US85141A - Improvement in g-rain-sep - Google Patents

Description

Shets-Sheeti.

Grain Separator. N0. 85,l4L Pa .tented Dec. 22,1868."

IVi'Zna-isesw l I N. PETERS, FHQTO LITHOGRAPHEIL WAISHINGTON D O w I 4 Sheets-Sheet 2. A. B. SMITH.

Graih Separator. Ne. 85.141. 7 Patented Dec. 2 2, 1868.

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Pafented Dec. 22, 1868.

N.'PETERS, PHOTO LITHOGRAPHER, WASHINGTON D C 4 SheetsSheet 4.

-A.' B. SMITH, Grain Separator; No. 85,141. Patented Dec. 22',- 1868.

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Letters Patent No. 85,141., dated December 215, 1868i dufcdutcrl'.Dccc-inbcrfi,1368.

IMPROVEMENT IN GRAIN-SEPARATOR.

The Schedule referred to in these Letters Patent and, making part of the same.

Figures 5 and 6, detached views, full size, of one oi" theknockers detached, showing my improved construction thereof, and mode of attachment and'adjustmeut on its shaft.

Like letters designate correspomling parts innll of the figures.

Let A represent the flame of a thresher and grainseparat-or provided with my improvements.

The main feature of my invention consists in the eiuployn'ient of a series of knockers, B'B and C O,

reciprocating a haifcircie between thcslats'of aster-- tionary inclined apron, D, for the purpose of conveying away the straw, and thoroughly shaking it in the act, for separating the grain therefrom.

The apron D is made of a set of inclined parallel slats,cxtendi ng upward andbackward from the threshing-cvlinder, with spaces between them wide enough to allow the grain to fall through, and to admit the passage of the knockers upwanil therein. The slats are thicker at the top than. at the bottom, as shown in fig. 3, so that no grain-heads, chafi, or other ohstruction may lodge between them. Also, there inclined guard-strips of metal, (I (I, inserted across the spaces between the slats,- substantially as represented, wherever they can be inserted without closing the way for the passage of the knockers, so as to prevent straws and heads iroiu working down between the slats and falling on the riddles, or sieves, below. These strips of metal are secured in saw-kerfs made in the edges of the slats, and are atsuch a distance apart as to allow the grain to freely pass down between them, and no more.

Fig. i represents a modified construction of the apron, consisting of a metallic plate, with slots 1: '1. therein, alternating in position, for tlmrcception of the kno(-l-:ers,'aml crescentor equivalent-shaped apertures u. u' for the passage of the grain down through the plate. 7 I

The knockers are divided into two sets, B B and G (3..

' Each set, on separate shafts b l) and 0 c, alternate. in position and in action, thatis, one set, B B, going up as the other set, U 0,.goes down. Theyreciprocate on their shafts aha-1i circle, or thereabouts; at the upward termination of the strokes, being in the position shown by the knockl-ars B B, fig. 2. The upward reciprocating movement moves the straw ,upward and backward on the apron, and at the same time lifts it,

so as to thoroughly shake it. The downward movement eases the knockers away from the straw,-without auytendency to' draw it down through the apron.

The shafts of the knockers are located beneath the apron, and this position and reciprocating movement of the knockers are'thc; only ones that will eifect-ually some the purpose intended.

"A continuous revolving increment of tlie.straw-dri\-'- ers, as heretofore in use, cannot operate successfully, their great defect being their necessary tendency to carry the-grain down through the apron.

In figs. l and 2,the knockers are represented as made of wire; but I prefer to make them and attach them totheir as represented in figs. and 6. Here they are formed of wood, in quadrantal form, or nearly so. They are clamped between metallic jaws M N and held by a bolt, 7;. One of the jaws, as M, has a fianeh, P, of cyliihlro-concave form, so as to fit the surface of the shaftv b, to which it is fastened by a bolt and nut, '21. The holt passes through an oblong hole or slot, t, in the flanch, so that the knocker can be adjusted lengthwise of the shaft, and be accurately located between the slats of the apron.

he alternate reciprocating l'llOYeIllBlltS of the two sets of knockers, B B and (l G, are produced in an accurate and simple manner hymeans of pinions f f and y g, secured respectively orb theirshafts I) b and c c, and-gearing-respectively into rackshhimrdi M,

which alternate in position onopposite sides of a slot-. ted reciprocating rack-bar, G, substantially as represented in fig. 1. It is evident that in whichever direc-. .t-ion the rack-barmoves, the racks h It will drive the.

shafts b b in the direction opposite to the motion produced on the shafts c c, driven by the opposite racks The rack-bar is reciprocatcd by-a crank-wheel, I, and

connecting-rod H, pivoted, at'm and a respectively to the crank-wheel and rack-bar.

Any equivalent means of producing the movement may be adopted.

The rack-bar is retained and directed in guides f g. Another ieatin'e of my improvement consists in the employment of a continuously-moving endless apron,

L, instead of a chute-board beneath the separatorapron D,'for the grain to drop on. This insures the regular conveyance of the grain to the sieves, and it never becomes obstructed. It passes around rollers-r s, one of which is driven by a band,,l, connecting it with a driving-pulley in any convenient position.

What I claim as' ny invention, and desire to secure by Letters Patent, is-

The reciprocating knockers B and G 0, arranged.

and operating in combination with the stationary slatted or slotted apron D, substantially as and forthe purpose herein specified.

Also, constructing the knockers of Wooden quad. rants, held between metallic jaws M N by bolts, sub-j stantially as specified.

Also, attaching the knockers by the flanclhplate P, with its slot t and bolt a, so as to be adjustable on their shaft, substantially as seti'orth.

Also, the'inclined guard-strips d d between the slats -of the apron D, in combination with the knockers B B, C (l, for the purpose specified.

The above specification of my improved grain-separator signed by me, this 10th day oft-Tannery, 1866.

' A. B. SMITH.

Witnesses:

. J, 8. BROWN.

vA. S. VAN VRANKEN.

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