Device for controlling the tension in the yarn unwinding from a yarn carrying body

A device for controlling the tension in the yarn unwinding from a yarn carrying body, particularly from an apparatus for storing the yarn and feeding it to using machines, comprising two shaped bodies facing each other and coaxial with said yarn carrying body, the first shaped body being fast with the latter, while the second shaped body, having an axial hole passing therethrough for the passage of the yarn drawn from said carrying body and the tension of which has been controlled, is carried by a fixed bracket, wherein the outer edge of said first shaped body has a continuous series of elongated flexible hairs inwardly projecting therefrom and distributed according to a conical surface, with one end thereof fast with said edge, and inclined in a direction towards the second shaped body and in the tangential unwinding direction of the yarn, the other end of said hairs being free and positioned adjacent the free edge of an elongated annular projection axially extending from the first shaped body, an annular projection of an intermediate diameter between the diameters of the outer edge and annular projection of the first shaped body extending from the second shaped body to the first shaped body, under the device use conditions the free edge of the annular projection of the second shaped body contacting said hairs at an intermediate location of the length thereof.