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Патент USA US2411341

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Nov. 19, 1946.
‘
F. B. SHEPARD
FILTERING APPARATUS
Filed April 12, 1945
2,411,341
4 Sheets-Sheet 1
NOV- 19, 1946-
F. B. SHEPARD
2,411,341
FILTERING APPARATUS
Filed April 12, 1945
4 Sheets~Sheet 2
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Nov. 19, 1946.
2,411,341
F. B. SHEPARD
FILTERING APPARATUS
Filed A?Eil 12, - 1943
4 Sheets-Sheet 3
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F72 epca'ri
Patented Nov. 19, 1946
2,411,341
“
' UNITED STATES PATENT OFFICE,
2,411,341
FILTEBING APPARATUS
Frank B. Shepard, Texon, Tex.
Application April 12, 1943, Serial No. 482,748
3 Claims, (Cl. 210-150)
1
This invention relates to a ?ltering apparatus,
and it is primarily the purpose of the invention
to provide an apparatus of this kind for purify
ing lubricating oils used in the different types
> of internal combustion engines although it can
be employed with equal advantage in the reclaim
ing of‘ lubricating and cutting oils used for all
purposes.
The invention also has for an object to provide
an‘ apparatus of this kind including ?ltering
media of different kinds as, for example, a waste
pack and fuller’s-earth units to assure the re
2
Figure 4 is a fragmentary sectional view taken
substantially on the line 4-—4 of Figure 2.
Figure 5 is a sectional view taken substantially
on the line 5—5 of Figure 2.
Figure 6 is a detailed sectional view taken sub
stantially on the line 6-—6 of Figure 2.
Figure 7 is a detailed sectional view taken sub
stantially on the line 1--1 of Figure 5.
Figure 8 is a fragmentary sectional view taken
10 substantially on the line 8-8 of Figure 2.
Figure 9 is a view in side elevation of a ?lter
ing element constructed in accordance with an
other embodiment of the invention, and
claimed oil being substantially clear of all heavy
Figure 10 is an enlarged sectional view taken
matter, such as iron oxide, carbon, dust, practi
substantially on the line |ll-—l0 of Figure 9.
15
cally all abrasive matter, water, etc., and restored
As disclosed in the accompanying drawings,
to practically its original state of utility.
M denotes a main pressure tank of desired di
It is also an object of the invention to provide
mensions and having itsiupper or top end open,
a ?ltering apparatus employing ?ltering units
with said top end de?ned by an outstanding
of different characters and wherein each of said
20 ?ange I. At diametrically opposed points and
units can be readily and conveniently replaced.
closely adjacent to its top open end, the tank
A still further object of the invention is to pro
M has suitably secured to the inner faces there
vide an apparatus of this kind including the use
of the opposed plates 2 welded or otherwise se
of two different characters of ?ltering units, one
curely held in applied position.‘ Each of these
of which is a fuller’s-earth unit and the other
plates is provided in its upper portion with an
25
of a character to materially relieve the fuller’s
upwardly
facing notch or recess 3 in which is
earth unit of its burden and thereby materially
received from above an end portion of a support
prolong the useful life of the fuller’s-earth unit.
ing bar 4 which extends radially across the upper
.' The invention also comprises as an object to
portion of the tank M.
provide an apparatus of this kind including a
At substantially the axial center of the tank
screen element comprised in the fuller’s-earth 30 M, the bar 4 has rigidly secured thereto from
?ltering unit constructed and assembled in a
below an elbow 5, one leg a of which extends
manner whereby the resistance to ?ow is equal
ized practically throughout the entire surface,
whereby the unit will possess capacity sufficient
downwardly and the second and upper leg b of
which extends laterally. The upper or lateral
to handle a reasonably large flow of ?uid and 35 leg I) of the elbow 5 has coupled thereto, as at 6,
an end portion of a pipe 1 which extends out
will so equalize the pressure to prevent channel
wardly of the tank M through a side wall 8 ‘there
ing of the fluid in the fuller’s-earth.
of for a purpose to be hereinafter more particu
The invention consists in the details of con
larly referred to.
struction and in the combination and arrange
ment of the several parts of my improved ?lter 40 The depending leg at of the elbow 5 has cou
pled thereto the upper end portion of a pipe 9
ing apparatus whereby certain advantages are
of material length and which has the lower por
attained, as will be hereinafter more fully set
tion of its wall at spaced points therearound and
forth.
