US435167A - barnard - Google Patents

Description

(No Modem 2 Sheets-Sheet 1.

' H. A. BARNARD.

GRAIN SEPARATOR. No. 435,167. Patented.Aug.Z6, 1890.

W/T/VESSES: MINE l/V'VE/VTOI? Frm/m/Ey.

' (No Model.) 2 Sheets-Sheet 2.

H. A BARNARD.

GRAIN SEPARATOR.

No. 435,167. Patented Aug. 26, 189(0.

WITNESSES R E/VTOR flaw MW 522mm WNMWW ATTOR/VH.

UNITED STATES PATENT OFFICE.

HEMAN A. BARNARD, OF MOLIEE, ILLINOIS, ASSIGKOR TO THE BARNARD & LEAS MANUFACTURING COMPANY, OF SAME PLACE.

GRAIN-SEPARAT'OR.

SPECIFICATION forming part of Letters Patent No. 435,167, dated August 26, 1890.

Application filed December 4, 1839- Serial No. 332,531. (No model.) i

To all whom it may concern:

Be it known that I, HEMAN A. BARNARD, of Moline, in the county of Rock Island and State of Illinois, 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 thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon,which form part of this specification, in which-- Figure 1 is an end elevation of my improved separator. Fig. 2 is a side elevation thereof. Fig. 3 is a vertical transverse section through line 5 5, Fig. 2. Fig. 4is a vertical longitudinal section through line 6 6, Fig. 1. Fig. 5 is a detaiL' This invention is an improvement in grain separators, and its object is to improve the same so that the grain will be delivered therefrom clean and dustless, to collect the screenings and impurities separated from the grain, to simplify the construction of the screenings-collecting air-trunks so that the machine can be built more compactly than has been heretofore found possible for perfeet working, to further remove the screenings collected in the trunks or chambers mechanically by conveyors, and to simplify the manner of driving these conveyors and fan from a single driving-shaft, all of which will be clearly understood from the following description and claims.

Referring to the drawings by letter, A designates the main frame, of general rectangular form, and B designates the screen-shoe lying horizontally therein and supported on ordinary spring-straps b b and vibrated longitudinally by means of pitmen C O, which are connected to the sides of the shoe and to eccentrics c c on a horizontal shaft I), lying transversely of the frame and journaled in proper bearings secured to the end pieces thereof, as shown. This shoe has an upper laterally-inclined screen E, of coarse mesh, and below this another similarly-inclined finer screen e, at the lower edge of which is an opening f in the side of the shoe, through which coarse impurities can escape off the screen 6 out of the machine. The coarser impurities escape over the side of the shoe at the lower edge of screen E. Beneath screen E are arranged wings F F, that direct the material dropping through said screen backward toward the, upper portions of screen 8. The shoe is preferably made in two longitudinal parts, the upper part carrying screen E and the lower part screen 2, as indicated, each part being actuated by pitmen and eccentrics from shaft D, preferably arranged to move one part of the shoe in one direction while the other part moves in the opposite direction. The part of the shoe carrying screen E has an outstanding receiving side board G, projecting beyond the side of the main frame and having its bottom inclined downwardly and inwardly to deliver material onto the upper part of screen E, as indicated. The bottom B of the shoe below screen e is inclined longitudinally from the end nearest shaft D to the opposite end of the frame, where it projects into the lower portion of a vertical air-trunk H through an opening in the side thereof, as indicated, so as to deliver the screened grain into the lower end of said trunk, through which it falls onto a suitable elevator or carrier or into a proper receptacle.

I designates an air-trunk just above the inner edge of side board G of the shoe and extending horizontally and longitudinally of the frame at one side thereof, being open at its lower end and communicating at its upper end with an adjoining horizontal longitudinal screenings-collecting chamber J, also lying just above the shoe and having 'its lower walls converging, as shown.

-K designates a fan-casing adjoining chamber J and communicating with the top thereof by an opening j, regulated by a valve j, which can be set in different positions to regulate the draft through the air-trunk and chamber occasioned by suction of the fan.

L designates a vertical screen or partition K designates the fan-shaft j ournaled transversely of and in proper bearings on the main frame, as indicated, and 7c is the fan secured thereon within casing K. k, is a pulley on the end thereof, by which motion is communicated to the fan-shaft from any suitable power, and cl is a belt-pulley thereon, which.

is belted to a pulley d on the end of shaft D, and thus the latter shaft is driven from the fan-shaft and the screen vibrated simultaneously With the rotation of the fan.

M designates a transverse screenings-collecting chamber above the screen-shoe and at one end of the machine between the fancasing and the upper end oftrunk H, which communicates with chamber M through an opening h at top, as shown. Chamber M also communicates with the fan-casin g through a closed compartment N on the side of the fancasing opposite chamber J, said compartment communicating direct with the fan-casing and with chamber M through an opening a, in which is an adjustable valve N, by which the draft through chamber M and trunk H is regulated. O designates a vertical partition or shield in chamber M, interposed between the openings h and n, so that material sucked into chamber M from trunk II will be deflected downward upon the bottom of said chamber, the lower walls of which converge at. bottom, forming a narrow trough, in which lies a worm convcyer P, suitably journaled in the end walls of chamber M, and forcing the material collected therein out of the chamber through an exit-opening at the outer end of the chamber, as indicated at m. The inner end of the shaft of conveyerP projects outside the chamber M and carries a small sprocketwheel 19, the upper edge of which lies about in the same plane as and in line with the bottom of the chamber J.

