USRE2852E - Improvement in threshing-machines and separators - Google Patents

Description

@uiten tatrs Estant @ffice HUGH W. MIA'ITH'EWS, OF CHICAGO, ILLINOIS.

Letters PatcntNoGSQ, datent August 2T, 1867; rea-sue No. 2,852, dated February 4, 1868.

IMPROVEMENT-IN THRESHING-MACHINES AND SEPARATORS.

TO ALL WI-IOM IT MAY CONCERN:

Beit known that I, HUGH W. MATTHEWS, of Chicago, in the county of Cook, and State of Illinois, have invented certain new and useful Improvements in Threshing and Separating-Machines; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making part of this'specificati'on, in whicl v Figure lis an elevation of one side of the improved thresher and separator.

Figure 2 is atop view of the same.

Figure 3 is a longitudinal section, taken in the vertical plane indicated by red line x in iig. 2, showing the strawshakers depressed. l y p Figure 4 is a similar section of the same'parts, showing the straw-shakers elevated.- v

Figure 5 is an enlarged transverse section taken in thevertical plane'indicated by red line y'in iig. 3.

'Similar letters of reference indicate corresponding parts in the several igures.

The object ofv this invention is to obtain a simpleand eiicient mode of conveying away straw from n. threshing-device, and at the same time shaking the straw`in such manner as to eect a thorough separation of the grain from it. i

The nature'ofimy invent-ion consists in the employment, io conjunction with a threshing-drum or other suitable well-known threshing-devices, cfa number of reciprocating serrated or toothed shakers, operating ,throughan open or slattcd platform or rack, upon which the thrcshed straw is received from the thresher, and

so constructed as to give to the straw an intermittent vertical motion, and at thesarne time a tossing movement ltoward one endof platform or rack, thereby effecting-a. complete loosening'of the straw, and a separation of the grain and chaff from it, as will be hereinafter explained.

The invention also consists in employing a'series of vertically-reciprocating and longitudinally-moving straw-shakers in conjunction with .a stationary platform or rack, which is so constructed asito allow said shakers to play freely through it and act upon the straw, and which will at the same time allow of a free escape of grain and chaff through it; Isaid platform or rack being arranged so as to incline slightly toward the threshing-device, and thereby prevent a too rapid passage of the straw over it, as will be hereinafter explained.

It also consists in arranging beneath a slatted or open grain-rackor platform, and a series of longitudinally und vcrticallymioving straw-shakers, ccrtainmeans by which all of the grain and chaff which fall through said rack or platform will be conducted into a trough, 'and thence conveyed out of the machine, to be subjectedto the welleknown winuowing and cleaning-machinery, as will be'hereinafter described. v

To enable others skilled in the art to understand my invention, I will describe its constructionl and operation.

In the accompanying drawings, A represents abox or framework, of a rectangular form, made in a. lstrong and substantialA manner, and provided at one end with a feed-table, over which the grain is passed ou its way to the threshing-drum. The grain is threshed'by means of a cylinder, A', which is armed with studs, and arranged transversely across one end of the frame A, above the inner end of the inclined feed-table B, as shown in figs,` 2 and 3. The ends of the shaft of the threshing-drum A have pulleys or belt-wheels, a. d', secured upon them, as shown in figs. Zand 5. The pulley a has a belt, Z, passing overit, which passes over a. large pulley, c, below' it, and the pulley a has a belt, c', passing over it, which also passes over a pulley, d, below it. Below the threshing-drum A is a slatted' rack or platform, C, which extends to the opposite end of the frame A, and inclines toward said drum, as shown ings. 2 and 3. v'llhis rackC is slotted longitudinally, the number ofslots corresponding to the'number of shaking-hairs which play through them. Besides the slots, it will be seen by rference to iig. 2, that the slats, between the longitudinal slots or spaces, are thicklyperforated for the pur.`

