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US 3,940,955 AGranted
Yarn extraction and washing apparatus
AssigneeE. I. Du Pont de Nemours and Company
InventorPaul Bryce Welsh
Life of this patent
Estimating the term…
Abstract
A yarn extraction and washing apparatus in which a particular arrangement of the yarn passage through the apparatus and fluid conduits connected to the yarn passage for washing and stripping liquid from the yarn and its method of use permits the stripped yarn to travel at a very low tension level.
Claims2
A yarn extraction and washing apparatus comprising:
- a body having a passage extending along a straight axis therethrough and through which yarn travels for treatment, said passage including successively a first extraction chamber having means for draining the chamber, a first passage length, a second passage length having a greater cross-sectional area than said first length, a second extraction chamber having means for draining the chamber, said second extraction chamber being followed by a third passage length being equal in cross-sectional area to said first length;
- a first pair of conduits angularly disposed into the passage at the junction of the first extraction chamber and said first length to provide flow paths into the chamber counter-current with the yarn travel;
- a second pair of conduits angularly disposed into the passage at the junction between said first and second lengths to provide flow paths into the passage co-current with yarn travel;
- liquid supply means connected to said second pair of conduits;
- a third pair of conduits angularly disposed into the passage at the junction of the second extraction chamber and said third length to provide flow paths into the chamber counter-current with yarn travel;
- and gas supply means connected to the first and third pairs of conduits.
3 more elements
Dependencies are inferred from the claim text.