US758511A

US758511A - Fanning-mill for cleaning grain, &c.

Info

Publication number: US758511A
Application number: US15514803A
Authority: US
Inventors: John L Doub
Original assignee: Individual
Current assignee: Individual
Priority date: 1903-05-01
Filing date: 1903-05-01
Publication date: 1904-04-26
Anticipated expiration: 1921-04-26

Description

PATENTED APR. 26, 1904;

7 J. L. DOUB. PANNING MILL FOR CLEANING GRAIN. 6w.

APPLICATION FILED IAY 1, 1903.

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No. 758,511. PATENTED APR. 26, '1904.

J. L. DOUBQ FA-NNING MILL FOR CLEANING GRAIN, 6w.

7 APPLICATION FILED MAY 1, 1903. IQ MODEL. 2 SHEETS-SHEET 2- @Vitnme J Z3 Z5 j I ha; fittoamug,

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charge of grain from the hopper.

Patented April 26, 1904.

.UNITED STATES PATENT OFFICE.

JOHN L. DOUB, OF MEYERSVILLE, MARYLAND.

FANNlNG-MILL FOR CLEANING GRAIN, ac.

SPECIFICATION forming part of Letters Patent No. 758,511, dated April 26, 1904.

Application filed May 1, 1903; Serial No. 155,148. (No model.)

To. ail whom, rlt'mrty concernf Be it known that I, J OHN L. DoUB, a citizen of the United States, residing at Meyersville, in the county of Frederick and State of Maryland, have invented new and useful Improvements'in Fanning-Mills for Cleaning Grain, &c., of which the following is a-specification. My invention relates to fanning-mills for separating and cleaning grain, seed, &c.; and its primary object is to provide a machine of this character in which simplicity and compactness of construction will bev combined with efficiency in operation and result.

The invention comprises a novel construction and relative arrangementpf longitudi; nally-reciprocating screens, improved means for regulating the flow of grain over the screens, and means for effecting the required shaking movement of the screens.

The construction of the machine will be fully described hereinafter in connection with the accompanying drawings, which form part of this specification, and its novel features will be particularly set forth in the appended claims. V

In the drawings, Figure 1 is a longitudinal vertical section of a machine embodying the invention. Fig. 2 is a side elevation of the same on a reduced scale. Fig. 3 is a front elevation of the machine, and Fig. 4 isadetail plan view of the rear end of one of the reciprocating screens employed. Fig. 5 is a detail plan view of the bell-crank lever and pitman for reciprocating the upper screen.

The supporting-frame of the machine comprises standards 1, suitably braced together, and 2 designates a fan-casing secured within the frame. This casing may be of any preferred construction and is provided with the usual hopper 3, within which is a feed-roll Land a regulating-slide 5 for controlling the dis- An inclined fender or guard 6 directs the grain from the hopper to the upper screen 7, where it is subjected to the fan-blast. The screen 7 is suspended by suitable hangers 8 within the front end of the casing, and a reciprocating motion transversely of the machine is imparted thereto by any suitable means operated from the fan-shaft 9, the latter being so pported in bearings at the rear of the frame.

I For this purpose I have indicated in dotted lines in Fig. 1 a pitman 10, having a crank connection .at one end with the fan-shaft and connected at its, opposite end to a horizontallydisposed bell-crank lever 11, which is also connected to one side of the screen.

. 12 designates the fan, which is of the usual constructionand mounted upon the shaft 9, the latter being provided at one end with a hand-crank (not shown) for revolving the shaft and fan to direct a blast of air onto the contents of the screen 7.

Below the transversely-reciprocating screen 7 is suspended a frame comprisingoppositelyinclined side bars13 and 1i,connected by ver' tical braces 15. This frame is suspended from the standards 1 by pivoted hangers 16 in such a manner as to permit a longitudinal swinging motion of the frame.

17 designates a screen supported between the upper'sid'e bars 13 of the frame and formed at its rear end with open spaces 18 of suflicient size to permit the passage therethrough of the grain which has passed over the mesh of the screen.

To retard the flow of grain over the. screen 17, a baffle 19, of canvas or other fabric, is attached to the sides of bars 13 at a proper distance above the screen to be struck by the grain as it is agitated by the shaking of the Screen.

' A screen 20 is supported loetween the lower side bars 14 of the frame.said screen, as clearly shown in Fig. 1, being inclined in a direction opposite to that of the inclinationof the screen 17. Above the screen. 20 is also arranged a fabric cover 21 to retard the flow of grain.

