Adjustable yarn tensioner, textile machine, and method for tensioning a continuously running yarn

A yarn supply canister for use in a direct-cabling textile machine, said supply canister comprising:

• a canister housing designed for holding a yarn supply package upstream of the textile machine;
• a first yarn guide located inside said canister housing for receiving running yarn pulled from the supply package at an unwinding tension;
• a second yarn guide downstream of said first yarn guide, and adapted for guiding running yarn from said canister housing to the textile machine;
• a yarn tensioner located between said first and second yarn guides, and adapted for adjusting unwinding tension in the running such that yarn exits said canister housing at an adjusted delivery tension, said yarn tensioner comprising:
• a rotatable tension wheel having opposing yarn-contacting surfaces formed along an annular region thereof and configured to frictionally contact opposite sides of the running yarn such that the running yarn causes rotational movement of said tension wheel;
• an elongated wheel shaft directly affixed to said tension wheel;
• a tension adjustment assembly frictionally contacting said wheel shaft, and creating select rotation resistance between adjacent parts of said assembly and said wheel shaft such that rotation of said tension wheel is adjustably frictionally controlled, thereby adjusting tension in the running yarn.