US648575A - Dust-collector. - Google Patents

Description

Nu. 648,575. Patented May I, I900. G. D. SCHEIFFLEB.

DUST COLLECTOR.

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No. 648,575. Patented May I, I900. G. D. S'CHEIFFLER.

DUST COLLECTOR.

(Application filed May 1, 1899 (No Model.) 2 sheets sheet 2.

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UNITE STATES PATENT ()FFICE.

GEORGE D. SOHEIFFLER, OF JACKSON, MICHIGAN.

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SPECIFICATION forming partof Letters Patent No. 648,575, dated May 1, 1900.

Application filed May 1, 1899. Serial No- '715,139. (No model.)

To all whom, it may concern.-

Be it known that I, GEORGE D. SOHEIFFLEB, a citizen of the United States, residing at Jackson, in the county of Jackson and State of Michigamhaveinvented certain new and useful Improvements in Dust-Collectors; and I do hereby declare the following to be a full,

. clear, and exact description of the invention,

. claims.

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 dust collectors, and more Particularly to such devices having a moving web orscreen of suitable material through which the air passes and by which the particles of matter suspended in the air are intercepted.

The objects of myinvention are to more effectually prevent air or particles of solid matter from escaping over the edge of the screen, to evenly distribute the air-current to the screen, to separate the heavier and coarser particles of matter from the finer ones and discharge the same from a separate conveyer, to separate the coarser particles of matter from the air before it reaches thescreen, and to provide the device with certain other new and useful features hereinafter more fully described, and particularly pointed out in the My invention consists, essentially, in the arrangement of thefcontinuous web of material forming the screen'in a series of parallel horizontal planes with suitable rolls and pro-j pelling mechanism, providing at each edge of the screen a double air-stop with dead-air space between the same and means for adjusting the air-stop to keep the same tight,

a separating and distributing chamber at one end of the machine provided with deflectingboards by which the air is distributed to the spaces between the layers of the screen and the larger particles of matter separated from the air before it reaches the screen, a brush in a separate chamber to remove the dust from the screen, and separate conveyors for the separating-chamber and the brush-charm her, as will more fully appear by referenceto the accompanying drawings, in which- Figure 1 is a side elevation of a device embodying my invention; Fig. 2, alongitudinal vertical section of the same on the line 2 2 of Fig. 3; Fig. 3, a transverse vertical section of the same on the line 3 3 of Fig. 2; Fig. 4., an enlarged detail of a portion of Fig. 3, and Fig. 5 an enlarged detail of a portion of Fig. 2.

Like letters refer to like parts in all of the figures.

A represents a suitable rectangular casing having a seriesof horizontally-extended openings A and vertically-extended openings A for the escape of the air,-and B is a chamber at one end of the casing A, which chamber receives'the dust-laden air in a downwardly-flowing current. Below this chamber 13 is a conveyer F to remove the coarser material that is separated from the air. To effect this separation and distribute the air evenly to the screen, oppositely-im clined deflectors O are provided in the chamber B. These deflectors are arranged at intervals in pairs with the apex of each pair up= ward and in the middle vertical plane of the chamber and. extending transversely across the same. Intermediately between these pairs of deflectors O are other deflectors C at opposite sides of the chamber B and having their outer edges elevated and inwardly-inclined sides. The air-current is therebyalternately deflected outwardly by the deflectors G and inwardly by the deflectors 0, whereby said current is broken up and its inertia checked and the air caused to flow laterally and equally into the alternate spaces between the parallel portions of the screen. At the same time thelarger particles in the air become separated from the same and passing downward escape through a flap-valve D and are carried out of the machine by the conveyor F.

The screen I consists of anysuitable material through which the air can pass and close enough in its texture to intercept the fine particles of dust. At each edge of this screen I is a strip of close and strong webbing I, through which air cannot pass and which serves to stretch and hold the screen flat and smooth. The outer edge of this webbing I is attached toa sprocket-chain J ,which chain serves to move the screen and furtherstrengthen and stretch the same. This chain, webbing, and screen are extended horizontally in alternate parallel planes Within the casing in 25 1, by way'o'f the' openings AA. [To tighten the screen,'the upper roll-jH-is journaled-in v horizontally-adjustable bones H it The lower, roll H.is preferably usedasa driverto move j provided-withsuitable sprocket-"wheels Kto, engage the'chainiJ. To prevent escape of'air'or dust at'the sides 3 (of thescreemribsN extend inward tro'm the 4 casing at each side of the chain and webbing, {and-to theseribsare secured the'nrain stop5 .i stripsfR,-with theirjedges close 'to the webl f bi'ng; and rolls and providedwith elastic facings' 1?, of leather, rubber, or other suitable r 1 fmateriahwhichfacings yieldi'nglyengagethe, Web a'n'dFrOIIs to-s'top-"theair and dust from passing:; ;Thislalone l find is not. sufficient,

