US9863A - Grain- winnower - Google Patents

Description

a. B. SALMON.

Grain Winnower.

No. 9,863. Patented July 19,1853.

N. rum 1mm 1 Wm B; C.

UNITED STATES PATENT OFFICE.

GEO. B. SALMON, OF ELMIRA, NEI/V YORK.

GRAIN-WINNOWER.

Specification of Letters Patent No. 9,863, dated July 19, 1858; Antedated July 6, 1853.

To all whom it may concern Be it known that I, GEORGE B. SALMON, of Elmira in the county of Chemung and State of ew York, have invented certain new and useful Improvements in Grain- Separators; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the anneXed drawings, making a part of this specification, in which- Figure l is a longitudinal vertical section of the machine, the line of section being through the center. section of the blast spout taken at the line w, 00, Fig. 1. Fig. 3, is a plan or top view of the screen or sieve.

Similar letters of reference indicate cor responding parts in each of the several figures.

The nature of my invention consists in cleaning and separating grain by means of a blast spout, screen and troughs, arranged in a manner which will be hereafter described, by which the grain is perfectly separated from the improper substances which is usually mixed with it previous to being separated, and the grain, as well as the different sorts of improper substances conveyed to separate places and kept distinct or separate from each other.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

A, represents the frame of the machine which does not differ materially from the frames of other machines of the kind in use.

B, is the blast spout connected at its lower end to the fan boX C, which contains the fan D. The blast spout B, is curved at its upper end and inclines downward a short distance as seen in Fig. l. The outer side of this curved upper part of the spout is formed, for a short distance, of wire cloth E.

F, is the screen placed on the upper part of the frame A, and directly over a box G, having an inclined bottom H, the lower end of which rests against the inner side of the blast spout B, immediately below an opening I, which leads into the blast spout. The screen is formed of two parts or rather has two different sized sieves (a) (b). The sieve (a) is finer than the sieve (12). They are both placed in one frame, the fine sieve (a) being at the upper part of the frame,

allows the substances thence upon the floor or into Fig. 2, is a horizontal" in a receptacle at the back of through the lower or coarser sieve see Fig. 3. Directly under the fine sieve (a) there is an inclined board J, see Fig. 1, upon which smaller substances than Wheat or other grain, but of an equal specific grav- 1ty fall, and is conveyed into a hopper K, having a double inclined bottom L, which above mentioned and which passed through the fine sieve (a) to fall into trough or spouts M, M, placed at each side of the blast spout B, and from a proper receptacle, see black dotted arrows in Fig. 1. The substances larger than the wheat or other grain to be separated pass over both sieves (a) (b) and fall upon the floor or the machine, The wheat passes (b) and falls upon the inclined bottom H, of the box G, and passes down said bottom into the blast spout B, through the opening I, and

see red dotted arrows.

1 passes downward in the blast spout and out at the opening N, see solid black arrows. lVhile passing down the blast spout the grain is subjected to the blast generated by the fan D, and dust and other foreign mat ter of less specific gravity than the grain is forced out at the top of the blast spout, the dust passing through the wire cloth E, see solid red arrows, and chaff, chess, et cetera passing downward from the mouth of the blast spout. See black arrow 1.

The screen is somewhat inclined, the inclined board J, underneath the fine sieve (a) resting upon cleats (0) attached to the sides of the frame. The lower end of the screen rests upon a vertical spring 0, the lower end of which is secured in a socket P, by a thumb screw R said socket being attached to a cross piece (d) of the frame A. The spring by being secured to the frame in this manner may be raised or lowered as desired and any proper inclination given the screen.

S, is a cam upon the shaft T, of the fly U. This cam as the shaft T, rotates acts upon the spring 0, forcing it outward, the spring returning by its elasticity. Now as the lower end of the screen rests upon the top of the spring 0, the spring fitting in a slot in the frame of the screen, it will be seen that a reciprocating motion commonly termed the shake motion is given the screen as the cam revolves. The cam S, in the drawings is represented of square form, but it may be an eccentric or many other difscreen F, nor the the grain by the fan blast alone as ex erience has fully shown. In my machine, t ose substances such as cockle et cetera pass through the fine sieve (a) and fall upon the inclined board J, thence into hopper K, and fall through the troughs or spouts M, M, upon the floor or into a proper receptacle as before mentioned. They do not come in contact with the fan blast, it is not necessary they should-as the blast if sufiiciently strong would throw out the grain as well as the cockle. 2nd, by employing the adjustable spring 0, the screen may have any desired elevation given it and thus be adjusted as circumstances may require.

I do not claim the blast head, or the blast spout B, separately, neither do I claim the trough and spouts M, M, separately; but

What I do claim as my invention and desire to secure by Letters Patent, is

1. The expansion of the upper part of the blast spout B, into the circular irregular enlarged head with an opening or mouth at the lower extremity, partly covered with the seive E, for the purpose of allowing the force of the blast to be exhausted, the screenings immediately falling through the opening or mouth of the head, while the blast and dust escape through the screen E, the blast being governed by a slide, substantially as fully set forth and described.

2. I claim the arrangement and construction of the graduated sieve (a, 1),) of unequal fineness, the portion a, being protected from the action of the fan blast so that the small substances such as cockle &c. passing through and falling on the bottom board of the sieve a, pass off at the trough and spouts M, M; and when the grain arrives at the coarser part of the sieve b, it passes through and is acted upon by the fan blast, while larger substances than wheat pass over the end of the sieve b, and fall on the floor, substantially as herein fully set forth.

In testimony whereof I have hereunto signed my name before two subscribing witnesses.

I e. B. SALMON.

Witnesses ARTH. C. WATKINS, R. WASHN. FENWIG

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