US887841A - Centrifugal separator. - Google Patents

Description

PATENTED MAY 19, 1908.

' P. F. PEGK.

GENTRIFUGAL SBPARATOR.

lAPPLIATION EILED TUNE 3. 1907.

' zen of the United States, residing at Chicago,

PHILIP F. PECK, OF CHICAGO, ILLINOIS.

l cnn'rnrrucan snrnnaron.

speeicauon'nf Letters Patent.

Patented May 19, 1.908.

Application llled June 3, 1907. Serial No. 376,941.

To all 'whom rMuay concern: I

Be it' known that I, PHILIP F, PEOK, a citiin thecounty of Cook and State of Illinois, have invented certain new and useful Improvements in Centrifugal Separatorsf of which the followin is a specification.

My invention re ates more particularly to centrifugal se arators for the separation of ores, or similar materials, of dierent de grees of specific avity while in a pulverized state and mixed with water, of the class having a rotatable portion or vessel with a separatin surface on its inner wall and a differentia ly rotatable longitudinally-travelable inner deflector or core-l-the two to ether.

. forming'a se arating channel varia le in size, and whic se arator in its operation alternately. accumulates a charge or load of concentrates and middlings and then discharges them; and my invention consists in the features, details and combinations of construction and in the association of parts hereinafter described and claimed. v

In the accompanying drawings-Figure 1 is chiefly a vertical central longitudinacross sectionofin separator, showing, however, a art of the eector and some other portions in side elevation. 2 is a top plan viewreduced in -siae--of the treatment vessel belowthe u per ournal box, showing the loca- A tion of t e several annular feedchambers,

sel and some other` parts, similar to those illustrated in Fig. 1, with the exception that the means for holding certain internal parts to place in the Vvessel are modified. In this gure there is also indicated in dotted lines the drawn'or traveled out position of the delector Fig. 5 is an enlarged to plan detail,` taken on line'B B of Fig. 1 looliing in the direction of the arrows, showing the relative position of the forked end of the lever under the separate and associated parts.

In making my improved centrifugal ore se arator, I provlde a rotatable'portin 2, W ch'I term a .treatment vessel,vhav1ng preferablya smooth interior circumferential Wall lforming a separating surface 3. l I prfer to have this treatment vessel in the form or of the nature of a strong frusto 'conethe separator.

shaped metal tube or tapering` shell, and to 'locate it in a vertical position, as shown in the drawings. It may be made of one or more pieces, and need not be in the form of a vessel, as the term is usually applied, but should be -ofa nature, when the separator is assembled and in operation, to maintain the separating surface 1n a submerged state, and ot erwise to subserve the purpose for which it is intended.

The treatment vessel is-provided with or formed in art of heads or ends/4 and 5,' having centra hollow hubs 'or trunnions 6 and 7,

lrespectively. I also provide a substantial said hubs, around shaft 8 extending through which they are rotata ly iournaled, thus affording bearin s for lateral support of the treatment vesse. This shaft, .1n turn, is

' laterally supported by suitable journalboxes Q'and 10, the top of one of whichis attached to a casting 11 above the upper hub, which casting is supported by'columns 12 that are securely mounted on the base housing 13 of The lower journal box 10 engages the shaft below the lower hub, 'and is secured to the v base housing, as shown. The shaft is mounted in its journal boxes 9 and 10 in a manner ada ted to be slid or traveled longitudinally, as t esired, and is made long enough to extend through such boxes sufliciently-as shown in Fig. 1to permit of 'a desired extent of longitudinal travel. It is stepped at yits lower end in a suitable box 14, preferably of an anti-friction character, in a manner to 4substantially maintain it therein against relative longitudinal movement .to the box either u or down, so that, by the movement of this ox, the shaft will be forced with'it either up or down as the box may be moved.

This box 14 is pivotall7 attached throughv links 15 to the forked end of the lever 16, as

shown in Figs. 1 and 5, which lever is fulcrumed at 17 to the base housing. of the separater. The opposite end of the lever is se- `which is securely and rotatably mounted in suitable journal boxes 21.

