US39262A - Improvement in grain-separators - Google Patents

Description

H. B. THOMAS,

Grain SeparatorlA Patented July 14, 1863.

N, PETERS. Mbihomphlr, Whington. D. Cv

UNITED. *f STATES- .PATENT,A OFFICE..-

HENRY B. THOMAS, OF CASCADFLIOVVA..

IMPROVEMENT IN GRAIN-SEPARATORS.

Specification forming part of Letters Patent No. 39,262,V dated July 14, 18163.

To all whomit may concern:

Be it known that I, HENRY B. THOMAS, of Cascade, Dubuque county, Iowa, have invented a new and useful Improvement in Grain-separators; and l do hereby declare the following to be a full, clear, and exact description of the same, the annexed drawings forming a part hereof.

Figure l is a perspective view of the separator. Fig. 2 is a transverse sectional elevation of the same.

Like letters of reference indicate like parts in the two figures.

The object of'my invention is to seprate oats from wheat or other short grain 5 also, to remove cockle broken grains, and other foreign matter from the pure grain 5 and it consists in the peculiar construction and arrangement of the parts, as hereinafter described.

A is the base of the apparatus. B B are uprights which support in appropriate bearings the square revolving separator C. The separator consists of a central shaft, a, having journals resting in uprights B, and two sets of radial arms, b, which terminate in the corners of the square inner case, F. This inner'case is four-square and its sides are perforated throughout with numerous small holes i, about one-fourth of an inch in diameter. Surrounding the inner case, F, a second case, G, is formed, leaving a space, h, of about oneourth of an inch on all sides between the sides of F and G. Thecase G is not perforated, but is constructed with longitudinal openings c at each of the four corners, asv

shown. It is, moreover, lined with fine wirecloth d, as represented, for a purpose to be explained. Surrounding 'the case G, and at H, does not extend to the end piece, J, but an opening, k, is afforded by which clean grain escapes from within the screen into an appropriate receptacle. The central shaft carries a pulley, j, by which motion is communicated to the separator.

The apparatuswhen in use is mounted in an inclined position, so that the grain received at one end gradually works toward the other.

The motion is slow, and the operation of the apparatus is as follows: The grain to be separated is admitted into the central area through the opening e. As the apparatus revolves slowly, causing the grain to slide or shift from one corner of the central Vspace to another by its own gravity, a portion enters the apertures t endwise. The short grainsuch as wheat-passes. entirely through the apertures, and falls into the space h, between the cases F and G, but the long grain-such as oats-being arrested by the inner face of G- 'cannot penetrate far enough to fall into the space, but is held in the apertures until the separator revolves halfaround, when it falls back into the central space toward the discharge end of the apparatus. If the grains again enter the apertures, they are again held as before, and when carried around fall back into the central area, still nearer the discharge end, until they finally escape therefrom. The 'wire-cloth lining d serves to hold the long grains, whose ends are thrust into its meshes, from sliding down obliquely from the apertures into the intermediate space h. The wheat, together with cockle and other impurities, is discharged from space h through the longitudinal apertures c into the space g, inclosed by the outer case or screen, H. Here the small seeds and imperfect grains of wheat pass through the meshes of the screen and escape, while the pure wheat passes on by the inclination of the screen, and is finally discharged through the openings k into an appropriate receptacle.

Having fully described my invention and its mode of operation, what I claim as new, and desire to secure by Letters Patent, is the following:

I do not claim the use of one perforate cylinder within another for cleaning and separating different grains from eachother; nor do I separating different ,grains-7 substantially in I cla-im, nor use cylinders for olea-ning grain; the manner and for the purpose herein sei; but forth.

What I claim as my invention, and desire to secure by Letters Patent, is- H' B' THOMAS' Two or more concentric cubical vessels or Witnesses: wiboxes, the inner one 'perforates and the outer W. S. HALL, covered with Wire-gauze or its equivalent, for A. C. THOMAS.

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