US1602935A - Clarifying device for liquids - Google Patents

Description

Oct. 12 1926.

A. L. RASI IY .CLARIFYING DEVICE FOR LIQUIDS Original Filed June 26 1922 i: ll. uvlnllul ww W A TTORNEYSZ Patented Oct. 12, 1926.

ALBERT 1.. nAsEv, 0E MILWAUKEE, WISCONSIN.

cmnmyme DEVICE FOR mourns.

1,502,933 PATENT OFFICE.

Original application filed June 28, 1922, Serial No. 570,886. Divided and this application filed January 7, 1924. Serial No. 684,734.

This invention relates to improvements in clarifying devicesfor liquids. The specific disclosure herein "relates more particularly to an embodiment of my invention which is peculiarl adapted to remove physical impurities rom oil.

It is the primary object of this invention to produce a device capable of efiecting the rapid removal from any liquid all physical impurities, such as solids or other liquids of greater specific gravity than the liquidto be purified. Filters and other devices now available are both cumbersome in size and slow in operation.

It is a further object of this invention to provide a clarifying device of such a size and character as to be peculiarly adapted for association with the circulatory lubricating system of an internal combustion engine or the like.

a circulatory system for lubricating oil involves certain problems which, to the best of my knowledge, have not hitherto been solved. Attempts have been made to clarify the oil in such systems by the introduction of screens and similar mechanism for filtering the oil. These expedients have proven unsuccessful for the reason that in a very short space of time the filters or screens have become clogged and wholly inoperative. In

my copen ing application filed March 8,

1920, Serial No. 364,335, and entitled Separaters, I described a device which Ihave used with partial success in a circulatory system for lubricating oil. In the device disclosed in that application I utilized the current of-an automobile generator toenergize magnets'arranged in the path of flow of the oil. to the end that these magnets might draw from the oil 'all particles of magnetizablemetal carried, therein. I found that as long as the generator was operative the magnets accumulated a clot of impurities" but that when the generator ceased to'function due to the reductionin speed or to the stopping of the motor theclot of impurities held by the magnets was released'and allowed to return into the cir-- -,culatory system where it-tended to stop the P tsages and minute openirgs of the'motor. Furthermore the device "sclosed in the j-above' identified ap lication did not ipermanently remove vrom' the liquid uid and other non-magnetic impurities carried thereby.

It will be readily understood, therefore,

REI'SSUED r that further objects of the present invention are to provide a'clarifying device which will wholly and permanently remove from liquid passed therethrough any magnetic 'or nonmagnetic physical impurities carried by said liquid; to provide convenient and simple means for collecting and drawing off suchimpurities whereby the circulatory system maybe permanently rid of them; and to provide a simple,.compact and easily confrom the claims hereunto annexed, this ap-' plication is directed to the clarifying device per se asadapted for useunder any desired conditions. .The combination of this device The application of a clarifying device to with a circulatory systemen association for which it is particularly adapted, as here'- in e2 plained,'1s claimed in my co-pending application #570,880 filed June 26, 1922 of which application this constitutes a division.

In the drawings Fig. 1 is a side elevation of theinternal combustion engine of a motor vehicle with a device embodying my invention applied thereto, portions of the electrical system of the vehicle being illustrated diagrammatically.

Fig. 2 is a vertical central section'through the chamber within which clarification of liquid is efi'ected.

Fig. 3 and Fig. '4 are detail views upon 'structed mechanism capable of achieving the I an enlarged scale of two of the conical cu s which are disposed within the clarifying evice shown in Fig. 2.

Like parts are identified by the same refi erence characters throughout the several views, whlch illustrate the device 1n service in association with an internal combustion engine under conditions for which the embodiment herein disclosed is particularly designed.

An internal combustion engine-is represented at 10, and 11 represents an oil pump which is preferably mounted, as usug, in

association with the lowest portion 0 the sum 12 of the crank case 13, of theinternal' com ustion engine 10. A pipel connects the delivery end of oil pump 11 through my improved clarifying device 15 with a point 7 -erences of .each engine manufacturer.

16 adjacent the top of the internal combustion engine. It will be understood that the oil pumped by the device 11 will be distributed to the several bearings of the internal combustion engineeither by gravity or by the pressure systemj according to the prefinstall the oil clarifying chamber 15 it is only necessary to cut the pipe 14 (the deliv ery pipe from the pump) and to insert the chamber 15- into the lubricating system by attaching thereto the severed ends of pipe 14.

