US485571A - Heman a - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

H. A; BARNARD.

AIR BELT PURIPIBR.

N0. 485,571. 'Patented Nov.. 1, 1892.

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AIR BELT PUBIFIBR. No. 485,571.` y A Patented Nov. 1, 1892.

NITED STATES PATENT OEEICE.

HEMAN A. BARNARD, OF MOLINE, ILLINOIS, ASSIGN OR VTO THE BARNARD & LEAS MANUFACTURING COMPANY, OF SAME PLACE.

AIR-BELT PURIFIEYR.l

SPECIFICATION formingpart of Letters Patent No.485,571, dated November f 1, 1892. Application iiled March Z8, 1892. Serial No. 426,728. (No model.)

To @ZZ 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 Air-Belt Purifiers; and I do hereby declare that the following is a full, clear, and exact description th ereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form part of this specification, in which- Figure l is a central vertical longitudinal section through my improved air-belt purifier. Fig. 2 is a side elevation thereof. Fig. 3 is an end elevation.

This invention is a purifier for grain, middlings, 85o.; and its object is to increase the number of puritications of the material which learn be made at one passing through the machine and to separately deliver the different .grades of material and waste from the machine; to make one fan produce a continuous air-current, which will, however, be split up, so that equally-clean air will be supplied to the air-separating trunks; to provide ample dust-settling chambers, and to make one device clean both dust-settling chambers.

The invention therefore consists in the novel combination and arrangement of separating-trunks, fan, conveyers, and scraperbelts, &c., as will be hereinafter fully described and claimed.

In the drawings are shown but two separating devices, but more might be used, if desired, by lengthening the machine.

Referring to the drawings by letters, A designates the casing of the machine, closed on all sides, top, and bottom.

B is a feed-hopper in the front end and upper corner thereof, preferably having a distributing-roller b in its mouth, which delivers the material to be cleaned onto an inclined shunt-board c', by which said material is directed into the lower end of a vertical airtrunk C, extending transversely of the machine beside the hopper and depending below the same. Below said trunk is a receiving-trough H', in which is a conveyer H, by which material is carried out of the machine. The inner wall of the air-trunk-is connected to the inner side of the trough H; but air can pass up between the end wall of the casing and over the trough into the trunk and escape over the rear wall of the trunk at the l top of the casing, as indicated by the arrows.

D is a hopper beside the upper end of trunk O and communicating therewith, having an inclined bottom d, arranged to catch material ca rried up through said trunk and falling onto said inclined bottom and direct it into the lower end of a substantially-vertical airtrunk N, standing transversely of the machine and having a trough L at its lower end,

in which is a conveyer L. Troughs H L lie near together and about in the same plane and air can pass up between said troughs over trough L into trunk N, as indicated by the arrows.

Gis a fan casing or chamber beside the trunk N, and G the fan therein, and .I is a hopper at the opposite side of the fan-cham- Y ber, communicating with trunks C and N over the top of the fan-chamber, as indicated.

I is a trough at the bottom of said hopper, provided with a conveyer I. The rear side of hopper .I is formed with an adjustable por and forth, so as to increase or lessen the width of said hopper. The air can'pass over said hopper down beside and beneath trough I and then up into the fan-(casing, as indicated by the arrows. From the fan-chamber it escapes through a passage F into a chamber or passage F, extending beneath both troughs H L and thereby communicating with both trunks C N, as described. The bottom F6 of chamber F is slightly above the bottom of the casing and parallel therewith and has an opening f at its end adjoining the end of the casing, through which material deposited on the iioor of chamber F can be swept out into the chamberE. ThespacebelowthehopperJ,fancasing G, and chamber F, I call afdustset tling chamber E. The bottom of the casing is inclined from front to rear and has a trough K at its rear end, provided with aconveyer K.

M is an endless belt or belts running over pulleys or rollers M M', j ournaled in the sides of the casing near the opposite ends and just above the floor thereof. The upper part of said Ation or valve O, which can be turned back IOO belt runs through chamber F close to the floor thereof, entering said chamber through an opening f2 at the lower end of passage F', closed by a flap-valve f3, and passing from the chamber through opening f, as shown. These belts carry brushes m m., which as the belt travels alternately sweep or scrape the iioors of chambers F and E, carrying material from chamber F into chamber E and thence into trough K'. The upper part of belt M thus sweeps chamber F and its lower part chamber E. I thus dispense with any independent brushing device for chamber F. Power is applied to the fan-shaft. From this shaft motion is transmitted to the shaft of conveyer H by a belt lH2 and pulleys of such relativo size that the speed of the fan is high and of the conveyer slow. Motion may be imparted to the feed-roller b, the pulleys M M, and the conveyers L I K from the conveyer H by means of a single sprocket-chain Z and sprockets, as indicated in Fig. 2.

