US566737A - brantingham - Google Patents

Description

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DUST COLLECTOR.

Patented Sept. l, 1896.

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AA. G. BRANTINGHAM.

DUST COLLECTOR.

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DUST CGLLEGTOR.

Patented Sept. l, 1896.

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ALLEN O. BRANTINGHAM, OF TOLEDO, OHIO, ASSIGNOR TO THE NORDYKE du llIARMON COMPANY, OF INDIANAPOLIS, INDIANA.

DUST-COLLECTOR.

SPECIFICATION forming part of Letters Patent No. 566,737, dated September 1, 1896.

Application filed May 4, 1395l Serial No. 548,181. (No modali) To all whom it may concern,.-

Be it known that I, ALLEN C. BRANTINGHAM, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio,

have invented certain new and useful Improvements in Dust-Collectors, ofwhich the following is a specification.

My present invention consists in certain improvements in tubular dust-collectors by 1o which the great economy of space resultant from the employment of a structure circular in form is secured and the disadvantages of revolving the structure as a whole avoided.

Said invention will be first fully described,

and the novel features thereof then pointed out in the claims.

Referring to the accompanying drawings, which are made a part hereof, and on which similar letters and iigures of reference indizo cate similar parts, Figure 1 is a side elevation of a dust-collector embodying my present invention; Fig. 2, a top or plan viewof the same Fig. 3, a sectional View as seen when looking in the direction indicated by the arrows from the dotted line 3 3 in Fig. 2; Fig. 4, a horizontal sectional view looking downwardly from the dotted line :i fi in Fig. 3; Fig. 5, a perspective view illustrating a portion of the intermittent driving mechanism, on an enlarged scale; Fig. 6, a similar view illustrating another portion of said intermittent driving mechanism and showing the means particularly whereby the tension of the drivingchain is adjusted, with the parts separated,

Fig. 7, a detail view of the jarring mechanism as seen from the dotted line 7 7 in Fig. 3, but with the parts in a somewhat difterent position; and Fig. 8, a detail sectional view as seen when looking in the direction indicated 4o by the arrows from the dotted line 8,8 in Fig. 4c.

In said drawings the portions marked A represent the casing and framework of my improved dust-collector; B, the dust-collecting tubes therein 5 O, the central shaft of the operating mechanism 5 D, the driving-shaft;

E, an intermediate shaft; F, the hammer-operating shaft; Gr, the hammer or hammerblock; H, a plate for closing the lower ends of the dust-collecting tubes while the dust is 5o being dislodged therefrom; I, a sweep for gathering the dust and forcing it to the discharge-orifice, and J the shaft of the conveyer which operates in the dust-receptacle. As in many similar structures, the structure A, composed of the framework and easing of the machine, includes an inclosed chamber R at the lower end for receiving the dust-laden air and asupporting-frame for the dust-tubes B, and to said framework are secured the bearings for the various portions of the mechanism, all as shown and as will be readily understood. This structure is stationaryA in its character.

The dust-collecting tubes B are open at the lower end and communicate with the chamber R through holes formedin the top for that purpose, as shown, and are closed at the upper end, where they are connected to heads B', which are suspended to springs B2, and which latter rest on suitable bearings on the frame structure A. They are entirely stationary, except as operated or jarred by the hammer devices, as will be hereinafter more fully described. The spring-bars B2 are preferably connect-ed by an annular plate B3, as shown in Fig. 2, although this may be dispensed with if desired.

The central shaft C is adapted to be revolved preferably intermittingly, although a slow continuous movement might be used with approximately corresponding results. It has rigidly secured thereto a bevel gear-wheel O', by which, through the intermediate shaft E, it is driven, an arm O2, carrying the hammeroperating shaft and other parts, and an arm O3, carrying certain dust-gatheringdevices, at the lower end in the chamber R. It also carries, loosely mounted thereon, the doublefaced bevel gear-wheel C4, which is shown as composed of two parts secured together, although, obviously, it might be formed solid if desired.

