US252144A - Dust-collector for middlings-purifiers - Google Patents

Description

(No Modem 2 sheets-smeet 41.l

W. S. RUSSELL.

DUST COLLECTOR EUR MIDDLINGS PURIPIERS, 65o.

Patented Jan. 10,1882.

No. 252,144. mgl

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(No Model.) 2 sheets-sheet 2.

W. S. RUSSELL.

DUST COLLECTOR POR MIDDLINGS PURIFIE-RS, & l 1 No.252,144. PatentedJan. 10,1882.

N. PETERS, PhmLimognpner. wmingwn. n. c.

lhvITnnY STATES PATENT' OFFICE.

WILLIAM SJ-RUSSELL, OF NORTHFIELD, MINNESOTA.

SPECIFICATION forming part of Letters Patent No. 252,144, dated January 10, 1852,

Application tiled August 5, 1881. (No model.) i

To all whom it may concern Be it known that I, VWILLIAM SYLvEsrER RUSSELL, a citizen ofthe United States, resid ing at Northfield,` county of Rice, and State of Minnesota, have invented a new and useful Dust-Collector for lliidd-lingsPurifiers,Snc., of

l which the following is a specification.

My invention relates to certain improvements in machinery for collecting the dust from middlings-puriers, millstones, and other machinery` which produce dust in their operation; and it consists in the method and means hereinafter described, and specifically set forth in the claims.

Referring to the drawings, Figure lis a vertical section of a machine embodying my invention. Fig 2 is a plan of `a. dischargegate. Fig. 3 is aplan, and in part a horizontal section,of the machine; and Figs. et, 5, 6, and 7 are details hereinafter described. c

' A A represent aisimple rectangular framework supported upon and extending centrally over a base-board, B, and serving to supportv certain portions of the mechanism employed.

The base B may,if desired, be supported independently of or in conjunction with the machines with which my machine is intendedV to be used, and any suitable frame-work may he used.

In addition to the frame A, and co-operating therewith, there are the following principal elements of my machine: an induction-pipe,f, a hopper, g, an eduction-pipe or discharge-passage, i, intervening gates j j', a balloon or-reel, L, and knocking or jarring mechanism T, and isolating or cut-oh" mechanism R r, all of which l will now proceed to more particularly describe.

The induction-pipe f communicates directly r indirectly with the millstone or plant of milling machinery, or other machine of the character hereinbefore mentioned, and conducts or directs `the dust, impurities, light pari ticles of grain, andsimilar substances intothe hopper g, while they are intermingled with and carried by the blast of air `by which they are moved from said machines, as is usual.

The hopper g extends upwardly to the base B, where it teru'linatesA at a rib, b', which forms a substantially air-tight joint with the lower fing H, which consists of a hub and spokes, .which 'support the reel L, by which means it ,is rotated. ,c `The reel consists of a lower head, h, and an .upperheath h', connected by rods p p and q q, parallel to each other and slanted from base positel'y disposed, so' that they do not directly communicate orregister witheach other. 6o`

Upon and Within the case are the gatesjj,

which consist of hubs having curvedvanes n a', the hubs being fitted to a shaft, c, which passes through the case, as shown. The shaft c rests and revolves u Jou a ste c and is ro- 6 tated slowly by means of gear d meshing with aworm, e, mounted on shaft X,which is driven,

ft'rom any convenientsource of powerby a belt-` pulley, W. The shaft c is secured to the castto top, and about which reticulated cloth or rother suitable screening material is so arranged l* as to constitute pockets or apartments, in this instance V-shaped in cross-section and extending from one head ofthe reel to the other. (See Fig.,3.) The upper head of the reel is solid ,and imperforate, constituting, in connection with the screen-apartments, a practically airtight as well as dust-proof upper end to the reel. The lower head is open at its center, and 85, has an inner outline coinciding with the screen, l being extended inwardly in points for the support of therods q of the screen-apartments.

Withinf'the reel is supported, by the frame A, a central non-rotative rod, b, to whichare adjustably attached laterally-adjustable arms E, which support in any suitable 'manner aV cushion or guard, It, extending from the top to the bottom of the reel and having a curved face ,coincident with the circle described by the rods q. c f

Beneath the head h, and at the Vtop ot' the hopper g, is a small cushion or guard, r, supported at .its outer end by straps of iron secured to its under surface by screws or other- :oo

, being shown at s. The hoop S closes the space between the inner end of the small cushion r and the lower end of the large cushion 1t, thus constituting a separate V-shaped apartment, the top being reel-head h, the inner side heilig guard or cushion R,the outer converging sides being the screen about the posts q q p, andthe bottom being the lower head, h, the small cushion r, (at that portion between the rods q q where the head 7L is formed in points,) and the strap S.

