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Патент USA US2411539

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Nov. 26, 1946.
Filed- May 10, 1944
3 Sheets-Sheet 1
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Nov. _26, 1946.
Filed May 1o,4 1944 -
3 ‘sheets-sheet .2
6` ¢“ÈçNTOR
Nòv. 26, 1946.
~ E. G. GUNN
Filed May '10, 1944
3 Sheets-Sheet 5
Patented Nav. 2e, 1946v l
` 2,411,539
UNrrsojsrATss PATENT. oFF-ici: .
-Liomn Fmrsit ms'rArLArroNÍ ~
Earl G..Gunn, Providence, R. I., assignor to `l‘rmn
Corporation, a corporation of Rhode Island
Application May 10, 1944, Serial No. 534,929
6 Claims.
(C1. 1134-6)
This invention relates'tovthe installation of 'a
case without being filtered which maintains cir
culation to keep the whole warm while _the oil
that is filtered will move inwardly through the
In the use of a filter of the type- installed for
iilter medium and leave the unit through the
the filtering of lubricant in an internal combus
center thereof. The `casing itself thus may be
tion engine, it is frequently diflicult to keep the
connected so that it forms a by-pass -for the oil
filter warm where flow is slow and also diilicult to~ . which may be supplied under pressure while the
determine the condition of the filter and especially
clean oil is separately conducted back to the reser
is this true where a series of iilters »are hooked
voir. Suitable controls are inserted that the clean
oil may be eitherl bled or so controlled in its flow
up in a parallel relation. _
One of the objects oi this invention is to ar 10" that where a'plurality of units are used any
selected for bleeding
range a filter for removing from the liquid sub
’ one 'of the u’nits maybe
_stantially all of the ñlterable material in a single ~ whereby the clean oil that it is passing may be
examined. A transparent section may be in
Another object of this invention is to kee'p a
serted for examination
where desired.
to the drawings.. I0 designates _
filter warm'where the liquid to be iiltered is con
generally an internal combustion engine disclos
siderably above room temperature by use of the _*
warm liquid which is to be filtered especially
ing a cylinder ll, water jacketed as at I2 with a
where the ñltrate passes'rather slowly through
piston i3 in this cylinder having aconnecting
rod Il connecting it to the crank shaft I5 which is
Another object of >this invention is to provide 20 housed by casing i6 providing' a sump I1 for
the illter. .
` a citer and conduits thereto so that >the nitered
' containing the lubricating oil. A pump for the
oil may be bled or examined in its return to the
circulation of this oil is designated i8 which will
draw oil through the conduit I9 from the sump
may be determined and from this condition one
I'l ~and discharge it through the conduit 20 under
may judge whether the iilter has reached its con-\ 25 -pressure through the filter units designated gen
lreservoir whereby the condition of this ñltered oil
erally 2l which may be arranged in a battery of
taminant collecting capacity.
Another object l of
this inventionis to so. ar- ‘
range the conduit system that any one of a plu
- rality of ñlters connected in parallel relation may
be tested in this manner.
With these and other objects in view, the in-.
vention consists of certain novel features of con
struction, as will be more fully described and par
ticularly pointed out in the appendedclaims.
In the accompanying drawings:
Fig. 1 is a diagrammatic view illustrating in
section apart of an internal combustion engine
and also illustrating a plurality of filter units
any number and hooked up in parallel relation. y
Each of’these iilter units as shown in greater.
detail in Fig. 3 comprises a casing ~22 oi.’ a
suitable cross sectional shape, the shape here
shown being for illustration cylindrical, with an
inlet opening 23 at'one end and a similar open
ing 24 adjacent' its other end. AA cover 24' for
this case is provided and may be held in place by
a _bolt 25 which threads into a center tube 26
about which the removable cartridge-21 is located.
