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Патент USA US2122227

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June 28, 1938.
Filed NOV; 4, 1956‘
[nz/c' nior
Elmer/F QOehZer
Patented June 28, 1938
Elmer E. Goehler, Portland, Oreg., assignor to
Vortex Manufacturing Company, Portland,
0reg., a corporation of Oregon
Application November 4, 1936, Serial No. 109,119
5 Claims.
This invention relates to ?ttings for fuel oil
tanks and especially to a unitary ?tting for a
. Fig. III is a section taken on the line III-III
of the indispensable oil ?lter used with such
of Fig. I.
In the drawing, the sections l and 2 respectively
represent the top and bottom members of a fuel
oil tank which may be circular or rectangular.
3 is a ?tting, preferably cast of metal that is
provided with two independent connections 4 and
5, each forming a part of independent inner pas
sageways or ports such as do. and 5a.
fuel oil tank such as is used for a domestic oil
heating system.
The objects of this invention are to overcome
objections heretofore thought insurmountable,
particularly with reference to frequent plugging
Practically all systems now in use consist of a
fan for furnishing air to a burner, an isolated oil
tank, an oil pump located on the same base with
the fan, a metering oil atomizing device or nozzle
and a mechanical ?lter of some chosen type so‘
that the invariable sediment, sludge and impuri
ties of the cheap oil used will not plug the ex
ceedingly small passageways in the atomizing de
(Cl. 220—85)
Since pressures requisite for atomization are
20 high, the pump must be of the positive displace
ment type and since a positive displacement pump
of just the capacity required is out of the ques
tion, an overflow pipe between the pump and the
atomizer is likewise always required. In these
25 systems all of the oil pumped is ?ltered, though
a very large percentage of it returns to the tank
through the over?ow pipe, usually keeping the
tank agitated so that the sludge does not all
settle to the bottom as it should but is kept mixed
with the tank contents.
The principal object of my invention, there
fore, is a device to be used in combination with
the old, well known and tried system, outlined
above, that will not only protect the suction pipe
‘ of the pump from sludge accumulations but will
insure that the impurities of the fuel oil tank
will pass from the tank to the ?lter only once,
A plug portion 6 may be threaded to ?t a tank 10
opening as suggested in Fig. I, or any type of
joinder‘ may be used.
The connection 4 will be properly connected to
the suction inlet of a fuel oil pump in any suit
able manner and the connection 5 will be suitably 15
joined to the overflow outlet of an oil burner
unit of the general type heretofore indicated.
Below the plug portion 6 are two pipes which
extend different distances into the fuel tank,
represented by l and 2, the suction pipe indicated 20
by numeral 8 being the longer and hence pene
trates the tank further than the overflow pipe 9.
A circulation cup Hl, which is the essence of the
present invention, is positioned below the ends
of the pipes 8 and 9 in such manner that both 25
free ends of these pipes are submerged below the
upper rim Illa of the cup ill. The cup It may
be supported in any preferred manner but I
prefer to weld it to the pipes 8 and 9 as shown
in Fig. I, the welds being indicated by I?b.
I also prefer to make the device as a unitary
structure so that it may be inserted in the tank,
for which purpose the opening for the plug, or
whatever substitute, will be larger than the out
side diameter of the cup.
By the simple but effective device of the cup l0
positioned properly below the suction and de
livery pipes, all oil returned to the tank is avail
able for repumping, save only that the‘ actual
consumption will flow over the top of the cup‘ to 40
notwithstanding as much as 80 or 90 percent of
the capacity of the pump as operated is returned
Al O constantly to the storage tank through the over . make up for what is used. Since the oil passing
flow pipe and ?ltered oil returned to the tank once through the ?lter to the atomizer returns
through the over?ow pipe will be available un
to the cup as ?ltered oil and is: again repumped,
contaminated as pump supply, except for the very the net result is much cleaner oil to the atomizer
small increment of oil to replace that actually than heretofore and less clogging trouble with 45
the atomizer element.
I accomplish the named objects and others that
The cup should be at least two and a half
will be immediately-apparent to those skilled in inches high for a 500‘ gallon tank since with a
the art to which this invention appertains, by round tank that much height will be required so
the mechanism illustrated in the accompanying that the inevitable sludge accumulation does not 50
over?ow the cup and the tank will of course be
drawing, in which,—
Fig. I is an elevation of my invention, partly provided with the usual sludge outlet at its ex
in section and in part broken away to show its treme lower inside point so that it may be made
application to an oil storage tank;
Fig. II is a projection of a part of Fig. I; and
ready for re?ll when required.
Having disclosed my invention so that it may 55
be understood as to construction and having ex
dividual pipes connected to the head in registry
plained some of its principal advantages, what I
with the respective passageways that are adapted
to reach nearly to the bottom of a tank and an
open top cup member positioned to submerge the
free ends of both pipes, that is made rigid with
claim as new and desire to secure by Letters Pat
ent, is,—
l. A tank ?tting for a fuel oil tank comprising
in combination an oil suction pipe, an oil over
?ow pipe and an open top circulation cup posi
the external surface of one or both of the pipes.
tioned to submerge the free ends of said suction
as an open top circulation cup member that is
and over?ow pipes below the edge of the open top
adapted‘ to submerge the free ends of suction
of the cup.
2. A tank ?tting de?ned in part as a head‘
and over?ow pipes projecting into a tank suction
and over?ow pipe ends made rigid with the cup
and means for maintaining the said cup in posi
tion with respect to the said free ends of the
member that is adapted for tight joinder with
the top of an oil tank and having separate‘ suc
tion and over?ow passageways therethrough, in
15 dividual pipes connected to the head in registry
with the respective passageways that are adapted
to reach nearly to the bottom of a tank and an
open top circulation cup member positioned to
submerge the free ends of both pipes.
4. A sediment cup for a fuel oil tank de?ned
3. A tank ?tting de?ned in part as a. head
member that is adapted for tight joinder with
the top of an oil tank and having separate suc
tion and over?ow passageways therethrough, in
5. A tank ?tting defined as a two ported head, 15
pipes made rigid with the head in registry with
the ports that are adapted to de?ne two inde
pendent conduits to a point near the inside bot
tom of a tank upon which the head is mounted
and an open top circulation cup member posi 20
tioned to submerge the ends of both pipes below
the rim of- its open top.
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