The chamber 15 is shown in Fig. 1 to be supported b a bracket 17 from-an upright member suc tended to represent, diagrammatically, a portion of the dash of the vehicle. Bracket 17 preferably comprises a single resilient piece of metal bent to the form shown in Fig. 1 and apertured adjacent its end in order-that it may be clamped between nuts 19 and 20 upon the bolt 21 which is centrally disposed. within, chamber 15.

The oil clarifying chamber 15 includes an upper or body portion 22.0f cylindrical.

shape and closed at its top with the exception of the port '23 through-which the interior of the chamber is put into communi cation with the discharge and 14 of pipe 14. The bolt 21 is threaded into the upper portion of the cylindrical body 22 of the ed to receive bolt 21 with afairlychamber and is axially disposed therein.-

The lock nut 20 threaded upon bolt-21has the further function of securing against the body 22 of the chamber a fiber plate 24 upon which binding posts 25 for the electrical c0n noctions are conveniently mounted. As previously stated, the bolt 21 is made of sufficient length to permit the threading thereon of a second nut 19 between which and the nut 20, the laterally bracket 17 is secured.

A cup shaped member 26 'is threaded upon the lower end of the cylindrical body por tion 22 of the clarifying chamber. This cup shaped member 26 is ported at 27. A stop projecting arm of ,cock 28,controls the delivery of material through said ort.

A tube 29 as .its lower end threaded in such a way as to permit this tube to be screweddownwardly into the port 27 in the mannerindicated in Fig.2. Openings 30 communication between the interior'ofthetube and the in ter ior of the cup shaped bottom closure 26, to the end that any material accumulating in the 'cujshaped member may readily be drawno through the stop' cook 28.

It will be'noted that tube 29 is centrally positioned within chamber 15 and is adapt- The arrangement'is such that the bolt 21 and tube 29 serve as guides to facilitate the manipulation of-the cup shaped cap 26 into its as the'board 18 which is inproper position of en agement with the lower end of the cylindrlcal body portion 22 of the chamber.

The tube 29 is shouldered at 31 and has a reduced diameter from that point-to itsupper extremity. SupportecLfrom the shoulder 31 are a number ofsubstantially conical cups spaced from each other and from said shoulder by collars 32. The bottommost cup 33 is preferably inverted as shown in Fig. 2. The remaining cups. 34 and 35 are alternately of the character shown in Fig.4 and Fig. 3. Each of the several cups 33, 34, and 35 is similar to each other cup in its shape,,- each is preferably the shape of a truncated cone at its smaller end,each cup is pro- Vided with an inwardly directed, annular flange36. These flanges 36 are disposed upon the reduced upper portion of tube 29 and are confined between adjacent spacing collars 32. A collar 32 threaded upon the upper extremity of tube 29 clamps the entire assembly of cups and spacing collars in lace upon the tube.

ups 33, 34, and 35 are each provided with an opening 38 very close to the flange 36. Cups 34 and'33 differ from cups 35 in that each of the cups 34 and 33 is preferably of slightly greater diameter at its larger end than the cups 35' and is also provided with a plurality of openings 39 in addition to-the project outwardly to a point extremely close .to the inner wall of-t'he cylindrical tion 22 thereb flowing throug chamber 15 to pass through the openings 39 rather than to pass outside of the periphery of cup 34.- Each cup 35, however, lacks the openings 39 and the periphery of these cups is correspondingly farther removed from the inner wall of the cylindrical member 22. Thus the several cups actas baffle plates and cause liquid flowing through chamber 15 to flow around cups 35 and through cups 34 for the most part. It-is not necessary for the proper functioning of this a aratus that cups 34 be so large as to fit tightly within cylinder 22 and prevent the passage of liquid about their peripheries.

body porthrough the extremely limited space availthe-inner face of member 22.

The exterior of thecylinder 22; which forms the body of the device, is peripherally able between the peripheries of'cups 34and recessed and is thereby adapted to-receivean electrical winding indicated at 40 in Fig.

2. The two ends 41 and 42 of, the wire '40 are led outi In' fact I believe it advisable to allow a small portion of the liquid to pass tending to .cause aliquid...

the winding 40 and thereby creating a magnetic field.

v strength of the magnetism in those-elements I to pass inwardly toward the tube 29 due to' The chamber 15 including the bodyportion 22 and the lower closure 26 thereof .1s pref-' erably made of non-magnetic material, such as white metal or aluminum. The several caps 33 and bolt 21 are preferably made of soft iron or some other good conductor of magnetic lines of force," The arrangement is such that the tube 29 and bolt 21 will constitute; a core in which the mag netism developed by the current flowing through the winding 40 will be concentrated. The metal ofeach of the cups 34 and 35 will also be magnetized, but the will decrease toward their eripheries. Thus when a magnetic partic e is withdrawn from the oil at the periphery of one.

of the cups 34 or 35 the particle will tend the greater magnetism existing in the center of the device.

r in operation.