Fais a valve in passage F for regulating the admission of air into chamber F, and F4 is a valve for regulating the admission of air from chamber F to the separating-trunk N. In operating the device the fan is started and the air circulates continuously in the directions indicated bythe arrows. The material is then fed from the hopper into trunk C and the valve F4 is adjusted, so that the strongest current of air will be through trunk C. This current carries up all except the best and heaviest grade of material, which is deposited in trough H. The material blown through trunk C falls in hopper D and is directedinto trunk N, where the second separation is made, the second grade of material falling into trough L', the other material being blown out of trunk N over the fan-casing, where the third grade of material is caught in hopper J. The very light fluffy material and dust may be blow'n directly over hoppers D and J into the chamber E,where it will be deposited and be swept into trough K. Before the air again reaches the separating-trunks it is compressed in passage F and then expanded into chamber F, and any impurities deposited on the iioor of said chamber are removed by the traveling brushes eventually into trough K. It will be observed that the air current through trunk C can expand immediately over hopper D and the currents from both trunks C and N can expand over hopper J. Thus the deposit of material in said hoppers is facilitated and the current finds room for greatest expansion in chamber E, and the deposit of dust, dto., therein is facilitated by the downward direction of the incoming current. A secondary air-current may be established through chambers F and E and fan-casing direct, as indicated by the tailles-s arrows in Fig. l, which will assist in causing deposit of dust, &c., in chambers F and E. It is not actually necessary that the conveyers be provided with iiapvalves, as the amount of air entering or escaping through the openings thereof is not suficient to noticeably affect the operation of the machine.

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

l. The combination, in an endless air-belt purifier, of a pair of air-trunks, a hopper between the same receiving from one and delivering to the other, receptacles for the material falling through said trunks, an airchamber below and supplying air to said trunks, a fan-chamber communicating with said air-chamber, and a settling-chamber communicating with said fan and receiving air from air-trunks, and means for removing the matters deposited in the receptacles and dustchamber, substantially as described.

2. The combination, in an endless air-belt purifier, of a pair of air-trunks, a hopper between the same receiving from one and de-v livering to the other, receptacles for the ma terial falling through said trunks, an airchamber below and communicating with said trunks, a fan-chamber communicating with said air-chamber, and a settling-chamber communicating with said fan and receiving air and dust from said airtrunks, a hopper interposed between the second trunk and dust-chamber, valves for independently regulating the passage of air through said trunk, and means for removing the material deposited in said receptacles, hopper, and dustchambers, substantially as set forth.

3. The combination of the fan-chamber, the air-chamber at one side thereof, the separating device in said air-chamber, and the setthug-chamber below said fan-ohamber and airchamber, with the traveling brushes or scraper-s arranged to alternately sweep the floor of the air-chamber and dust-chamber, substantially as described.

4. The combination of the separating devices, the fan-chamber, the chamber F, andthe chamberE,extendingbeneath chamberF, with the pulleys and endless belts thereon, substantially as described, arranged so that the upper parts thereof extend through the chamber F and the lower parts of said belts are in chamber E, with the brushes or scrapers connected to said belts and adapted to alternately sweep the fioor of chamber F and chamber E, substantially as described.

5. The herein-described air^belt purilier, consisting of the casing, a feed-hopper therein, an air-trunk beside said hopper receiving material therefrom, a trough and conveyer below said trunk, a hopper communicating with the upper end of said trunk, a second air-trunk receiving material from the latter hopper, a trough and conveyer below said second trunk, a third hopper communicating with the upper end of said second trunk, a fan-chamber and fan interposed between the second trunk and last hopper, an air-chamber below and supplying air to said trunks and IOO IIO

their troughs, communicating with said fan- In testimony that I claim the foregoing as chamber, and a dust-chamber below the airmy own I affix my signature in presence of two chamber, fan-chamber, and hoppers, commu- Witnesses.

nieating with said fau-chamber, the valves, HEMAN A. BARNARD. and devices for removing material deposited Witnesses:

in said troughs and chambers, all substan- W. H. HILLHOUSE,

tially as and for the purpose set forth. C. V. GOULD. f

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