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Патент USA US2132770

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@ct. 11, 1938.
''R. A. wEnjENBAcKER
2,132,770 ~
Filed Dec. 31, 1935
-‘ Patented Oct. 11, 1938.
Russell A. Weidenbacker, iilaveri'ord, Pa.
' Application‘ December 31, 1935, Serial No. 56,917 _
This invention relates to oil ?lters and is par
ticularly designed to provide a very rugged type
of ?ltering means of an improved construction for
?ltering oil used in lubricating internal combus—
?ltering means only of Fig. 2, the section being
taken on the line 3-4 and shows the present
invention as it appears when removed from the
Fig. 4 is a plan view of Fig. 3.
5 tion engines or wherever a sturdy ?lter is re
Fig. 5 is a fragmentary vertical sectional view
quired which will not readily get out of order.
and which will function continuously for long through Fig. 4 on the line 5-5 showing the rotor
periods oi time without adjustment or attention construction only.
v Fig. 6 is an enlarged fragmentary detailed view
other than an occasional draining of the sedi
showing the construction of the upper and lower
10 ment chamber in the bottom of the ?lter.
Another object of the invention is to provide ends of the rollers.
Similar numbers refer to similar parts through- _
an oil ?ltering means which will permit a con
tinuous flow of oil through the ?lter, the con
struction of the ?ltering means being such that
out the several views.
The base i, the drum 2, top v3, turbine 4, inlet
15‘ if a greater volume of oil is forced into the ?lter ' pipe 5 and associated parts constitute parts of
than the capacity of the ?ltering means can the ?lter cooperating with the present invention
.' ?lter, it will nevertheless ?ow through the ?lter
and while not parts of. the present invention,
and be cleaned in proportion to the volume ca- . these and their associated parts function with
. pable of being taken care of by the ?ltering‘
20 parts.
the present invention in exactly the same man
ner as they function with the ?ltering means illus
An additional object more speci?cally is to trated in my application previously referred to.
Referring. to Fig. 1 the ?lter is bolted to an
provide a ?ltering means having a plurality of
equal length round wires, quills or rollers mi ' engine or other device so that oil may be forced
nutely separated for ?ltering the oil and arranged
vertically in cylindrical form around coacting
through the passageway l into the ?lter and
hollow rotor vanes extending from and in com
through the passageway 8 from the filter.. 011
enteringthrough passageway 'I ?ows into cham
munication with a centrally located outlet pipe.
An additional object is to provide a ?ltering
ber 8 and into contact with a turbine 4 arranged
in a communicating chamber, rotates tube 9
means having features and details which will
and emerges into. chamber i0 and then passes
30 appear from the speci?cation and claims, so
up pipe 5 over?owing and ?lling the interior oi’
constructed that it can be used in a ?lter wherein
the construction is such that the ?ow of the oil
through ‘the ?lter acts as a power member for
causing certain parts cooperating with the ?l
tering element of the present invention to ‘func
tlon during the ?ltering operation. Such a ?lter
is shown iii-my application Serial Number 33,38ii
?led July 2d, 1985.
An additional object of the invention is to pro
vide a construction of the present invention,
which will interchange with the ?ltering means
shown in the illustration of the ?lter of said
application with the result that one type of ?l
teringmeans may be substituted for the other
45 type within the same ?lter.
A preferred embodiment of the invention show
ing the mechanism by which ll attain these ob
jects is illustrated in the accompanying drawing
in which—-
Fig. l is a vertical sectional view through a
?lter disclosing an embodiment oi the invention,
the section being taken on line 8-5 oi’ Fig. 2.
Fig. 2 is a transverse sectional view through
Fig. l on the line 2-»2.
Fig. 3 is a vertical sectional view through the
drum 2, passing radially inward through the
element of the ?ltering means hereinafter de
scribed and flows down outlet pipe 9 through
passageway s to the point of utilization. The
oil pump will maintain this how of oil through
the ?lter and although the pressure of the pump
may vary widely the ?lter element is designed
to withstand high pressure without damage.