' function of the cut-out is to prevent the current stored in the battery from expending itself through the windings of the gen-v e'rator at such times as the generator is not A single wire. system is illustrated. One terminal of the generator is 'connected with the ground at and the other is connected by wire 46 with one of the binding posts 25 carried at the to of the clarifying chamber 15. From the ot er of the; binding posts 25 a wire 47 leads to .the cut-out. device 44, which is commonly mounted upon the dash v 18. A- conductor 48 leads from the cut-out I I'M 44 to one terminal of the battery 43, the other terminal being grounded at 49. It will be understood from the foregoing that the generator, the winding .40 upon the clarifying chamber 15, the circuit breaker or cut-out 44, and the battery 43 are all connected in series.. When the cut-out'device '44 is in its closed position the current delivery from the generator to the battery must necessarily pass about the winding 40 upon the clarifying chamber 15. -It is not necessary to utilize a great deal of energy in the coil 40. In the devices which I have actually constructedand put into operation the current loss is so small that it cannot be detected-with an ordinary ammeter. The arrangement is obviously such that this device consumes a minimum of current: The magnetic coil 40 is onl operative while the generator 42 is charging the battery. In other words, as soon as the engine is in operation the coil 40 will be carrying electricity and the magnetic elements of the device will be energized. As soon, however, as the motor drops below the speed'necessary for charging the battery, or when the motor is stopped altogether, the automatic cut-out device 44 becomes operative to break the circuit and the coil 40 of the clarifying chamber is disconnected from the battery. I am thus able to provide current for my device when current is needed and to 'render the operation 8 0 of the device wholly automatic so that the current is shut off to prevent wastage of the battery at such times as the oil is not circulated' through the clarifying chamber 15.

Where the device is used elsewhere than in a motor vehicle its coils will be energized through any switch controlled electrical circuit and the operatormay turn the current through the device at such times as oil or otherliquid is passing therethrough.

\Nhen the motor 10 is running, the oil collecting in the sumpportion 12 of the crank case 13 will be impelled by pump 11 through pipe 14 into an intermediateportion of the chamber 15. It will be noted by reference to Fig. 2 that the pipe 14 discharges into the chamber above the inverted conical cup 33 and between the cups 33 and '34. It is the function of cup 33 to provide a partial 010- sure for the lower portion of chamber 15 in which the sludge or foreign particles removed from the oil by the operation of this device may collect without becoming entrained by the flow of oil entering the de- -vice through pipe 14.

The oil flows very slowly through chamber 15. It would impossible to make tube 29 non-magnetic and to make the cylinder portion 22 of magnetic material, the arrangement being. such as to draw the magnetic particles outwardly instead of inwardly, but in that construction the oil would have a" com aratively rapid rate of. flow since it;

won d pass about the bafiie plates at their small ends instead of at their outer extremities, as in the present device. For this reason the constructionillustrated is preferred. Another reason for preferring the present construction is found in the fact that herein .120

the magnetism is concentrated at a point remote from the path ofliquid flow so that there is a constant tendency to withdraw magnetic material toward the axis of the device and out of the cburse of flow of the liq- 11 uid. The oil or other liquid entering through 5 pipe 14 passes upwardly within cylinder 22 until it encounters the 'cup or the baffle 34. The combined atea of the several holes 39 1n this cup, together with the area of the space 0 00 The operation of this device is as follows: a

between thev periphery of the cup and the inner wall of cylinder 22 is, obviously, greatly in access of the area of pipe 14. The rate of flow of the oil past this baffle, and the other in the series, will, therefore, be comparatively slow.

