US249911A - Grain separator and grader - Google Patents

Description

(No Model.) 3 SheetsSheet 1.

H. P. EDMA NDS.

GRAIN SEPARATOR AND. GRADER.

No. 249,911. Patented Nov. 22,1881.

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3 Sheets-Sheet 2 (No Model.)

H. P'. EDMANDS.

GRAIN SEPARATOR AND GRADER.

No. 249,911. Patented Nov. 22,1881.

\ V812 for N. PETERS. PhoRo-Lilhagnphur. Wahingkm, D.C,

(N0 Model.) 3 SheetsSheet 3.

H. P. EDMANDS.

GRAIN SEPARATOR AND GRADER.

No. 249,911. Patented Nov. 22,1881.

PETERS mm.- s r Washingkm n, c,

' UNITED STATES PATEN'T OFFICE.

HIRAM P. EDMANDS, OF GOVINGTON, KENTUCKY, ASSIGNOR OF ONE-THIRD TO FREDERICK C. HEIMSATH, ,OF CINCINNATI, OHIO. I

GRAIN SEPARATOR AND GRADER.

SPECIFICATION forming part of Letters Patent No. 249,911, dated November 22, 1881.

Application filed June 28, 1881. (No model.)

To all whom it may concern.-

Be it known that I, HIRAM P. EDMANDS, a citizen of the United States, and a resident of Oovington, in the county of Kenton and State of Kentucky, have invented certain new and useful Improvements in a Grain Separatorand Grader, of which the following is a specificat1on.

This invention relates to improvements in machines for grading and separating grain;

and it has for its object to construct a compact machine with two air separating chambers arranged transversely to each other, whereby a large area in the air separating chambers is provided to separate the grain into two or three grades, and to permit the screens to be cleansed and changed while the machine is in operation.

To these ends my invention consists, first,

in the combination, with two airseparating chambers located at thetop of the machine, of

ascreen chamber or box and shaking screens 5 the machine and receiving the first grade of grain from one of the suction-spouts, a chute arranged beneath the shaking screens for conveying the grain into the other suction-spout, and a fan or fan-chamber arranged between 0 the air separating chambers and the shaking screens; third,in the combination of a screen chamber or box provided with a transverse stationary end board havinglongitudinal slots, with screen-frames and screens arranged to be 5 removed and replaced through the slots in the stationary end board of the screen chamber or box.

The invention also consists in certain other combinations and arrangements ofparts,which Figure 1 is a perspective view of a machine embodying myinvcntion. Fig.2 is afront elevation, partly in section, to illustrate the secondary separating-chambers. Fig. 3 is a central horizontal section of the pitman. Fig. 4

is a transverse section on line 00 a", Fig. 2. Fig. 5 is a transverse vertical section of the pitman and wrist-pin. Fig. 6 is a perspective view of the tightening pulleys or idlers. Fig. 7 is a plan view, illustrating the manner of driving the vertical fan-shaft from the horizontal main 6 5 driving-shaft.

Referring to the drawin gs, the letters A A A indicate the frame-work of the machine; B, the fan chamber, arranged in the top portion of the frame of the machine; I), the air and dust discharge-spout 5 O, the first air separating chamber; 0, the hopper from which the grain is admitted into the machine, 0, an inclined shelf on which the grain falls; 0, aflue for admitting the air into the stream of wheat 5 as it falls onto the shelf 0,- a, a damper or door for regulating the admission of air through fine 0. g

The letter D indicates a vertical spout down which the heavy grain falls, and up through which a current of air is drawn by the fan B to carry off chaff, dust, and the lighter grains. d indicates a horizontal flue passing over the top of chamber 0, thence to the vertical spout O on the opposite side of the machine from where the grain enters.

D indicates a secondary air separating chamber; a, an air-conduit of comparatively small area, to assist in carrying the dust and chaif through chamber D to the circular opening D, which connects chamber D to the fanchamber B, through'which the dust and chaff pass to the discharge-spout I). The lighter grains in descending the vertical flue d fall down the passage d, and are discharged out 5 of the machine by raising a valve or gate, 0. This completes the first step of separation and grading. The second step is performed onthe heavy portion, which falls down the vertical flue or spout D, which drops at once onto the screens E in the screen chamber or box. This chamber or boxis composed of the closed side walls, F, and rear wall, F arranged inside the main frame A A; and the shaking frame E, which carries and supports the screens E, is pivoted at its rear endto the side walls, F, of the screen chamber or box by means of pivots m, while its forward portion is supported by bolts extending through vertical slots m in the side walls of the screen chamber or box and adjustably held by thumb-nuts n, the object of such arrangement being to permit the screen-frame E and screens E to be adjusted into more or less inclined positions. The screen chamber or box is sustained on the up per ends of flat springs f f, which latter are attached at their lower ends to the base A of the frame-work.

To the side walls, F, of the screen chamber or box are rigidly attached cross braces or pieces g, provided at their center with studs g, and to the part A of the framework are rigidly attached pendent brackets a, provided with studs or pivots a. To these studs or pivots a. are centrally pivoted upright arms or levers H, which have their lower ends connected with the studs g, the upper ends of the arms 0 or levers being connected with the pitmen I,

all in such manner that the arms or levers H are arranged centrally with respect to the ends of the screen box or chamber.