The base i is provided with a sludge chamber
ii so that grit, dirt and other foreign‘ substances *
in'the oil within the drum and surrounding the '
?lter element will either remain in" suspension
or fall by‘ gravity into the sludge chamber ii.
The finerparticles oi grit and the like usually
remain in suspension while the ?lter is in opera~ _
tion but when the circulation of oil stops this
grit and the like will gradually fall by gravity
into the sludge chamber ii from which it may
readily he withdrawn ‘icy unscrewing the plug 33.
It will be noted that plates i2 and iii are pro
vided in the form of spiders the central portions
‘being solid while the outer parts of each are
formed with three arms. The outer edges of the
arms 23 centralize the ?lter element in the bore
of drum 2 and the arms of the lower plate it
rest upon the ?ange 2| of the base I. Each of
the plates l2 and I3 have a low cylindrical out
lying wall It extending in one case upward from
plate I2 and in the other case downward from
plate l3. These walls are formed concentric with
the bores .of‘ their tubular extensions l5 and I5.
While I have illustrated these outlying walls I4
as being of integral construction with the plates
l2 and I3 to minimize cost, they may be attached
as separate pieces without departing from the
spirit of the invention. Arranged between the
plates l2 and I3 tangent to walls I‘ at their ends
and in contact with one another at said ends and
completely encircling the walls l4 are slender
rollers or bars l1 circular in section. As illus
trated in Fig. 6 the rollers have short bands of
contact at their upper and lower ends leaving
spaces l8 between the rollers intermediate said
end‘ bands, but similar intermediate contacting
bands on the rollers may be used without depart
ing from the spirit of the invention. The spaces
l8 between the rollers are very small permitting
oil to pass radially inward between the ‘spaces
but holding backdirt, grit and the like and said
roller assembly shouldered bolts or studs .39 so
that the length of the rollers and the distance
between shoulders on the bolts or studs may be
‘adjusted to allow clearance for ?oating the rollers
or for ‘clamping them endwise as desired. When
it is desired to allow the rollers to ?oat or move
around, the lengths of the bolts between shoul
ders are made slightly greater than the overall
lengths of the rollers, but if a ?xed or clamped -
arrangement of the rollers is ‘preferred the shoul
dered bolts are made the same. length or slightly
less than the length of the rollers so that when
the nuts 22 are tightened the rollers will be un
able to move as they will be clamped endwise
between plates l2 and I3. Also very thin shims 15
may be inserted at the endsof the shouldered
bolts between ‘said shoulders and the faces of
plates l2 .and I3 for obtaining the necessary
clearances to ?oat the rollers, then the lengths of
the rollers and the distances between shoulders 20
on the bolts may be made the same. The advan
tage in ?oating the rollers and thereby permit
ting axial rotation, occurs, when ‘the very small
est limits of separations of the rollers are used, I
.as this movement provides further assistance to
the internal rotary vanes in sweeping any lodg
ings of foreign matter from between the sepa
ward to_ a ten thousandths of an inch depend
ing upon the degree of ?ltration desired. The rations, as it is impossible for the separations to
spaces between the rollers are preferably formed clog with foreign particles from without with this
by grinding or undercutting the diameters of the motion present. ‘
Extending vertically between but not touching
rollers for their full circumference, at the points
between the bands of contact, to such diameters the inner horizontal faces of the cylindrical walls
I4 are vanes 25 extending from each side of a
as will produce the desired separations between
4 them. This procedure furnishes a‘ very accurate central oil outlet tube or pipe 9, rotatably ar
. method of controlling the amount of separation ranged in the tubular extensions l5 and I6 of end
between the rollers intermediate said bands of plates I3 and I2..‘ These vanes are hollow, their
interiors being in communication with the interior
contact. Also any other method which will ac
curately separate the rollers will be satisfactory. of the tube 9 forming an outlet for the oil-which
The exactness with which the rollers are held in has passed through the separations between the
40 contact with one another without binding isv rollers into the‘interior of the roller element as
sembly and then ?ows under pressure thru the
maintained at all times by accurately sized re
taining rings l9, which are placed over the ends vanes into the tube 9 and down to outlet‘i and
of the roller assembly, holding the rollers at the the point of utilization. The edges of the vanes
25 while they are in close‘communication with
same time .in contact with the outer circum
ference of the walls 14 and in turn the rings l9 the inner surface of the bars I‘! they do not touch
are held in position against the upper and lower at any point. The bushing 38 acts as a bearing
for rotatably mounting the lower end of the tube
plates l3 and. I_2‘by thin discs 20 having exten
sions arranged to fit overshouldered bolts 38 9 and‘centers in the tubular extension l5 of plate
whose threaded ends carry nuts 22 which when l2 while the ‘bushing 21 forms a bearing for ro
tightened hold the roller assembly together. tatably mounting the upper end of tube 9, said
bearing being centrally located in an extension
The discs 20 are held in position by spring lock
ing rings 24 sprung into grooves provided at the of the valve casing 28 which in turn centers in the
tubular‘ extension I5 of the upper plate i3 and-is
ends of bolts 39.
