Active auxiliary nozzle for a shuttle-less loom with pneumatic weft insertion
AssigneeSaurer-Diederichs S.A.
InventorAlbert H. Deborde
Life of this patent
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Abstract
In a shuttle-less loom in which a pick of weft is inserted into the shed of warp yarns by a jet of compressed air from an insertion nozzle to one side of the shed, a plurality of spaced auxiliary nozzles are provided along the weft path through the shed. Each auxiliary nozzle has a horizontal slot directly below the weft path, and a vertical slot at one or both ends of the horizontal slot adjacent the respective lower end of the vertical slot. The slots face in the direction in which the weft travels and are supplied with compressed air to provide a lower substantially horizontal flat jet of air from the horizontal slot and one or two lateral jets from the respective vertical slot, so that the air jets serve to guide, support and augment the propulsion of the weft.
Claims16
An active auxiliary nozzle for a shuttle-less loom with pneumatic weft insertion, comprising:
- a chamber connected to a compressed air supply source;
- means defining a horizontal air outlet slot connected to said source;
- and
- means defining at least one vertical air outlet slot to produce, downstream of the auxiliary nozzle, in a direction of weft displacement, a substantially horizontal lower flat jet and at least one lateral flat jet substantially parallel to a comb of the loom, the means defining said horizontal air outlet slot being oriented to direct said lower flat jet slightly downwardly away from the weft.
Dependencies are inferred from the claim text.