To the rod 20, between its journal boxes, l

is rigidly attached a worm wheel 22, for rotating the rod. This worm wheel' contacts at its hubs with the inner end of the journal boxes, thus. maintaining the rod against;

longitudinal travel.

lio

Mesliing with the teethon' the worm Wheel is a Worm 23 carried ahd`lotated by an adequate', suitably journaled shai't 24, which may be rotated in either one direction or the' '5 other by loosely mounted clutch pulleys 25 and 26. These pulleys may be rdriven in" opposite directions by belts-not shownrunnin in such manner that the movement 'of the ever 27 brings the clutch 28 into engagement with either one or the other ot'the said ulleys,l and thereby revolves the threaed rod in the direction desired, thus forcing the nutt19 up' Aor down and rocking the lever 16 correspondingly and eiiec'ting a desired longitudinal movement or travel of the shaft 8 and the de'llector.'

`The base housing .ofthe separator is pro- -'vided with two spn'ally inclined troughs or ' compartments 29 and 30, as shown in Fig. l,

20 terminating in a two-compartment spout 3l,

"- which serves to catch'the water and material Adischarged from the treatment vessel and flow them from the separator.

The weight ofthe treatment vessel is prei` erably carried by a roller bearing 32,;'011 which the lower end of the hub 7 isA seated, the bearing being mounted on the upper-.end

of the journal box 10. i

` 'Ehe lower'end of the vessel is,pret`erably,

'30- somewhat enlarged danietrically fora cornparatively short distance of its length, as

'- Ishown in Fi'g. 1, making an internal annular recess or chamber 38. This chamber communicates with a row of nipples 34, threaded '35 through the Wall oi the vessel around-the outer vcircumference of the enlargement, which nipples are provided with small holes 'or openings 35 for the'discharge of material v.and water from the vessel. l/Vithin the rc? '140 cess or chamber formed by said enlargement Of the vessel 'I prefer to provide a suitabl'f' shaped ring 36, containing a series oi tu mieli# shaped depressions or pockets with lar c .openings nearest the axis, and outwardy '45. converging to small o enings :ee'iste'ring lwith the discharge ni )pl es 34, as s vown in "Fig 1. The object o this enlargement and, lthe charnbered ring is to facilitate the discharge of material and water and to prevent 5 0 undue lodgment of parts of said material at thipvpoint. I ithin the treatment vessel and to operate in conjunction with it and its separating surface and form with such vessel a separating l5,5 or concentrating channel 37. 1 provide a differentially rotatable longitudinally-travelable cone or core 38, which i will call a deflector. This ,deflecton as will be seen, preferably 'forms the .inner wall of the 'said separating, o'channel. p 1 f The u per end or head of the delector 39 is '.pieerab yin the nature of a plate, of desired size and irregular form, as illustrated. 1t is Wellsecured at its outer circumferential por- .vided with suitable valves or stop coclrs 44.-, `which may be used to stop the low' of water l central part.

.a comparatively iiat ring, andI has a the separator is in a quiescent state.

e; tion 4in any suitable wayeas by tap-boltsto that end of the deilector wall, and at its central portion has a substantial hub 40,' iixedly engaging the shaft 8, as shown in the drawings. i is depressed inward-as shown in Fig. 1 9 am desired distance and for a suitable diameter said depression having preferably a depth somewhat greater than the distance of longitudinal travel of the deflector. lAround the upper outer circumferential edge of and within this depression I provide a ring 41, extendingsutliciently/in over the depression to form an annular water chamber withinthe depression. l prefer vthat the ring 41 should at its inner bore be ilanged vlor extend upward a desired distance above the upper surface of the head to prevent water introduced into the separator for other purposes from flowing into the depression. f

The chamber in the depression of the upper vhead has a desired number of water pipes 42 communicating with it, which extend ydown into the deiiector a desired distance, asv

illustrated, and preferably have several branch pipes 43 connected to them, 'which 90 are secured in appropriate holes or passages 43 through the wall of the deflector, opening into the separating channel. In this lway Water can be yHowed or forced under the im'- pulse of centrifugal-enemy, frorn'the de ression in the upper head ot the deflector, own through the said pipes, and out through the 4'lower portion of the circumferential lwall of the deilector into the separating channel.