The driving-shaft D is driven from some suitable source of power, (not shown,) and through the chain belt D' and sprocket-wh eels l and 2 drives the idle-shaftDS, which carries 95 the sprocket-wheel 3, and through it drives the chain beltD4. At its inner end said shaft D is provided with a bevel-pinion d, which meshes with the lower side of the doublefaced gear-wheel C* and imparts motion thereto, and through the same and the bevelpinion f drives the hammer-operating shaft A.

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F. By this means, when the driving-shaft D is driven, the hammer-operating shaft F is also continuously driven, while, by means presently to be described, the other mechanism is intermittingly driven. The idle-shaft D3 is carried by a frame composed of a rod 5 and arms 6 and 7. Said'rod is mounted in a clamping-bearing D5, having a fixed half S and an adjustable half or cap 9. By loosening the cap-bolts, manifestly the frame can be swung to any position desired,and the tension of the chain D4 thus regulated, as willbe readily understood. The bearing or bracket D5 is secured to the frame by bolts passing through Slotted holes, and may thus be shifted as a whole, and the tension of the chain belt D' thus adjusted. y

The intermediate shaft E, as shown most plainlyl in Fig. 5, has a Vloosely-mounted sprocket-wheel 4:,over which the chain belt D4 runs, and is also provided with fiXedly-attached spiders E', having arms e, with 'which cross-bars d4 on the chain D4 will envase.-

These cross-bars are provided at such intervals as it is desired that the shaft E shall move, and consequently while the chain D4 itself is continuously in motion the shaft E is only intermittingly driven, and through its pinion e correspondingly intermittingly drives the shaft O, with its arms C2 and C3 and-the mechanism thereon, and thus said arms andsaid mechanism are shifted from point to point as thearms e4 come in contact with the arms e', and at other timesare permitted to remain at rest. The gearing is so proportioned as that each movement shifts the hammer mechanism exactly from one setk of tubes to-theneXtset of tubes. It is also preferably so proportioned as that the timing of the strokes of the hammer is the same as to each set of tubes, or, in other words, so that the-strokes shall always be directly above the tubes while the hammer mechanism as a whole is at rest, it being thus secured that the hammer shall strike on the tubes and not between them, although this could be varied from without departing from my invention.

The shaft F is mounted in bearings formed on the arm O2, and,-as heretofore stated, is driven from the gear-wheel G4 through the bevel-pinion f. As shown most plainly'vin Fig. 7, this -shaft is provided with an arm f', which is adapted'to engage with a projection g on the hammer-block G, and thus said hammer-block is continuously alternatively raised by said arm f2, and as it escapes therefrom falls by its own gravity. Said hammerblock G is mounted on the rod G', attached to ,a small arm c2 on the main arm C2, and has a head or collar g', between which and a suitableopposing surface on the hammer-block G is a spring g2. This spring is so adjusted and arranged as that the hammer-block is justheld out of contact with the surface beneath it when at rest, thus avoiding friction between the parts as the structure revolves, while at the same time, the spring being only suliicient for this purpose, when the hammerblock `drops it compresses the spring and strikes its jarring blow onto the tube-carrying structure beneath, and thus jars the tubes B and dislodges the dust therein. The rod G is screw-threaded, as shown in Fig. 7, so that this adjustment may be easily secured and maintained.

The arm C3 on the shaft C carries the devices which gather the dust and sweep it into the conveyer. Said devices consist of the plate H and attached devices and the sweep I.

The plate H hears upon the under side of the upper side of the chamber R, and serves both to cut off the air fromy the dust-collect ing tubes while the hammering or jarring is in process and then to guide the deposited dust ontothe floor of said chamber, whence it may fall intothe receptaclebelow containing the conveyer, by which. it is carried away. This is illustrated in Figs. 3, 4, and 8, in which the plate H is shown as carried by a .weighted lever H', which holds it yieldingly in place, said lever being supportedby a knife-edge fulcrum carried by the arm C3. To -on'e side of said plate H is a guide-chute H2, down which the dust from the tube will be discharged as the plate passes from under said tube. This guide-chute is for 4the purpose ofv ydepositing thel dust onto the floor of the chamber R, protected from the air-currents, which might otherwise again force it up into the dust-tubes B. As said guidechute H2 extends substantially the whole distance between the top and thebottom of said chamber, it is an efficientv means for this purpose, as will be readily understood.

