ANORDNING FOER FASTSPAENNING AV ROERFORMIGA LINDNINGHYLSOR, SPECIELLT AV PAPPERSBANOR ELLER LIKNANDE MATERIALBANOR UPPBAERANDE LINDNINGSHYLSOR.

摘要

An expanding mandrel for clamping a tubular member, especially a tubular core on which a paper web can be coiled in a machine for coiling the web or for supplying the web from a coil, has a pin with flat surfaces against which bracing elements support angularly equispaced segments in a cage which are pressed outwardly to urge convex surfaces of the segments against the inner surface of the core. Along longitudinal edges of the segments rounded rises or protuberances are provided which prevent stress peaks tending to damage the core.