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Патент USA US2412232

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‘Dec. 1.0, 1946.
-
B. G. sum»;
VALVE
,A
'
’ 2,412,232
'
Filed’ April 16, 1945,
}
BERNARD ' 6‘.
BY
'
‘
mvsm'oa
SUTTON
‘
r
2,412,232
Patented Dec. 10, 1946, ‘
(UNITED S-1~_,;;|~|;;_Sv PATENT oFFlcE’j
,
VALVE
.
Bernard G. Sutton, Algonac, Mich, assignor to
Bendix Aviation Corporation, South Bend,
. Ind, a corporation of Delaware.
I
Application April 16, 1943, Serial No. 483,243
10 Claims. (Cl. 210-165)
1
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and herein described in detail, it is to be under
This invention relates to ‘?lters and more par
ticularly to by-pass valves therefore.
stood that the disclosure is given solely for the‘ I
Filters used to ?lter ?uid (such as lubricants,
fuel or anti-icing ?uids for aircraft, or the like)
under pressure to machines, engines, or other de
vices :have ?lter elements which often‘become
purpose of illustrating the invention and is not
intended as a limitation thereof to the construc- .
clogged'or plugged with dirt and other. foreign
tions disclosed, the appended claimsvbeing in- '
tended to cover all modi?cations and alternative
constructions falling within the scope of the in
matter. When this occurs there‘ will be a failure
vention.
‘
Throughout the ‘drawing similar reference _
. in the. supply of the ?uid which may-result re
spectively in serious damage to said machines; 10 charactersrepresent similar parts although where
‘said parts are modi?ed in structure and operation
failure of the-engine, or icing of the parts nor
mally supplied with anti-icing ?uid.
_
' they are given aJfurther differing reference
'
.It is therefore an important object of the pres
character.
_
' Referring ?rst to Figure 1 there is illustrated a
ent invention to provide a by-pass valve which
will permit ?uid passing through the ?lter to by 15 well known type of ?lter whi‘c'h‘includes a ?lter
pass the ?lter element when the .‘atter becomes
so clogged or plugged with dirt or other foreign
matter that little or no ?uid can pass there
head I0 having a ?uid inlet l2 and an outlet ll. ~
through.
is attached to the head In by means of the usual
It is another object of the present invention to
A bowl l6, whichmay be of transparent material,
connects the inlet and the outlet together and '
20
readily. used in present standard types of ?lters,
particularly those wherein the edge type of flter '
element is used.
clamp Hi, there being a gasket 20 interposed be
tween the bowl and the head of the ?lter to pre
vent leakage between these parts. The ?lter also
includes the usual cylindrical ?lter element 22
which comprises a plurality of stacked washers of
provide a device of this character which-can be
-
25 known character between which are narrow-?l
Filters generally are provided with a bowl, i.
tering passages or spaces extending between the
periphery of the element and vertical ?uid pas
sages within same, said ?lter element being inter
’tposed between the inlet l2 and ‘the outlet H for
30 straining or ?ltering out foreign matter entrained
in the ?uid passing through said ?lter. Gen
erally much of such foreign matter collects .On the
the lower portion or sump in'which some of the '
foreign matter strained out of the-?uid by the
?lter element collects and itis therefore still an
other object of the invention to provide a device
of this character wherein the by-pass valve is
adapted to be secured between the ?lter element
and the head of the ?lter where it is relatively
exterior of the) ?ltering element‘ although‘ some
remote from said bottom or sump portion of the'
?lter.
of it also falls to the bottom of the bowl and
'
Other objects of the invention are to provide -
.a device of this character that is reliable and
sturdy, that is simple in‘ construction and oper
ation, and that readily lends itself to inexpensive
manufacture. in large quantities by automatic
machinery.
'
tion will become apparent from the following de-
scriptlon taken in connection with theaccome
panying drawing, in which:
' ’
'5
The present valve, indicated generally at 24, is
of substantially the same outside diameter as the
?lter element 22 and is interposed between said
element and the ?lter head II! where the least
40 amount of dirt will pass through the valve when
it is open as it, is remotely positioned relative to. ‘
Further objects and advantages of the inven
-
accumulates there.
_ r
the bottom of the bowl l6. where dirt and other
sediment collects. The valve is tightly secured
in the above described position by the usual screw
Figure 1 is a vertical section through a ?lter 45 .25 used to attach said element to ‘the ?lter head.
The valve 24 comprises an annular or cylindrical
body 26 having two groups of ?uid passages 28
Figure 2 is an enlarged plan view of a preferred
therein, which are disposedion opposite sides of
embodiment of the present valve per se;
the body and between which is a hinge plate 30,
Figure 3 is a view taken on line 3-3 of Figure .‘Z;v
‘Figure 4 is a plan view of the hinge plateof 50 Figures 2, 3, and 4, secured to the inside of said
embodying the present invention;
the device; and
'
,
Figure 5 shows a modi?cation of the present .
., invention.
