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US 4,368,612 AGranted
Apparatus for forming false twisted slubyarn
AssigneeMilliken Research Corporation
InventorPaul W. Eschenbach
Life of this patent
Estimating the term…
Abstract
Apparatus and method to provide a novel false twisted slub yarn by combining a core yarn and an effect yarn in a fluid tangling zone. The linear velocity of the effect yarn is raised to allow slubs to be produced in the combined yarn in an air jet apparatus.
Claims8
Apparatus to form a slub yarn comprising:
- means to supply an effect yarn, means to supply a core yarn, means operably associated with said apparatus to false twist said effect and core yarns, an air jet yarn entangling means, a first means to supply the effect yarn to said air jet means from said means to false twist, a second means to supply the core yarn to said air jet means, means to supply air under pressure to said air jet means to entangle the core and effect yarns in said air jet means and means to take-up the entangled core and effect yarns, said first means including a yarn path deviating means to periodically increase the path of the effect yarn between the false twist means and said air jet means, said yarn path deviating means including a lever arm attached to a gear, said gear being rotably mounted in contact with a rack, said yarn path deviating means including a means to periodically and randomly reciprocate said rack.
Apparatus to form a slub yarn comprising:
- means to supply an effect yarn, means to supply a core yarn, means operably associated with said apparatus to false twist said effect and core yarns, an air jet yarn entangling means, a first means to supply the effect yarn to said air jet means from said means to false twist, a second means to supply the core yarn to said air jet means, means to supply air under pressure to said air jet means to entangle the core and effect yarns in said air jet means and means to take-up the entangled core and effect yarns, said first means including a yarn path deviating means to periodically increase the path of the effect yarn between the false twist means and said air jet means, said yarn path deviating means including a pivotally mounted lever arm in contact with the effect yarn and means to randomly pivot said lever arm to vary the path of travel of the effect yarn.
Dependencies are inferred from the claim text.