US152291A - Improvement in grain-separators - Google Patents

Description

F. 10 H N S0 N. Grain-Separators.

Patentedlure 23,1874.

No.l52,291.

0 COCO 0 0 00000 6 00000 OOOCO 0000 00 O 00 O mmey! UNITED STATES PATENT OFFICE.

FRANK JOHNSON, OF FREDERCKSBURG, MISSOUR.

IMPROVEMENT IN GRAIN-SEPARATORS.

Specificaon forming part of Letters PatcntNO. 152,291, dated June 2.3, 1874; application filed March 7, 1874.

T0 all whom zt may concern:

Be it known that I, FRANK Jo1mson, of Fredericksburg, in the county of Gasconade and State of Missouri, have invented a new and useful Improvement in Grain Separator and Cleaner for Thrashers, of which the fol lowing is a speofication:

Figure lis a top view of my improved device, parts being broken away to show the construction. Fig. 2 is a vertical longitudinal section of the samo, taken thro ugh the line 30 .70, Fig. 1.

Similar letters of reference indicate corresponding parts.

The invention relates to an in1provement in grain-separating and cleaning attaolnnents for thrashers, as hereinafter described and specifically indicaced in the clai 1n.

A represents the side boards of the shoe, to the upper forward part of which is at' tached the board B O, upon whioh the straw and grain are reoeived from the thrasher. The upper part B of the receiving-board is stationary, and the lower part 0 may be hinged or pivoted at its upper edge to the said upper part or to the shoe A. The lower edge of the lower part 0 is secured adjustably to the shoe A by bolts D, which pass through the side boards of the said shoe, and through slotted lugs attached to said hinged board 0. To the adjustable board 0 are attaohed fingers E about three inches apart,

and two feet, more or less, in length, along which the straw slides, while the grain drops through. To the sides of the shoe A below -the fingers E is attached a fran1e, F, to the side edges of the forward end of Whioh are attached, or upon them are formed, short tongues, whioh enter grooves G in the side boards A of the shoe, so that the forward end of said frame F may be adjusted higher or lower by shifting it from one to another of said grooves. The rear end of the frame F is supported by bolts H, which pass through holes in the side boards A of the shoe, and through slots in the rear parts of the side bars of the said frame F. To the side bars of the frame F are attaohed the ends of the crossslats I, whioh are arranged one inch apart, and the forward edge of eaoh rear slat onehalf an inoh below the rear edge of the next forWa-rd slat. The slats I are made about half an inch thick and four .inches wide, and to their rear edges are attached wires J, about one-quarter of an inch apart, and which project about four inches. The forward edges of the slats I are made thicker and are beveled ot, or have narrow inclined plates attached to them, so as to allow the grain to pass throngh, and also to give the blast of air et proper direction to blow off the chafl. K L is the tailings-board, the lower part L of whioh is sta tionar and from its lower and forward edge the tailings drop into the conveyer placed"beneath, and which is not shown in the drawings. The upper part K of the tailings-board is hinged at its lower and forward edge to the rear edge of the part L, and its rear edge is seeured at any desired elevation by a long rod, M, which passes through the rear ends of the side boards of the shoe A, and has a head formed upon one end, and a hand-nut screwed upon ts other end. N is the grainboard, the forward edge of which is hinged or pivoted at the rear edge of the cheat or oookle screen 0, so that its rear edge may have a vertical movement of about two inches. The rear part of the cheat and cockle screen 0 is covered upon its lower side With a plate, P, to carry the small seeds that pass through said screen 0 over the tailingsoonveyer. Q, is a screen for separating any heavy substance that the blast of air from the fan cannot re move. R is a eheat or cockle screen, placed beneath the rear part of the screen Q, and beloW and in front of which is placed the grainconveyer, whioh is not shown in the drawings. The sereens Q R are seoured in place by along bolt, S, whioh passes through the lower forward part of the shoe A, and has a head formed upon one end and a handnut screwed upon its other end. Tho screens Q R are placed below the fan, so that the blast from said fan ean only strike the soreen 0 and slats I. The soreens O R may be removed and replaced with boards when desired. The shoe A is supported by four upright sDring-standards, T, which are so formed as to allow the sh0e to have a longitudinal but no lateral movement. To the outer sides of the lower part of the forward ends of the sides of the shoe A are attached the rear ends ofthe spring connecting bars U, the forward ends of which work on short cranks V formed upon the shaft V, which revolves in bearings in the frame of the machine, and may be driven from the cyl inder or fan shaft, as may be convenieno.

Hzwing thus described my invention, what I-claim as new, and desire to secure by Letters Patent, is-

The combination, With shoe A andadjustab1e frame I having sla-ts and wires, as spacified, 01: the adjustable board 0 and fingers E, as shown and described.

FRANK J OHNSON.

VVitnesses:

CAR-LSSES TANNEIH, 0. J OHNSON.

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