US2004637A - Bucket - Google Patents

Description

June ll, 1935. 1 B. scHAUl-:R 2,004,637

BUCKET Filed oct. 25, 19:55 z sheets-sheet 1` INVENTOR a renc@ az/er BW Za/,w

A ATTORNEY June 1l, 1935. L. B. scHAUER BUCKET Filed OCC. 25, 1935 2 sheets-sheet 2 a INVENTOR rf/z e' 5 caaa" BY Zw ATTQRNEY l Patented June 11, 1935 i UNITED sr rArE-Fr BUCKET Lawrence B. Schauer, lHuntington Park, Calif., assigner toRuth Dredger Manufacturing,Cor-Y poration, Ltd., Los Angeles, Calif., a corporation of California Application October 23, 1933, Serial No. 694,700

2 Claims.

buckets.

\ Another object is to provide a renewable wear resisting lip to protect the entire vdigging edge of the bucket from abrasion by the material in which the dredge isoperating.

Another object is to provide an improved at-r tachment means for the bucket hangers; still another object is the provision of the novel spring mechanism for closing the bucket door.y

This invention possesses many other advantages, and has other objects which may be made more easily apparent from a consideration of one embodiment of the invention. For this purpose there is shown a form in the drawings accompanying and forming part of the present specification. This form shall now be described in detail, which illustrates the general principles of the invention; but it is to be understood that this detailed description is not to be taken in a limiting sense, since the scope of the invention is best dei-ined by the appended claims.

Figure 1 is a side elevation of a dredger bucket incorporating my improvements, and shown in conjunction with a supporting conveyor chain;

Fig. 2 is an isometric view of the wear resisting lip;

Fig. 3 is a fragmentary elevation on an enlarged scale of the side of the bucket, showing the bracket for the rear bucket hangers;

Fig. 4 is a, section taken along plane 4--4 of Fig. 3;

Fig. 5 is a transverse section taken along plane 5 5 of Fig. 1;

Fig. 6 is a longitudinal section of the bucket showing the door in discharging position; and

Fig. 7 is a fragmentary section similar to Fig. 6, showing the door in normal, or closed position.

A common type of digging machine or dredger includes a pair of parallel endless chains, suitably supported as by pulleys or sheave wheels, having a plurality of buckets or scoops suspended from them. One end of each of these chains is suspended close to the material it is desired to excavate. These chains are driven so as to cause the scoops or buckets to enter the material, pick up a load as they pass through it, and carry this load to a predetermined point, where they are dumped, after which they return for another load and the cycle is repeated. It is (ol. 19a-14o) to buckets for this type ofjdredger that these improvements are directed. f

