US237678A - Grain-separator - Google Patents

Description

(No Model.)

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Grain Separator. No. 237,678. Patented Feb. 15,1881.

wif/Larmes. lm' ld/2h51@ UNITED STATES PATENT OFFICEo EDWIN O. DARLING AND BARTON B. GATES, OF ROCKTON, ILLINOIS.

GRAl N-SEPA RATO R.

SPECIFICATION forming part of Letters Patent No. 237,678, dated February 15, 1881.

i Applicationfiieamarehlaiseo. (Nomad.)

To all whom t may concern:

Be it known that we, EDWIN O. DARLING and BARTON B. GATES, all ot Bockton, in the county of Winnebago and State of Illinois, have invented a new and useful GrainSeparator, of which the followingis a specification.

Our invention relates to that class of separators employed mainly for separating oats from other grains; and it consists in a grainseparator embodying certain details in construction and combinations of parts, as will hereinafter be described, and pointed out in the claims.

In the accompanying drawings, Figure l is an isometrical perspective of a grain-separator embodying our invention, of which Fig. 2 is a central longitudinal vertical section, and Fig. 3 a side elevation in which the driving-wheel is omitted and a portion of the side casing and frame broken away to reveal the inner portions. Fig. 4 is a transverse section of a portion of the sieve and sieve-frame.

The main frame and casing of our improved separator are substantially the same as machines of its class now found in the trade; and these par s consist of like transverse frames, composed of posts A, caps B, and transverse footboardsG,snitably united. Theseframesare suitably separated and placed in an upright or vertical position,and the side casings, D, made of suitable material in proper form,are xed to the innerface of the posts of theframe, and one end is closed by end casings, E, which, in connection with the transverse walls a and b, the curved casing c, and one end portion, d, of the hopper, form the fan-case, having an open side, as at F, through which the air put in motion by the rotating fans is discharged into the shoe under the sieve.

At Gis represented a fan-shaft, mounted to revolve in suitable bearin gs, e, xed to the main frame. On this shaft are mounted cross-arms j', to the outer portion of which are iixed fanblades g, producing a fan-wheel of suitable size to revolve freelyin the fan-case.

A semicircular opening, H, is formed in the side casings immediately in rear of the parts on which the fan-shaft is supported, having for its center the center ofthe fan-shaft, and is employed to admit air to the fan, and provided with pivoted valves h, to regulate the admission of air to the fan-case.

I represents a sheave or grooved pulley mounted on the outward-projecting end of the fanshaft, and is designed to receive a round belt from a driving-wheel, to impart a rotary motion thereto.

J represents a shoe ot' rectangular form in plan, and of proper size to be received Within the casing at its rear end, to permit ot' a free movement therein. The sides of this shoe, in this instance, are made of plate material ofthe form represented at K, and are separated a proper distance to freely enter between the side casings, and in such separated positions are relatively fixed to an end bar, i), and to inclined bottoms j, which are separated to form a vertical transverse opening, k, to admit the grain from the shoe to the inclined screen. The end portion of this vertical opening is fitted with an inclined plate, 7s', to shorten the opening to conduct the grain from the shoe onto the inclined screen below. The rear end portions ofthe shoe-sides are notched in ratchet or toothed form, as atl, which receive the pivotlike endportions l of the end board, L, made vertically adjustable by means of its end pivots and the notched ends of the shoe. This vertically-adjustable end board, employed to close the end of the shoe, is held in place in contact therewith by means ot a rod or cord connection, l, with a coil-spring, Z,`iixed to the forward portion of the shoe.

The sieve proper, as represented at M, is of a well-known form, consisting ot' V-formed transverse ribs m, of plate material, slotted to receive lengthwise ribs m', forming V-shaped openings of proper size to permit the smaller grains, as grains ot' wheat, to pass through the sieve, and prevent the longer or larger grains from passing round the V-formed angle, and which, in the movements of the sieve, will be thrown from the pockets upward and .rearward and carried over the sieve. This sieve portion is supported in a suitable frame consistin g of side pieces, n, grooved lengthwise on their inner sides, to receive the projecting ends of the transverse V-i'ormed bars, and also receive the end bars, n', which are firmly fixed in place against the front and rear edge of the sieve, producing a sieve in a frame of rectangular form.

At n is represented aplate, of any suitable material, Xed to the upper surface of the end IOO bar of the sieve-frame in such a manner as to overlap the front V-formed bar to its rear edge, to prevent the lodgment of grain or other substances against the front edge of the front bar. The front end of this sieve-frame is supported in the shoe against its front end bar, fi, on inclined blocks o, fixed to the sides of the shoe, and the outer ends ot' the sieve side bars are fitted with aplate,0, fixed to their under outer end portions, adapted to en gage the pivot portions of the vertical adjustable end board, with which the outer end ot` the sieve is made vertically adjustable, and is held in its adjusted position by the action of the coiled springs Z".

The shoe containing the sieve is supported in place in the separator on bearings p, which project from its sides outward through openings in the sides of the casing, and enter openings prepared for their reception in the free ends of levers N, having their ends pivoted to the side 4casings, and it is also fitted with inclined arms P, iXed obliquely to the sides of the shoe, and their lower ends are pivoted to one arm of angle-levers pf, which are lpivoted in position to the inside of the side casings, to permit of an inclined movement of the shoe substantially in the lengthwise direction of the steady-arms. The upper ends ot' the steady-arms are fitted to engage -elasvtic stops p, adjustahly fixed in position to the inside of the side casings by means ot their lengthwise slotted arms, through which suitable clamping screws are passed to tix them in position. The shoe is held in its highest position with the upper ends of the steadyarms against the elastic stops by means of the action of the coiled springs R, connected at theirv lower ends to the free ends of the levers N, and their upper ends itted with a screwrod, r, which extends upward through a bracket, R', and iitted with a screw-nut, r,by which to increase or lessen the force ot' the. coiled springs.