At the other end of the machine and opposite the chamber J is a short shaft Q, journaled in brackets q q, rising from a cross-piece of the main frame,'and on this shaft is keyed a pulley R, driven by a belt 4 from shaft D, as shown.

S designates a sprocket-wheel on shaft Q, directly opposite the end of chamber J, and T designates a sprocket-chain or endless-belt conveyer running over sprockets S and pfand thus driving conveyer P from shaft Q. The upper portion of belt T lies in and moves upon andover the bottom of chamber J, moving toward the shaft Q, while the lower portion of the belt passes beneath said chamber back to sprocket p.

it designate scraper blades or fingers attached to chain T at desired intervals, which blades catch the screenings or matter collected in chamber J and force the same forward out of said chamber onto a delivery pipe or chute U, as indicated in the drawings. The openings in the end walls of chamber J to admit the passage of the chain and its scraping-fingers are provided with flapvalves V V, as indicated, which will autoclined bottoms to 10, that direct the material Q into the lower end of trunk I through openings i in the side thereof, as indicated. The hoppers are provided with proper devices for regulating the feed.

In operation the grain to be cleaned is fed into the hoppers W, by which it is delivered onto the side board of the screen-shoe through trunk I, and in falling through said trunk it is subjected to the action of an inflowing current of air rising through said trunk induced by the suction of the fan, and anylightimpurities are drawn up into chamber J, and striking the partition therein are thrown down upon the bottom thereof and collectnntil removed by'the endless conveyor. The material falling on the shoe is screened therein, as usual, and finally delivered into the lower end of trunk H, where it is subjected to an inflowin g current of air, which carries up any light impurities and dust into chamber M, as before mentioned, and collecting the heavier impurities therein until forced out by conveyer P, while the dust is drawn into the fan and discharged therefrom.

From the foregoing it willbe observed that I subject the grain to the action of air-separating blasts previous to its screening and immediately thereafter, separate screenings collecting chambers being provided for each air-trunk, and these collecting-chambers, ly-

ing at right angles to each other, are provided with mechanical conveyers, one of which is operated directly by the other, thus dispensing with shafting or belting for driving the second conveyer. Further, by using these mechanical conveyers the collecting-chambers are positively emptied of the matter collected therein and can be made of much less depth than is necessary in the old forms, where the material accumulated until there was a sufficient quantity thereof to force the flap-valve open, frequently clogging thevalves and requiring constant watching on the part of the operator. The collecting-chambers are inclosed within the frame of the machine, which is less weighty and cumbersome and more compact than any heretofore produced.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent thereon, is-

1. In a grain-separator, a pair of screeningscollecting chambers standing at an angle to each other, in combination with a mechanical conveyer in one chamber to which power is IIQ other chamber which is connected to and operated by the other conveyor, substantially as described.

2. The combination, in a grain-separator, of a pair of screenings-collecting chambers lying at right angles to each other, with mechanical conveyers in said chambers, one of which drives the other, substantially as and for the purpose described.

3. In a grain-separator, the combination of the vertical air-trunks and the screeningscollecting chambers communicating with said trunks, respectively, but lying at right angles to each other, with the endless-belt conveyer in one of said chambers arranged to drive a mechanical conveyer in the other chamber, substantially as described.

4. The combination, in a grain-separator, of. a screen-shoe, the air-trunks, and a pair of screenings-collecting chambers lying at right angles to each other and communicating, respectively, with the upper ends of said airtrunks and with a fan-casing, with a screw conveyer in one of said chambers and an endless-belt conveyer in the other, said endless belt drivi ng-the screw conveyer, substantially as described.

5. The combination of the main frame, the screen-shoe in the lower portion thereof, the

Vertical air-trunk at the delivery end of the shoe, the air-trunk above the shoe at one side of the frame, the fan-casing, fan and fanshaft, and the screeningscollecting chainbers communicating, respectively, with said air-trunks and fan-casing and lying within the frame above the screen-shoe, with the shaft journaled at one end of the frame and driven from the fan-shaft, the eccentrics thereon and pitman-connections between said eccentrics and screen-shoe, the sprocketwheel shaft journaled in brackets above the shaft carrying the eccentrics and driven bybelting therefrom, the endless-belt conveyer running through one of said air-chambers and driven by said sprocket-shaft, and the worm conveyer in the other chamber lying at right angles to said belt conveyer and having a sprocketwheel on one end by which it is driven by said belt conveyer, substantially as and for the purpose described.

In testimony that I claim the foregoing as my own I affix my signature in presence of two witnesses.

I-IEMAN A. BARNARD.

Images