The head h is provided with pins w, against which the arm i: on the knocker-shaft T strikes during the rotation of the head. Shaft T is provided with the knockers t t and a'retracti ngspring,, and is supported in suitable bearings in the frame-work A. The arm V andthe knookers t t are adjustably attached to the shaftT bymeans ofset-screws t',and the spring .r iscoiled about the shaft andfastened at one end to the bearing-bracket y and at the other end to a collar, a, provided with a set-screw, whereby the tension of the spring may be adjusted so as to cause the knockers to act with greater or less force.

The operation of the machine is as follows: The blast of air bearing the dust enters the hopper g by the induction-pipef, and there e'X- pands and rises into the reel through its central opening, and between the arms ofthe casting H, and between the inwardly-extending points ofthe head. During this time the heavier particlesfall by gravity to the bottom of the hopper, while the lighter substancesare carried by the air against the screenapart ments, and from the inner surface thereof solne portions of the dust may fall into the hopper by gravity when it has collected upon the screen' in quantity sufficient to overcome the pressure ofthe air which passes through the screen, leaving its burden of dust deposited thereon. As the screen moves in its slow rotation tlie successive apartments are brought over the cushion r and outside of and adjacent to the large cushion R, and these cushions or guards and the strapS cut oi or separatesuch apartments from the pressure and influence of` the. air, rendering them what might be termed dead-air chambers or apartments,a nd while l so protected and isolated the knockerst t strike l.

against one (the outer in this instance) ofthe .posts of said isolated 'apartments and byconcussion remove the accumulated dust from the inner surfaces of said isolated screen-apart.l ments, each after the lother in regular succesl sion, as they are successively brought within ing gate j rotates 'and sweeps the dust over the aperture m, when it fallswithin the gatecase K, where the gate j sweeps it around therein and over the opposite aperture, m', where it falls into the discharge-passage i, and is conducted to desired points for further operation, as usual. During this operation ot' discharging the contents of the hopper it will be observed that the air or blast has been retained within the hopper by reason of the construction, arrangement, and operation of the gates j j. The curved arms u of the gate j constitute, in connection with the inner sides lof the case K, air tight, separated, and isolated pockets or carriers, which, after they have moved a quarter-revolution, are completely bevond any influence of the blast and inaccessible thereto, and so continue until they discharge their contents into the passage t'. V

.The guards or cushions may, if desired, be extended in area so as to isolate more than a single section, and other apparent modiiications maybe availed without departure from my invention.

It is evident that by tightening the coil ofv spring by turning the collar z upon the `Shaft T, the set-screw being used to retain the col; lar in a desired position, the force of the blow ot" the knockers may beincreased or diminished, as desired.

v Having described my invention and its operation, what I claim,and desire to secure by Letters Patent, is-

1. The combination of mechanism'for conductinga blast against and through a screen, mechanism for rotating said screen, mecham/ ism rfor isolatinga portion of said screen, mechanism for jarring said isolated portion, and mechanism for isolating the substances'thus separated lfrom the blast and conducting them away from the influence of said blast, all substantially as shown and described.

IOO

IOS

2. The combination of an induction-pipe, a

hopper, and a gate-case havin-g an upper vre- `ceivin g port or aperture and' a lower oppositely-disposed discharging port or aperture, and an inclosed rotating gate adapted to register alternately with said ports or apertures, all substantially as shown and described.

'3. The combinat-ion ot' an induction-pipe, a4 hopper, a gate for closing the outlet'of the hopper, a rotating reel having an upper closed 'head and a lower open headfand sides arranged vin compartments, and cushions orguards which isolate successive compartments with mechanism for jarring such isolated compartments, all substantially as shown and described.

4. The combination of a rotating reel or screen formed in compartments, a stationary inner guard or cushion Vand a stationary lower A gua-rd or cushion, and a strap attached to thev reel-head, substantially as shown and de@ scribed. v

5. The combination of the shaft T,adjusta 'ble arm r, adjustable knock'ers tia-andadjustr3 IIQ,

252.144V I a 6. The combination of frame A, non-rotattive shaft b, adjustable arms E, and cushion or, guard R with the reel L and rotative shaft c, substantially as shown and described.

5 7. The combination of the reel L, kuockers t, and guards R r with means, substantially as shown and described, for their operation, substantially as and for the purpose set forth.

8. The combination of the reel or screen L,

ro hopper g, connected therewith, the shaft c,

and the gate-case K and gates j j', substan- `tiallly as showu and described.

9. `The combination of the reel or screen L, provided with pins u', and rotated about the fixed bar b, supported iu frame A, with said I5 frame and the kuocker-shaft T, supported in said frame and provided with the arm fv, substantially tts shown and described. l

WILLIAM SYLVESTER RUSSELL.

Witnesses:

R. Vo'N ToBEL, Jr., J. F. HUNTER.

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