Abstract: A digging bucket has a lip, a lip aperture with a forward surface, a digging component mounted on the lip, and a component retaining device. The device comprises a keeper wedge with protrusions bearing against the component and a wedge member interposed between the forward surface and the component. In the improvement, the keeper wedge has at least one angled face and the wedge member has a pair of angled faces, at least one of which bears against the angled face of the keeper wedge. The wedge member is retained in position by a tension bolt extending through the aperture. Several embodiments are disclosed with wedge members having one or two wedges to urge the keeper wedge (and thus the digging component) rearward tightly against the lip.

Abstract: A bucket arch, used on dragline buckets, has a pair of side sections and an arch center section disposed therebetween. At least one lug is attached to the arch center section and exerts a force on the center section along a force axis. In the improvement, the center section is angled with respect to the side sections and has an axis generally coincident with the force axis. Such angled center section at least greatly reduces the twisting forces imposed on the arch by the lug. Such center section also greatly reduces the wear or friction on the center section of the arch resulting from the drag chain rubbing thereon during tipping of the bucket.