While several preferred embodiments of the in
body by rivets 32. Each end of said hinge. plate
30 is notched, as indicated at 34, and is provided ,
with an upturned ear 38 extending transversely
of the plate. The groups or sets of passages 28 ‘
vention are shown in the accompanying drawing 55 are normally closed by respective arcuate valve
2,412,232
i
a
1
,
4
v
v
members 3'! conforming to the curvature of the
the spirit and scope of the invention or sacri
body and having portions 31a of substantially the
same width as‘the length of the body and ends
?cing its material advantages.
,
I claim:
>
' ‘
'
a
.
_
1. In a valve for ?uid ?lters, a cylindrical body,
tive notches 34 and abut against respective ears 5 ' two groups of ?uid passages in said body disposed
on opposite sides thereof; a hinge plate secured
186, the latter being so formed as to be inclined
to the interior of the body between the groups, '- ’ somewhat over the adjacent ends of the respective
of ?uid passages, said plate having a notch in ‘
valve members ends to prevent same from be
each end-thereof, ‘an upturned ear along the
coming accidentally disengaged from the notches
34. The free end of each valve member is turned 10 closed "end of each notch and extending trans- '
versely of the plate, an arcuate valve memberfor
inwardly, at 40 and when said members are
each group of passages adapted to ?t against the , '
assembled in the body 26 as shown in Figures
2 and 3 said ends arevin spaced parallel rela-. , interior wall of the body, each of said valve meme‘
38 of reduced width which are received in respec
i bers having an end received in a respective notch
tionship to each other with a spring 42 disposed
,therebetween. The spring 42 is retained in posi- - 15 and pivoting against the ear thereof, the latter
being inclined over said end of the valve mem
tion by screws .44 and is adapted to yieldingly
‘urge the valve members into tight contact with - ber,_,and yielding means urging the valve mem
the interior of the body 26 thereby normally clos-_' bers into close contact with the interior wall of .
the body.
ing the passages 28.
.In standard ?lters of well known type having
20
_ an edge type ?lter element the ?uid enters the
.
.
2. The invention de?ned by claim 1 wherein
the free ends of the valve members include-a
?anged portion between which'said yielding means
is adapted to react.
s. In a ?lter for ?uids: a ?lter head having ',
inlet [2 as indicated by the arrow therein, ?ows
into the bowl l6, thence into the ?lter element
‘ 22 from the periphery thereof and through verti
. inlet and outlet passages therein, a substantially
cal ?uid passages 21 in said element which dis
cylindrical ?lter ‘element interposed between said
passages and removably attached to the ?lter
charge into a chamber 48 having a connection
with the outlet I4. When the ?lter element is
head in a manner such that ?uid to be ?ltered ‘
. clean the pressures inside and outside the valve
body 24 are substantially equal, the inside pres;
‘sure being somewhat less than the outside pres- .
sure as a result of the pressure drop through the
is caused to pass ‘through said element to the
voutlet passage, mean's providing a by-Pass for the
?uid to be ?ltered in the event the ?lter element
- becomes clogged comprising a substantially cy
?lter element but the pressure difference being
lindrical plain tube-like body open at both ends.
insumcient‘ to move the valve plates 31 against
and
of substantially the same outside diameter
tlge force of spring 42.
awith use the gradual accumulation ofdirt and 35 as that of the ?lterelement, said body being se
cured between the ?lter head and the ?lter ele
‘other foreign matter on the ?lter element so
ment and having a ?uid passagelin the cylindri- ,
pings 0r clogs the ?ltering passages of the lat—,
cal wall thereof which when open permits ?uid
ter that in time little or no ?uid will pass through
vto ?ow direct from the inlet to the outlet passage.
a hinged valve member normally closing the-?uid
passage in said tube-like body, and means yield
ingly urging'said hinged valve member to closed
said element. The pressure of the lubricant in
, the bowl will build up under such conditions and
force the valve members 31 inwardly thereby per
mitting the ?uid to enter the chamber 28 and pass
on to .the outlet l4 thereby insuring the passage
position.
therein; a cylindricalv edge type ?lter element
interposed between said passages and- removably
attached‘ to the head; a removable valve inter
posed between the ?lter element andv head, and
Referring to the embodiment shown in Figure
:5 the modi?ed device includes the annular body
26 within which is disposed a resilient valve
. ‘member 50 which conforms to the interior curva- '
secured to the latter by said element, said valve
comprising acylindrical body; two groups of ?uid.
ture thereof. The member 50 is secured to the
‘body 26 by rivets 32 located intermediate the free
ends thereof, which normally close the respective
groups of passages 28 and are spaced apart suf
?ciently to insure their free movement.
'
>
' ‘Should’ the ?lter element 22 become clogged
the pressure of the ?uid in bowl l6,‘ transmitted .
through the passages 28, will cause the free ends
of the member 511 to be forced inwardly and per
mit ?uid to by-pass said ‘?lter element.
Should the direction of ?uid ?ow through the
‘?lter be ‘the reverse from that described above,
the vmember-'50 may be attached to the outside
.of- the body 26 to permit the ?ow. of ?uid from
"the interior to. the exterior of said body 26.