A small part of the oil will flow between the periphery of plate 34 and cylinder 22. Such oil as follows this course will pass the periphery of cup 34in the form of a thin lm so that any particles of foreign matter carried by the oil will be brought in extremely close proximity to the periphery of the cup. If these particles of foreign matter are of magnetiomaterial they will cling to the cup and will gradually pass downwardly along its inner surface toward the center of the device, being urged in that direction not only by the greater magnetism existing at the center of the device but also by gravity. Non-magnetic material will a so accumulate about the peripheries of the cups and. will tend to pass downwardly toward their lower portions. Doubtless some of this non-magnetic: matter adheres to magnetic particles and is drawn with the magnetic particles to the center of the dc vice." Other non-magnetic particles doubtless adhere to the cups themselves until they are dislodged by the flow of liquid past them or by some other cause and are actuated by gravity toward the bottom of thecup. The space between each pair of cups also constitutes a settling chamber wherein the speed of the oil is greatly reduced. The

non-magnetic particles which have been carried in suspension by the rapidly moving oil will settle out when the speed of the oil is reduced following its entry into one of the relatively large spaces between adjacent cups or baffles.

It has already been stated that a portion of the oil passes between the periphery of cup 34 and the inner wall of cylinder 22. The remainder of the flow will take place through the several openings 39. In the next succeeding cup 35, however, no openings 39 are provided and it is'necessary that the entire flow of the liquid take place about.

the periphery of the cup. In order not to restrict unduly the flow of oil through the device, cup 35 is of smaller size than cup 34 and a greater unobstructed area lies adjacent its periphery. The thickness, however, of the film of oil delivered over the periphery of any of the cups 35 is relatively very small and any magnetic particles still car ried bythe oil must pass so closely to cup 35 as to come within the field of magnetic attraction exercised by said cup and hence- 'will tend to be drawn from the oil and retained by the cup. I

Above cup 35 is a second cup 34 and as previously stated, it will be necessary for a large part of the oil passing about the other foreign matter.

periphery of cup 35 to find its way throughthe opening 39 of the succeeding cup 34. This construction brings about a downward current of oil between the first cup 35 and the second cup 34, thereby facilitating the movement toward the center of the device of any particles offoreign matter which have been retained magnetically or otherwise by cup 35. Furthermore when the body of the oil moving downwardly between cups 35 and the second cup 34 turns upwardly to pass through openings 39 there will be a tendency for all solid matter carried in suspension to precipitate toward the bottom of cup 35.

During the progress of the'oil through this device it is subjected repeatedly to the action of the mechanical and magnetic agencies tending to remove all foreign matter therefrom. It has been found that even water and other like liquids with greater specific gravity than the oil will become separated from the oil during the passage of the oil; through this device. When, eventually, the oil reaches the top of chamber 15 and passes out through pipe 14 it will be clarified and free from all grit or It will beremembered that each of the cups 34 and 35 is provided adjacent its smaller end with an opening 38. As the sludge or foreign matter gradually accumulates in the cups it falls downwardly through openings 38 toward the bottom of the device and eventually reaches the cap 26 within which it is retained until the cook 28 is opened. The chamber 15 is preferably located well above the remainder of the circulatory system of the motor so that when cock 28 'is opened only such oil as is retained within the chamber will flow out. The flow of oil from the'chamber will carry with it practically the entire accumulation of sludge, grit and water from cups 34 and therefrom, will carry with it the entire assembly .of nested cups' 34 and 35'leaving only the bare interior of the cylindr cal body portion 22 and the bolt 21 PIOJBCtlIlg v 35 as well as from capr26. If, however, it I is desired to give the device a more thorough cleaning the cap 26 may be unscrewedfrom "the body portion 22 and, when removed centrally downwardly therein. Obviously,

the device may then be thoroughly'cleansed and readily restored to operative COIldltlOIl by replacing cap 26.

It will be noted hat beneath the openings 39 toward the center of the device from sai openings) there-is a considerable space for the accumulation of foreign w matter. In other magnetically operated" oil clarifying devices it has been a fact that 'as soon as the supply of current to the devices became low or was cut off altogether, due

to the low speed of operation of themotor, the electrically induced magnetism cally is permanently retained in the lowerportions of the cup out of reach of cur-' rents which might tend to draw these particles again into the main fiow of the oil. This device is particularly well suited for use upon a motor vehicle or in combination with an internal combustion engine. I have foundthat the vibration set up by the operation of an internal combustion engine (such as the engine of a motor vehicle) is very helpful in effecting a separation of; both the magnetic and non-magnetic particles from the'oil. It is clearthat when a bit of iron.

.to occupy a minimum space ,for a given or other 'magnetizable materialhas been at tracted to the periphery of one of the cups 34 or 35, the vibration of the whole device, induced by the operation of the motor with which it is associated, will tend to aid gravity andthe greater magnetism existing at the center of the device to draw that particle downwardly toward the bottom of the cup.

