Textiles: manufacturing – Thread finishing – Surface modification of running length
Patent
1978-09-21
1981-08-11
Mackey, Robert
Textiles: manufacturing
Thread finishing
Surface modification of running length
28273, D02G 116
Patent
active
042826373
ABSTRACT:
A Venturi type nozzle for the texturization of yarns includes a hollow body o which compressed air is fed, a needle housed therein to which yarn is fed, and a plug, wherein the needle is provided with a longitudinal passage for the yarn, the air passes between the body and the needle, and yarn and air pass through a passage shaped like a Venturi cone in the plug, and wherein mutually facing portions of the needle head and of the plug have frusto-conical surfaces. The ratio of the axial distance between said frusto-conical surfaces to the diameter of the needle orifice is not more than 0.5, and preferably not more than 0.4. Preferably the conicity of the two frusto-conical surfaces is the same. Preferably also the outer surface of the needle head is cut off to provide a plane portion. The needle is axially displaceable and can be fixed in the desired axial position with respect to the body. Preferred dimensions of various portions of the device are defined, also in relationship to the denier of the yarn processed.
REFERENCES:
patent: 2982000 (1961-05-01), Gonsalves
patent: 3259954 (1966-07-01), Dyer et al.
patent: 3296677 (1967-01-01), Chase
patent: 3545057 (1970-12-01), Lubach
patent: 3577614 (1971-05-01), Price
patent: 3669328 (1972-06-01), Castelli
patent: 3688358 (1972-09-01), Kashima et al.
patent: 4095319 (1978-06-01), Nelson
patent: 4095320 (1978-06-01), Polney
Lucioni Enrico
Mosseri Giuseppe
Mackey Robert
Snia Viscosa Societa' Nazionale Industria Applicazioni Viscosa S
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