,
lengthwise thereof provided with the elongated
In order that my invention may be better
and longitudinally disposed perforations or slots
45
understood, I will now proceed to describe the
l0.
'
same with reference to the accompanying draw
Surrounding this pipe 9 at a point above but
ings, wherein:
closely adjacent to the lower slotted portion
Figure 1 is a view in elevation and of a some
thereof and rigidly secured thereto is an out
what diagrammatic character illustrating a ?l
standing member or washer ll against which
tering apparatus constructed in accordance with 50 abuts or contacts from below the uppermost of
an embodiment of the invention.
'
the annular screening elements or parts l2 snug
Figure 2 is an enlarged vertical sectional view
ly surrounding the lower or perforated portion
taken through the device as illustrated in Figure
of the pipe 9.
1, with parts in elevation.
elements or members [2 are of a num
Figure 3 is an enlarged vertical sectional view, 55 berThese
to
extend
from the member or washer H to
with parts in elevation, taken through the ?lter
a point closely adjacent to the lower end of the
ing case as herein comprised.
2,411,341
pipe 9 and adjacent elements or members l2 are
held in close contact one with the other by a
blind nut l4 threading upon the lower portion
of the pipe 9 below the applied elements or mem
bers I2 and having contact from below with the
lowermost of such elements or members [2.
The under surface of each of these elements or
4
provide minute openings, su?icient capacity is af
forded to handle a large ?ow of ?uid spread out
over a comparatively large area in order to equal
ize the pressure. This assembly embodying the.
screening elements or members 12 assures equal
pressure through the ?ller F to prevent channel
ing of the ?uid in such filler and at the same time
assures the screening out of all minute abrasive
particles of the ?ller F. The applied sack or sock
members I2 is provided thereacross at points
spaced equidistantly therearound with the radi
ally disposed and shallow grooves or channels I5 10 .56 also serves as a further screening medium.
through which the ?uid, such as oil to be re;
Overlying the upper open top of the main tank
claimed, may readily seep or flow into the lower
MM is a second pressure tank T. The lower end
portion of the pipe 9 through the openings in
of this tank T is closed by a bottom 29 and the
thereof.
'
lower end of this tank T is de?ned by the out
Substantially tightly disposed over the applied
elements or members [2 and blind nut I4 is a
fabric sack or sock It. This sack or sock I6 is
applied from below and has its upper- end portion
surrounding the member or washer H and held
thereto by a tie wire I‘! or other ?exible strand.
To facilitate this securement of the sack or sock
[6, the periphery of the member or washer H is
provided circumferentially therearound with the
groove or channel '18 into which the adjacent por—
tion of the sack or sock is compressed under the
action of the tie wire 11.
‘
‘The pipe 9 extends downwardly at substantially
the axial center ‘of a cylindrical cage or basket C,
the wall 59 of ‘which, at points circumferentially
therearound and at points spaced lengthwise
standing surrounding ?ange 3B which rests upon
the ?ange l of the main tank M. These ?anges
3i} and l are bolted, as at 3|, or otherwise detach
ably connected, so that the upper pressure tank T
may be readily applied or removed as desired.
