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Publication numberUS2453952 A
Publication typeGrant
Publication dateNov 16, 1948
Filing dateAug 22, 1944
Priority dateAug 22, 1944
Publication numberUS 2453952 A, US 2453952A, US-A-2453952, US2453952 A, US2453952A
InventorsAlbert R White
Original AssigneeAlbert R White
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Oil-refining foldable pack
US 2453952 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

lNQV. 16, 1948. A R wHlTE OIL REFINING FOLDABLE PACK 3 Sheets-Sheet l Filed Aug'. 22, 1944 INVENTOR.

ALBERT R. WHITE BY M] Ml 'EW/fum Nov. 16, 1948. A. R. WHITE OIL REFINING FOLDABLE PACK 3 Sheets-Sheet 2 Filed Aug. 22, 1944 /A A f8.7/ .ff/r z .5.... ........:....v... I /WMWMMWMMVOW///W INVENTOR. ALBERT R. WHITE BY -Kaw-P.

ATTORNEYS Nov. 16, 194s.

l A. R. wHn-E OIL REFINING' FOLDABLE PACK Filed Aug. 22, 1944 s sheets-sheet s IN VEN TOR.


Application August 22, 1944, Serial No.1550,612

1 Claim.

the casing opening to be of a diameter equal tothe diameter of the casing interior..` If the roil rener pack is constructed With a exible core rather than with a rigid one, it is possible to make the casing opening smaller and make the pack diameter equal toor even less than the casing opening. The pack can be fed into the casing and folded or coiled into place so as to ll vany proportion of the casing interior desired. The foldability or ilexibility of the pack not only adapts it to fill a casing which has a diameter larger than the diameter of the casing opening, but the pack may be placed in casings or containers having irregular shapes and sizes. For example, the container or housing may be curved, or one portion of the housing may be larger than another.

By providing an oil refining pack which is foldable or flexible I am able to make use of the usual oil tank or sump used in airplanes and cause it to perform an additional function of cleaning the oil in the tank. The tank becomes the casing for the pack and this does away Withproviding an extra casing and thus saves Weight. Also the use of an airplane oil tank vfor housing the pack instead of using a separate casing will obviate the need of holding down brackets, bolts, nuts, ttings, and extra oil lines for the oil renner. An oil rener pack and casing is a necessity for an airplane to keep the oil clean, but where weight is at a premium, a renner has frequently not been used. By employing the oil tank as the container for the foldable pack, the extra, weight necessary for'rening the oil is reduced to a small point because the pack itself is light in weight. The cover for the airplane oil tank is smaller in diameter than the tank, and the foldable oil refining pack can be threaded through the tank opening and placed in the tank in a spiral or any other fashion. The tank may be filled to any desired extent with the pack. The tank and pack therefore perform the double function of holding the oil and cleaning the oil. A by-pass is used with the oil renner pack to permit the oil to flow freely through the tank should the pack become clogged for any reason.

One of the principal objects of my invention is to provide a foldable oil renner pack in which a flexible central sustaining member has a density less than that of the pack proper and therefore the member acts as an oil conduit..

ing purpose and t'o t any container of any ysize and shape. The pack provides the maximum amount of surfacearea compatible withthe highest eiiiciency in depth of ltering material for any given diameter and length of filtering element; The invention is simple in construction.

Other objects and advantages will appear 'in the `following specification, and the novel feaout in the appended claim.

tures of tnedevice will rbe particularly pointed My invention is illustrated in the accompanying drawings forming apart ofathis application,

inWhi-ch: i

Figure lis a side elevation of the foldable pack and illustrates its attachment in an'toil tank; :v

Figure 2 isa longitudinal section through-the foldablepack, portions being'shown in elevation.`

foldable pack placed" Figure 3 illustrates the in an oil tank or sump;

Figure 4 is a longitudinal section of amodied' form of the invention, portions'being shown in i elevation;

Figure 5 is a longitudinal section through` another modified form of the invention, portions being shown in elevation for clarity;

Figure 6 is a longitudinal section through still another modied form of the invention; and

Figure'l is a transverse section taken alongv the line 1 1 of Figure 6.

