US639117A - Grain separator and cleaner. - Google Patents

Description

No. 639,117. Patented Dec. l2, m9.v

A. w. WALKER, Decd;

E. C. WALKER, Administratrix. GRAIN SEPARATUR AND CLEANER.

(Application filed Aug. 3, 1897.) No Model.) 2 Sheets-Sheet l.

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No. 639,!17. Patented Dec. l2 I899 A. w. WALKER, Decd.

E. C. WALKER, Administratrix; GRAIN SEPARATOH AND CLEANER.

(Application filed Aug. 3, 1897.)

2 Sheets-Sheet 2.

(No Model.)

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STATES PATENT Eric ALBERT W. WALKER, or SALEM, NORTH CAROLINA; ELIZA o. WALKER, ADMINISTRATRIX or SAID ALBERT w. WALKER, DEcEAsED, ASSIGNOR TO oAMILLUse. LANIER, or WINsToN, NORTH oARoLINA.

GRAIN SEPARATOR AND CLEANER.

SPECIFICATION forming part of Letters Patent No. 639,117, dated December 12, 1899. Application filed August 8,1897. Serial No. 646,961. (No model.)

.To all whom, it may concern:

Be it known that I, ALBERT W.-WALKER, of Salem, in the county of Forsyth and State of North Carolina, have invented certain new and useful Improvements in Grain Separators and Cleaners; and I do hereby declare the fol lowing 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 anduse the same.

This invention relates to grain separators and cleaners; and it consists, essentially, of an inclined rotatable cylinder having a specific internal construction and arrangement, together with a novel form of shoe and afan and operating mechanism.

The invention further consists of the details of construction and arrangement of the several parts, which will be more fully hereinafter described and claimed.

Heretofore grain separators and cleaners have been used in which was employed a revolving cylinder, composed of a perforate cylinder of metal having a surrounding jacket of textile fabric, metallic plates, or leather, or a perforate cylinder having a surrounding coating of cement protected by an outer jacket has also been used.- These devices have been more or less unsatisfactory in their use; and the object of the present invention is to overcome the disadvantages heretofore encountered by simplifying the construction and arrangement of the cylinder, together with the attendant parts coacting therewith, and materially reducing the expense of manufacture as well as increase the facility of separating and cleaning grain.

In the accompanying drawings, Figure 1 is a central longitudinal section of a separator and cleaner embodying the invention. Fig. 2 is a detail perspective View of the improved form of chute. Fig. 3 is a front end elevation of the machine, partially broken away. Fig. 4 is a transverse vertical section of the machine. Fig. 5 is a detail perspective view of a portion of the cylinder, showing the interior construction and arrangement. Fig. 6 is a detail perspective View of a part of the device. Referring to the drawings, wherein similar numerals of reference are employed to indicats corresponding parts in the several views, the numeral 1 designates a base of suitable construction, having rising therefrom uprights 2, supporting a top frame 3. Over a portion of the front of the machine and attached to the uprights 2is a supporting-plate 4, and in connection with both sets of. uprights at the front and rear of the machine are transverse rests 5 and 6, which carry rollers 7, engaging the opposite flanged ends 8 of a cylinder 9. The said rest 6 is arranged lower than the front rest 5, and the rollers 7 have rotatable bearing in connection with said rests adjacent to their outer ends and are preferably conical in form to retain the flanged ends 8 of the cylinder 9 in connection therewith and against longitudinal. movement. On the front end of the cylinder is a gear-rim 10, which meshes with an adjacentlysituated pinion 11, mounted on the end of a power-shaft 12, having an operating-crank 13 secured thereto and located on the outer side of the supporting-plate 4. The said power-shaft 12 extends through the frame of the machine at an angle of inclination and carries on the rear end thereof a gear-Wheel 14, which is in mesh with a. smaller gear- Wheel 16 on the shaft 17. On the rear end of the said shaft is a belt-Wheel 18, of larger dimension than the wheel 16, which is engaged by a belt 19,which also surrounds a lower belt- Wheel 20 on a shaft 21, extending into a fancasing 22, upon which a fan of suitable construction is mounted. By operating the crank 13 the cylinder 9 is rotated and also the fan in the casing 22. The said cylinder 9 has an outer metallic surrounding jacket, on. the interior of which are secured longitudinal metallie plates 23, having perforations regularly arranged therein and removably secured by bolts 24, which pass through the same and the said jacket. The said plates 23 may be of any number, but entirely surround the interior of the cylinder,and are held down closely against the curved surface thereof and are prevented from buckling or becoming misshapen through the operation of the cylinder or from other causes. The said plates do not extend entirely from end to end of the cylinder, and the openings therein are closely arranged and of any desired size, but of such dimension as to receive small grains, such as cockle and broken wheat or other material, which may be placed within the separator and cleaner. WVithin the said cylinder is adjustably mounted a trough 25, having a supporting-bar 26, attached to the bottom thereof and one of the ends extended through the supporting-plate 4. The opposite end of the said bar 26 extends through a rear support 27, and the said ends of the bar are each engaged by heads 28, having slots 29 therein, through which pass adjusting-screwshavingthumb-nuts 30. The heads 28 permit the bar and the trough carried thereby to be adjusted laterally in the cylinder, so as to be drawn closely against one side of the interior portion of the said cylinder, as may be desired. The rear end of the cylinder communicates with a chute 31, arranged over a box or receptacle 32, resting on the base 1, and extending at right angles from the said chute isa trunk 33 of the fan-casing 22. The said chuteis arranged in the form of a hopper, as more clearly shown in Fig. 3, and at the point where the trunk 33 engages therewith the adjacent wall is overhung, as at 34, to prevent the grain passing through the chute dropping on the lower wall of said trunk.

