US837743A - Dust-collector. - Google Patents

Description

'No- 837,743. PATENTBD DEC. 4, 1906.

' W. W. SLY.

DUST COLLECTOR.

APPLIUATION FILED MAB..2Z. 1905.

2 SHEETS-SHEET 1.

GA3 i A' in vena?? Wzfzec'o'ek pATENTED DEG. 4. 1906.

i VW.. W. sLY.

DUST COLLECTOR. APPLIUATION FILEDA M-AB.22.1905.

Aing the screens, and

cl2, into which the WILLIAM W. sLY, or cLEVELAND, cino.

DUST-COLLECTOR. i

No. semi/4a.

Specification of Letters Patent.

PetentediDec. 4, 1906.

Application filed March 22,1905. Serial No. 251,369.

To LZ whom it may concern/ Be it known that I, IVILLIAM IV. SLY, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Dust-Collectors, of which the following is a full, clear,'and exact description, reference being had to the acconipanying drawings The object of this invention is to provide a simple and durable dust-collector wherein the screens shall be so arranged that it shall be im ossible for the dust to leak through into the c ean side of the collector and there shall be el'icient means for shaking the screens to cause the dust to drop ofi' ofthe saine.

The invention, which is an improvement on my prior patent, No. 710,624, comprises the means for securing the screening-canvas in a dusftight mannerI the means for holdthe means for shaking them, all ol which is hereinafter moiefully described and which is deiinitely set out in the claims.

In the drawings, Figure 1 is a vertical scction through my dust-collector, the same being broke-n away intermediately. Fig. 2 is a perspective view of the su )port for the screens. Fig. IS is a vertical cross-section through such support. Fig. f1 is a plan View, partly broken away and sectioned, Vthrough some o the screens. Fig. 5 is a vertical cross-section through the upper and lower portions el: the screens, showing the method ot' securing the canvas. liig. (j is a horizon tal cross-section through the screen at its exit side.

As shown in the drawings, A represents a suitable chamber which receives the dustladen air and carries the screens i'or removing the dust. The screens IS are placed vertically within thisl chamberside by side in such a way that their abutting edges constitute a partition dividing the chamber into the receiving portion (L and the exit portion 11.. At the base ofthe receiving portion is :i hopper dust descends. A suitable opening a3 allows the entrance ol' the duste laden air into the receiving-chambcr, and an opening a* allows the removal ol the A suitable suction-ian is connersed ith this opening. The onl;Y |mssnge-\\:.r lor'Y lhc nir from the chamber o is 'through te screens.

pure nir.

the air is filtered, the dust remaining on the outside of the screens .in the chamber o.

Each screen consists of a rectangular frame having top members b, bottom members front vertical edges b2, and rear edges provided'by the members b3. On 'opposite sides of this frame are secured sheets b4 of canvas. The horizontal members Z) and b el the frame are tapered toward apoint away from the end Where thescreens are secured, and there is thus left b'etween the screens space at their free end, Aso that the air enters at the bottom and top and at the free vertical edge of the screens, as indicated by The air then passes through the canvas Zr* and out through the opening b5 at the rear edge of the screen between the two frame members b3. The dust is thus letton the outer side of the canvas b4 and descends into the hopper, the pure air passing out through the opening a, The frame members b of successive screens abut each other vand are secured together by staples 612, making acontinuous )artition across the chamber. A cloth padding b passes entirely around the outer edges of the rear members 1) to make a dust -tight connection between them and with the supports.

In ordefito shake loose thedust which col lects on the outer side of the canvas b4, I provide a support for the screens' which is adapted to be vibrated, shaking the screen sufficiently to dislodge the dust. This support consists of a horizontal board oi' pla te C, extending across the chamber A and carrying on iis upper side a groove, in which the lower ends l1 ot the screen members l1 stand. rlhis groove 'may be provided by an angle-iron e and n bar c behind it. 'llliis structure is snpported on springs c?, which rest on bottom board c. rlliel springs are U-shaped and face in opposite directions, being secured at suitable intervals between the boards c and blocks (A oii the under side of the board C. By this ineansthe support may be given. an up-aiul-down motion as well as a forwardand-baek motion.

