US35421A - Improvement in grain-separators - Google Patents

Description

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EDMUND BURKE, OF vllllOR'I, NEW HAMPSHIRE.

IMPROVEMENT' IN 'GRAIN-SEPARATORS.

`Specification4 forming part of Letters Patent No. 35,4Ql, dated May27, 1862.

.'To' aZZ whom t may concern.-

Be it known that 1, GEORGE Laren, of E1- mira, inthe county of Ghernung and State/of New York,l haveinve'nteda new and Improved Grain-Separator; and I do hereby declare'that l thefollowing is a full,`1clear, and exact de# scription of thesanne, reference being had 'to the accompanyingdrawings, making a part of this specification, nin whichj Figureisa side sectional `view of my invention, taluni-in` th nue w w, Fig. 2. Fig. 2 is aplan or top View of the-same; Fig. 3, an en- ,Iarged sectional view o`f aportion of the saine;

Similarfvletters o1" reference indicate corre-l `spondi'ng parts in the several iignresr The object of this invention is to obtain a Amachineby which grain may not only be sepa rated from 4all impurities, but different kinds of i grainv separated from each other.

"lo this end the invention-consists in the employment or' use of aseries of screens fitted within a case provided with a shake motion and with knocking-devices, and usingin connection with said partsra'seriesof blast-spouts arranged in a peculiarfwayand provided with a self -acting/va'lv/e, 'angdjustable gate, .and

refuse-receptacle arranged Vas herenin'after l fully ,shown anddescrihed.

To enable those skilled in theart to fully understand andconstruct my invention, I will proceed to describe it.

A represents a rectangular bed or' base `on `which the working `parts of-the'machine rest, andB is a box orcasewhich is attached to elastic supportsyC, and has a shake motion given it by Ineens of a` crank, D, and connecting-rod E, the crank being on a shaft, F,which isi-placed on a suitable frame, G.

Within the box crease B there isfplaced ajseriesof inclined screens, l, 2, 3, 4, 5, 6, 1,

and'S, and ascries ot" chutes, 1X,:2X; "3X; and

4*, arranged as shown in Figc'l, the chutes, n which are simply inclined platesorboards,A

allinclining downward toward the front end j of the case, and all, with-the exception of the -lower`-one,r4*,l1ead into a vertical spout, H, While the screens incline downward both to-, ward the back andA front end of the case,- the screens 1H2i`nclining down tdward the front end,` the screen 3 toward the back, the screensV 4 and 5 toward the front, the screen 6 toward the back, and the screens 7 and Stoward the' front. The lower chute, 4X, discharges on the screen 7 l y A On the topof 'the box or case B there is secured a hopper, H', provided atits dischargeorifice with a val-ve, 1 to-regulate the discharge o fgra-in upon the uppermost screen, .1. The lower end of the spout H communicates with a passage, vl', at the bottom of the box [or case Band. underneath the-lowest screen, 8, as shown` in Fig. l, and the two lowest screens, 7 and 8, have troughs J J at their `and 5, and the other two against the under I ,side bf the chutes 2X and 4K. A knocker, M,

acts against the under side of tliebottoin of the box or :case B, said knocker being at the end ofa bent lever, N, which has its Fulcrumpin passing through pendants ax, attached to the box or case, and itsrlowerfend fitted in a fixed arm, e, attached to the bed A. This knocker therefore, it will be seen, is operated b'ythe'shakemovement of the box or case B.

O O O O represent a series of bars,- which v are placed on shaftsfin the box or'cs-eBl Thesefshaftsf extend through thebox or case at one end, and each has a cross-bar, g, at-

tached,by w'hich the shafts f are tnrned,to admit of the bars 0 being in a vertical position and in contactwith the two screens, or with a screen and chute, between 4which they are placed. This willbe understood by referring y to Fig, 3, in which a bar, `O,is shown in tint in ayertical position andin contact with a 'screen and chute, and shown ina horizontal position` free from the screen and chute,in red outlThse"bars O, when in a verticalpo` sition,comn1unicate the jar from the screenor chute below themv to the one immediately a suction-blast is generated in above, cleaning the screens. They are only used, however, when the machine is not in working operation and for the purpose above specified. The knockers, however, are always at work. P isa suetioni'amwhich isinclosed in a case, Q, atthe outer side and lower end of the box K. The case Q, communicates atits ends with the lower part of a vertical spout, 7L, in the box-l. The spouth is provided with a valve, R, which is hung on a pivot, i, and is allowed to work freely thereon, and against the upper end of said valve a pin, j, attached toa lever, S, bears, said lever having-a weight, T, on it, which muy be adj usted farther in or out on the lever to regulate thepressure ofthe pinj on the v alve, which opens inward. The upper end of the spout h communicates with a chamber, U, in the upperpart ofthe box K, and the upper end of the spout a also`communicates with said chamber,as well as two spouts,b b, which are parallel with a.h spout a communicates by an inclined spout, o', with the lower end of thespout b, and the @pours a and b communicate with each other by a passage, d, and just below said passage there is an opening, c', which communicates with the external air. In the` lower part of the spout b, just below the spout c', there' is an opening, c, and a simar opening` e', is made in the c, through which the grain enters into it. y The chamber U extends down between the spout Wand spout Il., and has a door,f, at its lower end,and in the upper part of said chamber there is hung, by an axis,vg, a gate, V, which serves as a sort of valve and extends down below the upper ends of the spouts. The lower end of the gate has a cord, h', attached to it at each side, and these cords eX- tend through the box K at one side and serve as a means `for adjusting it either forward or backward, as may be desired.

