US2158061A - Dragline bucket - Google Patents

Description

I May 16, 1939. H. J, ATKINS El AL 2,158,061

DRAGLINE BUCKET Filed June 14, 1937 2 Sheets-Sheet l Hc]. (997% i715 aMa onrzer INVENTOR ATTORNEY May 16, 1939. H. J. ATKINS ET AL DRAGLINE BUCKET Filed June 14, 1937 2 Sheets-Sheet 2 [ZJJYH 671M6 0 ATTORNE Patented May 16, 1939 2,158,06I

UNITED STATES smear OFFICE DRAGLINE BUCKET Harold J. Atkins and Charles M. Conner, Chico, Calif.

Application June 14, 1937, Serial No. 148,206

2 Claims. (Cl. 37-136) This invention relates to drag line buckets and have chains 13 connected thereto, the chains behas for an object to provide a novel lid for fully ing connected to a link I4 which in turn is conclosing the forward or loading end of the bucket nected to the hoist cable l5 of a derrick boom l6 so as to enable the operator to hold the bucket for raising and lowering the bucket.

5 full of any kind of material at an angular pitch The novel feature of this invention resides in 6 of 45 f r the lid and hoist power controlling means there- A further object is to provide a novel lid and for for automatically closing the forward or loadoperating mechanism therefore which will permit ing end of the bucket each time it has been loaded a full bucket being picked up at any point beand is being elevated to transport the material 10 tween the machine and the end of the boom and to any predetermined point between the machine 1 which will permit of articles too large to go into and the end of the boom, the lid being held fully the bucket, such as stumps, logs, stone, ore, coal closed by the hoist cable and thereby increasing and so forth being picked up by clamping the lid the efficiency and capacity of the bucket. against the article after the bucket is dragged Said means consists preferably in the provision under the article. of a lid ll adapted to form a closure for the front A further object is to provide a device of the of the bucket and being of hoe-like contour. The class described which may be formed of a few lid is provided with a pair of spaced arms l8 strong simple and durable parts, which will be inwhich extend from the top of the lid at the sides expensive to manufacture, and which will not thereof rearwardly toward the top of the bucket easily get out of order. and are pivotally connected to the top of the 20 With the above and other objects in view the bucket side walls intermediate the ends thereof invention consists of certain novel details of conby pivot pins i9 which are carried in brackets 20 struction and combination of parts hereinafter which are mounted on said side walls. The arms fully described and claimed, it being understood 18 are formed integral with lever arms 2| which that various modifications may be resorted to are inclined upwardly toward the front of the 25 within the scope of the appended claims without bucket as shown best in Figure 3 and at the updeparting from the spirit or sacrificing any of the per ends are bent inwardly as shown at 22 in advantages of the invention. Figure l, to converge toward each other and In the accompanying drawings forming part of thence are terminally bent parallel to provide So this specification, terminals as shown at 23 to receive between them Figure 1 is a side elevation of the bucket showthe end of a trip cable 24 which latter is firmly ing the lid held closed by the hoist cable while the secured in place by a bolt 25 p d rou h an drag line is held taut, preparatory to dumping eye 26 formed on the cable. the bucket. The trip cable 24, as best shown in Figure 1,

Figure 2 is a side elevation of the bucket showextends forwardly toward the front end of the ing the same dipped downward to dumping posibucket where it passes over a sheave 21 which is tion upon slackening of the drag line, the trip carried by arcuate bracket arms 28 which extend chain tightening as the bucket is tipping downupwa dly from the front ends of the side Walls of ward to open the lid wide open and hold the same the bucket. The trip cable thence passes over a open when the bucket is in dump g position. sheave 29 carried by the beforementioned link I4 40 Figure 3 is a side elevation of the bucket showand is terminally secured to the conventional ing the parts after loading and with the lid drag line 30 by a ring 3!, as best shown in Figclosed by tension of the hoist cable preparatory ure 1.

