USRE17272E - Pulsating jig - Google Patents

Description

M. J. LIDE PULSA'IING J'IG April 16, 1929.

Original Filed Oct. 18. 1920 5 Sheets-Sheet gnwnl'm- MRR-rm J. una

l @Hei n.14)

M. J. LIDE PULSATING J'IG April 16, 1929.

Re. l 7,2 7K2 Original Filed Oct. 18, 1920 5 Sheets-Sheet glwanl'ct MRR-VIN cT. LlDE.

Apri116,1929.\ M J1 MDE R.'17,272

` PULSATING` JIG Original Filed Oct. 18, 1920 5 Sheets-Sheet 4 gawanrox MRR-rm J. una

@nutmeg April i6, 1929.

M. J. LIDE PULSATING JIG original Filed oct. 18, 1920 5 sheets-sheet 3 ffiiJ 9mm-.haz

MHRTIN J. una

(Tamm) .f STATES Reissued Api'. 1,6, 19.29.k

l MABTIJ. lLinn BrRMINGHAMyALABAMA.

Peregrine .II-G. v

reissue filedl Obtener Si',

invention relate-estoal for" the separation of minerals of different` specificgravnties Which relies uponimpulses 'of Water to effect the separation and stratilic-atignn of the particles under treatment.

. One `distinctivefeature'oiniy inventionr is I theutiliiationof Jan elongated rotaryfor os'-,rv

j eilialtory valve j' substantially y (1o-'extensive j tlI'IS'VerSely of the screen?.v

with the gscreenjy and "thusyadp ted to deliver the-:Water impulse` with' j'substantial-k univ formity for the length or Width of the screen, faccordingto its arrangement lengthwise or A furtherleat-ure of` lnyinven'tion Ais the y ya'frrangement and synchronous .operation of such elongated inlet valves When disposed onopposite sidesofzthe seas to further increase the uniferniity of the effect of the4 impulses transversely aswell as lengthwise kof the screen.' y i j A further feature ofmy invention consists inthe application of meansf'or reducing the power required to pump. the Water into the` jigtominimum. y It can `loe' demonstrated .l that rfora given quantity of' water beine pumped intothe jig,y the power required Wil vary'inversely astlleV scpuare of thevalve opening, or. directly as ythe diin'erence inlje'lel-` l c'oudition ofminimu'in power consumption vation' `between the: 4.surface levels `in the ljig l tanks. and the Water tank supplyingit(rv Af wouldV tl'iereforefrequire along rectangular .valve opening rather. tlianvjfa-square or en1` cular opening. This conditionf .meet` by rr`I naliing Ia rectangular valve .opening substanf vtiallythe,lengt-h or Widthr of,thescreen."afs` previmisljT stated.v

f l Aiurther ob'ect of my invention isto sinisides,v according tothe typeywith Watertaiiks lthe means for producingzthe impulses andlfto-this endlflank the jig on oneorfb'oth in which pre iterniined'. head of Waters `lnaintained .andfroniwliic-h the Water is fed j f f in impulses to the tanlehy the rotating valve orfvalves. j

\ The distinctive eaturesjahove "described y vfor. producing the impulses are applicable to [various-types.ofjfigs and my invention com templates certain improved results obtained *with ay fixed `screen the' arrangement of ongside the fthe elfongated` impulse'valves` j, p

byktlieutilization ofza, single, 11n-` .f y isposed transversely across y the' impulse valves.

lar parts'throughout thedrayvings. `j j illustrated' 1n 1|`1gs- `1' and Q,

elongate d, j

` upper endfo'fthe jig tank' and thus directing tsnl'npu'lse's towards the discharge end of the' LA further'ieature of my invention is that j it lendsitself peculiarlyto jigso'f thetype employingtravelingscreens."Here the screen y issubmerged in'theftank with the'imp'uls'e valves disposed between the upper and lower tliflits of" the screen', and; ac`c rding"l tothe i-eiaivge` posities-0f the fea-i; gate, ineenn eliarg'echute fortlie lighter material-fand the ,direction of rotation. of the/screen', the apiparatusf Will function as* al concurrent' or' co'untercurrent v e j My invention vWill be betterunde'rstood in itsr various embodiments by` reference `to Vthe accompanyingdrawings, in' which l Figs. l and 2illust-ratefin plan' and vertical cross section a jig with a fixed screen and side j Figs. Sand 4f] are similar viewsofv `jig having aslngle limpulse valve ac'rosslthe upper end of the jigtank.`