- The vibratoryaction likewise will assist in causing matter accumulated in the upper cups to pass downwardly through openings 38 into the cups beneath. I also believe that the vibration accounts in some measure for the success of the device in extracting nonmagnetic particles as well as magnetic particles from the oil.

To the end that I may utilize as far as possible the beneficial effects of vibration- .I prefer to mount this device ,upon the type bracket shown at 17 in Fig. 1. As pre-- of viously stated this bracket comprisessimply asingle piece of resilient metal and the chamber 15 is suspended from the'bracket as shown. p

While the clarifying device above described is particularly adapted for use upon a motor vehicle, its value is not restricted to this use. So-far as I am aware this device is the first practical clarifying device hours to pass, whereas the same quantity of oil may be clarified in my device in a fewminutes. I have connectedithe chamber 15 in an oil line through which oil was fed by. gravity and have, energized the winding 40 with electricity from a, lighting circuit with good results. B1ack,.gritty oil passed through the device was discharged free from grit and with original light color restored. Similarly I have applied this device to motor vehicles wherein the motors contained 011 which was black, gritty and apparently non 'viscous and after a few miles operation of the vehicle the oil has beenfreed from its grit and its viscosity been restored.

:Although ,I have described my invention with particular reference to a device adapted to clarify oil, I do not desire to and light color have limit myself to a device of this sort since construction illustrated as being an extreme ly simple and convenient embodimentof my invention, and while I believe that. by utilizing the construction illustrated, devices embodying my invention can be reduced in size capacity, I, nevertheless, do not wish to limit my invention in any way to the particular construction above disclosed.

It will be clear to those skilled in the art that many other constructions might be adopted in which the inclined baflleplates and magnetic elements: of the present disclosure might be,,rearranged to utilize the principle discussed above, whereby the foreign matter, once separated from the liquid flowing through the device, is withdrawn by magnetism and gravity to a point remote from the path of flow of the liquid and is i there maintained against the possibility of becoming again taken up by the liquid.

I claim: I

" '1. The combination with an oil passage in-' 'cludinga chamber, of a magnetic body disposed in said chamber in the path of fluid therethrough, .a second chamber beneath said magnetic body and in communica:

tion with said first chamber and remote f-r on'l the path offluid therethrough, a coil having said magnetic body within its influence, and an intermittentlyv operated source of electrical energy operatively connected with said'coil, whereby said body will be intermittently magnetically active to remove magnetic particles from fluid passing through said'chamber and a large portion of said particles upon. their release,

from said body during the-magnetic inactivity thereof will finally pass into said second chamber. a c

2. The combination with a fluid duct ineluding a chamber, of'a plurality of spaced magnetizable plates'inclined within said chamber and having their upper margins in the path 'offluid flow therethroi'igh, said chamber providing a settling cavity in a. position to receive material gravitationally from said plates and remote from the path of fluid through said chamber, a coiled elec- 6 trical conductor including said plates within its magnetic influence andadapted to produce a magnetic field concentrated at a point remote from the upper margins of said plates, and an intermittently operated source 710 of electrical energy to supply current to said conductor, whereby said plates will be magnetically energized intermittently to withdraw magnetic particles from fluid passing their margins and, to release said particles intosaid cavity upon the intermittent cessation of the supply of electrical current.

3. The combination with a passage arranged to permit of a continuous flow of liquid and provided with a settling chamber, of a plurality of plates of magnetic material spaced in the direction of liquid travel through said passage with upper margins in the path of liquid flow therethrough and adapted to deliver material gravitationally to said chamber, an electrical winding about said passage adapted to be intermittently energized and adapted to produce a magnetic field including said plates with its center at a point remote from said upper M margins, whereby magnetiz'able particles in the liquid of said passage will be wholly withdrawn from said liquid when said winding is energized and a large portion of such particles willbe ultimately delivered to said chamber when said winding is de-energized.

4. A clarifying device for liquids, said de- -*"""vi'66"comprising a chamber, a set of elements 'within the chamber each having one margin elevated and so arranged as to permit liquid i-1:0 flow across their elevated margin, an means for creating a magnetic field embracing said chamber, and passing axially through all portions of said chamber. a

5. A clarifying device for liquids, said device comprising a chamber, a series of inclined elements within the chamber, each of said elements having one margin elevated,

. said elements being constructed of magnetic material, means for passing liquid to be clarified through said chamber and upwardly across the upper margins of said inclined elements, and means for magnetizing said elements,

6. A clarifying device for liquids, said de-, vice comprising a chamber, a series of inclined elements so disposed within the chamher as to permit liquid flow apross their upper margins, means for passing liquid to be A clarified through said chamber and upward- 1y, past the upper margin of said inclined elements, means for creating a magnetic fieldembracing said elements, and means for concentrating the intensity of said field adjacent the lowest portions of said elements.