Itis to be noted that while the invention ,is
shown and described in connection with ?lters
. using edge type ?lter elements for ?ltering lubri
‘ cants said invention may be used in connection
with ?lters using other types of ?lter elements
and ?ltering other types of ?uids and 'from the
passages in said body disposed on substantially‘
opposite sides thereof; a hinged platesecured to
the interior of the body between the groups of
?uid passages, said plate. having a notch in each
end thereof; an upturned ear at the closed end
of each- notch and extending transversely of the
plate; 'an' arcuate valve member for each group _.
of passages adapted to seat against the interior
wall of 'a body, each of said valve members hav
60 ing an end received in a respective notch and
pivoting against the ear thereof, the latter being
inclined over said end of the valve member; and > -
yielding means- urging the valve members‘ into
' close contact with the interior wall-of thebody.v
5. vIn-a ?lter'for ?uids: a ?lter head having
inlet and outlet‘ passages therein;.a ?lter. ‘ele
' ment; a stem extending from one end of said
element, and being so constructed and arranged
as to threadably secure the element to the head;
a tubular valve body open ‘at the ends and having .
foregoing it is thought that the invention and
many of its attendant advantages will bejunder
- being disposed‘ about the stem and‘clamped be- ‘I
stood and it will be apparent that various changes
tween the ?lter element and the ?lter head; and
. means yieldingly closing the port in‘ the valve‘
may be made in the form, construction and ar
-
'
4. In a ?lter: ‘a head havingv?uid passages '
. of an emergency supply of ?uid through the ?lter.
a port in the tubular wall thereof, said valve body
rangement of the parts without departing from 75 body.
2,412,282
5
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6
;
let passages for the ?uid to be ?ltered, a. substan
tially cylindrical ?lter element, a stem so con
' inlet and outlet passages therein; a ?lter ele
structed and arrangedv as to removably secure
ment; means extending from one end of said
the ?lter element to the ?lter head between said
element and being so constructed and arranged
as to secure the element to the head; a tubular Cl passages and ‘in spaced relation to-said head; and
a valve for by-passing ?uid around the ?lter ele
valve body open at the ends and having a port
ment in the event‘ the latter becomes clogged,“
in the tubular yvall thereof, said valve body bee
said valve comprising a plain tube open at both
ing disposed about the ?rst mentioned means and
ends and disposed, about said stem between the
clamped between the ?lter element and ‘the ?lter ,
head; and a closurev adapted to normally close‘ 10 ?lter and said head and providing a cylindrical
6. In a ?lter for ?uids: a ?lter head having
said port.
_
wall normally barring the passage 01' ?uid be
,
7. In a ?lter for ?uids: a ?lter head having
inlet and outlet passages therein; a ?lter ele-‘
a tween the ?lt‘er-v element and that portion of the
?lter head which lies between said passages, said
tube having a ?uid passage in the wall thereof
ment and being so constructed and arranged as to 15 which when open permits ?uid to by-pass the L
detachably secure the element to the head; av
?lter element, and a resilient valve member se
cured to the interior of said tube and having at
tubular valvebody open atthe ends and having
free end portion normally ‘closing the passage
a port in the'tubular wall thereof, said valve
ment; a stem extending from one end of said ele
body being disposed about the stem and being
clamped between the ?lter element and the head;
in said tube.
,
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‘
cylindrical edge-type ?lter element interposed -~
between said passages, a' stem attached to the
head and supporting the ?lter element, means
end of said valve member is adapted to normally
-8. In a ?lter for ?uids: a ?lter head having
inlet and outlet passages therein; a ?lter ele
ment; a stem extending from one end of said
.
inlet and outlet passages therein, a substantially
a resilient valve member conforming to the shape
of the body and means for attaching a portion
of the valve member to the body whereby‘a free
close the port.
'
, 10. In'a ?lter for ?uids: a ?lter head having
25 providing a, con?ned space around the ?lter ele
ment in communication with the inlet passage,
?uid to be ?ltered ?owing into said space "tom
- the inlet passage and thence through said ele
ment to the outlet passage, and means providing
as to threadably secure the element to the 'head; 30 a by-pass for the ?uid to be ?ltered in the event
the ?lter element becomes clogged comprising a
a tubular valve body open at the ends and hav—‘
' tubedisposed about said stem between the ‘ilter
ing a plurality of spaced ports in the tubular wall
element and said head, said tube having a port in
thereof, said valve body being disposed about the
the wall thereof which when open permits ?uid to
stem in spaced relation thereto and being clamped
between the ?lter element and the ?lter head; a 35 ?ow from said inlet through said port direct to
said outlet, a plate mounted ‘in said tube, an
resilient valve member conforming to the shape
of the body; and means for attaching an inter
arcuate valve member pivotally attached to said
plate and normally closing said port, and means '
mediate portion of the valve member to the valve
element and ‘being vso constructed and arranged
yieldingly urging said valve member towards port
body intermediate the ports whereby the free ends
of said member normally close said ports.
9. In a ?lter for ?uids: a hollow ?lter bowl
A provided with a ?lter head having inletand out
40
closing position.
‘
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‘
‘B. G. SUTTON.
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