US470035A - Dust-collector - Google Patents

Description

(No Mod-ell) l A. C. BRANTINGHAM. DUST COLLECTOR.

No. .470',035 Patented Marl 1, 1892.

ATENT rricE.

ALLEN C. BRANTINGHAM, OF COLUMBUS, OHIO.

DUST-COLLECTOR.

SPECIFICATION forming part of Letters Patent No. 470,035, dated March 1, 1892. Application iiled March 27, 1891. Serial No. 386.720. (No model.)

To a/ZZ whom it may concern.-

Be it known that I, ALLEN C.'BRANTING. HAM, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented a certain new and useful Improvement in Dust-Collectors, of which the following is a specification.

My invention relates to an improvement in dust collecting and separating devices, and has particular relation to that class of dust collecting and separating mechanism employed in iiour or other milling establishments.

The objects of my invention are to construct an improved device of this class by means of which a thorough separation of the dust and air of a dust-laden air-currentis obtained, to accomplish this object in a simple and reliable manner, to provide in connection therewith improved means for discharging the dust collected thereby, and to produce said collecting and separating device in a compact and inexpensive form. These objects I accomplish in the manner illustrated in the accompanying drawings, in which- Figure 1 is a vertical sectional view of my improved dust-collector, taken on two planes, as indicated at and z e' of FigA 2; and Fig. 2 is a central sectional view. taken through the device on line y y of Fig. 1.

Similarletters and numerals refer to similar parts throughout the several views.

a represents the exterior casing of my improved dust-collector, which may be of the rectangular form shown or of any other desired form. Of this exterior casing b b represent the side plates or faces, b b the end plates, and b2 the top plate, said casing being supported upon a suitable base-frame c. Said pieces b ale, as shown in the drawings, provided with oppositely-located central openings, (indicated at d.) Throughthe casing c and centers of the openings. d extends a fanshaft d', which may be 'journaled in any desirable frame-work in the outer side of said casing, and which carries, as shown at cl2, a suitable belt-wheel.

Upon the shaft d is mounted centrally between the side walls of the casing d thehub c of a fan, which is adapted, as hereinafter described, to rotate within said casing. This fan consists of a number of suitable arms f,

which radiate from the hub e and fan-vanes j" upon the outer portions of said arms. The

fan thus constructed is partially incased by an 5 5 of the fan-vanes and being connected in their upper halves by a half-cylindrical cover-plate g. The inner casing-thus formed produces, as shown in the drawings, an inclosure of the upper half of the fan and two sides of the lower half thereof. The side disks g of the interior casing are formed, as shown in the drawings, with central openings, whichl are opposite the openings d of the exterior casing. As shown in the drawings, these side disks may be provided about their side openings with tubular extensions g2, which form linings for the case -openings d. Formed through the disk g and casing side plates b at opposite points within a short distance of the periphery of the inner casing is a circular slot or mortise m, which, as shown, surrounds the central openings CZ of the case,

Beneath the base-frame c and having its upper side communicating with the lower side of the fan-oasingis the approximately V-shaped upper portion or mouth of a dustreceptacle t', which extends throughout the length of the lower side of the fan-case. This dust-receptaclel communicates on its lower side with the open upper side of a trap or discharge-chamber 12, the partially-cylindrical form of which is produced by the concave opposite sides thereof. From the under sides of the concave sides of the discharge-chamber 12 lead the vparallel side walls of a downwardly-extending dust-chute 13. The dustchamber thus formed by the connection of mouth 1', partial cylindrical chamber 12, and chute 13 is provided with end-closing plates 14. Through the center .of the discharge- 4chamber 12 extends longitudinally the shaft of a dust-trapping device lc, the ends of which are journaled in the end plate 14 of the dustdischarge chamber, and from the periphery of which project at equidistant points 1ongitudinal flanges or carriers lo', which are of such width as when said shaft is rotated to IOO come into frictional contact with the interior surface of the concave sides of the discharge or trapping chamber l2. Rotary motion is imparted to the trap-shaft through a suitablyoperated gear-Wheel n upon one of the outer projecting ends of said shaft. The portions of the side casing-plates which are separated by the formation therein of the circular slots m may be connected together by suitable pins or connecting-arms s, arranged at interval in said slots. v

The operation of my device is as follows: The fan being set in motion by the rotation of the shaft d', currents of dust-laden air are drawn into the fan-case through the central openings d, from whence said dust-laden air is driven by said fans toward the inner surface of the inner casing-plate g. The force of the current being thus directed outward from the outer ends of the fan-vanes, the dust or other heavy'particles contained in the dustladen air is driven against and follows the inner surface of the plate g', while the purified air which is separated therefrom iinds an outlet through the slotted openings m of the casing, as indicated by the arrow in Fig. 2. The dust or heavier particles which follow the inner surface of the plate g' are carried downward and allowed to drop into the nio u th of the dust-chamber, from whence the dust is deposited between the rotating flanges or arms L of the trapping chamber l2, and through the rotation of said arms the quantities of dust collected between them is finally deposited through the chute 13.

From the construction and operation above described it will be seen that a suction of the dust-laden air is created toward the center of the fan through which said dust-laden currents enter the casing, and by the means described the air and dust in said currents are readily separated, one being discharged through the chamber beneath and the other through the openings m near the outer side or periphery of the case. As will readily be seen this method of separating the dust and air and collecting the former is exceedingly simple and effective and is attained without the construction or use of complicated or expensive mechanism.

I-Iaving now fully described my invention, What I claim, and desire to secure by Letters Patent, is-

l. In a dust-collecting device, the combination, With the casing having an open lower side, central inlet-openings d, and oppositelylocated side openings m near the outer sides of said case, of a rotating fan-shaft d', extending transversely through the center of said casing, and a fan upon said shaft, substantially as specified.

2. In a dust-collecting device, the combination, with the outer casing d, having an open under side, central side openings d, and circular air-outlet openings m in said Walls of said case, and interior casing g g', open on its under side and having openings opposite and corresponding with the case-openings cl and n, of arotatin g fan-shaft supported transversely through the side casing, as described, and -a fan upon said shaft, the upper half of which is inclosed by said outer casing, substantially as described.

3. In a dust-collecting device, the combination, with the casing having an open under side, central side openings d, and oppositelylocated side openings m near the outer portion of said casing, of a rotating fan-shaft d',

a extending transversely through said casing,

a fan mounted upon said shaft, a dust-chamber beneath and communicating with said casing, consisting of a portion c', a chute 13, an intervening partially-cylindrical trapping chamber 12, communicatingwith said mouth and chute, and a rotating shaft journaled Within said dust-trapping chamber, and conveying-'fianges la upon said shaft and rotated in frictional contact with the curved side Walls of said trapping-chamber, substantially as specified.

y ALLEN C. BRANTINGHAM. In presence of- BARTON GRIFFITH, C. C. SHEPHERD.

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