While I have shown only the preferred forms 1 of my invention, it should be understood 'that i various changes or modifications maybe made within the scope of i the appended claim without departing from the spirit of the invention.


Oil tank tank or container, indicated generally at A, and this container may be of any shapeor size desired. One type of container is illustrated in Figure 3 and is` in reality a tankjor sump used in anv airplane forholding lubricating oil. I do not wish to be confined tothe particular type f cating therewith and the oil outlet pipe 2 that is normally used is closed by means of a plug 3. The container has a cover 4 of a smaller diameter than the diameter of the container or tank and the cover has one end of my foldable oil refining pack, indicated generally at B, attached thereto and communicating with an oil outlet pipe4 The-.ii length and the diameter of the pack may be changed to accomplish any particular oil clean-.

Iwill rstdescribef the oil tank and then the In carrying out my vinvention I provide an oil 3 5. The pipe leads to the engine or other parts thau --.,ed oiling and conveys the refined oil thereto while the pipe I conveys the used oil from the engine and otherfparts yto-the tankflforistoring and cleaning purposes:v

Oz'l refining foldable pack:

It is best now to describe the construction'.v of, the oil refining pack B. The pack is shown in 1U spring, shown in Figure 2, or in any other form.

I have shown two modified forms such as a'rol'ledf screen at 6a in Figure 4 and a perforated flexible conditbfinigure. 'Thezmodiedfforms off thepaclmsh'own iniFigures '.4 iand 5 fdiffer'slightly7 f from'zthe: .form vshown. in.Fig`ures-1. and:2,'and,:1 will 'describetheni more infdetail hereinafter;

4 The pack I3 that surrounds the flexible core formed of the spring, screen, cloth and sponge may be made of any oil filtering and oil cleaning mater-iaLdesired. I prefer .touse a material 5 known as waste for thefbodyofthe pack. The

thespringf; willc'onvey the renedand filtered/ oil" therealong. y If the'passagefis formed from f a i* cor-iductingv materiali the materiall must be .less` The: flexible corezcomposed'. ofI the coilrsprirxg: Uridnselthan i-,hatrfrmjng the pack 6 hasione end inserted im anpoutletzpipe Fand# A thespring .'issecuredinplace byanysu-itable fass teningmeans such as.- byy nails `8-that-are'fpassed'f.` through theLpipe'fandscreen'and extendxatfright anglesfto' each'. other.; seecFigure2; ;.Around:the 25am-,ing wfthams-wrapped aroundthpack attache:

spring I: dispose--` aA screenfSrandth-e screen may consisttof one'ormore layers:Y 'I'h'escreen iswheld'.:I in place on the spring byaclotlicasingf IUthats. alsoV actsfa as; f anffoilf `filtering: medium: i Figure 2 screen 'beingnattened asszndicated: Thefcloth casing: .I uncovers fthe .entirealength of t thevscreenf 'e 9 Aar'idhasrits, free-end. pressed"A flat so: as: toiconitl'i'e.- clothrf'IIIrIfdi'spose one orxmorei layersrrofa vegetable sponge such as a lcoiah: sporrga` I bandi.' the sponge-'extends fthrough'out'fith lengthaoffthe fabricvIII- Thepurpo'sesof .thespongevis to abe,

sorb water from the oil without absorbing-.soilsl 4 ency of the foil `tov.flovwalongfthe outer:surface of '5mg the pipe 'I toward thescreen is preventedby` thezheavystringzwinding fl 2;'and`the1astr-ing4 will act'asr an .-oil'fdeector-"for: directing? the'i oilI :into the body I3 of the pack. Any oil that does seep",

The heavy string winding-.121 nntp-:only: "452:

end, vthestring 'preferably being: wrapped'faround" the `-pack throughout" its' length 1 inl'orderj to i holdi theJ'abri'cl casing? I5r in'v place-while perrnittiliig#v 4 the* pack'f to :bei folded. Figure' `1 illustrates@ theA1 illustratesthe :screen 9'extendingfbeyondtthe"freet fagsting IBas'beingwrappedaroundthe .fige-.errd; end of the spring 6, the proJecting portionfOfi'lhHl of the -packforholdingithemateiiall'iin place."`