pose of allowing the free passage of grain and ehatf through the rack, while the straw is moved overthe rack and discharged from its highest end. This rack C is hinged at its lowermost end, beneath the drum A', to the sides of the frame or box-A, and its opposite end rests upon ledges, e, projecting from the inner 4sides of said frame or box A. By thus attaching the slotted. rack to its box or frame, one end of this rack can be raised and access obtained to the devices beneath it. Beneath the slatted and perforated graiulrack C is a series of longitudinal blades, D DAD, having their upper edges notched or serrated like saw-teeth, or in any' other suitable manner. These blades are secured to two horizontal transverse rods, dd', which rods are secured at their ends te short crankarms,fffjl which have their bearings in the longitudinal sides of frame A, as shown in fig. 5. These blades are parallel to each other, and arranged upon4 the rods d d', so as to rise and descend through the longitudinal spaces between the slats of rack C. The crank-armsff have wheels or pulleys, c g, secured to them outside of the frame A, which wheels or 1drums are connected together by means of a pitmamg, the ends ,of which are pivoted eecentrically to the outer faces of said wheels or pulleys, as shown in fig. 1. By means of the pitman-rod y' both cranksff will receive-'the same motion, and both the front and rear ends of the several blades D will be raised and depressed simultaneously.

The throw of the cranks to which the rods d d are secured should be such that the up-strokc of said cranks will move the serrated edges of the blades'D some distance above the upper surface of the slatted rack C, and

kin descending, the cranks should move the upper edges lof said, blades below and clear of the rack C. The

cranks give a vertical motion to the blades, and, at the same time, a longitudinal movement. These movements of the serrated blades D communicate rapid shalringhnovemen'ts to the straw, and, at the same time, move ,the straw, by steps, toward the highest end of the rack. During this tossing motion of the straw the grain and chafl` will-be separa-ted from it, and will fall through the openings made through the grain-rack upon inclined planes L L, and directly into a central longitudinal trough, J.

The trough J is arranged in the middle of the width of the frame A, beneath the blades or shakers D, and the inclined planes L L` will conduct the grain, which does not fall directly into the `trough J, into this trough. Within trough J is a screw-conveyor, K', which is supported at itsv ends by suitable bearings, and rotated, so as to 'convey the grain to one end of said trough, where is discharged into a suitable receiver, or upon riddlcs,-

which will separate the grain from impurities. The trough J and its conveyer K may be inclined toward the threshing-end ei' the machine,l and the shaft ofthe conveyer may have a pulley, p, upon it, which, by means of a belt passing over it', and also over a pulley, r, on the shaft of pulley 0l, will give a rotary motion to this conveyer.

I do not desire to confine my invention to the means herein shown of communicating motion to the several parts for threshing, and separating, ,and` conveying, as other well-known mechanical means may'be employed in their stead; .nor dol desire to coniine myself to having the grain-rack inclined and pivoted, as described, though I prefer to have this rack thus arranged and attached.

By my general arrangement and construction, the cost of producing au'complete thresher and separator may be materially reduced, and operated with less -power and cost of repairs than the machines 'hitherto employed for a like purpose, and the process of separating the grain from the straw may be accomplished at much better advantage than when riddles are relied upon for doing the entire work of separation.

Having described my invention, what I claim as. new, and desire to secure by Letters Patent, is

1. A'longitudinallyslatted grnin-raek or platform', C, constructed substantially as described, iucombinzu tion with vertically and longitudinally-moving shakers D, arranged so as to pla-y between the slats of said rack, substantially as described.

2. The combination of a threshing-device, a perforated and longitudinally-slatted. stationary rack, C, und blades or straw-shakers D, operating substantially as described. i

3. A'stationary or movable raclqG, composed of perforated slats, having longitudinal spaces between them in combination with serrated blades D, arranged and operated substantially as described.

4, The slatted and perforated grain-rack, arranged so as to incline towardtbe thresl'ling-device, and hinged to the. main boxer frame A, substantially as described.

5. The combination of a slatted rack or grain-platform, C, the serrat'cdgrain or straw-shakers, operating through said grain-rack and aconveycr, arranged and operating substantially as described.

' A Y HUGH W. MATTHEWS.

Witnesses Cunsrnn VKINNEY, JAMES HALL.

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