At the downstream or output end of the shed the warp threads are beaten-up with the weft thread as described earlier and thereafter the woven material is drawn off by the take-up roll. The rate at while the narrow fabric needle loom weaving proceeds and the warp threads are withdrawn is determined essentially by the rate of withdrawal of the woven material by the take-up roll.

The setting of the tension on the tension springs, both by the design of the tension springs themselves and the further fine adjustment provided by the tightener device will control the tension placed on the warp threads. Needless to say, if the tension is too great, the warp thread may be broken and if the tension is not enough weaving difficulties will be encountered.

In the known prior art arrangements for braking the warp beam of an automatic narrow fabric needle loom, weights were depended from the periphery of the warp beam and the weights adjusted to provide desired tensioning of the warp thread.