US1671017A - Pivoted bucket conveyer - Google Patents

Description

May 22, 1928.

H. DRAEG E R PIVOTED BUCKET CONVEYER 5 ll i itw Filed Set.

N\ i N May 22, 1928. 1,671,017

- L. H. DRAEGER PIVOTED BUCKET CONVEYER Filed Se 1.1

' IIIIIIIIIIA lllll May 22, 1928.

i L. H. DRAEGER PIVOTED BUCKET CONVEYER l Qwoemtoz Filed Sept.

Patented May 22, 1928.

UNITED STATES PATENT OFFICE.

LLOYD H. DRAEGER, 0F MILWAUKEE, WISCONSIN, ASSIGNOR TO CHAIN BELT COM- ?ANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN.

PIVOTED BUCKET CONVE'YER.

Application filed September 11, 1926. Serial No. 134,891.

My invention relates to conveying apparatus ofthe endless, pivotedbucket type and has for its object to provide improved means for arring the bucketswhen. in tipped or inverted position to eifect discharge of the material beingconveyed thereby, and for as sisting. in restoring the buckets to normal positions after they havebeen discharged.

In the accompanying drawings, Fig. 1 is a side view of conveying apparatus embodying my invention.

Fig. 2 is a transverse sectional view on the line II.II of Fig. 1. v

i Fig. 3 is a side view illustrating a bucket in dumping position, and the bumper which operatesto jar it just ready to deliver its blow.-

Figs. 4 and 5 are views similar to Fig. 3 except that they illustrate successively advanced positions of the bucket as it is righting itself.

In the drawings A indicates bucketswhich are receiving and transmitting elements-of an endless conveying apparatus of well known type, and B the sprocket or drive chains by which the pivoted buckets are.

supported and moved. At the joints or articulations of the chain there are rollers C, adapted to travel upon tracks F that parallel the course of the conveyer. The buckets A are supported so as to. be free to swing, upon pivots D, supported in the links of the chains and located between adjacent rollers C. Each bucket is provided at one, or each, end with a cam E that is secured fast to its outer face, which cam is adapted to engage with a stationary cam G, located adjacent to the track F and in the path of the cams E. The cam G is suitably supported and may be either fixed, or adjustable so as to be moved into or out of operative position at will, both forms of stationary cam being well known in the art.

The apparatus thus far described is of well known construction and, so far as my invention is concerned, may be variously modified or changed from that illustrated in the drawings, as circumstances or the wish of the user may suggest.

11 indicates upright supporting frames suitably supported outside the tracks F and adjacent to the stationary cams G, there hearings in which are mounted pivots 13 and 14. Links 17 are hung upon the pivots 13, being freeto swing thereon, and these links support a bar 16 that extends across the path of the conveyer and is at such height that the buckets A, when in normal or horizontal position, may freely pass beneath it. The bar 16, which acts as a bumper to jar the buckets when in inverted position as represented in Fig. 3, is preferably formed of a piece of timber of such size as to give to it the desired weight. I

15 are. depending bars supported by the pivots 14. They are so disposed that their free lower ends are in the paths of the rollers or wheels C of the chains, and are engaged thereby as the conveyer travels in the direction of the arrow, Fig. 1. The bars 15 and 17 are connected by links 18, which are preferably formed with adjusting means 19,

permitting the links to be adjusted as to length in order to insure the proper relations between. the several, parts of the bumper mechanism.

The mechanism atesv as follows:

As a loaded bucket A approaches the place of discharge its cam E engages with the sta tionary cam G, tilting the bucket into discharging position. At or about the time this engagement takes place the advance roller C of a link supporting the bucket comes into engagementwith the free end of a bar 15, swinging it, and so moving it out of its path. The motion imparted to the bar 15 is transmitted to the bar or link that supports the transverse bumper bar 16 which is thus carried forwardly and upwardly to the po* sition indicated in Fig. 3. This view shows the bucket as having been tilted, by the joint action of the cams E and G, into its inverted discharging position. For many substances the mere inversion of the bucket is suflicient thus far described operto effect the discharge, but for other sub-.

stances, that are of a sticky nature, such for instanceas moist clay used in the manufacture .of bricks. the simple tilting of the arranged to strike the bucket when in inverted position a sharp blow to jar loose any material that may be inclined to adhere to the walls thereof.

