Mobile shovel excavator

A mobile shovel excavator having a superstructure rotatable around a vertical axis on an undercarriage, wherein the circumscribed arc of the rotating superstructure projects sidewards beyond the undercarriage, an operator cab mounted on one side of the longitudinal center line of said superstructure, a stump jib pivotable about a vertical pivot axis on said superstructure into and away from a pivot end position in which said stump jib extends substantially transverse to and on the other side of said longitudinal center line of the superstructure and within said arc, a pivot support directly connected to said superstructure for laterally pivoting said stump jib, an excavator jib being vertically and horizontally pivotable about axes on the other end of said stump jib, a repository platform on the same side of said superstructure to which said stump jib extends in its pivot end position whereby said stump jib, said excavator jib and a working tool connected thereto may be moved into said arc for full accomodation therein, and whereby said working tool may be supported on said platform when not in use and with said excavator jib substantially parallel to said longitudinal center line of the superstructure and within said arc.