US399713A

US399713A - Dust-collector

Info

Publication number: US399713A
Authority: US
Publication date: 1889-03-19
Anticipated expiration: 1906-03-19

Description

(No Model.)

T. WATSON:

DUST COLLECTOR.

Patented Mar. 19, 1889.

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TALBOT WATSON, OF BALTIMORE, MARYLAND.

DUST-COLLECTOR.

SPECIFICATION forming part of Letters Patent No. 399,713, dated March 19, 1889.

Application filed July 27, 1388. Serial No. 281,254. (No model.)

To all whom it may concern.-

Be it known that I, TALBOT \VATSON, a citizen of the United States, residing at Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Dust- Oollectors; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in dust collectors which are employed in flouring-mills and like establishments for separating the dust from the dust-laden air which is driven therethrough, and is deposited in a receptacle therefor, and which I accomplish by the devices hereinafter fully described and claimed, reference being had to the accompanying drawings, in which- Figure 1 is a perspective view of the collector. Fig. 2 is a view looking down on the devlce, a part of the top removed and show inga part of the interior in section. Fig. 3 shows a vertical section through the device, indicated by the line so .50 in Fig. 2. Fig. 4. is an enlarged detail cross-sectional view of the brushes and the casings therefor, as shown in Fig. Fig. 5 is an enlarged detail side elevation of the brush-casing, a part of one outer casing being removed and showing the shield and roller of brush, the view in this figure being indicated by the sectional line 1 y in Fig. 2.

The same figures refer to the same or similar parts throughout theseveral views.

7 denotes the outer box or casing, which is constructed of the rectangular form, the lower end of which terminates in the hopper 8, the floor 9 of the box serving to divide the hopper therefrom and likewise form a support for the vertical rollers 10, by which the straining-cloth 11. is kept in the extended. position and movement imparted thereto, the said rollers 10 being placed in the box, one near each corner thereof, as represented in Figs. 1 and 2. The cloth 11, being stretched around the outside of the said rollers and of just the depth of the inside of the box 7, forms the walls of an interior compartment, 13, and whereby an outer space, 12, will be provided completely around the inside of the box 7 between the sides of the box and the cloth. In order to render this outer space, 12, dust-tight, the cover 14c of the box is extended over that part which forms upper supports for the rollers 10, suitable projecting strips, 32, being placed around this open top 1i, against which travels the upper edge of the cloth 11, and prevents the passage of the dust therethrough, any of the devices in common use being employed to render tight the bottom edge of the cloth 11, which moves over the floor 9.

To impartmovement to the cloth 11 through the rollers 10, the spindles 15 of the rollers are extended through the cover 1i, and are provided with suitable pulleys, 16, around which passes from one roller-pulley to the other the endless belt 17, by which all the rollers are caused to rotate in unison and movement given to the cloth 11,0ne of the said spindles being providedwith a driving-pulley, 18, by which movement is imparted to the whole by steam or other power. On one side of the box is provided an opening, 19, through which the dust-laden air enters that is to be deprived of its dust, and which has been forced therethrough by a blower or some like device under a slight pressure, the dust-laden air entering the box and being distributed around the outer space, 12, thereof, and from thence, in consequence of the pressure exerted by the incoming current, the air will be forced through the texture of the cloth l1, and escape to the atmosphere through the open top of this inner compartment, 13, the air in its passage through the cloth 11 having been strained and leaving the dust particles in the outer compartment, 12, the bulk of these par ticles adhering to this side of the cloth, those particles which do not adhere to the cloth falling to the bottom of the outer space, 12, which is made in the hopper form shown in Fig. 3, a valve, 21, which is operated from outside the box, forming the floor thereofnvhereby the accumulated dust may at intervals be discharged into the hopper 8.

In order to remove those particles of dust which adhere to the side of the cloth, the re tating brushes 22 and23 are provided, which serve to brush these dust particles therefrom as the cloth passes therebetween by the movement imparted through the rollers in the manner described. These brushes 22 and 23 extend about the depth of the cloth 11, and are in contact therewith, the upper spindles thereof being extended through the top 14 of the box and provided with the pulleys 29 thereon, which may be driven by the endless belt 17, that drives the rollers, orindependent means may be employed for imparting a rotating movement thereto. The brush 22, which is placed in the outer space, 12, serves to remove the dust which has adhered to this side of the cloth 1l,the brush 23 being placed on the other side of the cloth 11 and opposite the brush 22, whereby the said brushes form a backing one for the other, and prevent any undue agitation to the cloth by the rotating movement thereof in its passage therebetween, the brush 23 likewise serving to remove any particles of dust which may have been driven through the cloth.

In order to provide a still-air compartment into which the dust is driven and allowed to quietly settle and fall into the hopper, the said brushes 22 and 23 have around them. sheet-iron shields 24, that have on the side thereof the opening 25, which extends vertically nearly or wholly the length thereof, as shown in Fig. 5, through which the dust, when released by the brush, will escape into the still-air compartment 26, formed by the walls 30, that completely ineases the said brushes and their shields 24, wherein the dust will be free from any agitation by the rotating brushes or other causes, and will quietly fall to the bottom and drop through the openings 27 therein to the hoppers, the walls 30,

, that form the still-air compartment, being ex- To facilitate the removal of the dust from the brushes and cause it to enter the still-air compartment, the rollers 31 are provided, which are supported by suitable bearings from the walls 30, in which they are free to rotate, the said roller extending nearly or wholly the length of the brush, as shown in Figs. 3 and 5, and pressing against the bristles thereof, whereby when the bristles pass thereover, moving in the direction indicated by the arrows in Fig. 4, they will be slightly bent when in contact therewith, and when released assume their straight form, thus by their elasticity causing the dust from the brush to be thrown through opening 25 in the shield and into the still-air compartment, from whence, as described, it falls into the hopper 8.

Having described my invention and the manner of operating, what I claim, and desire to secure by United States Letters Pat ent, is

1. In a dust-collector, the combination, with an upright dust-arresting cloth, means for directing the dust-laden air against one side thereof, a rotating brush for dislodging the dust therefrom, and a roller for dislodging the dust from the said rotating brush, for the purpose set forth.

2. In a dust-collector, the combination, with an upright dust-arresting cloth, means for directing the dust against one side thereof, a rotating brush for dislodging the dust therefrom, a shield, 24, provided with the opening 25 therein, placed around the said brush, and a still-air compartment formed by the walls 30, which completely incases the said brush and shield 24, for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

TALBOT WATSON.

VVit-nesses:

WM. L. BAILIE, JNo. T. MADDox.