USRE10591E - Middlings-purifier - Google Patents

Description

2 sheets-'sheet 2. I'. PRINZ. Assignor of one-fourth to J. K. 611111116.

MIDDLINGS PURIFIER.,

'1110. 10,591. Reissued Apr. 28. 1885.

WIRE CLOTH COTTON WRE CLOTH UNITED STATES PATENT OFFICE.

FAUsTIN PRINZ, F MILwAUxE'awIsooNsIN, AssIeNoE oFl ONEFOUETH To JosEF xcEHEIG, oF DUNDAs, MINNESOTA.

MlDDLlNGS-PURIFIER.-

SPECIFICATION forming part of eissued Letters Patent No. 10,591. dated April 28, 1885.

Original No. 272,475, dated February 20, 1883. Application for reissue filed March 1S, 1885; i

To aZZ whom, it may concern:

Be it known that I, FAUsTIN PRINZ, a subject of the Emperor of Germany, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Middlings-Purifiers, of which the following is a specification,

reference being had therein to the accompanying drawings.

Io My invention relates to middlings-puriliers;

cross-section enlarged illustrating themen- 2 5 ner of forming the dust-catching diaphragm; Fig. 7, a side elevation and plan view enlarged of a portion of the hoppers oftheshaker-frame, showing the manner of scouring and stretching the cloth bottom thereon; Fig. 8, enlarged 3o end sections of three ofthe zigzag chutes, illustrating the manner in which the middlings pass through them.

A is the casing or frame, in which a second frame, B, is mounted upon springs a a', and

adapted to bemoved back and forth by an eccentric, G, and connecting-rod C. Across this frame B, a short distance below the top, are

plates or sections b b2 L b4 b5 b 117, with theI edges next each other armed with sharp metal 4o knives or plates c, so arranged that when the sections b are placed on the same plane the knife-edges will be iirrcontact and completely close the joint-s between them. The first section, b', will be stationary, while the second section, b2, will be stationary at the end next the section b3, and adjustable by set-screws d at the end next the section vb, so that the knifeedges may be separated slightly, as shown in Figs. 1 and 4. The end of the third section,

5o b3, next the second section, b2, will be adj ustable by a set-screw, d, like section b2, while the other end next the section b will be stationary, and so on throughout the whole number,

so that the knife-edge joints between the secv tions may be adjusted as shown, the object to be hereinafter explained. Beneaththe first two sections, b b, an inclined spout or hopper, D', is arranged and provided with an outlet, e', while a similar hopper, D2, ,with an ont-4 let, e2, is arranged beneath the sections b3 and 60 b4, and a third hopper, D3, is similarly arranged beneath sections b5 b, and a fourth hopper, D4, with an outlet, c,v being arrangedback of the section b7 for the tailings. Each of the sections b will be made of`wooden or metal plates, and covered with bolting-cloth vor similar substance glued fast thereto to give it a rough surface to cause the chop to travel over the surface more' readily.

Above theshaker-frame'B,atsuitablepoi nts, 70 narrow spouts E are larranged, any desired number being used, but only two being shown in thepresentinstance. Thesespoutsaremade the full width of the shaker-frame at the bottom, but are inclined inward toward their tops E. They run up forabout one-half the distance. between theshaker-frame B and the top of the casing A, and have exit into an air-chamber,

F. The lower part of this air-chest is formed into pockets or hoppers G, to receive the bran v8o and dust andconvey it from the machine.

H is a fan to form a suction in the air-chamber F and through the spouts E.

I is the feed-hopper, provided with an adjustable valve, g, whereby the feed may be regulated, and ending in a flaring spout, I', whose lower edge extends the full width ot' the shaker-frame and terminates above it,nea`r the front end of the first section, b. On the inside of this flaring spout l inclined ribs or 9o blades h are arranged (see Fig. 5) by set-screws, so that they may be adj us'ted,land with their upper points terminating at equal distances apart beneath the hopper l, while their lower ends spread out at equal distances apart along 9 5 the ilaring edge, so that the falling chop77 from the hopper will be caught by theribs h and spread evenly upon the full width of the shaker-frame.

J is a dust-catching screen between the fan Io;

e Y 10,5e1

H and the air-chamber F, formed of unwoven cotton in the form of batting or sheets supported by coarse-mashed wire-cloth. This allows the air to pass freely through it, but catches and retains all dust and chaff.

, A knocker or hammer, t, will be arranged to be operated by a trip, t', connected to the operating mechanism of the machine, as show-n in the direction that thedust is carried, so 2o that the jar that detaches the dust from the collector moves the cloth or collector away from the dust and not toward it, whereby a better separation of thedust from the collector is effected. Vhen the blow is in the other 2 5 direction, or against the air-current, the dust is driven into the meshes of the collector, the separation is more difficult, and the closing of the meshes more rapid. i

Across the machine, beneath cach of the 3o outlets e ci, Snc., V-shaped troughs 7c lc2 are arranged and provided with `narrow slits at their bot-toms, through which the middlings escape.