At S is represented a iiuted feed-roll, placed crosswise of the machine, over the front portion ofthe sieve, in the delivery-openiu g of the hopper, and is iitted to revolve in bearings in the side casings. On its outward-projectin g ends, immediately on the outside of the casings, are mounted step-wheels t, the stepsot which, in its revolutions, engage a step, t', on the lever N and carry them,with the shoe thereto attached, downward to the position represented in dotted lines, and in the onward movement of the wheel its steps will pass the leverstep, and the spring action will cause the levers and the shoe thereto attached to rise with a velocity equal to the force of the spring action. By this arrangement we produce a machine in which the upward-throwing movement of the sieve will be substantially uniform under varying speeds of the other parts of the machine.

S represents a driving-wheel mounted on the outer end of the feed-roll journal. Its pe- Yripheryis grooved, and is provided with a round belt, which connects it with the sheave ot' the fanshaft. The drivin g-wheel is provided with a winch, t, by means of which motion may be imparted to the machine by hai i.. It is also provided with a pulley, t" by whocn it may be connected by suitable belting tp prime mover.

The bottom ofthe hopper is formed of a fixed portion, u, and a pivoted portion, u,,ne journals of which are supported in and extepd through the side casing, and one end is tred withA aspring-arm, u, which engages the tejgth of a ratchet-bar, ufl', fixed to the side casing, and furnishes the means for adj ustin g the opening of the throat to regulate the feed fromghe hopper to the sieve, and by means of the spriyngarm u" the pivoted portion u will yield to permit the passage of any accidental bulky gubstances that may get into the hopper without injury to the parts. The rear end ot' the hopperis formed ot' theinclinedboardc, havin",r its lower edge placed over the iluted feed-rol At T is represented a .screen-suppoi frame composed of side bars, fv, and endl c, suitably connected, producinga frame vangular in plan. This frame is iitted ,with metallic plates w, notched to receive the upper ends of the angle-levers p', and its lower portion is suspended on links w in such a manner that the frame will receive its motion through the angle-lever, put in motion from its connection with the shoe by means of the steady-arms P. A screen-frame composed of sides and ends x, suitably joined iu rectangular form, and provided with a suitable screencloth or webbing, is removably supported in the screen-supporting frame, having its lower end enter suitable clasps formed by the plates x', and its upper e'nd connected thereto by means of a button, (represented at 50.)

The rear end of the machine is fitted with an inclined conducting-spout, T', fitted to the inclined lower edge of the tail-board T", which is removably attached to the rear end of the separator, and is made vertically adjustable by means of hooking-supports fixed to the tail-board, and adapted to enter either of a series of holes formed in the rear ends of the side casings, all of which is clearly represented in dotted lines in Figs. 2 and 3.

From the foregoing it will be seen that we produce a separator provided with an adjustable force-feed, and a shoe in which the sieve will have a uniform upward-throwing movement, not affected by the changes ot' speed in the movement ot the machine.

In use the grain to be separated is placed in the hopper, and motion being imparted to the machine in the direction indicated by the arrow, the grain will be carried by the feed-roll onto the sieve, and its motion will cause the smaller heavy grain to enter and pass through the sieve-openings, and from thence to the moving screen, to separate the small grits and foul seeds which have passed through the sieve, and will then be discharged at the head of the machine in a comparatively pure state, and the screenings will be found under the IIO IIS

machine. The light grains, with all light foreign substances, will be carried and blown over the sieve and tail-board and dropped at the tail end ot' the machine, while the oatgrains will be thrown upward and rearward by the movement of the sieve, and the action of the air putin motion by the fans will assist to carry them over the sieve and drop them inside of the tail-board, to be conducted by the inclined spout into a suitable receptacle provided to receive them.

We claim as our inventionl. rIhecombination, with the shoe of a grainseparator and step-levers having the shoe pivoted. to their outer or free ends, of inclined rigid guide-arms connected with the shoe, and an adjustable spring connected with the free endS of the step-levers, substantially as dcscribed.

29 The combination, with the shoe, step-lever-.land step-wheels attached to the feedroll, of inclined rigid guide-arms connected with the shol and adjustable springs connected with the free ends of the step-levers, substantially as described.

3. The combination of the screen, shoe K, provided with the inclined rigid guide-arms, the angular levers connected to said guidearms, and the frame T, substantially as set forth.

4. The combination, with the shoe having series of grooves formed in its end, and an end board provided with pins which it in said grooves, thereby allowing of the vertical adjustment of the end boa-rd, of springs located in the forward portion of the shoe and con nected with the end board, said springs serving to retain the end board in place in any desired adjustment, substantially as set forth.

5. The combination, with the shoe provided 4o with inclined rigid guide-arms and means for reciprocating said shoe, ot' adjustable elastic stops fixed to the side of' the mill, for limiting the upward movement of the shoe, substantially as set forth.

' EDWIN O. DARLIN G.

BARTON B. GATES. Witnesses:

G. R. MANNING,

S. BARTHOLOMEW.

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