and to furtherinsure this result I place" on f thesestrips R inwardly-projecting bosses 0,, 4 '1 providedwith'similar facing P, engaging the web, and-also provided with a flexible. edgt tically between these rolls and joined, thus forming a continuous web of much greater as many layers as convenient, and near the respective ends of the casing contact half way around rolls H and H, arranged in ver-' tical rows and distant from each other about equal to the diameter of one of the rolls,'the rolls H being in alternate horizontal planes with the rolls H. The extreme upper and I lower layers of the screen are prolonged beyond the plane of the rolls H and pass over and under rolls H H, being extended verlength compared to the dimensionsof casing closes the end of the pocket between the upper layer} of the screen and the casing, and

, partitions E and E stopfoft the air'from the "lowerchan'iber b'elowthe screen. I

air from-the-charnber B passes into each alternate pocket, and thencet-hrough the screen to the i'ntermediatepockets,-whence it escapes the screen longitudinally, an therolls being to which are attached auxiliary stop-stripsL',

-ingL,'of cloth or other suitable material, se-

cured to the'face of the strip'L at one edge and having itsfother' edgeinclined inward and resting on the web; This latter I .find very effective in preventing the passage of dust. A dead-air chamber is thus formed between the strips R andL, and if any'dust I works through into this chamber it is car-' ried by the'web and discharged downward at the end toward the chamber B through open- "other ribs N, supporting narrow-strips M,

ings at the ends of the ribs N. To take up wearand properly adjust the contact ofthe facing with theweb, I provide at the side of the web adjacent to the escape-openings A provided with elastic facing P and adjust- -ably secured to the ribs'by screws passing through transverse slots in the strips.

, r A rotative brush G is provided to engage A suitable stop L Thus the passing through the valve D to the conveyer F and alldust adhering to the'screen being re- "moved by the brush Gand going'tothe con- I veyer'F, thus efiecting a separation into two grades of. the matter removed from the air by theTmachine V, 1 l

Any convenient means for rotating the conveyersmay be utilized. 1

"what'I claim, desire tosecureby'Letters To further support :the "screen against the pressure of the air passing throughthe same, I 'I- provide bridge-bars Qzat intervals, having -rounded edges engaging the screenand extending transversely-acro'ssthe pockets at the driving-roll of thesc'reen, the brush, and the 1070 I dus'tcollectin g screeniinsaid 'casi'n g; webbing attached to each ed geof said screen tostretch gand'gs'trengthen .thegscreemrolls to "support 7 and move :the 7 screen, means for: actuating said rolls,fixed,"stop-stripsengaging one side J ofgihe webbing, adjustable stop-strips opposite the fixed stop-strips, and engaging' the other sideof the webbing, andauxiliary stopstrips, supported atadistance from thefixed [stop-strips and engaging the same side of the webbing, substantially as described,

.- 2. In a dust-collector, a casing, a'screen adapted-to permit' air to pass therethrouglr and to'retain dnst,'webbin g attached to each edge. of the screen to stretch andstrengthen the same, sprocket-chains attached to the webbing to move-the screen, a series of rolls en gaging the screenand webbing and having wheelsengaging the chains, fixed stop-strips engaging the webbing at one side, and adj ustable stop-strips engaging the other side of the Webbing, substantially as described.

'3.- In a dust-collector, a casing, a movable dust-collecting screen in the casing, webbing attached to the edges of the screen to strengthen and stretch the screen, main stop-strips engagingthe webbing near the'outer edge thereof, and auxiliary stop-strips, engaging the webbingnear the inner edge thereof, said auxiliary stop-strips being eachprovided with a flexible edging attached at one end to the face of the strip and having its other edge inclined inward and resting on the'webbing, whereby a dead-air chamber is formed between the main and auxiliary stop-strips, substantially as described.