Figs. 5 and `6y aresnni lar views-,0f ajjig,

with a moving 'screenarranged for concury rent new operation, While j v j j y V p `Figs. 7 and 8i' show a jig with a moving' viewtakenthrouglrFig@ 0.11481l j Similar reference 'numerals referv to I snnfi# jigltank l mounted'` on suitable supports@ andliankedxon each side byan elevated 'water tank provided near its bottom. with a port 4f, substantially coeXtensive.With the length of the jig .screen 5 andfof `the tank and normally closed by, an elongated'rotating or l oscillatiiiig butter-ily valve 46.- `',Vlliese poits Il arepreferably rectangular andare disposed in oppositiomas indicated in Fig- 9', andthe valves preferably rectangular are d'rivenjby the coal'or mineral to` treatedui'ider con-` trol of a feeder 1l 'and attlie discharge end "ofthe screeny I yprovvide y"aihottom outlet 12,

transverse central'ei-osaseeuemi i "sereen'arranged for counter-current flow op"` y y I'slioiv-l a j 1 gears TfwhichIneslrgearsfS cna common driving shaft 9.-v A top feed gate 1Qv delivers l e' delivering into a trough` 13 oontaining`l anA j endless conveyor 14 andan adjustable gate `15, operatedhyfhandl'es 16,r which controls the ioveriowfof* the lighterparticles rto the tained to an approximate predetermined level and when the shaft 9 is started, impulses of water, uniform for the lengthof the screen and directly from opposite sides, converge and flow upwardlywith practically uniform effect through the screen 5 and effect, in the manner well understood in the art,"the sepa'- ration or stratification, according to their specific gravity, and by virtue of the :flow of water over and across the top of the screen in conjunction if necessary with an inclination of the screen the material is caused to move lengthwise thereover, the heavier particles in the lower stratum passing to the trough 13 while the lighter particles in the upper stratum overfiow througlichute 1T with the surplus water, V'which in general practice will have the foreign matter in suspense therein settled out, after which it is returned to the tanks 3. 'The efficiency of the jig is due to the uniform distribution of the impulse throughout the cross-sectional area of the and to the simplicity of the operating mechanism which is confined to tlie'two rotating valves with the result that the apparatus has negligible maintenancecost and requires a minimum power for operation.

In Figs. 3 and 4, the mechanism is the same as described in connection with Figs. 1 and 2, except that asin'gle water tank 29 is provided at the upper end of the jig tank in placeof the side tanks 3 and th-e water impulses are delivered into the upper end of the jig tank 5 by the butter-fly valve21 working in` a flaring conduitV 22which extends `from side to side across the jig tank and has its Haring en ds projectinginto both the water tank and jig tank.` The water tank is closed over head by a sloping bottom 23 which delivers material to be treated to the feed gate 10, which in turn deliversv it to a Achute v241: which causes it to fall upon the upper end of the screeny bed. -The operation in thi's'arrangement is similar to thatdescribed', except that the water impulses are derived wholly through the single water inlet below the upper end of the screenand as the i mpulses are discharged with equal force transversely of the tank and-in the direction of the overflow, they facilitate the movement of the material on the screen. towards the dis-l charge.

-In Figs. 5 and 6, I show a arranged for concurrent flow of water and mineral utilizing a travelingscreen. I-Iere the jig tank 25 is elongated and at its end shas mounted sprocket wheels 26 which support and operate an endless chain screen 27 which is disposed substantially horizontal. These sprockets are driven by any suitable driving mechanism and cause the upper flight of the ywhich discharge into the jig tank between the upper and lower flights of the screen. rIhe material is fed to the` screen by the feedY gate 10 under control of the feeder lliand as the impulses of water enter and pass upwardly through the screen belt the material is separated'and it is caused to move towards the discharge end of the jig both by the mo Vtion of the screen and by the concurrent fiow of the water. This arrangement gives a very greatly increased output without materially complicating the mechanism;

vIn Figs. 7 and 8, I show a jig similar to that described inFigs. 51 and 6, exceptthat this design is changed for counter-current opveration,that is to say, for the outliow of water counter to the direction of movement of the heavier particles on the screen. Here thej ig tank 25 is flanked with'the water tanks 28 from which the water impulses are admitted to the ig tanky under control of valves 30 through conduits 29. The'sprockets 26 serve to drive the endless chain in a direction counter to that in Fig. 6, and the trough 13 and conveyor 14C are disposed at the left hand end of the tank while the feed gate 10, the overflow chute 17 and gate 15 are arranged at the other end of the tank, the chute 17 having a. downturned lip 32 which extends down close to the upper level of the traveling screen and serves to prevent any matter passing over the right hand sprocket 26. The operation in this arrangement is that the screen, as it moves, tends to carry with it the heavier particles towards the left and counter to the current of water fi'owing with the lighter particles towards the chute 17 at the right. In ofthis character, wherea large volume of water is supplied, with the impulses uniformly distributed, and relatively free of eddiesand whirls, a most rapid vand eective separation will take place and it will be found that the heavier particles are most effectively washed as they pass with the belt to `the left.

