US675418A - Beater and picker for grain-separators. - Google Patents

Description

No. 675,4l8. Patented June 4, l90l. J. E. SHAVLAND.

BEATEB AND PIGKEB FOR GRAIN SEPABATORS.

(Application filed In. 30, 1899.)

(No Model.)

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UN TTED STATES PATENT OFFICE.

JOHN E. SHAVLAND, OF ANGUS, MINNESOTA, ASSIGNOR OF TWO-TIIIRDS TO J. F. MONTGOMERY AND G. F. BRIGGS, OF SAME PLACE.

HEATER AND PICKER FOR GRA|N-SEPARATORS.

SEEGEFIGATION "orming part of Letters Patent No. 675,418, dated June 4, 1901.

application filed March 30, 1899. Serial No. 711,057. (No model.) I

To (6 whom it may concern:

Be it known that I, JOHN E. SHAVLAND, a citizen of the United States, residing at Angns, in the county of Polk and State of Minnesota, have invented certain new and useful Improvements in Beaters and Pickers for Grain- Separators; and I do hereby 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 same.

My invention relates particularly to grainseparators, and has for its especial object to provide an improved beater which when brought into the proper relation to the threshing-cylinder of agrain-threshing separator is adapted to perform the double function of a grain heater and picker.

To the above ends my invention consists of the novel devices and combinations of devices hereinafter described, and defined in the claim.

My invention in its preferred form and arrangementis illustrated in the accompanying drawings. Therein like characters indicate like parts throughout the several views.

Figure 1 is a vertical longitudinal section taken through a portion of an ordinary threshingmachine, the same being provided with my improved heater and picker. Fig. 2 is a transverse section taken on the line 00 w 'of Fig. 1, and Fig. 3 is a detail view looking at a portion of one side of the separator-frame and showing the means for adjustablysecuring the crankshaft portion of my improved device against rotation.

In the illustration given, 1 indicates the case or frame, 2 the deliverydeck, 3 the tooth-threshing cylinder, t the toothed concave, 5 the vibratin g separating table or rack, and 6 the vibrating grain-pan, of an ordinary threshing-machine or separator.

As illustrated in the accompanying drawings, myimproved beaterand pickerinvolves a rotary cylindrical drum a,wl1ich is suitably mounted on its end trunnions a, which work in bearings h, suitablysecured to the sides of the separator-case 1. One of the trunnions a of the drum a is extended and provided with a pulley a over which a power-driven belt (not shown) would run to impart rotary motion to said drum. At several points-as shown, at three points-spaced equidistant circumferentially of the drum or cylinder a and rigidly secured to the cylindrical shell thereof, are guide-bars (1 At various points longitudinally of the cylinder or drum a the bars a are provided with perforations a, which, for a purpose which will hereinafter appear, are round at their outer extremities and are elongated circumferentially of the drum at their inner extremities.

Working within the drum 0. is a crankshaft c, the projecting trunnions or end shaft sections 0 of which are mounted in axial seats in the trunnions a of the said drum. By some suitable means this shaft 0 c isto be prevented from turning or rotating with the drum a, and, as shown, this is accomplished by means of an arm or lever 0 secured to the projecting end of one of the trunnions or crank-sections c. This arm 0 is preferably made light enough so that it may be sprung slightly sidewise or to and from the case 1, and it is provided with a pin 0 which is adapted for engagement with any one of a series of perforations d, formed in the plate d, rigidly secured to the side of the case 1. By this device the crank-shaft may be set and held in different adjustments circumferentially of the rotary drum a.

Working through the perforations or seats a of the guide-bars a and pivoted on the ofi set inner section of the crank-shaft o c are three series of plunger-like fingers f. These fingersfare provided with pronged heads f at their inner ends, and these heads are mounted directly on the said crank-section of the crank-shaft. The three heads of the three fingers or plungers, which stand in line with each other circumferentially of the drum, are made to overlap, as best shownin Fig. 2. Spacing-thimbles g are shown as placed between the sets of heads f.

It is of course evident that all of the fingers fbeing of the same length and mounted to rotate on an axis located eccentric to the axis of the drum they will be projected or extended outward from the drum in the direction of-the eccentricity of the said crank-shaft and will be drawn inward and turned in a reverse direction. By reference to Fig. 1 it will be seen that the crank portion of the crankshaft is turned directly toward the toothed threshing-cylinder 3, and hence it of course follows that the fingers f will be projectedfrom the drum a the greatest distance when turned directly toward the said threshing-cyl- I inder. The beater is so mounted that the fingers f will pass as closely as possible to the cylinder-teeth.

In threshing-machines now in general use great difficulty has been experienced in getting the beaters or pickers to carry away the' straw delivered to them by the threshing-cylinders fast enough to prevent overaccumulations behind the threshing-cylinders. By my I, invention the feeding capacity of the combined picker and beater is made fully equal to that of the threshing-cylinder which delivers thereto, and hence straw will not accumulate back of the cylinder, but will be fed onward as fast as delivered to the combined picker and beater.

In virtue of the relative arrangement of my improved beater with respect to the threshing-cylinder it is caused to perform the additional function of a picker to keep the teeth of the threshing-cylinder from carrying the straw upward and backward toward the front of the separator.

The operation of the combined heater and picker above described is obvious, it being understood, of course, thatit is mounted torotate in the same direction as the threshingcylinder or as indicated by the arrows marked on Fig. -1. The beating fingers or plungers f will, as has already been indicated, be projected to their greatest lengths of projection through .the drum a when turned toward the cylinder 3, so that they will exert their greatest efficiency as they are moved downward froln this position toward the separating table or rack'5, and while making this movement they will gradually be drawn back into the drum a as the work required of them is decreased. By the time that a particular series of fingers f begins to move upward and away from the separating-table 5 they will have been drawn nearly or quite within the seats a of the cooperating guide-bar a so that they will have no tendency whatever to carry straw upward or over the top of the rotary drum a. This action is of course very desirable.

It will of course be understood that the socalled combined heater and picker above described is capable of many modifications in construction within the scope of my invention. For example, the rotary part which carries the beating fingers or projections might take various other forms than that of a cylinder and eccentrics or other devices might be substituted for the crank-shaft, which serves to cause the said fingers or projections to rotate on an axis eccentric to the drum or carrier. It will also be understood that the device may be otherwise used than in connection with a threshing-cylinder, though it has a particular and important relation to the action of a threshing-cylinder. v

What I claim, and desire to secure by Letters Patent of the United States, is as follows:

The combination with the drum or carrier a having the plurality of tapered guide-openings a, of the crank-shaft c, c, mounted within said carrier at, the eccentric portion of said crank-shaft being separable from the arm portions 0, the plurality of fingers f working through said perforations a and provided with the bifurcated heads f overlapping and pivoted on the eccentric portion of said crankshaft, and the loose spacing-collars g on the said crank-shaft spacing apart the overlapping sets of heads f, the said heads f and collars g being removable when the eccentric portion of said crank-shaft is disconnected from one or both of the arm portions, substantially as described.

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

JOHN E. SHAVLAND.

Witnesses:

WILLIAM WATTA JACOB JOHNSON.

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