The top of the tank T is also open and said top
or open end is de?ned by an outstanding sur
rounding ?ange 32 upon which rests the periph
eral portion of the cover plate 33 for this tank T .
and which plate 33, as herein disclosed, is bolted,
25 as vat 3.4, or otherwise detachably connected to the
?ange 32. The upper portion of the tank T and
at .a point closely adjacent to the top thereof has
in communication therewith, through the side
Wall 35 of the tank T, an inlet pipe 36 leading
30 from the source of supply of .oil or other ?uid to
thereof, is provided ‘with the elongated slots or
be reclaimed or puri?ed.
perforations 20.
This pipe 9 is of a le“ gth to po
sition the lower portion thereof su.-ounded by
the elements or members H2 at substantially'the
center-of ‘the cage or basket C.
The‘bottom 2i of the cage is also provided with
Interposed in this pipe '36 is a spring-loaded
adjustable vby-pass valve 310i any preferred type
for the purpose of maintaining desired pressure
and also to serve as a safety. Depending from
the cover plate 3.3 at the axial center thereof is a
pipe 38 of alength to terminate above but in rela
tively close proximity tothe bottom'29 of the tank
T. The lower major portion of this pipe 38 is
the perforations '22 and depending from the
peripheral ‘portion-of this bottom 2! are the equi
distantly and circumferentially spaced legs 23
which rest directly upon the bottom 24 of the 40 provided at points therearound and lengthwise
main tank M whereby the bottom 2| of the cage
thereof withthe elongated perforations or slots 39
or'basket C isspaced as desired above the bottom
24 ofthe‘tank M.
_
The cage or basket C is of a diameter less than
the interior diameter of the ‘tankM so that when
the cage or ‘basket '0 is ‘in applied position Within
the tankM, said cage or basket C is surrounded
by a space 2.5. The top or'upper end of the cage
or basket 10 *is "open, so that the desired?ller F
of'fuller’s-earth maybe readily placed within or
removed ‘from the cage or basket 0.
As illus
trated in the accompanying drawings, this ?ller
F is'contained within a fabricsack 26 of desired
and surrounding such perforated portion of the
pipe 38am the'screening elements or members 40,
Withladjacent elements or members in close con
tact one with the other and with the uppermost
element or member 40 having direct contact with
a surrounding member or shoulder 4| ?xedly car
ried iby theupper portion of the pipe 38.
The lower end portion of the pipe ‘38 ‘has
threaded thereon a blind nut 42 which operates
to hold the elements or members 49 in desired
assembly upon the ‘pipe 33 and also for clamping
the lower portion of the pipe 38 to the bottom
capacity, so that the. ?ller F, in fact,>constitutes a
unit ‘or'cartridge which can ~be-quickly. applied or
removed. After application of the cartridge, the
drical waste cage or basket B. The side wall 44
upper open or mouth end of the sack 26 is closed
in a manner to snugly surround the adjacent up
therearound and'at-points spaced between the
top-and bottom thereof with‘ the elongated per
per-portion of the pipe-9.
or lower perforated lid or cover 43 for the cylin
of thiscontainer-is also provided atspaced points
forationsvorlslots 'tdwhile the upper end of the
' The upper open end of the cage or basket C‘, 60 cage or basket Bis closedby the perforated top
‘at, points ‘spaced circumferentiallytherearound,
lid or cover 46.
isprovided with the .upstanding straps, each of
WhiCh'iS provided in ‘its upper portion with an
opening 28. These straps 38 provide means
wherebyitheicage'or basket'C may be readily han
dled 'for placement vwithin the main basket M
This cage or basket B is tightly packed with a
wastev?ller ‘W and the cage or basket .13 is of a
diameter less than the interior diameterof the
tank T so that a space 41 surrounds the applied
cageor basket'IB. It isralso to be noted that this
cage or basket ~B,ewhen applied, has its'bottom
cover~43 spaced fromthe-bottom 29 of the tank
.withithe straps.