This cartridge -21 is of a shape`v similar to the
. casing having perforations in .its cylindrical wall
v ` connected in parallel with relation to the oil _sump
28 while its ends are imperforate and are sealed
40 with the tube 26 so that oil cannot pass into the
of the engine;
Fig. 2 is a view taken on substantially line 2--2
center tube at either end of- the cartridge. The
of Fig. 1;
` i
arrangement is such that nitrate may pass later- ,
Fig. 3 is a sectional view of the ñlter unit;
Fig. 4 is' a sectional view of a conduit control in
ally: from the outside of the cartridge inwardly
the `ñlter- medium- 21H and enter the
45 through
the iiow line of the system;
center tube 26 where it is discharged through -a '
Figs. 5, 6, 7, and8 are
conduit 30 leaving the ñlterable material in the
but illustrating diiierent modiñed arrangements.
iilter medium in a single pass ofthe liquid there
In carrying out this invention I utilize a filter
through as distinguished from repeated passes in ,
unit of the type wherein the liquid is ñl
some filters. ’I'he ii-lter medium consists of a plu
>tered b_y a single pass of the liquid through the 50 rality of disks 21’ more speciilcally described in
filter unit. More specifically the type of unit
the above-mentioned Hicks application Serial No.
which I utilize is that illustrated in the -applica
494,223. Thearrangement is such that the ill
tion of Richard _V. Hicks, Serial N0. 494,223 :ñled~ - I trate or ñltered oil enters the center tube to dis
July 10, 1943. The ñlter case provides an ar
charge downwardly through the conduit 3U. '
rangement so that oil may'enter and leave .the
In the cases where the lubricating oil is 50°
F. or more above room temperature, the pressure
conduit 2d from the pump i8 is connected to a
header 3i which in turn is connected to each
of the openings 23 of the filter unit by a conduit
32. An upper header designated generally 33 is
connected to each of the upper openings 24 by a
duit 5| conducts oil from the sump IT’ of the
engine to the sump 50. This arrangement pro
vides a dry sump in the engine crank case. Cor
responding parts are designated by the same ref~
erence characters where they are identical with
Fig. 1 or with the same reference characters with
a prime added where they are similar in func
conduit 34 while this header joins the oil head 35
tion but not identical inshape,v length or size.
in the engine block. The header 3i is connected '
In Fig. 6 I have illustrated ñltration for the
directly to the header 33 by a conduit 36 of smaller 10
lubricant in a scavenger circuit. This circuit may
internal diameter than the diameter of the con
be used regardless of the oil temperature. The
duit 28,35, or 33. A common return pipe or con
. duit 3l collects clean oil from the conduits 30 and ` . pump I8 will draw the liquid through the conduit
i S from the sump l1 and conduct it through the
returns it to the sump through its discharge 33.
conduit 2li and header 3i to the ñlter unit 2i
A glass tube 39v may be inserted in this conduit
and to the header 33 in the same manner as lillus
that the condition of the filtered oil may be
trated in Fig. 1. The conduit 36’ will be of a
size smaller than the conduits of the headers
A control dû, shown in greater detail in Fig. 4,
3| and 33 and'by this shunt arrangement tur
is placed at the junction oi' the conduits 3i) and
bulence in the filter is minimized. Separate sump
3l and comprises a valve «tl which may be rotated
in its body portion dë so as to block oiï any4
55 is provided and a conduit 56 extends from the
header 33 to this sump. A pressure regulator
one of the four lines or conduits A, B, C, D, which
valve valve 5T may be placed in this conduit as
extend outwardly at 90° -apart from the center
well as a pressure gage 58. The same arrange
of this body. A suitable handle ¿i3 is provided
ment for the discharge of clean oil which is passed
for rotating this> valve to the desired position.
through the filter is illustrated in Fig. 6 as in Fig.
