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Патент USA US2111744

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March 22, 1938.
o; L, BOCK
Filed July 2, 1934
@:— @axr Mays.
, Patented Mar. 22, 1938
Oscar L. Bock, Madison Wis, assignor
. Oil Burner Corporation, Madison, ‘Wis-, a
corporation, of Wisconsin
Application July 2,1934, Serial Nb. 733,360 ‘
1 Claim.
(Cl. 137-68)
The present device relates in general to a device into the housing 4 where it is strained by the
for supplying fuel oil to oil burners, and more strainer 3 and then passes through the nipple 5
particularly to a device for controlling the'?ow and through the restricted opening ‘I formed in
of fueloil to an oil burner. More specifically the the supporting or coupling member 8. This lat
ter member ‘8 is provided with a longitudinal or 5
5 invention relates to a device for controlling the
?ow of oil tothe burner so as to assure safety
from ?ooding or over?owing both under normal
vertical bore 9- into which there is arranged for
operation a, valve l0. Ports ll communicate with
and abnormal conditions.
/1 the opening ‘I to supply 011 to thekchamber within
The primary object of the present invention is the chamber housing 8. The oil level rises in the
10 to provide a new and improved device for sup chamber and raises the ?oat l2 which, when ris- 10
plying fuel oil to burners and controlling the ?ow ing, causes the needle valve in to be seated against.
of the oil to the burners, and ‘which is provided the inlet opening ‘I and ‘shut off further fuel sup
ply._ After sufilcient fuel oil is drawn oil from
with new'and novel means} for removing or drain
ing the surplus oil, which. is s‘ e and foolproof, the chamber, the-?oat i2 will again lower and
15 and which is so constructed-an‘ {arranged so that cause the needle valve to again become unseated 15
and permit ‘further supply of fuel ,oil. The oil
the device will operate positively and e?lciently.
Another object of the invention is to provide
?ows out of the chamber outlet i3 and through -
the burner feed line It to the burner it. A
metering device i6, either manually or electrically
controlled, (electrical control being shown) may
improved’ means for controlling the ?ow and
over?ow of oil to the burner by providing asump
2 0 in which certain mechanism is controlled by the
oil level therein and which is so constructed and
arranged that the customary or conventional ex—
be interposed in the line H as shown in the draw
ing. The oil coming through the line» H is fed
to the burner bowl where ‘it flows to the lower
surface and is burned. In case of ?ame failure
or extinguishment, the levelof the oil in the bowl 25
‘will rise to the lower row of holes ii in the ?re
posed over?ow drip buckets to operate shut-0d
means may be eliminated.v
A still further object of the invention is to pro
vide a new and novel control device, which is pro
pot idwhere it will flow into the outer bowl l5
vided with means for controlling the supply of
and then through the return line ' IE to the
fuel to the oil burner, which is provided with new
and novel cutg-out means, which has means for
30 collecting the over?ow as well as providing shut
sump 2t.
level rises in the chamber, raising the ?oat l2,
the needle valve ill will be depressed due to the
action of the ?oat i2 engaging the hinged lever 35
arm ii; The hinged lever arm 2| is pivoted at ~
cated and efficiently operated valve, depending
22 and'has its free outer end 23 operatively con
nected to a part 24 on the valve ill to positively
raise and lower the needle valve in conformance
upon whether or not the sump is to be connected
by a return line from the burner.
Numerous other objects and advantages will be
40 apparent throughout the progress of the follow
The accompanying drawing illustrates a select
ed embodiment of the invention and the view
shown therein is a detail sectional elevation
The speci?c arrangement and construction
herein shown, for the purpose of illustration,
comprises a fuel supply tank i containing a hy
with themovement of the ?oat I2 and maintain
ing a normal constant level within the chamber 6.‘
However, in case of faulty operation and should
the level of the oil in the chamber rise, it will flow I‘
over a spillway 26 into the lower sump 20. As the
oil continues to rise in the ‘sump 20, due to the‘45'
45 through a device and burner showing the various
parts in a practical arrangement.
stant level of oil in the'chamber 6. As the oil
to permit for the reception of excess fuel sup
plied to the burner as-well as providing means for
draining the-device either by the removal of a
35 sump or by the operation of a conveniently lo
trolled by the float 12 so as to maintain a con
‘ off means, and which is constructed and arranged
ing speci?cation.
As previously mentioned, the valve ill is con- 30
over?ow of the chamber 6, a ?oat 26 arranged'in
the sump 20 will rise. An arm 2'! ‘fastened to the
?oat 26 is pivotally connected to a transverse rod
- 50 drocarbon such as fuel oil which feeds through a
or lever‘28 as indicated at 29. This transverse
lever 28 is pivotally mounted as indicated at 30. 50
supplyxpipe 2 through a strainer 3 operatively ar
ranged in a supporting housing 4. A connecting
nipple 5 connects the inlet and strainer housing
d to the chamber housing 6. _Fuel oil from the
55 supply source I passes through the feed line 2
urges the engaginglarm 32 in a downward direc- 55
As the fuel level in the sump 20 raises the float‘
26, the arm 2'! and the lever 28 will be operated
and unhook the dog 3| from its engaging arm. 32
whichis pivoted at- 33.‘ A spring 34 normally
tion‘ and normally holds the dog into engaged
position with the arm 32._ When the ?oat 26
rises to swing the lever 28 on its pivot 30, the dog
3| will become disengaged and the spring 34 will.
when a certain amount of excess fuel has been
cause the needle valve III to be depressed against
its seat ‘I and thereby shut off the feed of fuel
operates positively and ei?ciently. The inven
to the chamber 6.
