Thread friction measurement arrangement.

摘要

There is disclosed a thread friction measuring arrangement comprising first and second strain gauges (11, 12) arranged in a thread path (13) either side of a cylindrical surface (14) against which friction is to be measured so that the said first and second strain gauges (11, 12) give electrical outputs respectively corresponding to the tension in the thread (15) before and after turning around the said surface (14), and further comprising electronic means computing the frictional coefficient of the thread (15) on the surface (14) from the said electrical outputs.