US31989A - Improvement in grain-separators - Google Patents

Description

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Grain Winnower. No. 31,989.- Patented April 9, .1861..

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LINUS MERRILL, OF JANESV'ILLE, WISCONSIN.

IMPROVEMENT IN GRAIN-SEPARATORS.`

Specification forming part of Letters Patent No. 3l ,989, dated April 9, 1861.

To all whom t may concern,.-

Be it known that I, LINUS MERRILL, of Janesville, in the county of Rock and State of Wisconsin, have invented a new and Improved Grain-Separator; and l do hereby declare that` the following is a full, clear, and exact description of the sam e, reference being had to the annexed drawings, making a part of this specification, in which Figure lis a side sectional view of my invention, taken in the' line w x, Fig. 2; Fig. 2, a transverse vertical sectionof the same, taken in the line y y, Fig. l.y Fig. 8, a detached plan or top View of the upper screen; Fig. 4, a transverse section of the same, taken in the line z z, Fig. 3.

Similar letters of reference indicate corresponding parts in the several figures.

The object of this invention is to obtain a simple and efficient machine whereby foreign substances may be thoroughly separated from grain and different kinds of grain separated from each other, such as oats from wheat, dac.

To enable those skilled in the art to fully understand and construct my invention, I will proceed to describe it.

A represents a framing which may be constructed in any proper manner to support the workingparts of the machine. On the upper part of the framing A there is placed a hopper B, and within the framing A there are placed three screens C D E, said screens being connected together in a zigzag manner, j

the two screens C D being inclined in the saine direction and parallel with each other, the .screen E being inclined in a reverse direction and connecting the lower end of screen C with the upper end of screen D, as shown clearly in Fig. l.

Beneath the screens C D E there are placed, respectively, chutes a a c, and the three screens are suspended in the framing by vertical springs CZ. The screens C D are provided, respectively, with longitudinal central troughs F G, and the screens aforesaid are divided by oblique ledges or flanges e into a series of smaller screens dit, which all communicate with the central troughs F G, as shown at f in Figs. 2 and 3, and a chute a is placed beneath each screen uff, as shown clearly in Fig. l, the chute d f the uppermost screen u* serving as a conductor to the screen ct*,i1nmediately below it, and so on. The lower screen D is constructed precisely the same as the upper one C, the trough G of screen D leading into an inclined transverse trough H, which has its discharge end projecting from one side of the framing.' The trough F of screen C leads into a spout H', which also communicates with trough H. The screen E has a chute c underneath it, the lower end of which is provided with a discharge-spout g, which projects from the side of the framing A.

J is a curved` blast-spout which. extends from below the lower screen D and up in front of the framing A and over the top of screen C to within a short distance of the j hopper B.

K is a shaft which is placed in the upper part of the framing A, and from which a shaft L is driven, the latter having a wiper h on it, which acts against a projection i at the side of the upper screen .C and gives a shake motion to the screens C D E.

The grain to be operated upon is placed in the hopper B and the shaft K rotated by any convenient power. The sound grain passes through the several screens a* of the upper screen C, while oats and large impurities which cannot pass through the screens a* are directed by the ledges or Iianges e into the central trough F, and pass from thence into spout l-I, and are discharged from the mmachine through spout H. (See red arrows, Figs. l and 2.) The chutes a of thescreens d* conduct the grain to the several screens dit, and the grain passes from the lower end of screen C on screen E, the good grain passing over screen E and onto the upper part of screen D, through the screens a* of which it passes, and is discharged into an inclined transverse shaft M, all oats and other large impurities that might have passed through the Ascreens a* of the upper screen C being separated by the lower screen D,`the meshes vof which areatrifle smaller. Ablast of air is forced through the spout J by the usual fan. This blast effectively separates all light impurities from the grain as the latter drops from the hopper B on the screen C, and the screen E separates the heavy small impurities which can pass through the upper screen C and are too heavy to be removed by the blast troughs F G and chiites a and used in oonfrom spout J. neet-ion with a, screen E, to operate as and for I do not claim, separately, any of the wit-,him described parts; but

Ido claim as new and desire to secure by Letters Patent- The screens C D, when subdivided into smaller screens cf, provided with central the purpose set'forth.

Witnesses:

HIRAM POTTER, E. L. SOOFIELD.

LINUS MERRILL.

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