A very desirable method of constructing the carried by a ?ange 29 which rests upon the upper
end of the tubular extension IS. The oil outlet
?lter element is to grind all rollers to exact diam
eters andv length with'thei'r ends ground square pipe 9 and its communicating extensions 25 have
with their axis, the inner bores of rings l9 ground‘ been constructed in the manner illustrated to
to ?t the outer diameter of the roller‘ assembly minimize costs and consists of two rectangular
without binding, said bores formed at exact right plates passing through aligned slots in the ‘walls
angles to their horizontal faces, the outer surface , of the tube 9 and welded or otherwise attached
‘of rings‘ l4 ground to exact right angles to the -'to their respective sides of the tube thereby ef
ground faces of the end plates l2 and I3 where fecting a space between them, opening into the
they contact the ends of the rollers, said outer tube 9 at the top and bottom at the points where
surface of rings l4 ?tting the inner diameter of they pass through the tube. The top and bottom
the roller assembly, said inner diameter being 4 openings between the portions of the plates which
as that
formed when all the rollers are in contact extend outward from each side of the tube are
closed by circular discs 28 ?tting over the tube
. with one another at their ends. All ground parts
9 and welded or otherwise made fast and oil tight
are hardened and polished.
to the edges of the vanes and the outer surface of
This method of construction insures an exact
70 ness of ?ts which makes itpossible to‘ ?oat the the tube. The discs 26 are useful in assembling,
rollers l'l endwise or clamp them ‘endwise, but serving as a support for ‘the rollers. The number
in either case the ?ts being close there will bev of vanes extending from the tube may be varied
no oil seepage over the ends of the rollers. ~In without departing from the spirit of the inven
carrying out this feature‘ ofthe invention I have tion, also a cast or otherwise fabricated construc
_ 7‘ provided in'the arrangement for clamping the tion; of the vanes and tube will be'i‘satisfactory.
spaces may range from a separation between
rollers of a few thousandths of an inch down
The an outlet tube is extended beyond the bear
free of the separations between the bars or rollers
ing or sleeve 38 a short distance and on this
of the ?lter element during its operation, set
tling out by gravity when all motion ‘ceases,
length a short spline ?ttingv 31 is out which en
.gages a similar spline ?tting-cut in the bore of
turbine 4 forming a rigid driving connection when
engaged but one which may be readily discon
The valve casing 28 which is arranged for ro
tatably mounting the oil outlet pipe 9 has a spring
10 38 arranged in its upper section which presses
upward against a ball valve 3| covering an open—
ing 32. By varying the tension of the spring 30
there will be a greater or less resistance to the
downward ‘movement of the ball valve 3|. For
16 instance if the volume of oil passing through the
only the ?ner panicles remain in suspension dur
ing the operation of the ?lter and, after the oil
pump is stopped and then restarted there is, no
tending to stir up the sediment at the bottom of
the ?lter as all motion is well above this area and
this action is further prevented by having the
boil inlet at the top of the?lter. '
;In constructing the rollers, wires or quills oi’
‘the ?lter element any desired material may .be
used which ‘will resist or can be treated to re
sist the effects upon it of oil and abrasion and.