T and has its topicovervorlid 4E5 spaced‘from the
‘Itjis to be pointed out that-the screening ele 70 cover-plate 33 of the tank T.
ments or members l2 provide a comparatively
‘Leading from and in communication-with the
large area in order to assure sufficient-screening
upper portion of the pipe ~‘38 is a-discharge pipe
or. removed therefrom.
The openings 28 make it
possible 'for‘lifting hooks to be effectively engaged
capacity with the resistance-t0 '??lw'practically
equalized throughout‘ the entire surface. By the
43,;11‘hi7s pipe 48~isabove¢thecover plate 3.3 and
radially‘ thereof- to. a-desiredpoint there
provision 'of ‘the grooves -or channels 4'5, ---which 75 extends
beyond. The outer --end1portion of ithisl pipe,,=.4.8
2,411,341
5
is continued by a depending pipe line 49 which
terminates at a point closely adjacent to the lower
end ofthe tank M. This lower end portion of
the pipe line 49 is in communication, as at 50,
with the lower portion of the tank M through the
‘side wall 8 thereof and also in communication, as
at 5i, with the upper portion of the tank M
through its side wall 8. ,
portion of a lower ?at perforated disk 15. In
the present embodiment of the invention, these
disks 15 are shown as two in number although,
of course, such number may be varied as the re
quirements of practice may prefer.
' ‘
'
, Each of these disks 15 has its entire under
area ?at and coplanar while the upper surface of
each of the disks 15 is recessed, as at 15, over a
major portion thereof to provide a shallow cham
ber. Superimposed on the upper disk 15 is a per
The‘pipe line 49 at a point above the connec
tion 5! has interposed therein a regulating or 10 forated disk 11 having both its top and bottom
surfaces ?at and coplanar, and bearing from
control valve 52 of desired type and in communi
above on the peripheral portion of this disk 11 is
cation with the pipe line 49 above or in advance
a holding or jamb nut 18 threading from above
of the valve 52 is a pipe line. 53 having interposed
down into the upper portion of the ?lter body 68.
therein a regulating or control valve 54 of any
type preferred. This pipe line 53 leads to and
is in communication with an outlet pipe 55 lead
Interposed between the lower disk 15 and the
spacing ring 14, between adjacent disks 15 and
ing from a ?ltering case A. This pipe line 55 in
advance of its connection with the pipe line 53,
or at a point between such connection and the
case A, has interposed therein a control or regu—
between the top disk 15 and the disk 11, are the
lating valve‘56. By closing the valves 52 and
56, with, of course, the valve 54 open, the oil or
other ?uid may be by-passed direct from the
upper tankT to the outlet pipe 55.
' The ?ltering case A, as herein disclosed, com
prises a base casting or member 5? provided at
its center with an axial opening 58 continued by
an outwardly and radially disposed inlet port 59
with which communicates the extremity of the
pipe ‘i, hereinbefore referred to. This port 59
is extended through an outwardly directed boss
5!! carried by the casting or base member 5? and
to which the outer extremity of the pipe 1 is suit
superimposed laminations 19 and 80, one consti
tuting a ?ltering cloth or paper 80 and the other a
?ne ‘mesh ‘supporting screen 19. These lamina
tions 19 and 80 are ‘effectively clamped in desired
position under the action of the jamb or holding
nutIt 18.
is to be noted that the base casting or mem
ber 51 is provided with a relatively wide annular
recess Bl to bleed ?uid below the over?owing
point when draining. The dome 64 at its high
point is provided with a tapped opening 82 to
provide an air bleeder.