55 7. A clarifying device for liquids, said device comprising a chamber, means for inducing a flow of liquid through said cham ber, spaced elements within said chamber having relatively quiet areas between them remote from the path of liquid flow through the chamber, and means for creating a magnetic field including said elements.

8. A clarifying device for liquids, said device comprising a chamber,. means for inducing a flow of liquid through the cham-' ber, spaced elements within said chamber having their margins exposed to the liquid flowing therethrough, an area between said elements being comparativel quiet and remote from the path of flow 0 liquid through the chamber, means for creating a magnetic field including said chamber, and means for concentrating the intensity of the magnetic field in the area remote from the main path of flow of the liquid. 7

9. A clarifying device for liquids, said device COIHPIlSlIlg a chamber, spaced elements constructed of magnetic material disposed within said chamber, means for passing liquid to be clarified through the chamber, and an exciting coil surrounding-said chamher for magnetizing said elements.

10. A clarifying device for liquids, said device comprising a chamber, a support of magnetizable metal centrally disposed therein, spaced elements of magnetizable material mounted upon said support and a conductor coiled about said chamber and adapted-when energized to create a magnetic'field including said chamber, the central support and spaced elements being so disposed as to constitute a. core for the coiled conductor.

11. A clarifying device for liquids, said device comprising a chamber having a portion rotected from currents or liquid flowing t rough the chamber, means for inducing a flow of liquid through the chamber, a series of spaced elementsof magnetizable material having their margins exposed to the flow of liquid within the chamber, a central support for said elements, said support being also of magnetizable material, and an electrical conductor so disposed that current carried thereby'will energize said coiland said elements.

12. A clarifyingdevice for liquids, said device comprising a chamber, an electrical winding exterior to said chamber, a supportof magnetic material centrally disposed therein, a series of spaced elements of magnetic material mounted upon the support, said support and said elements constituting a core for said winding, and means for draw, ing oil from the space between said elements matter there accumulating. 13. A clarifying device for liquids, said device com rising a eripherally grooved chamber 0 'substantia 1y circular cross-section, an electrical conductor wound within said groove and forming a coil "xterhar to a cock controlling the opening, means said chamber, a substantial mass of magnetic material centrally disposed within said chamber, a set of spaced elements of magnetic material symmetrically disposed about said mass of similar material, means for inducing a flow of liquid through said chamber and past the margins of said elements,

and means for drawing from between said elements material there accumulating.

14.. A clarifying device for liquids, said device comprising a two-part chamber of circular cross-section provided with an opening in its bottom and inlet and outlet ports, a cock controlling the opening, means for obstructing thecirculation of liquid throughout the portion'of said'chamber adjacent said opening, means for inducing a fiow of liquid upwardly through said chamber, a core of. magnetic material centrally disposed therein, a series of battle elements of magnetic material provided with openings in their bottom portions and vertically spaced Within said chamber in the path of liquid flow therethrough, the area available for liquid flow being limited about said elements, and means for creating a magnetic field including said chamber.

15. A clarifying device for liquids, said device comprising a two-partchamber of circular cross-section provided with an opening in its bottom and inlet and outlet ports,

obstructing the circulationof liquid'throughsaid opening, means for inducing a flow of.

liquid upwardly through said chamber, a

core of magnetic material centrally disposed -therein,'a series of bafll'e elements of magnetic material provided with openings in their bottom portions and vertically spaced Within said chamber in the path of liquid flow therethrough, the area available for liquid flow being limited about said elements, means for creating a magnetic field includ ing said chamber, and means for subjecting said chamber to vibration.

16. A device for removingimpurities in a circulatory lubricating system comprising a chamber adapted to be incorporated in said system, magnetizable bafile elements spaced within said chamber to form a series of pockets therein, the direction of flow of the lubricating mouth through said chamber being across the open mouths of the pocket and the area of said pockets being lower than the mouth, and means for subjecting said chamber to the influence of a magnetic field whereby said battle-elements are magnetized and tend to withdraw magnetizable foreign matter from thelubricating matter assing through said chamber, said pockets bein adapted to retain such matter irrespective o the continuance or discontinuance of the I magnetic field. for

ALBERT \L. RASEY.

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