Abstract: Card-clothing wire is manufactured for use on rollers in textile fibre processing machines. The wire is formed into a helical coil, with the teeth projecting radially from the rib of the wire, in the same manner as in the condition of use on the roller, and while in this helical coiled formation is subjected to a high temperature chromium diffusion process to produce a surface layer enriched with chromium, producing a surface hardness in excess of 1500 HV as measured on the Vickers hardness scale. Although the surface is well able to withstand the abrasive action of the fibres in use, it is not subjected to cracking, because of the precoiling of the wire before it is subjected to the diffusion process.

Abstract: An integral traveller for ring spinning machines formed with two parallel limbs meeting at an apex at an included angle of 110.degree.-120.degree. to the horizontal with the apex symmetrical between the limbs and one limb being formed with an inturned portion for engagement in use with a shoulder on the outer surface of the ring.