To again put the device in operation, the 011
must be drained from the sump 20 so that the
?oat 26 will fall to a lower position and allow
the engaging arm to be reset and again take
the weight of the spring 34 off of the needle valve
ID. This latter operation is done by pulling down
on the valve pin 35 to compress the spring 36
to unseat the needle valve 31 from its seat 38
and permit the oil to pass from the sump through
the ori?ce or drain opening 39. The oil will then
delivered through faulty operation or otherwise.
The parts are simple and compact in construc
tion and arrangement and the device as a whole
tion further provides for a return line to the sump
or for a removable sump where no return line
is required or desired. In cases where the return
line is used, and it is deemed advantageous to
use it, the sump may be provided with a spring 10
valve operated so that it will always be free. The
particular construction of the sump outlet valve
is such that the valve cannot be blocked up by
placing objects underneath it as it must be pulled
outwardly to drain the sump. Also the arrange 15
ment of the valve is such that it cannot be left
open accidentally. Valve mechanism designated
?ow out of the sump through the needle valve, generally by the numeral 49 may be provided for
opening 39 which is drilled in the valve body 40. shutting off the communication of fuel from
When the pin or needle valve 35 is released, the the vchamber 6 to the burner feed line l4.
spring 36 will drive the needle valve 31 ‘against
Changes may be made in the form, construc
its seat preventing further discharge 1 oil until tion, and arrangement-of the parts without de
the stem 35 is again pulled downwar y. When parting‘ from the spirit of the invention or sac
the oil is drained as low as possible through this ri?cing any of its advantages, and the right is
latter described means, a small amount of the hereby reserved to make all such changes as
fuel will remain in the burner outlet l9 and in fairly fall within the scope of the following claim.
_ ‘the trap connection designated generally by the
The invention is hereby claimed as follows:
numeral 4|. The burner drain l9 and the con
A liquid control mechanism comprising an in
nection 4| act to prevent air and gases from be
chamber, a control chamber and a sump
ing blown back into the control device when the take
said intake chamber and said sump 3O
- burner is operating and where pressure is around
chamber being in parallel juxtaposition and lo
the inner burner bowl as would be the case when cated directly below the control chamber, a ver
a motor driven blower is attached to the outer tical passage connecting the top of the intake
burner housing l5. It is apparent that gases chamber to the bottom of the control chamber, a
might be forced back from, the bowl l8 through
the connecting , pi
l9 into the sump 20 and
escape into the room if it were not for the liquid
seal between the burner and the device, the liquid
seal being the fuel oil in the trap 4| and the
pipe line l9.
In some cases it might be expedient, conven
ient or more economical to dispense with the
valve 35 and the return line l9. \ If such is the
case, the sump 20 can be made‘ removable by
providing a hanger pin 42 which engages a part
of the sump and a lug 43 and a locking connec
tion 44. This locking connection may comprise
a ‘spring arm 45 fastened to a part of the device
as indicated at 46, and a lip 41 formed on the
sump, the lip 41 being engaged by a-keeper end
48 on the spring arm 45. Therefore, when the
sump is filled with fuel a sumcient distance to
prevent the reception of oil to the chamber 6,
the sump can very conveniently be removed and
the contents poured therefrom.
'uRegardless of the sump- connection and ar—
rangement, the device is of such a construction
that the oil cannot escape from the sump at least
until the mechanism has tripped and shut off
further ?ow of oil.
The invention provides new and novel means
for positively cutting o? the fuel supply line
valve seat disposed at the opening in the control ,
chamber of the said vertical passage, a valve clo
sure rod operatively mounted in the valve seat
and adapted to move longitudinally in a vertical
line into and out of engagement with the valve
seat, a collar on said valve closure rod, a yoke piv 40
otally mounted in the control chamber, one end
of said yoke engaging the collar, a ?oat member
rigidly mounted on the other end of the yoke
means, outlet means in the control chamber, aux
iliary spring actuated means adapted to opera
tively engage the valve closure rod and move the
same to closed position, means normally holding
said auxiliary means out of operative engagement
with said valve closure rod, conduit means open
ing into the top of the sump chamber, said con
duit means opening into the control chamber at a
predetermined level above the level of the outlet
means of the control chamber, sump ?oat means
in the sump chamber, and means operatively con
necting the sump ?oat means with the said hold 55
ing means, said connecting means being operable
to actuate the auxiliary means into operative en
gagement with respect to the valve closure rod
to move the same to closed position when the
sump ?oat means rises in the sump to a prede 60'
termined level.
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