. In a safety device for oil burners, a main said two portions, an opening in a wall of said
body member having a passageway therein and chamber co-axial with one portion of said pas
a bracket thereon, a double ended valve extend
ing into said passageway and adapted to close
the same when moved in one direction,
a
bushing threaded into said body member and
loosely surrounding the stem of said valve, the
inner end of said bushing terminating in a seat,
a lever pivoted to said bracket and yieldably
holding said valve against said seat, a second
lever pivoted to said bracket for holding said first
named lever in position, a trip bucket carried by
said second lever, and means whereby a prede
termined increase in the weight of said bucket
and its contents will remove said valve from said
seat and cause it to close said passageway.
5. Ina device of the class described, a body
member having a bore, a valve seat member
threaded into said bore, a double-faced valve
member having one face adapted to cooperate
with said seat member and a stem in said bore,
a screw threaded bushing 100581? Surmunding
said valve stem, the lower end of said bushing
being adapted to serve as a seat for the other
75 face of said valve, a lever pivoted to said casting
35
40
45
50
sageway, a valve mounted in said chamber, said
valve having a stem loosely mounted in said open- ,
ing, a gasket surrounding said opening and said
stem within said chamber, and means including
a drainage bucket for normally holding said valve
against said gasket to seal said opening and for '
operating said valve to close said passageway.
60
10. In a device> of the class described, body
structure including a fluid passageway having
a valve seat therein, a pair of levers pivoted to
said structure, valve means cooperable with said
valve seat and having a> stem portion extending
65
through an aperture in said body structure, and
weighted means applied to one of said levers, the
other lever being constructed and arranged to se
lectively actuate said valve in directions to seat
' against said valve seat for closing said passage 70
way and against said body structure for sealing
said stem-receiving aperture, said weighted lever
having portions for engaging the other lever so
as to move the same in a direction to cause said
valve means to seal said aperture during a portion 75
4
9,055,350
of the movement of said weighted lever in one
A direction andato close said passageway during an
other portion of the movement of said weighted
.lever ln said direction.
11. A device as specified in claim 10 in which
said valve-actuating lever includes a pair of abut
structure including a iluid .7: e;
eway having a
valve seat therein, a pair of levers plvoted to said
structure, valve Ymeans cooperable with said valve
seat and having a stem portion extending through
an aperture in said body structure, and adjust
able means for applying variable- resistance to
ments and said weighted lever includes a projec~ v
pivoting
ofv said weighted lever. the other lever
tion constructed and arranged to engage one of being constructed and arranged to selectively ac
said abutments during a portion of the movement~ tuate said valve means in directions to seat
ot said weighted lever in the referred-to direction against said valve seat for closing said passage
and to actuate said lever in a direction to cause
said valve means to seal said stem-receiving aper
ture, said weighted lever also including a second
projection constructed and arranged to engage
the other abutment on said valve-actuating lever
during another portion oi.' the movement of said
weighted lever in said direction to cause said
valve means to close said passageway.
12. In a device of the class described, body
way and against said body structure for sealing
said stem-receiving aperture, said weighted lever
having portions for engaging the other lever so
as to move the same in a direction to cause said
valve means to seal said aperture during a portion l
of the movement of said weighted lever and to
close said passageway during another portion of
the movement of said weighted lever.
"
FRED A. KOMMER.
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