Beneath the right side of the trough k' and the left side ofthe trough It?, and running parallelt with them, rows of inclined slats or chutes m are arranged at equal distances apart and of any desired number, five being shown.

A short distance from the lower edges of the 4o slats m angular or prismatic slats or bars n are arranged with their upper surfaces par` allel with and in a line beneath the left side of the trough k' and the right side of the trough k2, the two series of slats thus forming troughs similar to the troughs k' lc".

L L2 are two partitionsbet ween the two s ets of troughs m 11 and connected toeach other by a hopper, K, at the bottom, 'These pari titions are pierced at equal distances apart 5o opposite every other one of the sets of troughs m n, and provided with adjustable valves p and inclined projecting chutes r,running down toward and nearly to every other one of the angular slats n. Above each of the angular slats u small sharp-edged wings or dividers t are pivoted,

and extending upward about'twothirds (i) of the distance between the slats n, and made adjustable by meansof arms t', connected to 6o a rod, t2, outside the frame-work, as shown in Figs. land 2. The upper edges of these dividers t are below the levels of the upper ed ges of shelves or chutes m. Onopposte sides of the casing A, inthe 6s center between theV partitions L L2, fans M" are arranged, adapted to draw the air inward through the spaces between theV chutes m n and wingst, as shown, and discharge it out Between the partitions-L L2 and fans M walls N of the dust-catching screens (shown in Fig. 6) are arranged and provided with knockers i3 t, operated by trips 51's through rods 'il on the outside of the casing, the sets of hammers t 3 i* being tripped by one -operation. These walls Nwill converge at the bottom and be connected to a cross-bar, N', provided with a spring, u, to keep them stretched ,and'to prevent sagging.

Beneath the lioppers D D2 a similar system of troughs, k m n, and fans and dust-catchers N, are arranged, Fig. l representing the exterior oi'A one set and the interior-ofthe other, or any desired additional number may be nsedl The operation of the apparatus is as follows: The chop being` fed in an even strearn` upon the first section, b', ofthe shaker-frame B,is caused to travel downward toward the tailhopper D4 in a thin even sheet over every part of the surface of the sections. Thisagitation causes the light particles of bran, Snc.,

to rise to the surface, while the-smaller particles of fine middlings and dust are precipitated to the bottom, the intermediate space being occupied by the coarse middlings. Thus the mass'is automatically arranged in three v regular layers,varying in thickness according to the condition of the chop. It will also be observed that the first section, b is somewhat 1 longer than the others, to give time for a partial separation into the layers before the mass reaches the rst knifeedged joint c, so that a quantity oftheiine middlings will be precipitated down next the section b before it reaches the first joint c. At this point the adjustable' knife-edge c on the second section, `b2,wil`l be so set that the joint will be opened just the thick? ness, or a trifle less than the thickness, of the lower layer of I inemiddlings, so that when the mass passes overthe joint the lower layer will becut oif and carried down into the hopper D,while the coarse middlings and bran only will pass over, and then by the timethesecond joint is reached another layer of fine middlings will have been precipitated and will be cnt off and carried down into the same hopper, and so on throughout the whole number of sections. When the mass reaches the first spout E, the suction will gather the bran up into a ridge beneath it, and when it has nearly or quite choked tlc spout the whole will be carried up and blown into the dust-chamber F,where, theair having less power over each individual particle, the heavy dust and bran will4 fall into the pockets G,while the fine dust only will be carried against the diaphragm J,

where it will be caught and held until knocked .loose by the hammer i, as before described. Should any of the bran escape the rst suctionspout E, it will be caught by the second one.

into layers, the line particles'would be blown in contact with the coarse particles, and a perfect separation prevented. In the meantime 7o the current of air, with thefner middlings and dust, having entered the larger space between the partitions L L2 and the slats n, the air will have less eii'ect upon the individual particles; hence the heavier middlings will 75 ilallwdown into the hoppers P through the ,spaces between-theslats.. r and rear Sides o the angular slats n, `leaving only the fine dust to be carried through the valves p into the hopper K. 8o As before described, when the middlings are passing downward through the zigzag course the finer particles are next the suction-fan; hence it will not be necessary for the air-current to carry them' through the mass, but to 85 simply pick them olf, thus greatly facilitating the action and preventing the possibility of the currentcarrying with it any of the' good middlings. This isa very important point in my invention. 9o

