US1423047A - Bucket - Google Patents

Description

W. L. THOMPSON.

BUCKET. APPLICATION FILED AUG-3, I920.

Patentd July 18, 1922.

3 SHEETS-SHEET ll/Vl/E/VTOR W. Llhom oaom By 35 ATTORNEYS I W. L. THOMPSON.

BUCKET.

APPLICATION FILED AUG-3.1920.

Patented July 18, 1922.

3 SHEETS-SHEET 2.

w m L A TTOR/VEYS .W. L. THOMPSON.

' BUCKET.

APPLICATION FILED Aus.3, 1920.

1,423,01 Patented July 18, 1922.

3 SHEETSSHEET 3.

WITNESSES I INVENTOR N LX310!!! 3cm. @946 A TTORNEYS viral!) srarss PATENT car es. 1

WILLIAM LOVE THOMPSON, OF GREENVILLE, MISSISSIPPI.

BUCKET.

IAZEMQFHY,

Specification of Letters Patent.

Patented July 18,1922.

Application filed August 3, 1920. Serial No.-400,906.

cially adapted for transporting earth short distances.

The object of the invention is to provide a bucket of this character which will be under the complete and positive control of the operator irrespective of the material upon which it acting and which is especially controllable and adapted. to efliciently carry out the excavation or digging of hard material, serving under all conditions to effectively and etlicientlyaccumulate the material in the bucket and retain the same therein while it is being conveyed to the desired points.

Other objects and advantages of the invention reside in certain novel features of construction, combination and arrangement of parts which will be hereinafter more fully described and particularly pointed out inthe appended claims, reference being had to the accompanying drawings forming part of this specification. and in which:

Figure 1 is a plan view of the bucket;

Figure 2 is a side elevational View thereof;

.Figure is a front elevational view thereof;

Figure 4cis a transverse vertical section on line 4- lof Figure 1;

Figure 5 is a fragmentary detail perspective view of the end of the cutting bit and associated frame which carries the same;

Figure 6 is a plan view of, a modified form;

Figure '7 is a side elevational view'thereof:

Figure 8 is a transverse vertical section on line 8-8 of Figure 7; and

Figure 9 is a fragmentary detail view of the forward. portion of the side plate.

Referring tothe drawings, it will be seen that the bucket is adapted to be employed in conjunction with earth working machinery of conventional construction which employs a hoist'line F and a drag line'G. Preferably, the earth working machinery is the .typedescribed in my copending applicationSerial No. 870,202, although it may be of any other conventional type suitable for the purpose. a r

The bucket consists of a bucket body comprising side plates 10 and 11, an inclined back plate l2 secured by angle irons 13 and rivets 14 to the sideplates and itbOttOlYl plate 15 secured to the side plates and having its rear end upwardly bent as at 16, and

resting upon the lower endof the back plate (see Figure 4). The bottom may also embody the planking 15 if desired. The bottom is removable and isnot intended to be used ordinarily where the material may be moved in one direction along the ground. Suitable cross bars 17 extend between and are secured to the side plates to retain the same in spaced relation. 1

The forward portion of each ofthe side plates is cut away, as shown at 18 (see Figure 9) and to the inner side of the reduced portion 19 of the side plates thus formed an adjustable extension 20 is adapted to be secured. The extension 20 is provided with a circular series of bolt holes 21. adapted to register'with a plurality of bolt holes2l provided in the reduced portion 18 of the side plates. A plurality of bolts 22, preferably four, extend through the registering boltliolesto secure the extension in adjusted position upon the sideplates. A cross bail 23 is secured to and extends transversely between the extensions 20 tobrace and impart rigidity to the same.

. An oscillating frame is pivoted to the hucketibody and consists of apair of spaced frame members 24 pivoted, as at 25. to the side plates'of the bucket body. For this purpose the frame members are provided with a pair of spaced pivot plates 26 which embrace the reduced portion of the sideplate and receive the pivot pin 25 which extends through the spaced pivoted plate and through the side plate. The frame members carry, preferably by being formed integrally therewith, a cutting bitor blade 27 which extends entirely between and slightly beyond the frame members 24 and is by virtue of the pivotally mounted frame members pivoted to the bucketbody. The pivotal connection for each of the frame members also extends through the corresponding extension 20.

A long lever 28 is directly and rigidly connected at its front end, as at 29, to each of the frame members 24;, and the rear end of each of the levers is bent or offset upwardly, as shown in the drawings. As shown in Figures 2 and 7 the levers 28 are secured to the frame members 24 above the lower end of the frame members and above the ground. Between the long levers 28 and the ground and secured to the underside of the long levers are the runners 30 preferably of wood. Bolts 31 secure the runner 30 to the levers 28.

A rear bar 33 extends between the rear ends of the long levers and constitutes the rear bar of the frame, it being understood that the cutting bit constitutes the front bar of the frame and the long levers and frame member 24: constitute the side bars thereof. The rear extremities of the long levers or .the adjacent portions of the rear bar as desired are adapted to be connected with the hoist line F, as shown in the drawings.