Thefabric casing I5 hasf its other vend broughtif' tightly around the-,pipe rI" and' secured" inplace f by=the same stringfIG' In'i'this Wayrthe packris' taCtthHattenedfportion of 'the A'screens c Around: ,'snsecredto: thpipe-T and yetfthe pack, is flexible;

position finl a' container:

The particular mea-ns'ffor securing thepipe If tothe cover1 4 o f thetank Aisillustrated in Figholds'anasbe'stoswasher I8 against the underside. of the tank `cover V4. thiougnan opening` I Slinithe cover' and receives .a

second"Y asbestos washer 20"that be'ars against. 'the outcr'side .of the cover.

moved onto the `pipe Ifand'bearsagainst the,as...

as ,at 22a.:andthe ring 2I. is. made-of 'a metal soft through the heavy string-winding will be filtered 5Menough to have a portion thereof. forcedinto the and.cleaned.before treaches ,the coil spring.

The opposite .i end-of :the .coil springsfrom. the4 v piped is .enclosed-bythe; screen r9, the-fabric Ill';` andithe-loofah sponge I I, alhof theselelements ex-f tending.. beyond theend of the-spring-.and-being.; vmy.

into the?. end vof 'th-eicentral.l passage; forrn'' therspring; intoztherbody of the pack: I 3,4 .andathisz' prevents rthe immediate entrance of "the oil'fintov the` central" oilY passageiprior =to.=its beng-fltered` upztheheavystringfrwinding= I4 Y andI the same :is trriesof'theaheavyrstring Winding. I2. 'Thewind-v ings Izlanddidcanbe regarded fas flexible oil-Jd'e-i Y ctors e and;` 'asa securing means for holding"` the f1 pazftlsf. together: 1

groove for-aidingain`lmaking alliquid-tight seal. between theipackiandrthe'icoverl The.-oil outlet pipeI 5s; connects-I with the i sleeve.- 22; thus` corn-vv municatingf: withy f the pack -Bf.

I providea-.bypass-valve C ffor the'pipel; see Figurewl; The, bypass functions automatically in* caseathe-Ip ackafbecomess clogged;` When"the by@E passfisopengdirect communication-is established:

betweemther tankzinteriorrand outlet pipe 5.`

ball'va'lver'28xf'f. Th'e-ball is keptseatd'"againstthe'- and rened; A number ofrlayerg ofrstrmgrmak'ef 70- seat-e29rinfth'escasinguntilthezpressure'of'oil inw the tank iAreaclesfa point-sufliientrto'unseat the ball=`283andf-compress'the spring' 21." The' valve body?.l 26Ihfs^ a'. plurality# of 'f openings i 30T therein The pipe. 'I extends- A metal ring. 2 I is4 the nipple 24 with respectJ to the casing 26 and in this way the Valve may be adjusted to open at any predetermined pressure.

Operation From the foregoing description of the various parts of the device, the operation thereof may be readily understood.

The container A, illustrated in Figure 3, `can be partially lled or entirely filled with the oil refining pack B. The diameter of the pack is made less than the diameter of the opening 3| in the container so that the pack can be fed through the container opening and coiled within the container as indicated. By using a flexible pack the container can be filled by the pack to any desired extent, even though the container diameter is larger than the cover diameter. I do not Wish to be confined to the particular type of container illustrated since the container can assume various shapes and sizes. In fact the filtering element B is designed to be placed inside a housing of irregular shape. On the other hand the pack may be of a given size to t a standard oil refining casing that has an opening of the same size as the diameter of the container. The housings may be of various dimensions and the pack can be made of the required length and diameter to provide the proper amount of filtering material for the oil in the tank. The oil rening element B is therefore of a universal type since it may be inserted into housings of any dimension and contour and fill it partially or completely. In this respect the pack has a decided advantage over the rigid type pack because it can be fed into a container where the opening is not of the same diameter as the interior diameter of the container.

