Apparatus for screwing in set screws, which can be operated by a wrench

Claim 1

Screwing-in apparatus for set screws which can be operated by a wrench, for the connection of hollow rod elements with junction members of a framework, in which the junction members have threaded bores to receive the set screws and the rod elements have end members with middle bores for the passage of the shanks of the set screws, of which the heads can be applied on inside shoulders of the end members for positioning, and a tubular element is provided, which extends inwardly from an opening in the wall of the rod element and opens axially parallel to the middle bore in the end member, in order to guide drive elements of the screwing-in apparatus disposed therein, characterized in that a tubular curved element (25) forms a guide member for the screwing-in apparatus (22), in the rod element (12), in which drive means are rotatable and axially immovable, in that the inner end of the tubular element (25) is configured as a plug holder for the set screw (18), and in that a guide part (39) with a curved section corresponding to the exterior surface of the rod element (12) is mounted on the outer end of tubular element (25), said guide part being engagable with the exterior surface of the rod element and being slidable thereon to align the set screw (18) with the end member bore and threaded bore in the junction member.