' The several pipes 43 are preferably pro-100 through any desired pre-determined or particular ones of these pipes, enablingthe water to` be delivered into the separatin r channel at the desired and pre-determined distance from the lower end of the separating surface,

for removal of iniddlings, as hereinafter described, thereby governing the longitudinal extent or distance on the lowerl end. of the separating surface, from which said mid` dlings will be separately removed and discharged from the separator.

he lower end of the deiiector is provided with a head 45, more or less open toward its lt has its outer circumferential portion, for a suilicient distance toward the center, preferably inadelin the nature pf su` stantial hub at its central portion, the hub and ring portions being solidly connected by spokes, leaving' a sui'licientspace between t em so that in a large separator the operator can enter into the deflector, if desired, when '125 The ring'portion of this lower head at its outer circumferential portionis securely fastened to the lower end of the Wall of the dellector, and its hub portion is elevated or raised upward suihciently above the ring por- This head, near its central part, y

sanear tion lto make desired room for other partel of i the separator around this zone, as illustrated.

,The hubs of the up er and lower heads of theA deiiector are rigid y secured to the shaft 8, so that they hold the deilector in suitable "relative positionsl in the treatment vessel,

- or chamber 33 inthe enlargement at the dis-v and not only rotate the deector with the' shaft, but travel it longitudinally with said shaft when theshaft is so traveled, as hereinabove explained.

The circumferential wall of thedeflector is preferably made of amply strong but comparatively-thin metal, similar to the wall of the treatment vessel. It serves best when made of length to extend over substantially all of the separating 'surface while in a ositionfnearest the feed or small end o the treatment vessel, and -thenalso to extend' a short distance beyond or below the op osite end of such surface, yet leaving room or its longitudinal travel, a distance substantially equivalent-to the width of the enlargement charge end of the vessel, thereby insuring tire length of the separatingsurface.

- shape to su that the deilector at all times covers the en- The outer circumferential walls of the deflector are, referably, made smooth and of lgstantially conform to the shape or contour of the se arating surface, but somewhat smaller in iameter, so that when ,the deflector is in position nearest the small or feed end of the treatment vessel there will bev a comparatively'small annular space or i unoccupied space in said smallor feed end,

which permits a partof the unseparated material, as it is introduced, to lodge or pile u in this unoccupied part of the vessel, whic condition is very objectionable because such oro unseparated roduct,wh'en the concentrates are periodica ly removed during the/cycle of operation, is also removed and commingledl with the concentrates, rendering. themof lower gradeand increasing theirquantity, and consequent cost of' smelting or other subsequent treatment. ATo. overcome this difficulty l have provided a feed chamber or passage 46', of constant size, located in a position radially outside (if the small e'nd'of the deflector, and preferab y extending from the feed end of the `vessel a somewhat greater distance than the extent or distance of lon itudinal travel of the deflector, vso that t e small end of the deflector will at no time be so great a distance from the feed end of the vessel as is the delivery end of said feed channel, throu h which material for separation passes be ore it reaches the separating channel, and the separating surface is formed.

in part by the travelable deflector. ln this Way the small end'of the deflector is referably at all times, to a greater or less egree,

- in a telescoping statewith the said feed channel and the dparts forminor it. l preferably form this fee channel, as iustrated 1n Fig. 1

.of the drawings, by em loying a part 46, somewhat in the nature o a comparativelyshallow secondary vessel with an open bottom and' with a suitably sized hole in its top, and

having theborder portion around said hole or opening suitab y swaged outward, as illustrated, `to serve as means by which this secondary vessel ortion maybe secured by bolts, or 1n other esired and suitable way, to the linside of the upper head of the treatment vessel--as illustrated inFig. l-and at the same timeto hold 'the bottom of the seeondary vessel portion sufficiently away from the head to form a radial space or channel 47 between them, communicating with the feed channel 48. The circumferential wall of this secondary vessel is preferably ofthe form of the wall of the treatment vessel and sufliciently smaller in diameter than the corresponding part` of such wall, when the seconc arv vessel is 'secured in'place, to form the said c annel between the outer eircumferenfeed channel shall not be of greater diameter than that of the adjacent or connecting part of the separating surface, so that the material in flowing from this channel into the separating channel or on the separating surface, within the separating channel, will not be forced to move towards the axis of rotation against the action of centrifugal force.

ln my preferred arrangement l approprie.