'lo allow the screens to move when the sn pport is lvibral ed, l secure the upper projectingr ei'idis til" the numbers b in a groove cai'- ried by n rross-bar l), which extends from side to sideol' .the casing and is guided in a bracket ([,fd'e'pciiding l`rom the rool' et thc clmmber. The dust prevented from passthe arrows in Fig.

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ing from 'one side ofthe chamber to the other at the supports by reason of the canvas d.

and c, secured from: the-roof to thernernber and vertically across the springs at the ase. Y

To vibrate'the screens, I mount on the board Cy bearings e, in which is journaled a shaft E. This shaft is cut down eccentrically at its bearin s, as shown at e', so thatl when it is rotate by a suitable belt-pulley (rietlshown) -it'is out of balance and itsY inertia I the'weight of' the dust'which' collects on them',

frame' in va very 'secure manner,

it is essential that-thecanvas'bbe held to the as VWell as in amanner which shall be'dust-tight.- This I accomplish` as-follows: In each 4oi the frame members bandi b"I make a groove b", and the carwasdsstretched across the 'trame andsecurely tacked thereto at if beyondl the grooves. Then -a Ipiece 0fcord is'forc'ed into the' groove, pressingtle canvas beneath it, and thgfcord'istacked in' place in the groove. B'y this-means the canvasis not only drawn verytight, but it is'securely held, so that the vibration/does not'shake it loose, 'and'it is madedustLtightyso'thatfnodust can werk in between the' canvas; and thelframe members and pass into the screen.` At thefront'and back'- ends ofthe screen' ther canvas is' tacked atbs to the respective members and' is then drawn tight and securely held by strips of wood 11, whichv are'secured in 'rabbeted edges of' the members b"x and b3, respectively.l A duets-tight and' effective securement; is* thus m'a'rleat these edges of the canvas.

Thesecurementlof the edges of thecanv-as in such'mann'er that it shall betaut and dusttight and firmly held is'extremely-important,

fora considerable Weight of dust collects on the ,canvasyand the' vibration of the canvas with this dust on it causes considerable strain.' If' theI canvas were at' `all slack, the ef'ect'of the vibration ywould bem-uch worse, andv if thesecurement were not ve tight the canvaswould soon tear'loosesuihciently to let'dust ass into the' interior of the screen. I have ound by practice that' theV means sho-wn ,and above'described are extremely el'lieient for the purpose intended.

By setting the cams of the screens in from the edge not only is it protected against chaiing when sl'iipped, but 1n use clear space is provided between the screens at their supported edge, so that the dust will not clog at this point, but will pass down freely:

Having described my invention, I claim- 1. In a dust-collector, in combination a horizontal support mounted on springs and a series of' vertical screens mounted at their rear edges on said support.

2. In a dustcollector, in combination a pa/rcof horizontal'supports one above the otherl and onef mounted. on sprinvs, and a series' of vert-ical screensl mountedl attheir rear edges on said supports.

3. In a .dust-collector, the combination of a casing', a series oi springs supported `'irom vthe iioor of the casing, a support resting upon said springs and extending across the casing and a series of screensin' dust-prooi contact along their'rearedges and supported at'sa-id rear edges uponA said support.

4. In a dust collecto`r, theconrbination et a casing, a support) therein 'extending across the same, a series of screens-resting u on said supportll and placed side-by side?, ami-having their abut-tin edges forming: a partition across the casing; springs supported onthe Hoor of the casing"and interposed between itand the said support", a support iort'he u per ends of the screens extending across t e casing' and flexible means for preventing the passagejof dust between said' support and the loor and top ofthe casing,

5. In a dust-collector, the combination of a casing, a plurality of rectangular yframes therein, the rear member of each having an o ening through it, screens sccured'to both sides of each of'said frames, a horizontal support onWhic-hthe real ends of said frames are supported, springs upon which said support is supported, a screen ce secured at its edges and spannimgglh they space occupied by said s rings, ahorizontal support engaging with t 1e tops oi' the rear part-soi' said rectanguiar frame, said upper support and connected with the casing, and a screen connected with the roof oi thc casing and with thc upper support and spanningthe space between them. l

ln 'testimony whereof l ncreunto ui'lix my slgnaturc in the presence of two witnessesu Vi'l'lilrliibl il. Siri'.

Witnesses:

ALBERT l-I. Barns, l). E. Nixon.

a guide-bracket engaging with IOO

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