Pump id will draw lubricant from the sump
5, there being conduit 37 in which the various
il and force it under pressure into each of the
valves d2 are provided which -l?iave their taps d5,
casings` from theheader 3i. Sonie of this oil
the discharge spout being designated 38'. '
will pass upwardly through the casing or unit,
In Fig. 7 I have illustrated a sump il of an
by-passing the nlter 2i, and passing outwardly
through the conduit 3d to the header 33 and then 30 internal combustion engine but from its arrange
ment it is quite evident Áthat iìltration is not
particularly connected with the engine and might
[be arranged for the filtration of oil from sump
tube 2S will be at zero pressure and consequently
entirely separate from the engine. The pump IB
some of the oil under pressure will pass through
the filter medium Z'l' and into the center tube 35 is driven from a motor 60 and draws oil from
26 and thence downwardly through the conduit
sump l'l to the conduit I9, discharging through
` tu into the return conduit 3l' -and thence back to
the sump as at 38.A This oil will be cleaned in
a single pass through the filter. If it is desired
the conduit 20 to a header 3l which supplies the
filter casings 2l, The header 33 is connected to
the casing as at 34 similarly as heretofore de
to determine the condition of the oil returned
from the entire battery of filter casings, it may
be observed at the glass 39, or if it is desired to
tap oil from all of the ñlter batteries the valve
below the casing nearest to the reservoir will be
turned to position D (see Fig. 4) when oil enter
ing through positions A and B will be discharged
through position C and out of the tap 45.»
If it is desired to tap oil from all but this par
ticular casing then the closure will be moved
to position A. If it is desired to tap oil from
only this particular unit the closure will be moved
to position B. It will be readily- apparent that
any selected group of i'llters may be tested by
scribed and includes a pressure gage 58 and pres
l sure regulator valve 59, while the conduit 56’ re
turns to the sump discharging as at 6l. Clean
oil is collected by a conduit 31 from each of the
nlters as at 30 through the control valves d2 hav
ing taps45 While it is connected back to the
sump through the discharge 38.
The operation of the various flow circuits illus
trated will be clear from the description of the
circuit given in Fig. 1. By-passing the oil
through the filter casing will cause it to be
warmed up and the oil becomes warm so that bet
ter operation may be had. .By the use of the
. pressure gage pressure on the oil may be ob
served at> all times'while by the use of the pres
55 sure regulator‘valve the flow of the oil may be
checked or controlled at certain desired pres
` of the valves of the various units which go to
, sure.
use of a valve of this character or any particu
lar unit may be tested by suitable manipulations
form up the battery.
It will be observed that the ‘liquid supplied by
If dirty oil is coming from any one of the
filter units, it will be observed and the cartridge (20 the pump in each of the Various modifications
except Figures A6 and 7 passes into the lubricating
therein may be replaced.
system of the internal combustion engine, with
In some cases where it is unnecessary to warm
the exception of the filtrate or amount of lubri
the ñlter, the header 33 and the conduits 34
cant which passes through the filter medium and
may be omitted from the point 48 of the con
nection of the conduit 36 so that a by-pass rela 65 returns to the lubricant reservoir.
I claim:
tionship in the filter unit 2i is not used as shówn
l. In combination with an internal combustion
in Fig. 8. In this case all by-passing will occur
outside of the ñlter unit and such pressure as
occurs in the iilter unit will cau’se the oil therein
to be passed through the filtering medium and
the nitrate to be discharged through the con
duit 3D.
In Fig, 5 I have illustrated an arrangement
which is similar to the showing `in Fig. 1 except
that a separate sump 5i! is provided and a con
engine, having a circulating lubricating system,
including a reservoir for lubricant which may be
contaminated, a pump to withdraw lubricant
therefrom and circulate the same to a point of
use, eventually returning the lubricant to the
reservoir, a ñltering unit comprising a casing in
said circulating system, having continually open
inletl and outlet conduits through which lubricant
75 flows _to the point of use by the action of said
pump -and by-passing the filtering element. fa
.filtering element in said casing through which
-ñltratepasses from the lubricant and a separate
conduit to return said iiltrate to said reservoir.
2. The combination set forth in claim 1, where
4`. The combination set forth in claim i', where
in a continually open but restricted conduit con
nects said inlet and outlet conduits to place said
iiltering unit in shunt relation to said pump cir
culated lubricating system.
5. The combination set forth inr claim 1, where
in said iiltering unit is in shunt relation to said d
in said ñltering unit comprises a plurality of fli- f '
pump circulated lubricating system.
ters arranged in parallel relation.,
3. The combination set forth in claim 1,- where
6. The combination set forth in claim 1, where
in a continually open conduit connects said inlet lÓ in the lubricant reservoir is the crankcase sump
and outlet conduits to place said iiltering unit in
-shunt relation to said pump circulated- lubricat
ins system.
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