ately form the feed end of the eeflector smaller than its other` parts, as shown, to telesco le with slight clearance inside of the-secon ary vessel 46, and from the fact that the secondary vessel forming the inner wall of the feed channel 48 is longer than the extent of longitudinal travel of the deilector, the latter is at all times to a. greater or less degree telescoped into the secondary vessel,` .so that material fed linto the separator down through the feed channel 48. and into the separating channel 37 has little tendency, eXce t dirty water, to flow back vtowards the fee end'v of the vessel into the unoccupied'space caused by the travel ofthe deflector. As means for s', preventing the baclrward'iiow of said dirty water in this space, and the resultant precipitation and deposit hereof some ofthe so id matter that said water contains, l provide .a suitable annular clear water-receiving chamber 49, located on the top head or end of the vessel, and provide a means of supply- 'ing clear water to it, as by an appropriate pipe 50, and l also provide holes or channels 51 from said chainoer, communicating 'with the space in the vessel between its feed end and the small end of the' deflector,l and during operation clean water can be introduced 4matter from flowing up into, or baci; into this unoccupied space between the feed end of the vessel and that end of the dellector. The supply of this clean water niay be from a lsufficiently elevated tank or other suitable source to enable it to flow by gravity into the chamber 49 and its volume dr quantity lmay be governed by'any suitable means, as

a valve 52, which 'may be located .in the pipe 50.

To enable the vintroduiction or feed of niaterial into the separator, V.l form or provide a suitably shaped, properly located annular 'chamber 53 on the upper head of the treatment vessel, with holes or passages o4 err.- tendingfromit down into thc space 47, to ass into the feed channel 48. l also provide acilitj/,as a suitably shaped feed casting 55, registering with the annular opening in the upper side of the chamber 5.3; and lf connect said feed casting to a suitable feed prie 56, which communicates with any suitable source of supply of properly coininingled water and material for separation. The ilow of the said comminglcd water and material maybe governed by a valve 57, which may be laced in the feed pipe. in this feed pipe l a so preferably connect a branch. pipe 58 for sup )ly of clean water when the flow of materiali for separation temporarily discontinued and it is desired to remove accumulated concentrates;

On the upper head of the treatment vessel, nearer the axis than either the chamber 4Q or 53, ll provide `an annular water-receiving chamber 59, suitably located to supply water,

when desired, doivn into the depression 'in the u per head of the defiector. From. this chamber 59 l provide holes or channels. 60 through the upper head of the treatment vessel, located. in positionto deliver water down intothe depending ring or flange 6i., which is of size and in position to telescope down into the depression in the upper head of the deiiector and deliverwater trom. the

sensei holes 60 into said depression, from-Which said water flows, actuated by ravity-and centrifugal force, down through liliepipes 42,` and through the predetermined ones of .the pipes 43, depending upon which of said .pipes nas its stop cocks or valves 44 open,and

effects removal of middlings to the extent l desired.

The depending part or flange 61, "like the part 46, is somewhat lon er than the extent of longitudinal travel of t e deiiector, so that at all times. it is telescoped to a greater-or less extent into the depression in the upper head of the' deflector, and so that water will be properly delivered by it into said ldepression.

i supply water to the chamber 59, in the l upper head of the deilector, by means of a 'fixed pipe 62 with a suitably shaped end to make delivery into the annular o ening in the upper side of this chamber, as il iistrated. The flow in this pipe can be from any suit-l able source of supply and can be governed by a suitable valve 63, that may be placed` in the pipe.A This clean Water is for use only' when it is desired to remove mlddlin s, at which time the flow or introduction o teria] for separation is discontinued.

ln Fig. 4 have-shown in enlarged detail'a part ofthe feed end ofthe treatment vessel and deflec'tor, and some other' parts, illusthe means of holding to place Ithe 64 engaging said flanged or swaged .portion around the opening in the bottom of said secondary vessel. This ring iitssufficiehtly/ tight to maintain the secondary vessel in place, but at the ysaine time to permitvof its rotary movement with respect to the treatnient vessel. This rotary movement is more or less effected by the impact or resistance' of material and water to assume faster rotation as it is introduced into the space 47, between the top end of the secondary vessel portion. 46, and the head of the treatment vessel 'so that said secondary vessel portion in that way is revolved differentially to the treatmen t vessel and the deiiector.

lnFi-g. 4 l haverl also shown in dotted lines the deflector in position drawn to its fullest vessel, at which time it will be seen that it. is

in its minimum telesco ed state with the,`

secondary lvessel 46, an is also in position to leave the greatest amount of unoccupied vtion the heavier, lricher, or cleaner, parts of the concentrates will lodge and .accumulate nearer the feed end 'of the se arating surface,

and the lmiddlings, oru less' c early separated vextent from the feed -end of the treatment parts, willlodge and accumulate nearer .the -4 discharge end of'theiconcentrating surface, which is `throughout the arearadiallycov:

iso

ceneri' 43 in their differential rotation to the se al'rating' surface through the Walliof the vde ecvao' . reducing the separating-channel to tor into vthe separatmg channel.

