Resonant baffle for yarn texturing air jet

Claim 1

In a yarn texturing air jet of the type including an elongate housing having a central bore therethrough, a venturi supported in the central bore and in the exit end of said housing, said venturi defining the exit end of a turbulence chamber, a yarn guiding needle positioned in the central bore of said housing and having an inner end portion positioned closely adjacent said venturi and defining the entrance end of said turbulence chamber, and means for directing pressurized air into the central bore of said housing and along said inner end portion of said needle whereby the air passes through said turbulence chamber and outwardly through said exit orifice of said venturi to impart crimps, curls and loops to the filaments as the yarn passes through said turbulence chamber; the combination therewith of means for increasing the turbulence of air in said turbulence chamber and enhancing the crimps, curls and loops imparted to the yarn in said turbulence chamber, said means comprising a resonant baffle including a substantially planar face extending transversely across and spaced from said exit orifice of said venturi, and means for supporting said resonant baffle for axial adjustment toward and away from said exit orifice of said venturi to vary the spacing therefrom, said resonant baffle being solid and extending perpendicular to said central bore so that the pressurized air passing outwardly through said exit orifice of said venturi is engaged by said baffle to cause some of the energy of the pressurized air to echo back into said turbulence chamber and to thereby vary the normal resonance and increase the turbulence in said chamber.