In use in airplanes the foldable pack has extreme practicability because the airplane oil tank may constitute the casing for the pack as well as the reservoir for oil. The only additional weight added to the airplane when adapting it to clean the oil is the weight of the packitself. The pack is constructed from porous material which will become saturated with oil when in use and therefore the intrinsic weight of the pack is very slight. The pack does not displace much oil when saturated, so the tankl need not be enlarged when using the pack. The tank A when supplied with a pack performs a double function of acting as an oil supply and also acting as an oil cleaner and renner. A tank can only function in this manner when a flexible pack is used because the tank opening is so small in comparison to the tank diameter that a long pack must be used and the pack must be flexible and foldable in order to be fed into the tank.

In actual operation, the oil will be pumped into the tank A through the pipe I and will fill it. The oil will be forced through the pack body I3 for cleaning it. Foreign substances will be retained by the pack body. The loofah sponge 6 will remove the water from the oil and the fabric casing I and the screen 9 will form a exible and porous wall for the central passage of the pack. The spring keeps the fabric ID and screen 9 in cylindrical form to provide an oil passageway. The oil passageway is iiexible and has a density less than the density of the pack body I3. Of co-urse the density of the passage is nil when it has no material therein. The cleaned oil once entering the central passage will flow therealong because it requires less force to move through the passage than through the pack body. The refined oil f extend atrightangles to each other.

passes through-the pipe 1 and into the return pipe 5.

Should the pack become clogged *forl any reason spring 2. The ball 28 will be unseated by the increased oil pressure and the bypass C will. permit the oil to flow directly into the pipe 1. The bypass prevents the tank A from being subjected to too great a pressure and permits the oil to continue to flow out through the pipe 5 should the pack become clogged for any reason and cease to function.

In Figure 4, I show a slightly modified form of pack BI. A rolled screen 6a takes the place of the spring S and the fabric Illa, is wrapped around the screen to hold it in place. The screen 6a has one end inserted into the pipe l, which end is held in place by the nails 8. All other parts of" the pack are identical to that explained for the pack B; therefore further description need not be given. Like reference numerals will be applied to similar parts,

This flexible pack BI will function in the same manner as the pack B shown in Figures 1 and 2. The screen 6a will forma central passageway having a density less than that of the pack body I3. If desired the screen 6a canpartially fill the central passage without yimpecling the flow of oil through the passage because the oil can ow readily through the screen meshes. On the other hand the screenv is preferably l rolled` into al cylinder that forms a central passage Which'is free from any obstruction. The rolled screen 6a is flexible and supports the pack bodyl3, loofah sponge II and fabric Ia.

Another modified form'of pack B2 is illustrated in Figure 5. Here the centralpassage of the pack is formed by a flexible conduit Bbl that has openings 32 formed therein. A screen 9 covers the conduit and is in turn coveredby the fabric I0. The flexible conduit Bb has-one end inserted in the pipel which is secured in place by nails 8 that y The flexible' conduit acts Vas a flexible central sustaining member for the pack body. All other parts of the pack" are identical kto those described and illustratedin' Figure 2. Like reference numerals will be applied to similar parts and further description need notbe given In neither Figures 4 or 5 do I show the free end of the pack as I do in Figure 2. In both modified forms of pack BI and B2, the central conduits are flattened at their free ends and so also are the screen; fabric and sponge. Heavy absorbent twine is Awramoedaroundthe `iiattened portions inthe sameV manner vas I haveindicated in Figure 2. In fact, thefree vends'of the forms of the packs BI and B2are the same as that shown in Figure2 except that inthe pack BI, the screen 6a takes the ,place ofthe spring 6 and in the other pack B2, the flexible conduit 6b takes the place of the spring 6- A modified form of pack BI or B2 may be placed in the tankA or in anyv other container and function inthe same manner as that set forth for the'pack B.

