Abstract: A method is provided for the fabrication of a steel propeller which is designed to have a final shape and size consistent with a conventional propeller design. The resultant formed propeller includes n individual blades, each having boss segments. When the boss segments of the individual blades are joined together they form a propeller having a center boss portion. A center aperture may thereupon be drilled or bored in the boss for mounting the propeller on the shaft of a marine engine. The propeller is formed, in accordance with the method of the present invention, by individually press-forging n steel blanks into individual blade portions which include boss segments. The press-forged blades are then ground with their lateral surfaces beveled to permit them to be welded together into a whole propeller. The center aperture is then formed and the propeller finally heat treated and finally ground.

Abstract: A device is provided for spacing apart and damping bundled conductors in an electric line. The device comprises a support, a plurality of arms each carrying a clamp adapted to clamp about and hold one sub-conductor in the bundle of conductors and at least one flexible joint for each arm provided on said support and adapted to flexibly secure a respective arm to said support. Each joint includes at least one frame integral with and secured to said support and located in a plane relative to the plane of the support, a core positioned within the frame to which a respective arm is attached, and at least two elastic elements provided between the core and the frame for retaining the core elastically within the frame. The frame may be located in the plane of the support or in an inclined plane relative to the plane of the support. Additionally, two or more frames may be provided for each arm, each located in a plane coincident with or parallel to the plane of the support.