US1568618A - Grain cleaner - Google Patents

Description

Jan. 5 1926. 1,568,618

' H.E.PFORR GRAIN CLEANER File d April 8. 1924 s Sheets-Sheet 1- I advent w v I Jim. 5 ,1926.

H. E. PFORR GRAIN CLEANER Filed April 8, 1924 .5 Sheets-Sheet 2 Jan. 5 1926.

H. E. PFORR GRAIN CLEANER Filed April 8, 1924 v 3 Sheets-sheaf 3 '1 III A compressor or blower 23 is conventionally shown and is employed for the purpose of delivering air under pressure to the separating chamber 21 through means of a pipe 24. The pipe may have a suitable gate 25 by which the passage through the pipe may be restricted to regulate the air to be delivered to the separating chamber. The pipe 9% preferably enters the separating chamber at an otherwise closed end near the top thereof and the opposite end of the chamber 21 is open and receives near its top wall the grain guide or chute 20 in order that the open end of the chute will be in line with the discharge end of the blower which will force air against the grain and chaff entering the separating chamber, as has been described.

The bottom of the separating chamber has a plurality of oppositely inclined walls 26 and 27 intended to collect grain at different localities as to the length of the separating chamber, it being understood that heavy grain will be propelled to a greater distance against the action of the air blast than the lighter grain, and hence the heavier or perfect grain will be received by the hopper that is farthest from the chute 20 and directed therefrom through openings 28 in the bottom of the separating chamber to the spout 29, from which the grain may be bagged or collected, as is ordinarilv done with devices of this kind. The lighter grain will, of course, not have the velocity of the heavier grain and it wil be arrested by the air blast so that it will be arrested by the battles 27 and be diverted thereby into the hoppers and pass through openings 80 in the bottom of the separating chamber, from whence it will reach the spout 31 for collection.

The end of the separating chamber opposite the air pipe and below the end of the chute 20 is open and chaff, straw and light materials will be forced from the open end thereof in order that the grain that has beencollected will be clean and free of such chafl,

Any suitable means may, of course, be employed for driving the power shaft and the inventor does not wish to be limited with respect to these features. Figure 1 shows appropriate belting for operating the mechanism from the power shaft, but the inventor does not wish to be limited with respect to the details of confiruotion in this regard.

In order to direct grain that is descending in the separating chamber toward the bottom thereof, a series of transverse and vertically disposed plates 27 are arranged between the two side members 27* constituting a frame which may be applied to the interior of the separating chamber, and this frame may be supported by the inclined sides of the hoppers 26 and 27. These vertically disposed plates 27 will serve to prerent undue agitation of the grain after it has lost the velocity imparted thereto by the belts 14 and 17, as the plates will serve to guard the grain against the action of the air blast which is relied upon for cleaning the grain and retarding its travel.

I claim:

1. In a grain separator, conveyer belts arranged in proximity to each other and coacting to carry grain between them, to project the same into a separating chamber means for driving the belts in unison and at uniform speed, a converging grain guide in position to receive grain from the belts, a separating chamber into which the grain guide discharges, an air supplying means at the opposite end of the said separating chamber for forcing air against the grain entering the separating chamber, a plurality of spaced grain collecting means at the bottom of the said separating chamber and discharge chutes connected with pairs of the grain collecting means, substantially as described.

2. In a grain separator, means for forcing grain through a converging chute which terminates in the open end of a separating chamber, means for forcing air in a direction approximately opposite the small end of the chute and toward the open end of the I separating chamber, collectors at different distances from the means for delivering grain into the separating chamber and means therein which individually will receive grain of diflerent specific gravity, and guards over the collectors for preventing agitation of grain in its descent to the col lectors.

3. In a grain separator, conveyer belts arranged in proximity to each other on different planes and coac-ting to carry grain between them, means for driving the belt in unison and at uniform speed, a separating chamber into the upper portion of which the grain is projected by the conveyer belts, means for delivering air under pressure to the separating chamberin a direction opposite that traversed by the grain delivered to the separating chamber, and a sectional bottom in the chamber the sections of which are at different distances from the grain delivery section of the separating chamber for collecting grain of different specific gravity, the discharge end of he means for projecting the grain into the separating chamber and the discharge-end of the air blast conduit being in line With one another and above the means for collecting the grain projected into the separating chamber.

4. In a grain separator, a hopper forreceiving grain located above a pair of-rotary carriers, a way having a portion- .ofits open larger end opposite the carrier belts,

said 'way'converging from its receiving end 1 to its discharging end, a separating chamber which is open at the end into which the way extends, a blast fan, means for rojecting' a blast of air into the aforesaid open ended chamber and toward the open end of the Way, means for receiving grain of different densities which extend partially up- .ward in the separating chamber providing a plurality of compartments, pairs of said compartments having eduetion openings for the grain, and chutes underlying said eduction openings whereby grain of difierent specifie gravity may be separated.

HENRY ERNEST PFORR.

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