rlhe spaces between the slats n and m and r are very narrow, being just as small as it is possible to make them and permit the iiow oi" middlings, so that none of the currents of air can pass up through them; hence the separa 95 tion is conducted entirely while the middlings are .falling 4from one set'of inclines to another, and are separated into the two layers of coarse- 'andine middlings,..as.beforedescribed.;...Ausw; t Y other great advantage of this arrangement is roo The inner sides of the troughs k 2 and the that the air passes through the stream of mid- 5 outer sides of the angular or prismatic slats n dlings only at right angles to them, thus inlap down beneath the cuter sides of the troughs suring the more perfect separation, as no dank and slats m, as shown, to cause the middlings ger exists of rmixing the coarse and line midto be thrown by their momentum well upward dlings by carrying the particles upward'r 105 upon the slats m, (see Fig. 8,) so as to increase. downward against each other. f o the angles of their zigzag course, and present The wings t and valves p will be adjustable the stream at right angles to the incoming airfrom outside the machi'ne,'as` shown by rodsv currents,vand aid in the more thorough sepat, (see Figs. 1 and 2,) to regulate and control ration of vthe coarse from the fine. the air-currents. The bottoms of the spouts rio When running down theinclines m n., the E will be provided with adjustable sleeves E, 5 line middlings and dust will `rbe precipitated to adjust them to the condition or quantityof f to thebottom 0f the stream and the coarse bran or chop runningthroughl the machine, yparticles rise to the surface, and `then when while valves E3, operated by rods 'E from` the the whole runs down overthe Apoints of the' outside, enable me -tov control the suction'of 115 inclined slatsn and drops to the next incline -the fan H. The springs a a', upon which the m the coarse particles 'will be toward the 'outshaker-frame Bis mounted, are set with aforside', and the fine particles toward the inside, ward slant, so that the shaker will be given a of the machine. 1 l slight rising and forward movement and a fall` 4 power of suction is required to move ing and backward movement to assist the chop :2o the fine particlesthan to move the coarse parin its traveling over the; sections, and-'canse ticles;l hence, if the currents owing inward the bran, Ste., to riseto the surface more read# are just strong enough to pick oli the inner ily. The wings twill also be utilized to aid layer of fine particles; the coarse particles will in the separation of the coarse I ayer from the line layer as the middlings drop from the 125 be unaffected and drop intothe hoppers P P,

pointsy of the angular inclines n.k by being while the fine particles and dust only will be carried over the wings or dividers t. By thus turned outward to divide the stream between .the layers under some circumstances.

arranging the coarse middlings toward the in- Under some circumstances some ofthe knifeilowingcurrent of air a more perfect .action of the latter is obtained, as the-line iniddlings edge joints c may be closed by setting the two 'r3o sets of blades opposite each other when chop are simply picked oli? from the coarse ones and not brought in contact with `them again. requiring more time to separate .itsparticles is being purified.

If the air-currents ilowed in the opposite "direction, or if the middlings were notseparated The extreme dellcacy of adjustment required coarse middlings and heavy bran. Byy this simple means the iine middlings are separated lf)rom the coarse, and the bran separated from oth. i 5 The outlets e e2, Ste., from the hoppers D, it will be observed, are very narrow. Hence only a very thin wide stream of middlings will be fed to the troughs k, and the outlets will be in the form of a spout, as shown, their.A IQ lengths-that is, their cross-measurement in the line df the length of the machine-correframe B, that for a one-inch stroke being about one and one-half in ch long, and increasing or r 5 decreasing as the stroke is lengthened or shortened.

The exit-slots e, it will be-observed, are not quite down to the extreme ends of the hoppers D, but a small space is left to be occupied 2o by an inclined-topped strip.

When the middlings are thrown forward by the movement of the shakers and hoppers, they will pile up above the slots e, and not all pass through at once, so that a portion is left 2 5' to run through the slot at the backward stroke,

which the inclined form of the top of the filling-strip assists them in doing, thereby insuring a flow of middlings through the slots e at'both the forward and backward strokes 3o of theshaker and hoppers and producing a Steady iiow, which is the great desideratum itliis'class'of machiIIestUsecu-rearnnifor action of the air.

of the knife-edged joints renders it necessary to provide each hopper D D'l D3 with two sec-1, tions, so that what one fails to cut H the other will.

