development of a web of a textile business has.

摘要

A device for advancing a textile cloth, for instance on an embroidery loom, in accordance with which the cloth unwinds forward without limit, with possible return to the rear, while continuously retaining the same predetermined tension due to the direct action of an electromagnetic coupler, which by electronically controlled tensions and relaxations of tension, balances the advance and rearward-return process of the cloth.