to elevating the bucket to dumping position. To the same ring a pair of cables 32 are se- Figure 4 is'a plan view of the bucket and lid cured and form a part of the trip cable, these 45 shown in Figure 3. cables passing over sheaves 33 which are mounted Figure 5 is a detail sectional view taken on the on the side walls of the bucket near the rear ends line 55 of Figure 4 with the lid and other parts thereof and these cables are adjustably secured removed, to the lever arms 2| by respective clevices 34 Referring now to the drawings in which like which are selectively receivable in a row of open- 50 characters of reference designate similar parts in ings 35 formed in the lever arms 22. the various views, I0 designates a drag line bucket A P r Of drag Chains 35 e S cured to the having the usual cutting teeth II at the front end g 3! and at the rear ends are secured to bolts thereof. Suitable brackets l2 are secured to the 31 carried by brackets 38 that project from the rear ends of the side walls of the bucket and front edges of the side walls of the bucket. When d5 loading, the initial pull of the drag line pulls the cables 32 forwardly and rocks the lever arms 22 of the lid rearwardly toward the rear wall of the bucket and thereby elevates the lid l1 and holds the same elevated and during further pull the drag chains 36 are tensioned to pull the bucket forward through the material to be loaded.

After loading when the drag line is held slightly taut and simultaneously the hoist cable is pulled, the cables 24 are pulled rarwardly and rock the lever arms 22 of the lid forwardly to close the lid and hold the lid held tightly closed to retain a full load while the bucket is being elevated. It will be observed by referring to Figure 1 that the full bucket may assume an angular position of 45 or more without spilling any of the contents.

A trip chain 39 is secured to the upper ends of ,the lever arms 2|, as best shown in Figure 3, and

is secured to an eye 40 at thelower end of the beforementioned link M to which same eye the beforementioned hoist chains 7 [3 are secured. When the bucket I0 is over the desired place upon which the load is to be discharged, the operator slacks off the drag line 30 whereupon the front end of the bucket will dip downward while the trip chain 39becomes taut and moves the lever arms 22 to swing the lidto full open position and hold the lid in this position while the load is being dumped and until the bucket has been lowered to the ground to again be filled.

I From the above description it is thought that the construction and operation of the invention will be fully understood without further explanation;

What is claimed is: g

1. The combination with a drag line bucket havingan open front end, of a hoe-like lid closing the frontend (of the bucket and having a shank pivotally connected to the bucket substantially midway between the front end and the rear end of the bucket, a lever extending upwardly from the shank for rocking the lid to open and to closed position, a drag line connected to the front of the bucket, a lifting cable connected'to the rear of the bucket, a trip cable connected with the dragline and having a slip connection with the lifting cable, a bracket arm carried by and extending above the front end of the bucket, a direction changing sheave carried by the upper end 7 of the bracket arm,'a direction changing sheave carried by the bucket near the rear end thereof, said trip cable being trained over the first named sheave and terminally connected to the lever for rocking the lever to close the lid when the hoist cable is tensioned, a second cable connected to the drag line and trained over the sheave at the rear end of the bucket and terminally connected to the lever intermediate the ends thereof for rocking the lever to hold open the lid when the drag line is tensioned and. the hoist cable is slacked, and a trip chain connected to the hoist cable and to said lever and adapted to be tensioned to pull open said lid when the drag line'is slacked and the hoist cable is held tensioned to permit dumping of the bucket.

2 The combination with a drag line bucket having an open front end, of a hoe-like lid closing the front end of the bucket and having a shank extending rearwardly along the top of the bucket,

means pivotally connecting the end of the shank i to the top of the bucket-substantially midway between the ends of the bucket, a lever connected to said shankand extending obliquely upward above the bucket, a drag line connected to the frontend of the bucket, alifting cable connected to the rear end of the bucket, a trip cable connected with the dragline and having a slip connection with the lifting cable, an upwardlyextending arched bracket arm connected to the sides of the bucket at the front end of the bucket, a sheave mounted on the arm atlthe top thereof and disposed at substantially the height of the top of said lever, a second 'sheavejmounted on the bucket nearthe rear end of thefbuc ket, said trip cable being trained over the sheave carried by the bracket arm and being terminally connected to the top of the lever for closing the lid when the hoist cable is tensioned, a second cableconnected to the drag line and trained over said sheave at the rear end of the bucket andbeing terminally connected to said lever intermediate the ends thereof for rocking the lever to hold open the lid when the drag line is tensioned and the hoist cable is slacked, and a trip chain connected to the hoist cable and to saidlever-and adapted to be tensioned andpull open said lid when the .drag line is slacked and thehoist cable is held tensioned to dump the bucket. 7

- HAROLD J. ATKINS;

CHARLES M. CONNER.

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