The sweep I is flXedly secured to the arm C3, and, as indicated, has numerous inclined sweeping-blades on its lower side, arranged to sweep the floor-of the chamberR, and inclined so as to draw the dustrfto a position midway between the shaft and the extreme outer edge of the chamber, where it will fall into the orifice in the floor of the chamber leading to the receptacle containing the conveyer, as is fully illustrated in Figs. 3 and 4.

The conveyer-shaft J carries a conveyer J', which revolves near the bottom of the dustreceptacle and operates continually to draw t-he dust along and discharge it out of a suitable discharging orifice or chute provided for the purpose (as J2 in Fig. l) in an ordinary and well known manner. Said conveyershaft is driven by the chainD4, as shown, and is intended to run continuously.

Having thus fully described my said invention, what Iclaim as new, and desire to secure by Letters Patent, is-

l.v The combination, in a dust-collector, of a stationary frame structure, dust-collector tubes mounted therein and disposed about a common center and having heads detached from the frame structure, springs carrying said heads, a central Vertical shaft carrying a hammer mechanismat the upper end and a tube-closing device at the lower end, and

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tubes, and positioned beneath said hammer mechanism for revolving said shaft and for operating said hammer mechanism.

2. The combination, in a dust-collector; of a stationary frame structure, including an inclosed c-hamberatthelower end for receiving the dust-laden air, and a supporting-frame for the dust-tubes; dust-tubes open at their lower ends and communicating with said dustchamber, and provided with closed heads at their upper ends; s prings carrying said heads; a central shaft carrying a hammer mechanism at the upper end, and a device at the lower end for shutting off the air from the mechanism; mechanism for intermittingly driving said central shaft and shifting the mechanism carried thereby from set to set of the tubes; mechanism for operating the hammer mechanism to jar the tubes and dislodge the dust therein; and mechanism for removing the dust from the machine, substantially as set forth.

3. The combination, with a circular dustcollector, composed essentially of a framework, a chamber, and dust-collecting tubes; of a central vertical shaft carrying a device at the lower end for shutting o the air from certain of said tubes, and consisting of an arm on said shaft, a plate bearing against the surface in which said tubes terminate, and a weighted lever whereby said plate is held yieldingly against said surface, substantially as set forth.

4. The combination, in a dust-collector, of a framework containing stationary dust-col lecting tubes arranged radially about a common center, a central shaft having an arm ixedly connected thereto at the upper end and carrying a hammer mechanism, a bevel gear-Wheel thereon by which it may through an intermediate shaft be driven intermittin gly, a loose doubled-faced bevel gear-Wheel on said shaft between said iixed gear-wheel and said arm, and a driving-shaft and hammer-operating shaft engaging with said faces of said looselymounted gear-wheel, respectively, whereby the hammer mechanism may be continuously driven, and the shaft intermittingly driven, substantially as and for the purposes set forth.

5. The combination, in a dust-collector, of the dust-collecting tubes radiallyr disposed about a common center and having heads detached from the frame structure, springs carrying said heads, a central vertical shaft carrying a hammer mechanism adapted to strike upon and jar said springs, said hammer mechanism consisting of a hammer-block mounted on a vertical slide-rod and having a projection thereon, a rotating shaft having an arm adapted to engage with the projection on the hammer-block, a spring connected to said rod and supporting said hammer-block, whereby it is held free from contact with the surface where it is to strike when at rest, but which is sufficiently yielding to permit said hammer-block as it falls to operate upon said springs and thus jar the dust-collector tubes, said hammer mechanism as a Whole being thus adapted to pass freely from set to set of the tubes without frictional contact therewith, substantially as set forth.

In witness whereof I have hereunto set my hand and seal, at Toledo, Ohio, this 20th day of April, A. D. 1895.

ALLEN C. BRANTINGHAM,

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