lVhile the bucket was being tilted the bars were being moved forwardly and upwardly by the rollers C, and the connections of the bars 15 and 17 cause the bumper bar to be swung forwardly and upwardly as stated. lVhen the rollers C advance sulliciently to pass the lower free ends of the bars 15, leaving them unsupported, the bumper bar falls, striking what is now the advance edge of the inverted bucket a sharp blow. This will, as stated, loose the material within the bucket. The further ad- Vance of the bucket again lifts the bar 16,

which now rests against the edge of the inverted bucket; its weight therefore tends to tilt the bucket back to normal position and holds the cams E in close working engagement with the stationary cams G. The successive position of the parts of the conveyor from the'time the bumper strikes its blow to jar-the bucket until the bucket passes beyond the line of engagement with the cross bar 16 are indicated .in Figs. 3, 4 and 5. Just before this separation, between the bucket A and the bar 16, takes place, the moving cams E pass beyond the stationary cams G leaving the bucket free to return to normal position under the conjoint action of the bumper bar and the weight of the bucket itself, which is so pivotally supported as to teng to right itself after it has discharged its 10a Under some circumstances and to better effect the discharge of some-materials it is desirable that the buckets while in tilted po sitions should be jarred, after the primary jarring incident to the stroke of the bumper bar 16. This I effect by forming the cam E as illustrated, that is with two projections 2, 3, separatedby a depression 4:; and by forming the stationary cam G with an initial hump or projection 5, a second hump or pro jection b, a depression 7 between these, an abrupt fall 8 at the end of the projection 6 a flat contact surface 9 beyond the fall 8, and a gradual incline 10 between the edge of the flat surface 9 and the end of the cam; This arrangement of cam surfaces causes a successive bumping or jarring of the bucket, less violent than that produced by the bumper part 16, as the cam E moves over the irregular face of the cam G. As a bucket approaches the cam G the projection 2 of the former first comes into engagement with the cam G and causes the bucket to be tilted until the projection 3 comes into engagement withthe upper operating face of the stationary cam, this engagement of the projection 3 first taking place within the de-' pression 7. The engagement of the projecthe bucket, lifting the projection 2 entirely free from the surface of the stationary cam. The projection 3 of the cam E rests upon the projection 6 of the cam G when the primary jar is given to the bucket by the stroke of the bumper bar 16, the position of the parts being indicated in Fig. The further forward movement of the bucket carries the projection 3 over the edge of the abrupt fall 8 of the cam G. When this occurs, the bucket being unsupported, swings backward toward its normal position until arrested by the engagement of the projection 3 with the flat face 9. Thispovsition is indicated in Fig. 4, and the movement last described results in a: slight jar being imparted to the bucket. l/Vhen the advance of the bucket carries the projection 3 beyond the forward edge of the flat face 9 of the cam G, the bucket,'being then free, swings toward its normal position until a1,- rested by the engagement of the projection 2 of the cam E with the projection 6 of the cam G, whereupon there is a second shock or jar, this position being indicated in Fig. 5, A third jar takes place when the projection 2 passes across the edge of the abrupt fall 8 and is thereafter arrestedby engagement with the flat face 9 of the cam. the projection 2 passes beyond the forward edge of the face 9 of the cam G the bucket graduallyrights itself, this forward movement being gradual, due to the shapes of the edges 10 and QO-respeotively of the cams G and E, It will be understood that the force or violence of the successive bumps or.

jars given to the bucket is increased by the engagement ofthe bumperbar with the edge of the bucket, which thus adds its weight to the bucket and not only tends to restore it to normal position but also accelerates-its movements.

It will be observed that the cam E is symmetrical, that is to say, its curves on opposite sides of a vertical line passing'through the pivot D when the bucket is in'normal, horizontal position, are similar. This permits the cam to properly functionwhichever edge of the bucket is forward, and further- 7 Then when for tilting the buckets to dumpingposition,

of a moving bumper that forcible strikes the tion 3 with the stationary cam further tiltsbuckets and causes them to be jarred when in tilted discharging position and means operated by the movement of the conveyer for operating the bumper. Y

3. In a tilting bucket conveyer the combination with tilting buckets, chains which support and move them and coacting cams for tilting the buckets to dumping position, of a swinging bumper that forcibly strikes the buckets to jar them when in tilted discharging position and means operated by the forward movements of the conveyer for swinging the bumper to an elevated position and then releasing it to permit it to deliver its stroke while the buckets are inverted.