In operation, the treatment vessel is revol'ved at the'desired speed by use of a belt that may be operated around its belt surface 65- 'Fig. 1and the defiector is also revolved' by use of a belt that may be operated around its pulley 66,. but at a desired differential speed to that ofthe treatment vessel. l

Initially thedeflector is "noved up in the .vessel to its fullest extent, or to the small end of the vessel by its supporting shaft, thereby proper size for. commencement of concentratlon or separation, `and theseparating period may commence. The material to be se arated While in a finely pulverized state an mixed i with the desired amount of water to make it fioW freely is then fed into the separator in quantities to fill the se arating channel and provide a sufficient bo y of water Within the' vessel, preferably frornafsuitably elevated .agitator tank (not shown) through its branch the feedipe 56, and passes into the treatmen-t vesse and separating channel throu h the agencies hereinabove described, t 1e heavier parts, or the concentrates, lodging on theseparating surface and being retains there 1n the separating channel` nearer the l feed end {while the lighter, or waste vpart and `sired.

the middlings are forced or driven along by the water within the separating channel, the formerto discharge and the latter to lodgment toward or nearer the discharge end of the separating surface. The washing or scouring action of the water which effects separation in the separating channel is princip'ally governed by the amount of .differential rotation between the treatment vessel and the deiector, which is during concentration adjusted properly towash ofi` and more the Ilighter lparts along to discha e, but yet to permit t e heavier parts to lo ge and accumulate on the separating surface, as de- As the operation roceeds and the accumulation or accretion orms in the channel, the latter would soon become too much contracted or filled, if there were no compcnsating agency; and to meet this require- -ment during the concentrating or se arating fullest extent toward the largerend of the vessel, the feed of material for separation is discontinued. The speed `of the vessel is preferably reduced as desired. The valve in the clean water supply pi e 62 is opened, and such water is iiowed own' or is driven through the agencies hereinabove described down into the pipes 42 and through their passages in the deflector-wall into the lower portion or middlings zone of the separating channel, by which means middlings are first removed and discharged from the separator. This accomplished, clean water is introduced from the branch pipe 58, and the defiector, through the reverse endwise travel of its shaft, is again moved orA traveled up to its initial position in the small end of the treatment vessel. rIhe deflector during such up- Wardtravel, assisted-by the Water being in-l troduce'd, removes to discharge the accumulated concentrates, .or most of'them. Theremainder soon follows before the s eed of the treatment vessel is incre'ased. T e supplly of Water by the pi e should be stopped uring unloading of mi dlings.

After the removal of concentrates has been accomplished, the deflector then having reached its initial osition, the vessel is again raised to its speed) ap ropriate for effecting Lconcentration, and t e separator is then :again ready for feed of material for treat` ment. Y

In the specification and claims Where I have stated that the length or distance of a i part is substantially as great as the distance I of longitudinal travel of the deiiector, I do not mean to limit such distance to the dis- ,I tance of travel of the deflector, as the former distance may, without bad result, be considf erably greater than thc distance of longitudinal travel of the defiector.

What I regard as new and desire to secure by Letters Patent is:

1. In a centrifugal ore separator, the combination of a rotatable-vessel having a separating surface, a differentially rotatable'longitudmally travelable deilector forming one wall of a se arating channel interposed between said' eflector and surface, the vessel being provided with a lnaterial feed passage communicating with the separating channel a distance from the feed end of the vessel substantially as great as the distance of longitudinal travel of the deiiector, having its inner Walla less distance from the axis than that of the adjacent part of theseparating surface, and means for feeding material for separation into said feed passages.

