Abstract: A mobile bucket mechanism for collection and conveyance of a bulk material which includes buckets carried by chains over generally vertically arranged sheaves, a support structure for the sheaves which drives the chains to move the buckets in a path to collect bulk material located at a lower end of the path. A feeding device is driven by the support structure to cut into the bulk material and feed the bulk material to the buckets. The feeding device includes a stationary, jacket-like cylindrical body surrounding the path of the buckets and the lower portion of the supporting structure. The cylindrical body has an opening adjacent a portion of the path along which the buckets are carried upward by the chains. A cutting head surrounds the cylindrical body and has essentially radially oriented blades rotatable with respect to the cylindrical body so as to supply the bulk material to the opening.