My invention'contemplates various other screen and substantially co-eXtensive with y the adjacent marginal edge of the screen, a.

valve tocontrol the admission ofthe Water supplyfto .the tankby pulsationsthrough said port, said valve *beingl (1o-extensive ,with the port, and separate juxtaposed outlets to conductoi the particles of `diii'erent; specific gravity after separationon the screen.

2. A jigglng mechanismcomprisingajig tank, ascreen-therein, a Water tank alongside -vthe sereenuhaving a narrow elongated sub1- stant'ially rectangular port connecting the i' y tanks below the screen and substantially ed` extensive `with the adjacent side of .the screen', a relatively narrow elongated .rot-at# able valve extendingl thev full length of said port, means lto operatesaid valve to admit pulsations or' Water through said port into` the jig tank, and means/at one end ofthe jig tank to conduct oit thepartieles of dirl'erent specificv gravity afterseparation on the i v screen.

- there being a port'substantial'ly `*co-extensive inlength with the jig screen which connects dimension permissible to conductthe volume '3. Ajigging mechanism comprising a jig tank, a screen therein, awater tankv alongside `the screen andsubstantially co-extensive 1n length With the adjacent side of the jig tank,

said tanksbelow 'the screen, which portfhas its vertical Width reduce'djto the minimum of Water required for av pulsation` underl a j given'head in the Water tank, a valve vsubstantially" co-extensive'y in length with `said port, and means to admit the vWater supply to i ther jig tank intermittently opening said j valve toadmit impulses of Water below the screen, and means to conduct avvayro'm/the same endof the jig onvthre screen. Y l ,i v 4. YA` ig comprisiiiga jig tank,. a screen, a

. `pair of Watertanks disposed on opposite sides tank separated rmaterial f ofthe screen tank and having'ports entering the Yjig tankbelovv .thefscreen` and extending substantially the length of the screen, 'valves co-extensive with said portsto admit pulsa-V tions of-water to` the jig; tank, and means to y conduct offfthe particles of 'different specific gravity after separation on the jig screen. f

whichthe opposing vvalves are ofthe rotatable y type ,and their operating meansy are co-ordi y natedand timed vto )admit simultaneous op-f f k,posingimpulses of'water alongfthe opposite sides ofthexjig tanki: t

' diierent j 31ge 5.,A jig inaccordancewith claim 4, in r different-speci@ gravity 1S Separated by' ythe 7 L A j igging mechanism accordingto claim [6, in which a pair ofwater tanks are provided on opposite sides-of the jig,'and opposite valves are operated to admitimpulses of Water from opposite sides of and substantially co-extensive with the screen,

8. In ajigging mechanismin'aeeordance with claimi, the provision of Watertanks on opposite sides of the jig'havingsupply ports elongated in the direction of travel of the screen, rotatable valvesfor lsaid ports, and co- .v y

ordinated 'and timed driving means to operate said valves to admit simultaneously opposed impulses o Water into the jig tank,

9. In ajigging mechanism, a jig tank, af

submerged 'endless screen having its upperl andloWer flights Within the tank and means to move' it continuously, mounted in the-tank,

aWater tank alongside the jigtank andhaving a narrow elongatedv port for admitting Water to thejig tank between upper vand j loWer flights of the screen, said port being in length substantially co-extensive' with `the elective separating portion of the upper;A

flight'of the screen, vvalve'means to admit impulses of Water through saidvport into the vjig tank, and discharge means for thegraded materials at one end of the screen. i

I l0.]nv a jigging mechanism, ajigtank, a screen there1n,'oppos1ng water mletsextend'- ing substantially the length kof the screen, and y i co-ordinated valve means to admit simultaj neously `opposed .pulsations or Water which vvare effective for substantiallyv the full length of the screen.

1l, A j`gcomprising a jig tank, moving i endlessscreen having both flights submerged in the Water in said tank, avvater tank adj acent tothe jig tank having a port entering the `jig tank lengthwise .of and below the s`eparating portion of the upper flight of the i screen, means yWithin the tank,`to movev and. i

support the screen valve means to deliver im#` ulses of Water 'throughsaid port into lthe jig tank, and means to conduct 0H particles of `12. 'A jig, comprising a jig vtank havinga screen therein, a: source of Water .supply specific gravity, as separated by thev alongside the jigtank',1a pluralityof opposed narrow` elongated `ports `for admitting Water stanti ally co-'eXtensive in length With a side of fromsaid source to Vsaid jig tank yand sub `-thejig screen, aplurality Aof valves substann tially (zo-extensive with saidy ports andadaptf e edto control theiiovv orWater'therethrough,

'and means'to operate said valvesin unison to admit `Water impulses simultaneously the level ofitsscreen. f t

Intestimony whereof Iatfix my signature1 Mamme. Linn` y through said ports into jig tank below e

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