Abstract: A weaving loom of the type in which the back beam is mounted for carrying out a limited translational movement for compensating the variations in tension in the warp threads passing over it, which variations are caused by the periodic changes of the shed. An auxiliary guide for a plurality of warp edge threads is provided at at least one end of the back beam, said guide being mounted to carry out a translational movement, independently of the back beam, under the influence of an adjustable load imparted to it.

Abstract: A loom comprising a continuously operable weft yarn supply mechanism and an intermittently operable weft inserting mechanism. A tubular storage device is provided having a substantially constant shape in cross-section from one end to the other and storing weft yarn between said mechanisms, the stored yarn being in the shape of a loop having substantially parallel legs. The storage tube is in a substantially upright position and has a common entrance and exit at its lower end, said loop opening downwardly toward said lower storage device end. A suction nozzle is connected to the upper end of the storage device, and a blowing nozzle is adjacent said lower storage device end to propel weft yarn upwardly in a floating condition into the storage device, the suction nozzle helping to keep the weft yarn in such floating condition and sucking fluff away from the lower end of the storage device and discharging it.