wound a storage surface for yarn storage a threading device with a compressed air feeder system and a device for activating direction jet nozzles at least one direction jet nozzle is located between the point of entry of the yarn into the storage and feed device and the feed out point from the yarn winding element this nozzle can be activated independently of the nozzles fitted downstream of the feed out point so that in the event of a partial failure where stored yarn remains on the storage surface the yarn end can be blown below the feed out point application_number US 16793794 A description a yarn storage and feed device 1 as shown in fig1 which serves e g to supply a weft yarn to a gripper or projectile weaving machine not shown and includes a main body 4 which supports a drive motor for a hollow shaft 6 a cover 7 is fixed at the feed end feed in point or inlet z of the main body 4 a concentric ring 10 is arranged on the hollow shaft 6 a channel shaped take up element or winding element 9 leads from the interior of the hollow shaft 6 to a feed out point or outlet.