Bleaching and dyeing; fluid treatment and chemical modification – Fluid treatment – Special forms and forming
Patent
1992-08-21
1993-08-31
Coe, Philip R.
Bleaching and dyeing; fluid treatment and chemical modification
Fluid treatment
Special forms and forming
68178, D06B 328, D06B 2300
Patent
active
052397190
ABSTRACT:
A method and apparatus operable on a jet dyeing or finishing machine having a treatment chamber, a lifter reel, and a jet nozzle for movement of a fabric rope through the chamber for wet treatment thereof. Such an apparatus includes a direct current motor for driving the lifter reel, a mechanism for periodically deactivating the lifter reel drive, a sensing component for sensing the electromotive force (EMF) generated by the direct current lifter reel motor during periods of deactivation, and appropriate circuitry for comparing the sensed EMF value with a predetermined threshold value and signaling an operator in the event that the sensed EMF value is below the predetermined threshold value. A low EMF value is interpreted as an indication that the fabric rope is stopped or moving slowly over the lifter reel, with the lifter reel drive motor correspondingly rotating at a relatively lower rotational velocity, and the assumption is made that the slow rate of travel of the fabric rope is caused by tangling or other disruptions.
REFERENCES:
patent: 3830084 (1974-08-01), Caputi
patent: 4015452 (1977-04-01), Kreitz
patent: 4107801 (1978-08-01), Tachibana
patent: 5014526 (1991-05-01), Hacker et al.
Coe Philip R.
Gaston County Dyeing Machine Co.
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