Feldmuehle Aktiengesellschaft

Cerasiv Gmbh Innovatives Keramik-engineering

Helmut Sommer

Peter Artzt

Wolfgang Burger

Eckhard Sonntag

Gert Wloka

Hans-Dieter Weber

Disclosed is an improved ring and traveller system for spinning and twisting frames. At least the surface of the ring coming into contact with the traveller consists of a polycrystalline ceramic material and the ceramic surface of the ring has a surface structure with rounded grain boundaries which form a storage volume for a self-generating lubricating film of fibers. The traveller consists of a resilient carrier material, especially metal, and has a metal and/or ceramic surface, the hardness of which is greater than the hardness of the ceramic surface of the ring.

Ring and traveller system for spinning and twisting frames

A ski having good glidability, and low wear in its glide zones, and in which the tread areas in the glide zones are so configured that ordinary flexural stress will not ensue in cracking or other damage to the thread. The ski has a glide surface comprising one or more elements which are in the form of at least one of solid ceramic sintered compacts and coated metal base plates.

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Reichenbach, Germany

Helmut Sommer