A relatively short lever or pull lever 34L is pivotally connected to each of the frame members 24. In. all forms of my invention the short lever is pivoted to the frame below and radially of the pivotal connection 25 of the frame to the bucket body and the pull lever itself is constrained by suitable guiding means to operate below a certain point determined by the character of the work and the particular type of machine with which the bucket is associated. The front ends of the pull levers are adapted to be connected to thedrag line G. I

It is to be understood that for a given machine or for given conditions ofwork. the adjustment or positioning of the forward extension 20 by means of the bolt 22 and bolt circle 21 is such as will bring the longitudinal axis of the pull bars 34- approximately in. the line of normal pull of the drag line in loading, and the leverage of this pull is the distance from connection 36 to connection 25. Since the pull of the hoist line isgenerally in an upward direction. or normally approximately vertical, the leverage of its pull is practically measured by the horizontal distance between the connection 25 and the hoist line connection, or the length of the long lever. It is to be observed that moinents about connection 25, due to the drag line and hoist line pull, are opposed. For stability of the relative position of the cutting bit with respect to the containing means, as in digging these moments are kept equal. The much greater drag line pull, as in heavy digging with it, very short lever arm 36 to 25) is easily opposed by a very moderate strain on the hoist line because of its much greater leverage (33 to 35).

In the form of my invention shown in Figures 1 to a, the short lever 3a is pro vided at its inner end with plurality of pivotal openings 35 through any one of which the pivot pin 36 is adapted to selectively extend to thereby serve to pivotally connect the short lever to the frame. Corresponding pivot pin holes are provided in the frame members 2st, for receiving the pivot pin 36, and this pin is fitted in such of the holes of the pull bar 34: and the frame members 24L as will give a suitable lever arm for the drag line pull under the given conditions. This plurality of holes is for adjustment for this purpose. Since the drag line pull is approximately horizontal or nearly so, as may be adjusted (in the line of the pull bar 34), the lever arm of this pull is not measured by the distance of pivot 36 from pivot 25, but is measured bv the vertical intercept between horizontal lines passing through these pivot centers. This pull bar pivot connection makes a limited clockwise movement on pivot 25 as a center as the hoisting line israised to digging position, which movement, by adjustment of connection 36 as desired, in distance and in direction from pivot 25, is made to give either equal arms in sliding and digging or reduced arm in digging compared to the lever arm in sliding position, or vice versa. The cross bail and side extensions are each provided with an upwardly and outwardly inclined slot 37 and each of tl e short pull levers or pull bars 34 are provided with guide pins or bolts 39 operatively extending through these slots to constrain the lever to its proper motion.

In the form of my invention shown in Figures 6. 7 and 8 the inclined slots of the extensions and cross bails, and the guide bolts, are omitted and in lieu thereof the outer end of the extension carries a guide bracket 40 bolted to the extension and slidablv receiving the pull lever iii hot-h eniliodiments the side plates are provided with an upper and a lower stop or abutment L1 and 32, respectively. These stops or abutments are preferably the form of angle piece bolts to the outer face of each of the side plates and engageable with the lovers or other portions of the associating frame. The upper stop is preferably adjustable. shown in the drawings. These stops or abiitments serve to limit the oscillatory movement of the frame and the upper stop has also the function of placing the line of action of the lifting force exerted by the hoist line and long lever in such relation to the center of gravity of the bucket that when the burltet is being lowered to the ground. after having been raised by the hoist line it will seek its proper position and will not tilt or be otherwise displaced from the pro-per upright position.

In operation, the cuttin'g'bit is lllCllIlQtl with respect to the body of the bucket and to the ground. to the desired degree to vary the amount of the excavating or digging action. The position of the bucket body with respect to the ground is not disturbed and it remains firmly resting uponthe ground in perfect balance. This design is primarily for most cflicient use with the bottom removed, as in work when the material may be c:-:cavated and dragged in a more or less direct course to the point of disposal. ithout a bottom the bucket will dump more efiiciently (merely requiring to be picked up) and it will retain and. transport the ma terial efiiciently, and will be lighter, for a given capacity. Thedegree of inclination of the cutting bit is at all tiniescontrollablo by the operator by simply varying the tension of the hoist line. This is true irrespective of the hardness of the material being acted upon as the hoist line lever arm is so much greater than the drag line lever arm, as already described. and consequently a very moderate tension upon the hoist line creates a rather powerful moment tending to incline the cutting bit downwardly. 'Moreover this moment set up by the hoist line opposes the u'ioment set up by the drag line and thus by increasing or decreasing the tension on the hoist line. the inclination of the cutting bit may be varied. If the hoist line is slack the dragline pulls the cutting bit out of the ground and as the line is tensioned it thus pulls the cutting bit into the ground. When the cutting bit is out of the ground the runners engage the ground and carry the bucket, the runners being adapted for alternate engagement with the ground with respect to the butting bit.