2. In a centrifugal ore separator, the com l a distarice from the feed en substantially as great as the distance of longitudinal travel of the deflector, having its inner wall a less distance from the axis than that of the adjacent part of the separating surface, the deflector in part forming a water 'passage at the circumferentialv portion of its small end communicating from between t-he small end of the deflector and the small end of the vessel to the separating channel, means for introducing water into the vessel between the small end of the deflector and the small end of the vessel, and means for introducing material into the material feed passage:

3. ln a centrifugal ore separator, the combination of a rotatable vessel having a separating surface, a differentially rotatable longitudinally travelable deflector with a channel .interposed between said 'dellector l and surface, a portion within the small end of the vesselv forming part of a feed passage in substantially extended` alinement with sain separating channel and communicating therewith a distance from'the small end of the vessel substantially as great as the distance of longitudinal travel of the deflector, the small end of said deflector adapted te telesco )e Within said portion in the small end of the vessel, the two forming a passage between them commu nicating from between the small end of the deflector and the small end of ythe vessel and the separating channel, means for introducing Water between the small end of the vessel and the small end of the detlector,

. and means for introducing material for separation into the material feed passage.

4. In a centrifugal ore separator, the combination of a rotatable vessel having a separating surface and an enlarged portion of desired'length at its discharge end, a differentially rotatable longitudinally travelable derlector in said vessel forming onewallof a separating channel interposed between said deiector and the se arating surface, aportion within the smal end of the vessel form ing one wall of a feed passage substantially in extended alineinent with said separating channel and communicating therewith a distance from the snall end of the vessel substantially as great as the distance of longitudinal travel 'of the deflector, the small lend of y said defiector'adapted to telesco e within lsaid portion vin the small end of t e vessel,

ssc/,sai-

`bination of a rotatable vessel having a separating surface, a differentially rotatable vl ongi-n tudinally travelable deflectorsaid deflector and vessel forming a 'separating channel in-y terposed between them, material feed means4 j adapted to have the small end of said rde-l Hector telescope into part thereof and adapted to deliver said` material into,the separating channel-a distance from thefeed end of the vessel substantially as great a distance the distance of longitudinal travel of the defleetor, the telescoping l'part of the deflect-or and said feedmeans having a. passage between themfrom thesmall e1 of the vessel to the separating channel, a'nd means for introducing water into the small end. of the vessel.

6. ln a centrifugal'ore separator, the com bination of a rotatable vessel having a Serfarating surface, a differentially rotatable longi tudinally travelable deflector forming one wall of a separating channel interposedbetween it and said surface, material feed means adapted to have the small end of thes defleetor telescope into art thereof and adapted to deliver materia into the separat-` ing channelsN distance from the feed end of the vessel substantially as""great as the dis'- tance of longitudinal travel of the deilector,

the telescoping part of the deflector and said feed means having a passage between tl'ieni' from the small end of the vessel* to the separating channel, means for supplying material into said feed meansJ and for supplying water into the small end of the vessel irrespective of said feed means" and for removing middlings separately through the instrumentality of Water from a predetermined desired part of the separating surface.

7. In 'a centrifugal ore separator, the com'- hinaticn of a rotatable vesesl having a sepan` rating surface, a differentially rotatable longi# tudinally travelable'defleetor forming one wail of a separating channel interposed between said defleetor and" surface, a portion' Within the .feed end of the vessel forming in part a material feed passagecommunicating' with the separating channel a distance from the feed end of the vessel substantially as great as the distance of longitudinal'travel of the deector7 the small end of the deflector being adapted to'telescope with said.

ee'aafii of the deiector, said deflector being of length to at all times extend over substantially all of the separating surface and have its small end telescoping into said portion in the vessel, forming a passage for ilow of Water p from the small end of the vessel around said telescoping end of the dellector to the separating channel, means for introducing material for separation to said feed passage,

and means for introducing Water between the small end of the Vessel and the small end of the dello/eter.

9. In a centrifugal ore separator, the combination of a rotatable vessel having a se arating surface and an enlarged longitudina ly extended )ortion at its discharge end, a dilferentlally rotatable longitudinall travelable dollector of length to at al times cover substantially all'of the separating surface and adapted to form one Wall of a separating channel adjacent to said separating surface, a portion Within the small end of the vessel forming one wall of a material feed passage adapted to deliver material to the separating channel a distance from the feed end of the vessel substantially as great as `the distance of longi tudinal travelof the deiector, the small end of the deflector being adapted to telescope into the said portion in the vessel leaving a passage circumferentially around said end of the deiector communicating from the small end of the vessel tothe separating channel, means for introducing material for separation into the material feed channel, and means for introduction of Water between the small end of the deliector and the small end of the Vessel. l

PHILIP F. PECK. Witnessesz- MELINDA PECK, W. H; PEcK.

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