The pitman I is rigidly and permanently attached at one end to a metallic socket, K, by means of depending side straps, K K, and transverse bolts or pins, and within the said socket are arranged two movable or sliding boxes, 6 17, having semi-cylindrical bearings fit- 0 ting the cranked end J of the main drivingshaft L. Between the end of the pitman and the inner box, i, is arranged a rubber cushion, J, and through the outer end of the socket K is tapped a screw, 7., which is for the purpose of adjusting the sliding boxes 6, said screw being provided with a jam-nut, k, for holding it in its adjusted position. The provision of this construction of pitman prevents shocks occasioned by the vibrating or shaking movements of the screen-box from being imparted to the driving-shaft, and the sliding boxes can be adjusted without detaching the pitman from the lever H.

The letter L indicates the horizontal driving-shaft, and L the pulley mounted thereon, by which the oscillating motion is imparted to the screen chamber or box, through the medium of the cranks, the pitmen, and connecting-rods.

The transverse rear wall or end board, F, of the screen-frame E is slotted longitudinally, through which slots the screens E are'inserted and withdrawn, the ends of said screens filling up the slots when in position. h indicates handles on the screens E, by which they are readily withdrawn when the screen box or chamber F is in motion.

In operation, the grain passing through the lower screen is delivered to a cookie-screen, N, which is attached to the bottom of the screen chamber or box. This cookie-screen separates the particles of foreign matter from the grain such as sand, cockle, &c.

N indicates inclined bottoms of the screen chamber or box, for couductin g the grain onto the cockle-screen, which acts as a spout to discharge the grain into the mouth of the secondary separating apartments, which are placed on the machine transversely with the separating-chamberl).

0 indicates a vertical spout of the sci-0ndary separating-chamber P.

0 indicates an inclined chute or shelf, onto which the grain drops from the cockle-screen N, which lattercauses the grain to spread out into a thin stream as it passes off the inclined shelf down and out the spout 0, during which time it is subjected to the action of an airblast passing up the spout O, which blast separates and carries off the lighter particles which have escaped separation in the former operations. The spout O is connected to the suction fan-chamber B, by means of the fines O 0 Q 1' and through openings D.

q indicates an additional separating-flue. The lighter grains which are carried up the spout 0 drop into the flue q, and an air-current entering the division-flue t assists in carrying dust and chaff through the opening D", through the fan-chamber B, and out the dustspout b. The fan B is keyed to a vertical shaft, R.

R indicates a bridge-tree spanning the top of the part A of the frame-work.

S indicates a journal-hearing for the shaft R.

T indicates a pivot on crossbeam T, on which the end of shaft B is stepped.

S indicates a vertical pulley keyed to shaft R.

U indicates a driving-pulley mounted on the shaft L.

L indicates a transmitting-pulley for driving the fan-shaft R by belting from pulley L over tightening-pulleys W W onto pulley S, keyed to shaft It. By means of these pulleys, W W, the motion from the horizontal shaft is conveyed by a single belt to pulley S on the vertical shaft It, and the pulleys W W change the direction of the belt from a vertical to a horizontal pulley.

Theletteruindicates a stationary frame, having forked feet 16 bolted to the frame A.

To the outer portion of the stationary frame it is hinged or pivoted a swinging bifurcated frame, V, the hinge or pivot in the present instance consisting ofjournals on the ends of the roller which extend through the frames V and it. Within the bifurcated swinging frame is arranged a secondary sliding frame, 10, in which is arranged thejournals of the roller WV, the projecting ends of the journals being arranged in boxes V, arranged to slide in slots in the swinging frame V. The adjustment of the roller WV to or from the roller W is efiected by the adjusting-screw s, for the purpose of IIO loosening or tightening the belt Y.. The swinging frame and its roller permit the parts toassume proper positions for changing the direction of the belt Y. This feature of my invention accomplishes a very useful result, as it avoids the use of bevel-gears and conveys motion from a horizontal to a vertical shaft by a single belt with a minimum amount of friction and strain.

I do not broadly claim two air-suction chambers arranged transversely with respect to each other above a fan and fan-chamber, as such of itself is not my invention; nor do I here claim the construction of pitman herein shown and described, as such will form the subject-matter of a separate application for Letters Patent.

What I claim isv 1. I11 a grain grader and separator, the combination, with the two separating blast-chambers located at the top of the machine, of the screen-chamber and the shaking screensin the lower portion of the machine, arranged to receive the first grade of grain from the suctionspout of one of the separating blast-chambers, and to effect a separation of foreign substances, and the fan and fan-chamber arranged between the air separating chambers and the shaking screens, the said members being organized to operate substantially as described.

2. In a grain grader and separator, the combination of two air separating suction-chambers located transversely to each other at the top of the machine, and provided with the depending suctiouspouts O and D, the screenchamber and the shaking screens arranged in the lower portion of the machine and receiving the first grade of grain from the spout D, the chute arranged beneath the shaking screens for conveying the'graiu into the spouts O, and the fan and fan-chamber arranged between the air separating chambers and the shaking screens, said members being organized to operate substantially asdescribed.

3. The combination of the screen-chamber F, provided with the transverse'stationary end board, F, having longitudinal slots, with screen-frames and screens arranged to be re moved and replaced through the slots in the stationary end board without removing the latter, substantially as described.

4. The combination,with the horizontal shaft L and its driving-pulley and the vertical shaft R audits drivin g-pulley, of thep ulleyW, mount-' ed in a stationary frame, the swinging bifurcated frame V, the pulley W, arranged within the swinging frame, and the belt Y, all substantially as and for the purpose described.

5. The combination, with the shakin g screenframe supported above the flat springs f, of the transverse driving-shaft L, having a cranked end, J, the pitman I, vertical lever H, pivoted at or near its center, and the stud g, centrally attached to the screen-frame, to which thelower end of the vertical lever is directly secured, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

HIRAM P. EDMANDS. Witnesses EUGENE L. FrRNKoEss, J. H. CHARLES SMITH.

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