Textiles: manufacturing – Thread finishing – Surface modification of running length
Patent
1978-01-03
1981-06-02
Mackey, Robert
Textiles: manufacturing
Thread finishing
Surface modification of running length
356 23, 356376, 356429, D02G 112
Patent
active
042702526
ABSTRACT:
Apparatus is disclosed to count and control crimps in a moving tow of yarn. The apparatus comprises a target (the tow of yarn), a stroboscopic light, condenser lens, mirror, transparent support for the target, focusing lens, diode array to sense variations in light intensity from the striations in the target, electronic board circuit with terminal board, programmable calculator, and read-out means, such as a light emitting diode display. When used to control the crimping apparatus it also comprises a controller, exit control gate of the crimper and means to exert pressure on the exit control gate. The method for use of this apparatus is to cause an intense light pulse to issue from the stroboscopic light, passing the pulse of light through the condenser lens against the mirror through the transparent support to reflect from the striations in the yarn tow back through the focusing lens into the diode array which counts the variations in light intensity caused by the striations. The variations counted are transmitted from the diode array as an electronic signal to optional storing and averaging means, such as a programmable calculator, then a read-out device. When controlling crimp, the signal is transmitted to a controller which influences a means to change crimp in the crimping apparatus, such as pressure on the exit control gate of a stuffer box crimper.
REFERENCES:
patent: 2991685 (1961-07-01), Van Dongeren
patent: 3907440 (1975-09-01), Eichenberger
patent: 4019066 (1977-04-01), Lucas et al.
patent: 4057350 (1977-11-01), Craig
patent: 4124300 (1978-11-01), Mead et al.
Puchegger, F. New Method to Determine the Crimp of Individual Staple Fibers, Meilliand Textilberichte, pp. 110-113, Feb. 1979.
Crimp Characterization Instrument, Research Disclosure, Apr. 1974, 544090046, No. 120, pp. 48-50.
Harrison David M.
Jermyn Roger E.
Moore Maurice S.
Watson, III Walter E.
Allied Chemical Corporation
Anderson Richard A.
Mackey Robert
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