‘
The main tank M has suitably ‘ supported
against its outer surface at a desired location an
elongated heating element 83 of a type preferred
and the location of this element 83 is where it will
give the best efficiency depending on the size
The outlet pipe 55, hereinbeiore referred to, is " and capacity of the tank M and the parts there
in. While, in the accompanying drawings, only
in communication with the ?ltering case A
a single heating element 83 is shown, it is be
through this base casting or member 51 through
lieved to be obvious that as many may be em
the medium, in the present embodiment of the
;ployed as practice may demand and it is also
invention, of an upstanding nipple 5i suitably
coupled to the outlet pipe 55 and threading from 40 believed to be obvious that such heating element
or elements are to be thermostatically controlled
below up within a suitably positioned opening 52
so that the same will be ineffective when the
disposed through the base casting or member 57.
temperature of the ?uid within the tank M is
‘ Resting from above on the marginal portion
of the base casting or member 51 is in outwardly . below a predetermined or desired degree.
It is believed to be apparent from the fore
disposed ?ange B3 de?ning the lower open mar
going that the invention as herein described is
ginal portion of a dome 64. This dome is effec
one which provides what may be termed a two
tively held in applied position by the cap screws
stage ?ltering apparatus for the purpose of ?l
65 disposed at desired points through the flange
tering lubricating oils and other liquids. The
63 and threading from above into the peripheral
?uid enters the upper tank T through the pipe 35
portion of the base casting or member 51.
and thence, under pressure, through the waste
The T coupling 66 which connects the pipe 55
?ller _W, between the screening elements or mem
and the nipple 8| has it lower end closed by a
bers 40 and out through the pipe 48 and pipe
removable plug 61 whereby, when desired, the
49, when the valve 52 is opened and the valve
nipple 61 can be employed as a drain or clean-out
54 closed, into the main tank T at 561 and 5|.
for the chamber within the applied dome 64.
The fluid within the main tank M then passes
Positioned Within the dome 54 substantially
under pressure through the ?ller F of fuller’s
centrally thereof is a cup-like ?lter body 58 and
earth and between the screening elements or
depending from the central portion of the bottom
members 12 and out through the pipes 9 and 1
69 of the ?lter body 68 is a tubular stem 1U
into the ?ltering case A. From the ?ltering
threading from above or otherwise effectively en‘
case A the fluid passes out through the pipe 55,
gaged within the opening 58, whereby the body
when the valve 56 is opened, to a desired point
member 68 is mounted and maintained in desired
position within the dome 64. The bore ‘H of the
of discharge.
In Figures 9 and 10 is illustrated a ?ltering
stem 10 is open at its lower end, whereby direct
element that can be substituted for the waste
communication’ is had with the inlet port, 59 while
ably coupled.
the opposite or upper end of the bore 1i opens
through the bottom 69 of the ?lter body 68 for
communication within said body 68.
The ?lter body 68 at a point above and in rela
pack ?ltering element located in the upper tank
T in the ?rst embodiment of the invention. This
?ltering, element or unit D, as herein disclosed,
‘comprises a central box-like frame or casting
'84 herein disclosed as substantially square in
form and which has its side faces open. In Fig
ure‘ 10 the ‘top' and'bottom parts are seen in sec
tion and one vertical side is seen, through the
tively close proximity to the“ bottom 69 thereof
is provided with the internal and upwardly fac
ing continuous shoulder 12 upon which is placed
a ‘ring gasket 13 of desired material. Superim
posed upon this gasket 13 is a spacing ring 14
frame, in elevation.
with which engages from above the peripheral 75
7
This frame or casting 34 is vertically disposed
when in’ applied position within the upperip "sf
sure tank U, which corresponds to‘ tank
cessfully used inponnection with various ?uids
‘but it is primarily intendedior.?1_teri,_ electrif
and
cal transformer and electrical‘ switch Toils'; '" " ’
’ Again referring to the ?rst embodiment of the
invention,v it is to’ be pointed out that the top
'_
both ends and leading’ from ‘the opening}?! Jar
‘the cover plate '88 is .the‘carryéliif pipe?g ??orre}
10
spending to‘ the pipe '48 of the first embodiment
ior‘the'mveseon;
'
j
"
“
4
'
T has suitably supported against
its outer surface at a desired location ‘an elonl
'
Qdntecti?e', with the edge feces Qf the sides
o.