Although the oil may now in a reverse direction through the packs, I do not advocate such use because the internal pressure will have a tendency to burst the pack and the binding I6 would need to be made stronger. The vital point is the provision of a flexible central sustaining member for the pack body with an oil passageway in the pack body of less density than the body proper. Such armena:

aepack: can beeinserted inzlcontainerswon everyr';

conceivable shape and size. A portion of the high pressure roil.l systemgfor. a machine :or :engi-ne l,can constitute., the Vcasing for -theriexible and foldable pack. v Very 'little radditiona-l weight is added Y when usingthe pack'fina part ofthe oiling system and' no.: additional-space.: is` required-i -Irrz Figures 61 and' 7:1 show anotherfmodied" form of pack wheres an :alkali'has` been added to the rpacl-cylrzody` to' keep;theoil neutral las well ,as to cleanse the oil-aswit flows though the pack. The I oiliatrthel renery:is Lneutralized asto .acidity'by f adxlingzan'alkali; Theroilnto-be-neutral should have a pH value of 1. When oil is used in an engineritzbecomes" acid in1reaction because thej'acid isaformed asa product of: combustion. Thexoil atuthe'stop,l of .the -cyclinders-I and the motori -uel burnedin thecylinderszform: acids: which draw in down aroundlthepistonwalls and'nd their `way intothebody'offoil. The moisture resulting :from condensation:orV from leaky: gaskets enters.` the crankucasei and Ythrough agitation `mixes vwith the acidsoin; the oil Vto form al sulphurous acid which f has a corrosive effect on the metal.

Long-.1 use; of 1 ,the s automobile; or tractor.r engine for tenctl'iousand:to twenty ,thousand miles causesA anacidityof thefioil which'wherrcornbinedV with themoi'sture:might'hairm `the engine.- It is therefore apart ofimyinventionfto provide a pack with anfalkalkso rthatrthefpack will; not only keep the oiizvi'sua'lly., cleanbut will'also neutralize the acid content'iof the; oil;` The alkali-used forthis purposfmaybe sodium carbonate, potassium carbonatevor any alkali having the ability-to neutralize,-

1Q. 'midd1ethird, disclosed 'in Figure 6. For example,

'7 is thesame as .-thatfshownin Figure@ and-thereff.y fore: further description need not ,fbe given. andil corresponding parts will beogiven like-reference` numerals.

I do not wish to b'econnd to the layer 5U taking up the. middle third of the cellulosic body since the .pack body: might be treated throughout with' an alkali or be partiallytreated andthe treated portion be. in some otherposition than the the alkali jtreated layer may be on. the outside of the pack or inthe Very inside of they pack'. YIt' could 'be placed at or at the hottom'ofl the pack.. A1I.'.`of,these various modifications are. gdemedtocome Within the scope of the appended,


I claim: vA 4i'luid iilt'ering pack having a ilexible hollow4 core acting as. a fluidtpassageway, a pipe comqgmunicating Awith"oneend of the core, flexible screeningu means .enclosing the core, a layer of sponge enclosing `said,L screening means, a uid absorbent` cord/wrapped around the. screening,

means, sponge. and pipe` for connecting them to.

Soggether, a second fluid absorbentcord Wrapped around ,the freeendof the screening means and sponge to close the free end of.the core, a' flexible` aCiditylin-oi-ls. 'In fatfany alkali having the'abi1 xcasing,enclosingthe entire. pack assembly, said ity? toneutralizefacids in anzoil comesfwithin the scope of my invention.

Apaclezwhen used for cleaning oilbecomes contaminated'withforeign matter after a time.` It

is :thereforernecessaryjthat the pack be renewed? from time1to'time. The alkali'in. thepack will neutralize: the: acidfconditionr'of' the =oil and as. theipackfbecomesfolder; the alkali willz'be used uprso thatracidtyiof-the oil will rise; I'prevent this'acidity from reaching dangerous'proportionsA 45 .Number byrrenewing .tlfierpack. :and fthe new" pack `will have sufcient' alkali therein -forry neutralizing thefoil;

Theipacks'vpfer-form the dual function of removing contaminants'r. from the oi-l and` keeping the Y oil Diesel: engines"fform--acid' oil moreY 50#` quickly than engines using.- gaso1ine-as `a motor' neutral-.