The bottoms of the hoppers D will he covered with cloth having eyelets 'u aroundV its edges, throughwhich cords w, running over pins 4v, are run and tightened up by a screw, y, (see Fig. 7 whereby they may beA kept 1o stretched tight, and thus produce a hopper that will be very light and'strong. This method of tightening the cloth I nowelect to claimin luy-application filed July 23, 1881, Serial No.

rlhe mouths of the hoppers G and the spouts to the hopper K will be provided with valves z, to prevent the air being drawn-in at these points and interfering with the operation of the machine. The edges of the shaker-frame 2o Bwith which the chop and middlings comein contact will be covered with sheet metal to prevent wear. The fans H M, it will be observed, are made with screw-shaped blades, as more effective work can be accomplished with this form than with the ordinary fan, andwith less expenditure of power. rEhe dust-chamber F may bedispensed with, and the spouts E con! ducted into one common trunk,and from thence into a dust-room.- By these simple arrange- 3o ments the use of the .expensive bolting-cloth for the shaker-frame is dispensed with.

A great advantage is gained by using the narrow suction-spente E, as only a very small amount of suctionis required. Curving the dust-catcher N inward is advantageous, as when the dust is shaken loose by the knockers it will fall directly into the hopperKand not catch upon someother part of the surface of the catcher. p

rlhe use of unwoven loose cotton as dustcatchers in mills is much more eectivethan -woven cloth, asbeing without strands or yarns no regular sqnare holes occur, as in cloth, but the loose fibers cross and recross each other in such an interminable manner as to be certain to catch everyparticle of dust.

Having thus described my invention, what I claim as new ,is-a j I, 1. The' combinationf with a"`shaker"fr"ame, 5o B, adapted to be agitated, ofsections b' bz b34 b* b5 b b', with their edges armed with sharp blades c and made adjustable vertically, .sub sstantially as set forth. 4

2., The combination and arrangement ot' the B, adapted to be agitated, the adjustable knife-edge sections b' b bib* b5 b b', and the suction-spouts E, substantially `as set forth.

3. The combination, with a shaker-frame, B, adapted tov be agitated, and the adjustable knife-edged sections b b2 bB b*y bib b",of the hoppers D-D Ds D, substantially as setforth. 4. The vibrating hopper D', prgvided near its lower end with a pendentexit-spout, and a beveled block or strip, as shown, against edge sections b' having their upper ends thereto, for

11. The combination of a trough having au its lower edge. extending-l 4of chop,

the lower end of the hopper, as and for the purpose specified. Y

5. The shakervframe B,provided with knifeb b3 b* b5 b bi, incombination with a rough-surfaced covering to the said sections to assist the chop in traveling over their surfaces,'substantially as set forth.

6. In a middlings-purifler', the slatsm and n and inclined chutes `4@forming a series of troughs, arranged as shown, in combination with hoppers P, P', and K, partitions L Lf, and fan M, the several parts being adapted to operate as set forth.

7. The combination, with the hoppers D' D2 D3 D, of cloth bottoms thereof, and eye lets e, and cords and pins w substantially as set forth.

8. In middlings-purifiers, the combination, f

with an agitating-frame, ofa sectional bottom, the sections thereof being arranged so that from front to rear of the frame'the rear edge of one sectionVv will be lower than the 4front edge of the next section, whereby as the frame is agitated the middlings will be passed from front to rear in layers, and the lower layer cut off from the upper and passed down beneath the sections, as set forth.

9. The combination of a side casing, the

vertical series of prismatic barsn, and pivoted dividers t, inclined shelves or chutes m,"

arranged to leave spaces between their lower ends and the chop down onto the next lower chute m, and

dividers t, and means, substantially as set forth, for creating an aircurrent whereby the middlings are caused to take a zigzag course, and the air-currents are compelled to descend through the middlings at right angles thereto, for th'e purpose set forth.

10. The combination of a side casing, a vertical series of prismatic or angular bars, n,

bars n for the passage o'f 'the' above the level of Y roo and pivoted dividers t, inclinedshelves or chutes, their lower ends and the bars n for the passage of the chop down onto the next lower chute m, and means, substantially as setv forth, former-eating anair current, whereby the middlings are caused to take` a zigzag course and the air-currents are compelled to pass through the middlings at right angles the purposes set forth.

inclined side with beyond the end of the opposite side, and a space between the two sides for vthe passage one above the other, a vertical series of pris matic or angular bars vn, yhaving their lower middlings are with the coarse m arranged to leave spaces between inclined chutes or shelves arranged.

rio

ne particles on the'other, and means, sub- *line parallel, or substantially so, with the ro stantially as described, for creating an airpores of the collecting medium, substantially current to pass through the stream from the as and for the purpose set forth.

, side having the heavier particles, substantial- In testimony whereof I aiix my signature in 5 1y as described. presence of two witnesses.

12. The combination of a dust-collecting fab- FAUSTIN PRINZ. ric or medium, a fan, a knocker located and Witnesses: operated to strike the collecting medium from JOHN M. CONNOLLY,

the side against which the dust is driven in a A. J. GRUNDMAM.

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