US14865A - Winbtowing-mill - Google Patents

Description

N. FEYRS. PNOTOLITHOGRAPHER. WASHINGTON D C UNITE STATES PATENT OFFIO.

HORACE N. GOODRIOH, OF AURORA, ILLINOIS.

WINNOWING-IVIILL.

Specification of Letters Patent No. 14,865, dated May 13, 1856.

- Various Kinds; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part thereof, in which- Figure 1, represents a perspective view. Fig. 2, represents a central longitudinal and vertical section through the same on an enlarged scale. Figs. 3 and 4, represent modifications of the machine, as arranged for the separation and cleaning of grains and seeds of variable sizes, such as are grown by agriculturists.

Similar letters where they occur in the several figures, denote the same general parts in all.

The object of my invention is to embrace within one machine, all the elements necessary not only to the cleaning, but the separation of all such grains and seeds, according to their kinds as are produced or grown generally by farmers, and the nature of my invention consists in the arrangement of series of graduated screens placed above the screens of an ordinary winnowing machine, in connection with an auxiliary blast produced by the main fan blower, or an additional blower, for the purpose of causing such separation, and cleaning, in a very.

effectual manner, aswill be described.

To enable others skilled in the art to make and use my invention, I will proceed to describe the same with reference to the drawings.

In the perspective view Fig. 1, the general construction of the machine is shown, resembling in its outline the winnowing machines in common use, but arranged more especially for the separation of the smaller seeds such as timothy or herd-grass.

Fig. 2, shows the interior of the machine, the parts thereof being arranged for separating wheat, from such impurities as are generally to be found mixed with it, as follows: A, is a Zinc-screen, as I term it, being made of a plate of Zinc or other metal, with suitable openings punched through it. The material to be cleaned and separated, is thrown into the hopper N, Fig. 1, and from thence passes along the zinc-screen A, where the rst separation t-akes place, the wheat and smaller gains passing through said screen, while some of the pure grains such as oats, together with the larger impurities are retained, until they pass to the end of the said screen. Underneath the screen A, is a fine wheat sieve B, which retains the larger grains and allows the smaller to pass through onto another screen O, below it, which has a different grade of mesh or opening, for a third separation. The finer impurities retained on the screen C, after arriving at the end of the screen, are caughtat L, and passing through L, are discharged at H, where they are caught in a proper box or chamber.

D, is a screen board, upon which the light seeds and impurities, which may have passed through the series of screens above it, are caught and carried to L, and from thence, as just above described, to the place of discharge at I-I. This screen board D, should be removable, so that in case timothy or clover seed should be mixed with the heavier grains, it may be saved separate from the light impurities, said seed passing along to L where a shoe receives it, and passes it out, through a flexible spout, at a, a, Fig. 1.

O, Fig. 2, represents a fan wheel such as is ordinarily used on machines for cleaning grain, and K, is a smaller fan blower, which may be driven from the shaft of the one O, by an endless belt or otherwise. The fan K, is not actually necessary at the point where it is located, but a blast of air at that point is so, and the fan K, is shown as a means of giving that blast. The necessary current of air to keep the material in motion on the series of screens A, B, C, and to aid in its separation, may be derived from the main fan wheel O, either by an arrangement of wind boards, or by the placing of the fan wheel so that it-s blast shall be common to all the wind spaces between the screens, in which case, the secondary blower K, may be dispensed with.

J, is a hinged door, commento the spaces between A, B, C, D, and this door may be raised or lowered, as circumstances may require, to regulate the current of air passing through said spaces; or, for adapting such current to the divisions and separations to be made on said screens.

Fig. 3, represents the machine for cleaning timothy seed after chatting, wherein the screens A, and E, are considerably elongated, as well as the shoe M, which is to receive and convey the seeds into their proper receptacle. In this modification, the same general principle is involved, the screening surfaces being only increased in area by eX- tending them lengthwise. In this ligure, as also in Fig. 2, is a drop door I, which is closed or opened according to the kind of separation that is to be made, and the delivery thereof.

Fig. 4, represents the machine as arranged for the separation of flax seed, the impurities being taken olf at H.

Of that part of the machine below the screen board D, no particular description need be given as it may in every particular be the same as in the winnowing machines of common use. My invention relates to that part of the machine above D, which in an ordinary fanning mill would be the top or outside case, and I lay no claim to t-he arrangement of parts below the point or line of the screen or screen board D, as the case may be. The screens of course are to be graduated for their special purpose, and the gains or grooves into which they slide, should be such as to admit of their ready removal and replacement.

Having thus fully described the nature of my invention, what I claim therein as new and desire to secure by Letters Patent is The arrangement of the screens A, B, C, D, above the ordinary screens and shoes, of a common fanning mill, and furnishing a regulated blast to said series of screens, either from the main fan wheel or an auX- iliary wheel near thereto, for the purpose of comprising within one machine or frame the

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