Abstract: A apparatus for measuring tension in a strand such as a belt is provided with an elongated housing having a pair of opposite longitudinal ends and respective structures at the ends having structure edges facing transversely in the same direction and generally defining a plane. A two-arm lever is pivoted on the housing between the ends thereof and has an abutment arm extending transversely between the plates and a measuring arm extending generally longitudinally of the housing and having an arm edge lying between the structure edges and facing transversely opposite to the structure edges. A pivot supports the lever on the housing for angular motion about an axis transverse to the housing between two end positions with the arm edge lying on opposite sides of the plane. A spring is braced between the abutment arm and one of the housing ends for urging the lever into the end portion with the arm edge between the plane and the housing.

Abstract: A loom has a winding system comprising a tension roller and a storage roller connected by means of an endless chain whereby the storage roller is driven by the tension roller with the interposition of a friction mechanism.A follower roller, in contact with the periphery of the roll of fabric wound around the storage roller, causes a rotary cam to rotate such that the movement of the latter is linked with the variation in diameter of the roll of fabric. Bearing against the profile of the cam is one end of an oscillating lever, the other end of which acts on the friction mechanism in order to modify the driving torque of the storage roller by the chain according to the diameter of the roll of fabric.The fabric tension regulating device can be applied to conventional looms and shuttleless looms.