the rollers may be hollow or solid in cross section. 15
?lter is within the capacity of the ?lter the pres
I claim:
sure will not be su?icient ‘to unseat the valve
1. In an oil ?lter, a ?ltering element compris
and all of the oil will be compelled to pass through
the ?ltering element but if for any reason the
20 pressure of the oil should rise above the pressure.
for which the valve is set the ball will move
inward away from its seat and allow the oil to
?ow, directly into the tube 9 whereby it will be
ing an arrangement of rollers disposed in cylin
drical formation and registering in end plates
for holding said. rollers in functioning position 20
whereby in?nitesimal spaces Will be presented
between the rollers, means for cleaning the ?lter
comprising a rotating central tube within said
impossible to damage the ?lter from excessive _ cylindrical formation, aligned slots longitudinally
arranged in the central tube, parallel, spaced, ..25
bladed members secured in the slots and extend
After the parts have been assembled as illus
trated in Fig. 3 the entire assembly is placed in ing outwardly adjacent the rollers and upwardly
' a ?lter of the type illustrated in Fig. 1 with the and downwardly adjacent the end plates, said
splined end of pipe Sengaging the splined hole bladed members providing "a passage therebe- pressure.
tween through.which the ?ltered oil may ?ow
radially inward into the tube and then downward
to the discharge point, means for ‘centering the
tube at each end in the-end plates, driving
placed over the top portion of the valve casing means attached to the tube for producing rota
28 with one end bearing against the ?ange 29,, tion of the tube and attached bladed members, 35
and the opposite end pressing against the in~ thereby swirling the column of ?ltrate and set
side of top 3, which is screwed in place, holding ting in rotation the rollers to dislodge obstruc
the ?ltering means ?rmly against‘the ?ange 2! tions, and means comprising an inwardly open
ing spring pressed valve sealing and communi-//
of base I and the ?lter is then ready for opera~
- eating with the upper end of the outlet tube and 40
tate the tube 9 and its attached-vanes 25, ?ow acting so as to relieve excessive oil pressure from
into the bore of drum 2 which it will quickly ?ll without.
2. An oil ?lter as speci?ed in claim 1 provided
and then the continuous ?ow of oil will cause
some of the oil to pass radially inward through with bars connecting said end-plates for main
the separations between the rollers, as at l8 Fig. 6, taining same in functioning-relationship at all 45
45 comprising the ?lter element, enter through the openings 36 Fig. 5 in the vertical edges of the
3. The combination, in an ‘oil ?lter, of a plu—,
vanes 25 and ?ow into the central tube 9 out rality of rollers having minute interspaces, with
of the turbine 4 and the sleeve 38 centering in
the bore of the tubular boss 35 in the base: cast
ing l and with the lower face of plate l2 coming
to rest on the circular ledge 2!. A spring 33 is
through the openings at the top and bottom of 'end plates having spaced, concentric, annular
the vanes within the tube and then downward to
50 the point of distribution. The vanes as they
' rotate set in motion the inner column of ?ltered
ribs for retaining said rollers in functioning rela
tionship, at all times, one of said ribs on each
plate being‘integral with said plate the other of ‘
oil causing a creeping action of the rollers', if they
said‘ ribs being removable and clamped thereon,
are not clamped, around the inner ?xed race
ways and in turn are themselves" rotated about
and locking means therefore secured by rings
lodged in grooves provided in bars connecting 55
their own axis.
The sweeping action of the
said end plates.
4. The combination in an oil ?lter of a plu
vanes 25 forces some of the oil back through the
separations I8 and this action augmented from
rality of rollers having precise interspaces, with
time to time by a violent reverse pressure dis
end plates having spaced annular ribs for retain- ‘ ‘
charge of oil through the jet like edges of the
ing the ends of the rollers therebetween in func
tioning relationship and movable therein at all
60 vanes occurring with the unseating of the ball
valve 3| sprays the separations between the rollers
from within continuously as in rotating the ver
tical edges of the vanes pass over one separation
‘to the other. The combined e?fect of this action
is to cause all_foreign matter tostay entirely
times so as to dislodge obstructions and con
necting rods between the end plates, shouldered
for spacing said plates apart and means thereon
provided for locking said plates in position. b
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