The fan lJ is driven by a belt, i', from the shaft F, and when the machine is in operation the blastspouts a cb b IL, as indicated by the arrows in Fig. 1. The grain passes from the hopper H upon the uppermost screen, l, which allows the grain,

cockle, and fine impurities Ato pass through, but excludes the large foreign substances, which pass olf from the lower or depressed end of said screeninto a spout, j, which discharges said impurities at one side of the box or case B. The grain falls on screen 2, which allows the coekleand fine impurities to pass through it,but not the grain. The cockie and `line impurities are conveyed by the chute 1`^' into the spout H, while the grain passes over screen 2 and is discharged on the highest end of screen 3, which separates oatsandl other largergrain from the smaller'kind-such as wheatwhich passes through screen 3 and falls on chute 2", the large grain passing into spout H, while the chute 25 conveys Ithe smaller grain to the screen 4, through which it also passes, while any oats or larger grain thanv wheat passes olf and perform an important function inwhich The lower end of they spout c just below the-passage the depressed end of the screen 4 into a spout,

7a', and are discharged from the side ofthe case or box B. The grain which passes through screen 4 falls upon screen 5 and passes overit and is'conducted to screen G, while the screen 5 admits of fine impurities passing through it and falling upon chute 3X, to spout H.I The small grain (wheat) passes through sereen, while the large grain (oats,

dac.) passes over4 itinto spout A. The grain passes through screen 6 falls on the chute 4X, which conducts it to thescreen 7, over which the large wheat passes into the blast-spout a', while the smaller wheat,which 'passes through 7, falls upon screen 8, over which it passes into the blast-spout u. rl'lie knockers insure the free passage of the grain over the' screens and chutes, and also insure the efficiency of the screening operation. The bars O, however, during the screening operation, are not, as previously mentioned, turned vertically, so as to transmit the jar of the knockers to all the screens and chutes, as the jar in that case would be too great. The bars O are only made to serve as a connection for this purpose, in order to clean the meshes'ot' thesoreens after the work of the latter is performed, 'so that they may be clean fora succeeding operation. The oats and large grain pass off in a spout at the depressed end'or" the passage l, the bottom of which maybe perforated to allow the dust and ine impurities to pass through into a bag or receptacle prepared to receive it. Thelarge wheat, which passesinto the blast-spout a', is subjected to a suction-blast therein, which takes up ne impurities, while the grain in passing down by the opening ex and c is subjected to a crossblast which serves to turn any long impurities-such as bits of straw and the like--ad cause them to be carried up by the direct blast. This cross-blast .is an important feature of the invention, as it effectually prevents the foreign substances specified from passing down with the Wheat-y a contingency which would be likelyto occur if suffered to be retained in anendwise posi tion to the blast. The .smaller grain, which passes from screen. 8 into the blast-spout a, is subjected to a similar action at the opening e" at the lower end of the spout b. The large wheat is discharged from a side spout, bx, at the lower end of spout L', while the smaller wheat is discharged from the lower end of the spout b". A

The strength of the suctionblast is regulated by adjusting the weight l on the lever S,- which bears against the valve R, as previously described, and. all impurities-such as light shrunken grain, Stc-are deposited in the chamber U, it being designed that they shall drop or fall therein, the suction-blast being regulated to effect that result, while the dust and lightest impurities are drawn into the fanlcase Q and `expelled therefrom by the .action ofthe fau, vent thejcasual grain over the c The gate V serves to preassage of the light shrunken aniberU, as it gives the blast which conducts it A ber, and by'adj u sting iii-backward toward the f spout b", as shownby `dotted lines," the upward suetiont its forward side .willbe weakened- 'in .consequence 'of the area of the upwardrpas Sage being' increased,*and'fthe light in1puri.

rThis invention feombiynatiou withzthespoutflfpassage I, and knockers L, and M, substantially as and forv the purpose hereinsetifoith';

2. The ladj nstabiebars O, placed' in th V1'-v bratng box or vcase B and arranged with the screens and chutes thereof, s(Hostailiiiail'lym;A

and for thefpur'pose herein set forth."

3. The vcross-blastsI formed ,in the syo'ts a b 4by means of the openings e* 5e e ,as described', for theprpose set forth.

4. The combination of he spouts a a",vb'"b,

.and -hfwth the Chamber ,fa1 P, adjustable gate V, and selfaetingvalve R. all aranget." asshown, in connectionl with-fthe boxl or case B, containing the screens and"v vehutes, 'as' and "f-GEORGELEACH-f@ Witnesses:

Re (rlmrlmr,`

JAMES LAIRD.

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