US322820A - Grain-separator - Google Patents

Description

(No Model.)

I. HESS.

GRAIN SBPARATOR.

Pelnted July 21 f f A #orne y UNrTJED STATES PATENT OFFICE.

ISRAEL HESS, OF GOSHEN, INDIANA.

GIRAI N-SEPARATO R.

SPECIFICAT formi ig part of Letters Patent No. 322,820, dated July 21, 1885.

Application filed April l0, 1885.

To all whom, it may concern.'

Be it known that I, ISRAEL Hass, a citizen of the United States, residing at Goshen, in the county of Elkhart and State of Indiana, haveinvented certain new and useful Improvements in GiainSep-aiatois; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the saine, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this speciiication. v

My invent-ion relates to grainseparators; and the novelty consists in the construction, arrangement, and adaptation of parts, as'will be more fully hereinafter set forth, and specically pointed out in the claims.

I provide a peculiar upper or chaff screen having cross-bars with abrupt sides in one direction and inclined sides in the other. The depending edges of the abrupt sides are scalloped to present numerous faces to the draft and to equalize the same, and this upper screen inclines downwardly away from the fan.

I do away with the necessity of shoes, and have the screens occupy the entire width of the casing. Each screen is oscillated by connections, and flexible shedding-cleats are provided to prevent the grain from wedging between the screens and the sides of the casing. The several screens are given differential movements, and a carrier and elevator may- 3, an enlarged detail of the upper or primary screen, and Fig. 4, a detail in section.

To enable others skilled in the art to which the invention relates to make and use the invention, I will vdescribe the construction and mode of operation of the same, referring by letters for this purpose to the accompanying drawings. y

A designates the main casing, having the (No model.)

ordinary bearings for a fanshaft and fan B at the front, and a trough, C, is arranged transversely along the rear, in which trough re volves a worm-conveyer, C, designed to carry the heavier refuse back to the hopper A by means of an ordinary elevator. The hopper A extends the ent-ire width of the machine, to distribute the grain evenly over the screens, and the upper screen, D, is suspended at the rear from the inner sides of the casing by hangers d.

Near the front end of the 'upper screen is journaled at d a crank-shaft, d2, which has journals in opposite sides ofthe box and carries a pulley, d4, which by a belt connects it with the fan-shaft.

Pivoted about centrally, as at f, to the opposite inner sides of the casing A are two levers, F, and from pins j", near the upper ends of these levers, are suspended by brackets g the rear end of the screen G, the forward end of said screen G being journaled at y' upon a crank-shaft, H, which in turn is journaled in the frame and connected to the power by a pulley, h.

The lower screen, I, inclines in the direction'of the fan or forwardly, and receives its motion by reason of being secured by brackets i to pins f2, near the opposite ends of the levers F. K

The pivots of the levers F are about the middle of their length, as at f, and have their bearing in the side walls of the' case. The rear ends of the screens I and G are respectively suspended from the opposite ends of the said levers F by means of the brackets 'i and g and the pivot-pins ffl. Ihus it will be seen that when motion is v imparted to the crank-shaft H by means of belt from the fan-shaft, the screen G will be vibrated, and will communicate motion to the screen I through the medium of its connections therewith. It will be observed that the first movement of the screen G will be rearward, carrying the upper ends of 'the levers F in a similar direction. This will move the lower ends of the said levers in the opposite direction, which will consequently move the lower screen, I, simultaneously and in an opposite direction from the upper screen, G. The screen D not being directly connected with either the screen IOO G or I, it will be seen that its movement mayl differ in point of time or stroke from either of the latter-named screens.

The' screens are made to fit snugly within the walls of the casing, and the screens G, I, and D have each shedding-cleats m,'as shown, to prevent grain from falling between the screens and the casing.

The screen G occupies an approximatelyhorizontal position, and has an oscillatory movement, which delays the grain and so agitates it that without other provisions it would be liable to get between the said screen and the casing. To prevent this I provide flexid Able cleats R, which, secured at their upper edges to the inner surface ofthe case, fall over the edges of the cleats m upon either side of the screen.

The screen D has wires which run longitudinally of the same, and are secured in the end rails thereof. rEhe side rails have inclined slots s, in which are received the ends of crosspieces S, of sheet niet-al. Each of these crosspieces S is composed of a leaf7 s', which, when the parts are in place, presents an inclined side to the front ofthe machine, and an abrupt leaf, s2, which latter is arranged at an angle of about forty-five degrees with the leaf s', andv when the parts are in position these leaves sl stand vertically in the screen. The leaves s2 have their lower edges scalloped,as seen at s3,

to form a number of faces, which will interrupt or distribute the blast and the iiow of grain. The leaves s s2 are made of single pieces of sheet metal, and the longitudinal wires 85 pass through perforations in both leaves.

The abrupt sides in the rapid oscillations or vibrations of the screen D serve to throw the chaff, Src., to the rear, While the heaviery grain rides down the inclines to the screen'below, coming in contact with the faces s or passing directly to the screen G. These faces s equalize or distribute the blast around the screen D.

Modications in details of construction may be made without departing from the principle or sacrificing the advantages of the invention, the essential features of which will be readily understood from the foregoing description, taken in connection with the drawings.

Having thus fully described the invention, what I claim, and desire to secure by Letters Patent of the United States, is-

1. In a grain-separator, the combination,

with the casing and the vibratory screen D, of the screens G and I, the crank-shaft H, the levers F, having central pivotal bearings in the side walls of the casing, and the devices connecting them with the screen, substantially as specied. v

2. The screen D, composed of the side rails having slots, the end rails, the longitudinal wires, and the bent cross-bars of sheet metal arranged in said slots and upon said Wires, and having inclined leaves on their front faces, and scalloped abrupt leaves s2 on their rear faces, as and for the purposes set forth.

In testimony whereof I affix my signature in presence of two witnesses.

ISRAEL HESS.

WVitnesses:

JOEL H. AUsTIN, VILBER L. S'roWs.

Images