4:. In a dust-collector, the combination with a casing, a movable dust-collecting screen in the casing, and means for moving the same, a strip of webbing attached to the respective edges of the screen, ribs on the casing at each side of the webbing, fixed stop-strips attached to said ribs and engaging one side of the webbing near the outer edge thereof, adjustable stop-strips attached to said ribs, opposite the fixed stop-strips, and engaging the other side of the webbing, auxiliary stop-strips, supported at a distance from the fixed stop-strips, and engaging the webbing near its inner edge, and elastic facings on the edges of the various stop-strips, substantially as described.

5. In a dust-collector, a case, a longitudinally-movable screen, webbing attached to the edges thereof, sprocket-chains attached to the webbing, a series of rolls engaging the screen and webbing and having sprocketwheels engaging the chains, ribs on the case at each side of the chains and webbing and supporting the stop-strips, stationary stopstrips having elastic edges engaging one side of the webbing, and adjustable stop-strips engaging the other side of the webbing, substantially as described.

6. In a dust-collector the combination of a case, a movable screen in the case, means for moving said screen, webbing attached to the respective edges of the screen, ribs on the case at each side of the screen to support the stop-strips, fixed stop-strips at one side of the webbing, adjustable stop-strips at the other side of the webbing, bosses on the fixed stopstrips, auxiliary stop-strips attached to the bosses, elastic facings on the stop-strips and engaging the webbing, and flexible edgings attached at one side to the auxiliary stopstrips and having their free edges engaging the webbing, substantially as described.

7. In a dust-collector a case having inlet and exit openings near its repective ends, a series of rolls near each end of the case arranged in parallel vertical planes and alternate horizontal planes, two rolls located outside the plane of one series of rolls, a continuous screen engaging the rolls and extending in parallel horizontal planes, fixed stop-strips engaging the respective edges of the screen at the side adjacent to the inlet-opening, and adjustable stop-strips opposite the fixed stopstrips and engaging the other side of the screen, substantially as described.

8. In a dust-collector, a case having an inlet-opening at one end, and a series of exitopenings in its sides, a series of rolls adjacent the inlet end of the case, and opposite the ends of the exit-openings, a series of rolls near the other end of the case, and between the exit-openings in the sides of the case, two rolls outside the vertical plane of the lastadjacent to the exit-openings in the case, substantially as described.

9. The combination of a dust-collector having a case, and a moving screen arranged in alternate parallel planes, the planes of said screen forming pockets alternately open in opposite directions, a casing at the inlet end of the dust-collector case, having a series of openings opposite the alternate pockets formed by the screen, inwardly and downwardly inclined deflectors at each side of said chamber and oppositely and downwardly inclined deflectors in said chamber, whereby the air is distributed equally to said pockets, and the heavier particles of the dust separated from the air, substantially as described.

10. The combination of a dust-collectorhaving a moving screen arranged in parallel horizontal planes, said screen forming pockets open alternately in opposite directions, a brush engaging the lower plane of said screen, to remove dust from the same, a casing having inlet and exit openings at its respective ends, a casing attached to the inlet end of same, deflectors in said casing whereby the air is distributed to the various pockets formed by the screen, and the heavier particles of dust separated from the air, and a conveyer below the said deflectors to carry away the dust so separated, substantially as described.

11. Inadust-collector,acase havingachamber at one end adaptedto receive a descending air-current, and an exit-opening near the other end,a moving screen between said chamber and exit-opening, arranged in parallel horizontal planes, and forming pockets alternately open in opposite directions, a brush and conveyer beneath .said screen and inclosed in a separate compartment, a second conveyer below the chamber and separated therefrom by a valve, outwardly-inclined deflectors in said chamber arranged in pairs, and at intervals, and inwardly-inclined deflectors at each side of said chamber, substantially as described.

12. Ina dust-collector, a chamber to receive a downward current of air, oppositely-inclined deflectors in said chamber, a valve at the bottom of said chamber, a conveyer below the valve, an endless moving screen arranged in horizontal parallel planes and ex tended rearwardly and vertically, stop-strips having elastic facings engaging the screen, and auxiliary stop-strips having flexible edg ings engaging the screen at a distance from the first-named stop-strips, a case inclosing the screen and having horizontally-extended In testimony whereof I afiix my signatnre openings opposite the spaces between thehoriin presence of two witnesses.

Zontal portions of the screen and. a verticallyt extended opening near the vertical pan-tot the GEORGE SC'HEIFFLER' 5' screen, rolls engaging the screen, a brush be- Witnesses; v

neath the screen, and a conveyer beneath th WM. G. GUTM'AN N;

brush, substantially as described.

OARL' FRANKE.

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