4. In a tilting bucket conveyer the combination with tilting buckets, chains which support and move them, and coating cams for successively tilting the buckets to dumping position, of a bumper supported across and above the path of movement of the buckets, and means for successively lifting the bumper prior to the buckets coming to tilted discharging position and for releasing it and permitting it to strike the buckets while in such discharging position.

5. In a tilting bucket conveyer the combination with tilting buckets, chains which support and move them, and coacting cams for successively tilting the buckets to dumping position, of a swinging bumper supported across and above the path of movement of the buckets, and means operated by the moving conveyer for successively swinging the bumper into an elevated position and for releasing it and permitting it to strike the buckets while the buckets are in discharging position.

6. In a tilting bucket conveyer the combination with tilting buckets, chains which support and move them, and coact-ing cams ior successively tilting the buckets to dumping position, of a swinging bumper supported across and above the path of movement of the buckets, contact bars operated by the moving conveyer and connections between the contact bars and the supported bumper through which the movements of the bars cause the bumper to be moved, the

contact bars being arranged to be engaged and operated bymoving parts of the conveyer to swing the bumper into elevated position as the bumpers are being tilted and to release the bumper bar permitting it to fall and strike the buckets while in tilted position.

7. In a tilting bucket conveyer the com- I bination with tilting buckets, chains which support and move them provided with supporting wheels, tracks on which the wheels travel and coacting cams for successively tilting the buckets to dumping position, of a swinging bumper bar extending across the conveyer adjacent to the location of the cams that cause the buckets to be tilted, pivotally supp'orted contact bars the free ends of which are in the paths of movement of the wheels of the chains by which they are swung as the wheels successively pass them, and links connecting the contact bars with the swinging bumper, the parts being arranged so thatithe bumper is successively swung into an elevated position as the buck-' ets are being tilted, and is released and allowed to fall and strike the successive buckets while they are in discharging position.

8. In a tilting bucket conveyer the combination with tilting buckets, chains which support and move them and coacting cams for tilting the buckets to dumping position, of a bumper that forcibly strikes the buckets and causes them to be jarred while in tilted discharging position, the bumper being arranged to remain in contact with the bucket after delivering its jar ringstroke and assisting in restoring the buckets to their normal position.

9. In a'tilting bucket conveyer the combination with tiltin buckets, chains which support and move them and coacting cams for tilting the buckets to dumping position. of a swinging ponderous bumper that forcibly strikes the buckets and causes them to be jarred while in tilted discharging position, the bumper being arranged to remain in contact with the bucket after delivering its jarring stroke and assisting by its weight in restoring the buckets to their normal positions.

10. In a tilting bucket conveyer combination with tilting buckets, chains which support and move them and coacting cams for tilting the buckets to dumping position, of a ponderous swinging bumper bar supported above and across the conveyer adjacent to the dumpingcams, and means operated by the moving conveyer for successively swinging the bumper bar into elevated position and releasing itso it will fall and strike the bucket whilein tilted discharging position, the bumper bar remaining in engagement with the bucket after delivering its blow until the bucket passes beyond the bar, and thus assisting by its weight in restoring the buckets to normal position.

11. In a tilting bucket conveyer the combination of tilting buckets, chains which support and move them, coacting cams arranged to successively tilt the buckets into dumping position and to jar the buckets after being tilted, and a bumper that forcibly strikes the buckets while in tilted position, jarring jcctions 2 and 3 separated by a depression;

and stationary cams G cooperating with the cams carried by the buckets to tilt the latter to discharging position and to'jar them when in such position, and then to restore them to normal carrying position without their being completely revolved. the stationary cams being formed with the projections 5 and 6 separated by a depression for tilting LLOYD H. DRAEGER.

GERTIFIGATE 0 CORRECTION.

Patent No. 1,671,017. Granted May 22, 1928,10

more a. DRAEGER.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, line 129, claim 2, for the word "forcible" read "forcibly"; page 3, line 53, claim 6, for the word "bumpers" read "buckets"; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 19th day of June, A. D. 1928.

M. J. Moore, (Seal) Acting Commissioner of Patents.-

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