US343364A - Teeeitoet - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

B. D. GROOKER.

GRAIN SEPARATOR AND ELEVATOR FEEDER.

'No. 343,364. Patnted June 8, 1886.

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N PETERS. Fhclo-Lilhographar. wasrlin mn. D. c.

(No Model.) 2 Sheets-Sheet 2.

I B. D. OROOKER.

'GRAIN SEPARATOR AND ELEVATOR FEEDER.

No. 343,364. Patented June 8, 1886.

4 UNITED STATES PATENT OFFICE.

BENJAMIN D. GROCKER, OF WALLA WALLA, WASHINGTON TERRITORY.

,GRAlN-SE-PARATOR AND ELEVATOR-FEEDER.

SFECIFICATION forming part of- Letters Patent No. 343,364, dated June 8, 1886.

Application filed Ju y 2'7, 1885.

To (2) whom, it may concern:

Be it known that I, BENJAMIN D. CRooKER, a citizen of the United States, residing at WValla Walla, in the county of Walla Walla and Territory of Washington, have invented certain new and useful Improvements in Grain- Separators and Elevator-Feeders; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in grain-separators, and is especially adapted to elevators; and the objects are to clean and purify the grain from chaff, small straws, smut, dust, and other impurities in a thorough manner by an upward air-current in expansion chambers or boxes arranged at certain intervals along a chute or inclined pipe, through which the grain passes.

The invention consists in the novel construction of certain details and the arrangement of parts, as hereinafter described, and specifically pointed out in the claims, reference being had to the accompanying drawings, and the letters of reference marked thereon.

V The same letters indicate the same parts in the different figures of the drawings, in which Figure 1 represents a perspective view of the separator attached to a bin and the chute with one expansion-chamber partly broken away. Fig. 2 is a detail perspective View of the expansion-chamber, showing the side extensionboxes. Fig. 3 is a cross-section of the same on line 00 w of Fig. 2. Fig. 4 is a longitudinal section of the grain-separator, partly in elevation. Fig. 5 is a cross-section, on line y y of Fig. 4, through the chute and looking toward the grain-bin.

In the drawings, A represents part of a bin or storage-receptacle for grain of any kind, having at its front end a narrow opening with a regulating-door, a, through which the grain passes onto a screen, B. The screen is supported on light flat iron rods 12, secured to the floor, thus rendering it capable of a slight springing or jarring motion when acted on by the arm 0, extending to a cam, ratchet, or eccentric, d, mounted on the shaft 0, operated by a belt and pulley receiving motion from any suitable motive power. As the grain is shaken Serial No. 172,738. (No modvl.)

by the jarring, the kernels fall through the perforations in the screen into a receptacle or box, D, underneath screen 13, and the smut, light dirt, 8m, are prevented from passing down with the grain, as they are blown out by an air-blast, which forms a cushion of air beneath said screen in the following manner: A rotary blower, E, supplies a blast of air to the reservoir E, from which it is conducted by suitable pipes, e, to small boxesf on each side of the receptacle D. On the insides of the boxes f are openings covered with wire-netting g, which give vent to the volume of air from the blower, and as the sides of the box D flare upwardly the draft has an upward tendency, and, coming from all sides exceptthelower, it forms an air-cushion underneath the screen, finding exit through the perforations therein. This blast is merely of sufficient power to prevent any light dirt, smut, small straws, dust, &c., from going through the openings in the screen, and to keep them on top of the same until they are carried off the lower end by reason of the jarring motion given by the cam or ratchet After the grain has been relieved from all impurities that can be thus taken out by screening it falls from the box into aspout, F, whence it may be conveyed to a weighingbin or to the head of the chute, hereinafter described. The slight blast of air will also assist in drying damp grain.

The chute consists of a series of sections, G G G, made of wood or metal, and of the form shown,Fig.1. It should be inclined at an angle of at least twenty-five degrees. Each succeeding section occupies a lower horizontal plane than the preceding one, and is united thereto by chambers or boxes H, as clearly shown in Figs. 1 and 4. The chambers or boxes H are also made .of Wood or metal, and vary in dimensions according to the size of the chute. To the lower head of each box H, against which the grain will'strike, is attached a narrow strip or shelf, h, which is intended to hold a suflicient quantity of wheat or grain to form a pyramid against the lower head of box H, and on which the descending grain falls and breaks its force, preventing any damage to the grain,by reason of striking a hard substance, or any wearing of the lower head of the box H. A space of sufficient size is left between the strip h and the end h of the upper section of the chute to insure an exit for all grain that comes down the chute and is stopped by the lower head of the box H. Openings 2' are made in the sides of said box, which lead to side boxes, 7., on the outside thereof, and thence to the next section, C". These boxes are intended to assist the egress of the grain stopped at h, so that the exit may not become clogged by a backward flow from the pyramid. The grain having been temporarily checked at h falls off from the pyramid on each side and passes out at openings 1', and by means of the boxes kenters the section G, continuing its descent to the next expansion-chamber, &c. Any chaff, smut, &e., which have descended with the grain pass through the openings 0 or open top by the sudden expansion of air in the chambers H, which tends to elevate or raise the light dust, chaff, &e., and cause its escape. Any smut, &c., still adhering to the grain will be loosened in passing through the chute by abrasion.

I am aware that grain-separators for elevators having inclined chutes in connection with an airblast are old, and therefore do not claim such, broadly.

I do not claim herein the combination of the box having the overflow openings, the shell, and the chute; nor the com bination,with the chute, the box, and the shelf, of aheap of Having described my invention, what I claim, and desire to secure by Letters Patent, is-

1. A grain-separator for elevators, comprising a sieve, means for jarring the same, springrods upon which the sieve is supported, a

, blower, air-reservoir and pipes, a receptacle,

D, spout F, and a chute consisting of a series of sections provided with expansion-chambers having openingsi and side boxes, k, all as and for the purpose specified.

2. Agrainseparator for elevators, comprising a bin having a door, a, receptacle 1), a sieve, means for jarring the same, spring-rods b, a blower, an air-reservoir and pipes, and a chute consisting of a series of sections provided with expansion-chambers having openings 2', side boxes, 7t, and shelves l1, upon which the descending grain is received, all as and for the purpose set forth.

In testimony whereof I affix inysignature in presence of two witnesses.

BENJAMIN 1). CROOKER.

Vitnesses:

H. M. CHASE, FRANK XV. PARKER.

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