The front lower portion of the cylinder has a deflector 35 extending thereinto, which is located at the lower end of a front chute 36, and communicating with the said front chute is a shoe carrying a top screen 35, with which a feed-hopper 36 has communication. The shoe is formed with opposite sides and carries a perforate plate 35, as clearly shown by Fig. 2, and a laterally-projecting trough 37. A guard-strip 38 extends diagonally across the front of said top screen 35 and is continued out over the trough 37, the latter communicating with the screen through an opening 39 in one side. The upper end of the shoe is supported on a cross-strip 40, and removably attached to the bottom thereof is a bottom plate 46, carrying a fine screen 41, which is held to the shoe by a connecting-bolt and thumb-nut 42 and at its lower end is provided with a delivery-board 44, terminating at the transverse slot 45, which is located over the upper end of the chute 36. The bottom plate 46 has a metallic trough 47 projecting laterally from one end thereof, the said trough be ing arranged at an angle of inclination and communicating with a chute 48, leading to a box or receptacle 49. To the front end of the shoe a leather thong 50 is connected and depends from an upper part of the frame, and extending across the top of the cylinder at the front end thereof is a knocker 51, consisting of a shank52, pivotally mounted on one side of the frame and havinga curved extension 53, with an outer nose '54 of rounded form, and which normally rests upon the rimgear 10 and is Vertically moved or reciprocated thereby. The movement of the said arm is imparted to the under side of the screen 41 and to the entire shoe by theextension 53, and at the point where the latter strikes the under side of the frame of the screen 41 a rubber buifer or cushion is located to secure a noiseless operation, as well as prevent wear by contact of the parts. The

curved formation of the extension 53 permits un retarded movement of the rim-gear 10 and the cylinder, and at the same time of itself has vertical movement to vibrate or shake the shoe. The screen 35 is preferably continuous with the front part of the shoe, which has a delivery-board 44 and a cross-slot 45 therein, and the frame carrying the wiregauze 43 has the front end beveled and abuts against a similar shoulder on the deliveryboard 44. By this means the said screen 43 can be replaced at any time by another of a different mesh.

In operation the grain to be separated and cleaned is run into the hopper 36 and from thence strikes the screen 35 which separates the chaff from the grain, the latter passing through said screen to the screen 41. The chaff from the said screen 35 passes out through the trough 37 and is deposited at one side of the machine or may be conveyed from said trough by suitable devices commonly employed in the art. The grain which falls upon the screen 41 is again separated, and the smaller grain passes through the said screen into the laterally-projecting trough 47 and thence into the chute 48 and to the box or receptacle 49. The larger grain falls over the delivery-board 44 and through the cross-slot 45 into the chute 36 and from thence is carried by the deflector 35 into the bottom portion of the front end of the cylinder 9. The rotation of the latter, if wheat is being separated and cleaned, raises the cockle and broken grains of wheat and deposits them in the trough 25, While at the same time the perfect grains of wheat are shifted or gravitate towards the lower end of said cylinder and pass into the chute 31 and from thence into the box or receptacle 32. The fan in the casing 22 operates to draw the air gradually through the bottom of the chute 31, and by this means dirt or other 'matter carried by the wheat is separated therefrom and drawn through the trunk To regulate the fan, a gate 56 is mounted in the outer end of the said trunk 33 and is operated by an exterior handle or analogous device 57. This gate controls the suction of the fan and prevents too stronga drawing action on the grain passing through the chute 34. The perforate plate-sections in the cylinder 9 may be replaced by others when desired, and the openings therein will be proportioned corresponding to the grain operated upon-that is, if it is desired that a certain grain pass through the cylinder the openings will be smaller than the said grains. The trough 25 will be relieved of its contents from time to time, and the dimensions of the device may be varied. Also, suitable power may be applied to the drive-shaft 12 for operating the a chute having a deflector leading from shoe to the interior of the cylinder, a rim-gear connected with the upper end of the cylinder, and a kn'ocker having a nose impinging the rimgear arranged below the shoe to impart motion to said shoe, substantially as described.

In testimony whereof I have signedthis specification in the preseneeof two subscribing witnesses.

ALBERT XV. WALKER. Witnesses:

E. H. BOND, EDWD. B. FOX.

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