Referring more particularly to the drawings,A

the supporting chains j each consist of links 9, f

secured by bolts or pins III. A bucket is indicated by I I, and is preferablyformedfrom a'single piece of steel plate'or other equivalent material, cut and bent to the desired shape, being welded Where deemed advisable. By referring to Fig. 5`it will be noted that the sides I2 diverge orflare toward the front and are'symmetrical about the I Secured at the forward upper corner of leach of sides I2, as by rivets, is a casting I4 with an upwardly projecting ear I5 adapted to receive one of the bolts IB used for securing the chain links 9 together. At the rear of each of the side plates is another casting I6, also secured by rivets and of novel form. It includes a wall I1 (Fig. 4) arranged to lie against the side plate I 2 and a second wall I8 spaced therefrom, but joining it near its lower end. Walls I'I and I8 have coaxial bores adapted to receive a bolt or pin I9 uponv which is pivoted an arm or link 20. This link serves as a conformable support between the chains 8 and the rear part of the bucket. In this way, as bucket II passes around any supporting sheave or pulley, the distance between the front and rear supports (ears I4 and linksZ) can be shortened to correspond to the chord of the arc formed by chains 8. Preferably, the hanger or link 20 is made as short as practicable. By referring to Fig. 4 it will be evident that wall I8 serves to support the outer end of bolt I9 and to keep the'latter from being bent due to any forces which maybe transmitted by link 2U. Walls I'I and I 8 are connectedby web walls 2| (Fig. 3), for the purpose of limiting the motion of arm 20 about pin I9. Thus if the bucket II is supported as by resting on the bottom of the excavation, or if chains 8 become slack for any reason, the chains 8 will tend to drop from the position' shown in Figs. l and 6, which would cause arms 26 to turn about pins I9. The amount of this turning will be limited by one edge of arm 20 striking wall 2l as shown by broken lines in Fig. 3. In this way, since hangers 2) are short, and since stops are provided for limiting the rotation of the hangers, there is never any danger that the bucket I I will ever be urged to a position on the wrong side of the chains 8. Immediately below casting I 4 and extending to the bottom of the bucket, across the bottom between the latter and the U-bolts. The links and up the other side to the corresponding castare lobviously better adapted for wear than the ing Id is a wear resistant U-shaped lip 22 (Figs. spring, and are much `more easily replaced if 1, 2, and6). This may be a casting of manganecessary. l nese steel or kother suitable alloy, and isy secured Secured to plate 25 as by rivets is a rhomboidal in place by rivets 23, so as to be renewable when shaped cam casting 3|, having a flange 32 and a necessary. The forward edge may be reduced in web 3 3. This member 37| y is designed to coact thickness and substantiallyI sharp, so that less with aroller 34 (Fig. 6) and thereby to swing force will be required to force `the bucket through plate 25 inwardly when it'is desired to empty the material to be excavated, and to render/it, Athe bucket. This roller can be appropriately suppossible to cut through roots and similar obstrucported on the conveyor system to cause the bucket tions which may be encountered therein. j 'Y -wtogbe emptied as it reaches a'place on the con- At the upper edge of sideplates l2 near theirl Veyor system where the bucket assumes a downrear isa bolt 24 (Figs. 1,` 45Y and 7)?, extendingfward tilt.r Plate'thus acts to push the material between them, and upon which 'is Virric'nint`ed. a, Aoltw'arezly of Vthef bucket, when the cam member swinging piate 25. This formsth hacker the 3l isactilatedlby'roller 34- A pin 0r bolt 351s Sebucket. It is normally held resiliently in closed cured in'each side for the purpose of limiting the fastened at the backedge ofythe bottom, and are ends upon the links, the entire movement being position (Figs. 1, 5 and '7) as byla pair oftension swing. of jplate 25.

springs 26. t I claim: r

The manner in which these springsare at` f' 1. In combination, an excavator bucket adapttachedwill nowbe described. Intermediate the ed toubevconnected to conveyor chains, means lower edge of `plate 25 andsupporting bolt V24 forpivotally connecting the'bucket adjacent its area pair of U-bo1ts'2'l, in'each of which is a chain front and rearv toV thechains-,fincluding hangers link28, Through the link 28, the Vupper end of `for the rearowf the buket,and-Stops on the bucket spring` 26 is hooked.V Similar U-bolts 29 are lfor limiting rotation of the hangers.

Y 2.111A combination anexavator bucketadaptn also provided with links 3B1 through which the ed to be connected to'zccnveyor-chains, :means lower ends of springs 26 are hooked. These lower for pivotallyv connecting the bucket adjacent*` its U-bolts also serve as stops to limit the backward front and rear tothefchains, including (hangers swing of plate 25. 1 The interposition of links 28 vfor the rear of the-bucket, 'andears,fastened-.to and 30 kbetween the ends of spring 28 and the -U the sides of the-bucket for the hangers, said ears bolts is for the purpose of keeping the spring from having limiting y,surfaces for the motionA of the Wearing, due to the swinging .ofthe back. By hangers'fforv preventing improper motion `of the comparing Fig. 6 with Fig. 'Zit will be noticed bucket Vwithrespectv to. the chains.

that there is practically no slippage ofthe spring j j l LAWRENCE B.v SCHAUER.

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