Strongly? basic, materials, such asf sodium hydroxide'xorf potassium hydroxide cannot; be used asf'anr'alkali` inthe 'pack' becausenthev chemicals are 4-too.- caustic: in' nature 'and would: evenl inj ureY the'vcellulosic-'portions` othe pack.-v Referring-to Eiguress' and? it will be noted that therpack structure B3 is the lsame as that'shown in Figure:- 21except'that an-alkali treatedstrip 50 -forms aparttof the'body-I 3 of the pack. The striporflayer Sleis :formed finto ya cylindricaleportion and takes up: approximately the;middle third'of the cellulosict-packffabric.

the7 alkali solution orvbyplacing the` alkali in crystalline form in the layer. In all .otherrespects thestructureof the pack shown in Figures 6. and

` Theflayerf-SU.` maybe impreg nated `with ythealkali by saturatingA the layer with 40h. The following references are of' record "in the le of this patentz UNITED STATES PATENTS-y Name Date 47,261 Simmons'y Aprf. 11,"1865' 925,258` Winston-et al June 15, 1909 1,0153166 Adams et a1 Jan; 23, 1912 '1,'4892519 Chateau Apr. 8, 1924 1,791,046' SWeetland Feb. 3,' 1931 1,-8475817 Cole Mar. 1, 1932 1,996,469 Frolander Apr. 2, 1935' 2,064,097 White Dec. 15, 1936* 2,079l366 Thomas May 4, 1937 2,243,296 Sweetland May 27, 1941 *21,250,299* Downing' July 22, 19414 2,274,113 White Feb. 23,` i'sTz'y 2,3201990 White June 8; 1943l I2,343,427 Wells et'alf Mar. '7, 1944"' FOREIGNv "PATENTS Number Country Date 2,799 Switzerland Nov. 4,' 18901. 101,151 Y Australia .May 25, 1937" 234,151. A France Nov. 13, 1893. 549,086. Germany Apr.` 22, `1932 605,915` Germany Nov. .20, 1934 606,026. Germany Nov. 23,'19341

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US47261 *Apr 11, 1865 Improvement in filters
US925258 *Dec 19, 1908Jun 15, 1909Winton Motor Carriage CoLubricating system for automobiles.
US1015466 *Oct 11, 1907Jan 23, 1912William E AdamsOiling device for gasolene-engines.
US1489519 *Feb 7, 1922Apr 8, 1924Chateau JulesFiltering device for liquid carburetants
US1791046 *Jul 18, 1924Feb 3, 1931 I-imeb and heans fob stjppobtina sake
US1847817 *Dec 18, 1918Mar 1, 1932Dooley Improvements IncLubricating system
US1996469 *Feb 24, 1932Apr 2, 1935Frank C FrolanderRenewable filter
US2064097 *Oct 23, 1934Dec 15, 1936Albert R WhiteOil refiner
US2079366 *May 27, 1936May 4, 1937Albert G ThomasFilter
US2243296 *Jun 1, 1938May 27, 1941Sweetland Ernest JFilter element and method of making the same
US2250299 *Jan 18, 1937Jul 22, 1941Oil Clarifier CorpOil filter
US2274113 *Oct 14, 1938Feb 24, 1942Albert R WhiteOil refiner pack
US2320990 *Jan 8, 1940Jun 8, 1943Albert R WhiteOil refiner pack
US2343427 *Feb 28, 1941Mar 7, 1944Purolator Products IncFilter
AU101151B * Title not available
CH2799A * Title not available
DE549086C *Apr 22, 1932Elektronmetall GmbhSicherheitsvorrichtung an Schlauchfiltern, insbesondere fuer Schmieroel
DE605915C *Nov 20, 1934Wilhelm HaegeleOEfilter
DE606026C *Jun 10, 1931Nov 23, 1934Georges RothFluessigkeitsfilter
FR234151A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2548965 *Oct 3, 1947Apr 17, 1951Gen Motors CorpFluid filter
US2778502 *Jun 22, 1953Jan 22, 1957Albert R WhiteCombined quick-coupler and hollow core for an oil-refining pack
US2778503 *Jun 22, 1953Jan 22, 1957Albert R WhiteQuick-couplers for securing oilrefining elements in housings
US6875346 *Dec 26, 2002Apr 5, 2005Diane N. FoxFilter
US20040124127 *Dec 26, 2002Jul 1, 2004Fox Diane N.Filter
U.S. Classification210/458, 210/501, 210/489
International ClassificationB01D35/147, B01D29/15
Cooperative ClassificationB01D35/147, B01D2201/0461, B01D29/15
European ClassificationB01D29/15, B01D35/147