Below each of the screens 17 and 20 adjacent Lil ed in bearings at the front end of the frame, and a single shaft 26 is mounted at the rear end of said frame. Upon these shafts are mounted sprocket wheels 27 and 28, over which pass sprocket-chains 29. Secured to the sprocket-chains at intervals are transverse bars 30, having their opposite faces 31 beveled to adapt them to readily pass under the screens 17 and to serve as cleaners or scrapers and prevent the clogging of the screens. The revolution of the chains is effected by means of a sprocket-wheel 32, mounted on one end of the shaft 26 and connected by a driving-chain 33 with a sprocket-wheel on the fan-shaft 9.

A crank-shaft 34 is supported in bearings 35 at the rear of the frame of the machine and connected by a pitman 36 to the under side of the screen-frame. This shaft 34 is revolved by a sprocket-chain 37 and sprocketwheels 38 and 39, mounted, respectively, upon the shafts 9 and 34.

To adapt the machine for cleaning clover and other seeds, I provide at the front thereof a transversely-extending trough 40, having a groove 41 to support a removable fender 42, which projects upwardsufiiciently to catch any seeds which may be blown from the screen 7. The seeds which accumulate in the trough are automatically returned to the hopper by means of an endless elevator driven from the fan shaft by a chain 43 and suitable sprocket-wheels.

The operation of the machine constructed as thus described will be readily understood. The grain fed through the hopper falls upon the screens 7, thence to the rearwardly-inclined screen 17 Such waste as drops through the screen 17 passes to the upper trough 22, while the grain drops through the openings 18 of said screen onto the forwardly-inclined screen 20, being finally received by the trough 23.

It will be apparent that my suspended screenframe affords means for reciprocating both of the inclined screens by a single shaft connection and provides'a simple and compact structure. The relative arrangement of the screens is such as to insure a thorough agitation of the grain and an effective cleaning and separation thereof.

I would have it understood that I reserve the right to make all such variations and modifications in the details of the machine as may be resorted to without departing from the invention as defined in the following claims.

I claim 1. In a fanning-mill, a hopper, a transversely-reciprocating screen beneath the hop- 7 per, and a fan located at one side of said screen, in combination with alongitudinally-reciprocating frame, comprising screens inclined at an angle to each other; oppositely-inclined discharge-spouts, and a runway formed below each screen adapted to receive traveling;

scrapers for simultaneously cleaning the under side of each screen to prevent the clogging of said screens.

2. In a fanning-mill, a hopper; a transversely-reciprocating screen located beneath the hopper, and a fan located at one side of said screen, in combination with a reciprocating screen-frame, suspended beneath said screen, and having screens inclined at an angle to each other, arunway formed below each screen, sprocket wheels, endless sprocketchains provided with transverse scrapers, and means for operating said sprocket-wheels and chains, whereby the transverse scrapers are caused to travel through both runways and simultaneously clean the under side of each screen during the reciprocation of said screenframe.

3. In a fanning-mill, a hopper, a transversely-reciprocating screen beneath the hopper, and a fan at one side of said screen, in combination with a reciprocating screenframe, having screens located at an angle to each other, and located beneath the reciprocating screen, the upper one of the screens on the screen-frame having a grating at its discharge end; an inclined trough beneath said discharge end, and troughs beneath the discharge end of the second screen of the screenframe; and means for operating the several aforesaid movable parts, as herein set forth.

4. In a fanning-mill, a hopper, a transversely-reciprocating screen beneath the hopper, and a fan at one side of said screen, in combination with a reciprocating screen-frame beneath said screen, and having screens inclined at an angle to each other, yielding flexible strips, located adjacent to said inclined screens, and serving as bafi'les to retard the flow of grain; and means for operating the several aforesaid movable parts, as herein set forth.

5. In a fanning-mill, a hopper, a transversely-reciprocating screen beneath the hopper; and a fan adjacent to said screen, in combination with a reciprocating screen-frame, located beneath said screen,and having screens located at an angle to each other. an inclined trough beneath the lower end of the upper one of said screens, inclined troughs beneath the lower end of thelower one of said screens, and endless traveling mechanism carrying transverse scrapers bearing on the under side of said screens, yielding flexible baffle-strips located adjacent to the outer surface of said screens to retard the flow of grain, and means for operating the several named movable parts, as herein set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN L. DOUB. Witnesses:

JOHN L. ROUTZAHN, WALTER L. REMsBERe.