The bucket is adaptable to any character of working conditions or earth working machinery. The necessary adjustment for this purpose being readily effected by varying the position of the extensions or changing the connection of the short lever to the oscillating frame.

I claim:

1. In a bucket of the character described, a bucket body including side plates, a back plate and a bottom plate, an adjustable extension carried by the forward end of each of said side plates, an oscillating frame carried by the bucket body including a frame member pivoted to each of the side plates, upper and lower stops secured to each of the side plates and adapted to limit the oscillatory movement of said frame. said upper stop being adjustable and serving to prop crly suspend the frame in elevated position, a cutting bit carried by the frame members, a long lever rigidly and directly secured to each frame member. a short lever pivotally connected to each of said frame members, guide means carried by the adjustable extensinus and operatively engaged with the short lever and runners carried by each of the long levers and adapted for alternate engagement with the ground with respect to thecutting bit.

2; In a bucket of the character described, a bucket body including side plates, a back plate and a bottom plate, an adjustable en tension (:arried by the forward end of each of said side plates, an oscillating frame car- 3; In a bucket of the "character described,

a bucket body including side plates, a back plate and a bottom plate, an adjustable extension carried by the forward end of each of said side plates, an oscillating frame carried by the bucket body including a frame member pivoted to each of the side plates, a cutting bit carried by the frame members. a long lever rigidly and directly secured to each frame member, a short lever pivotally connected to each of said frame members, and guide means carried by the adjustable extensions and operatively engaged with the short lever. I

4. In a bucket of the character described, a bucket body including side plates, a back plate and a bottom plate. an adjustable ex tension carried by the forward end of each of said side plates, an oscillatingframe carried by the bucket body including a frame member pivoted to each of the side plates, a cutting bit carried by the frame members, a long lever rigidly and directly secured to each frame member, and a short lever pivotally connected to each of said frame members.

In a bucket of the character described.

a bucket body including side plates, an adjustable extension carried by the forward end of each of said side plates, a bail extending between and bracing said extensions. 21 frame pivoted to the sideplates of the bucket body, a long lever rigidly and directly secured to said frame, a cutting bit carried by said frame. a short lever pivoted to said frame below the pivot point of said frame to said bucket body and guiding means for said short lever carried by said side plate extensions.

6. In a bucket of the character described. a bucket body including side plates, an adjust-able extension carried by the forward end of each of said side plates, a frame nvoted to the side plates of the bucket body, lever rigidly and directly secured to name, a cutting bit carried by said frame, a short lever pivoted to said frame below the pivot point of said frame to said larcket body, and guiding means for said shortlever carried by said side plate extensions.

7. In a bucket of the character described, a bucket body including side plates, an adjustable extension carried by the forward end of each of said side plates, a frame pivoted to the side plates of the bucket body, a long lever rigidly and directly secured to said frame, a cutting bit carried by said frame, a short lever pivoted to said frame, and guiding means for said shortlever carried by said side plate extensions.

8. In bucket of the character described, a bucket body, a frame pivoted to said bucket body, a. long lever rigidly and directly secured to said frame, a cutting bit carried by said frame, a short lever pivoted to said frame below and radially of the pivot point of said frame to said bucket body, and guiding means for said last-mentioned lever. 9. In a bucket of the character described, a bucket body, a frame pivoted to said bucket body, a lever rigidly and directly secured to said frame, a cutting bit carried by said frame, a lever pivoted to said frame below and radially of the pivot point of said frame to said bucket body, and guiding means for said la sit-mentioned lever.

'10. In a bucket of the character described. a bucket body having an extension at its forward end, a cutting bit pivotally connee-ted to the bucket body, a lever pivotally connected to the cutting bit, and guiding means for said lever carried by the extension.

11. In. a bucket of the character described, a bucket body having an extension at its forward end, a cutting bit pivotally connected to the bucket body, a drag line, means con necting the drag line and the cutting bit, and guiding means for said last mentioned means carried by the extension.

12. In a bucket of the character described, a bucket body, a cutting bit pivotally connected to the bucket body and a pull lever pivotally connected to the cutting bit below and radial of the pivotal connection of the cutting bit to the bucket body.

13. In a bucket of the character described, av bucket body having an extension at its forwardend, a cutting bit pivotally connected to the bucket body, a long lever rigidly connected With the cutting bit, a hoist line connected with the long lever,a pull lever pivotally connected to the cutting bit, a drag line connected to the pull lever, and guiding means for the pull lever carried by the e);- tension.

14. In a bucket of the character described, abucket body, a frame pivoted to said bucket body, a cutting bit carried by said frame, a pull lever pivotally connected to the cutter below the pivotal connection of said frame and said bucket body, and guiding means for said pull lever.

lVlLLIAM LOVE THOMPSON.

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