of the'frame ‘creating a; and icon-forming
to
said sides "of the frame or‘castingiare ‘the con
,tinuous gaslrets vill ‘and ‘bearing amidst" these ‘
gaskets ?larethe vperipheralwportiqnséf the per
femied rlates?z which overlie thednen Sides of
gated heating element l?'l'o'f a type preferred and
the location of this element “I01 is where it ‘will
give the best e?iciency depending on the size
and capacity of the ‘tank T ‘and the partsithereél
in. While, in the accdmpanymgidrawings',’ only
a single heating element IE1 is shown, it is be:
lieved to be obviouslthat as many may be em
ployed as practice 'may demand and it is also'be
liev-ed to be obvious that such element‘ or ele
ments are to be thermostaticallycontrolled‘so
that the same will be ineifective ‘when ,theTtemA
perature of the ?uid Within the tank .T'isib’e
low a predetermined or desired degree. It‘is to
time 9149f a ‘?ltering papergr tcloihi
iQuiW-iirdly “of each applied ?ltering lamina
be stated that a similar 'heating'means yis'jtobe
tion 94 is a perforated plate 95 of substantially
the same dimensions and con?guration as the
adieqent plate 92- Ihequter face of this plate
25
‘95 ‘is ?at over its entire area yvhile the'inn‘er
‘face of the plate :915 has its major portion re:
’
aszate?, providing a comparatively shal
30
assembled and operated.
What is claimed is:
‘?ltered out or the fluid.
'
'
1. In a ?ltering apparatus, a ?ltering unit
Theperipheral portion .91 of the plate .95 co
comprising a central frame having open "sides, a
portions of the screen v93 andthe' overlying lami
discharge nipple carried by and o'peningrinto‘thé
frame, said nipple comprising means‘ ,‘ror sus;
pending the unit in position, perforated plates
nation ‘95. The vouter ?at face .of each‘ of ‘the
plates95 also has disposed thereover a ?ne ,wire
screen 93 vupon which is disposed .thereover, the 40
?ltering lamination 99 of paper orcloth and
outwardly of _.the applied screen v98 and lami
nation ,99 is an outer “perforated plate I60.
The outer ,face of this
\tiYcly shallow “recess Jill extending layer a sub
stantial portion
,of said face.. The peripheral
.
portioniin .of this'plate J00 ,coacts with thepe
ripheralmarginalportion of the plate Qito clamp
therebetween the'peripheral or .marginal por
tions of the applied screen 338 and cloth M99; ,
50
The outer plates @436 are provided at their
edges with the ouistandinetperforated lugs-1.03,
WiihihE lugs "ii-0f oi'ieplaie aligned with the
lugs I03 of the sfecondplatelin the assembly, so
‘that the elongated frigid‘membersor'bolts [Q4
55
tioned Within and restingfreely on the‘ bottom
Wall of‘the receptacle, an outlet pipe having ,an
inlet end, means removablysuspending the out
let pipe in the receptacle with said?inlet end dis;
60
JMLwith theirlasisociatedhuts' H16 serve g5 ef?ec¢
tively maintain ‘the various parts ofgthe ‘lé f‘nt
or unit D in desired assembled relation‘;
l
" The ?uid entehg‘ ‘the ‘tank U‘ news ‘inward:
65
1y through the‘ per olfatéydi-fplatds \wi0;;91"jand;a2
and the interposed
v _
I
‘
;
tl'ariiihaftionfs“ es ‘and attend
screens 83 and 2.93__into
the frame‘ or'llcals‘ting‘ Z84
and‘ out throughtne bore in er the boss or, nipple
8e and out through‘ the discharge‘ 0r".de1.ivéiy
pipes“
' This ?ltering steel-i»
‘a n
:ueit Decals-lee
_
a
H
.i
,
_
,
positions "fortre
movably rec 'iving the ends of saidebear.
'
B.
‘ j
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