Rope construction

Details Rope construction Rope construction

1998-07-20

1999-08-03

Calvert, John J.

Textiles: braiding, netting, and lace making

Processes and products

Braided

87 13, D04C 112

Patent

active

059310766

ABSTRACT:
A method for construction of a large diameter braided rope. The rope is formed of high strength, low elongation synthetic fibers which are twisted together at a twist factor in the range from about 125 to about 145 to form a plurality of comparatively small diameter yarns. The small diameter twisted yarns are then braided together at a pick multiplier in the range from about 1.0 to about 2.0 so as to form a plurality of braided strands, and the strands, in turn, are braided together with a pick multiplier of about 2.0-3.6 so as to form the large diameter braided rope. The braiding of the strands imparts a degree of coherence which permits a lower twist factor to be used in the yarns. This results in a significant increase in translational efficiency over conventional twisted-strand construction, by avoiding the over twisting of low elongation fibers which occurs when forming large diameter yarns.

REFERENCES:
patent: 346577 (1886-08-01), Briggs
patent: 2177777 (1939-10-01), Madden et al.
patent: 3090277 (1959-05-01), Schmittmann
patent: 3335634 (1967-08-01), Betta
patent: 3358434 (1967-12-01), McCann
patent: 3805667 (1974-04-01), Orser
patent: 4170921 (1979-10-01), Repass
patent: 5059213 (1991-10-01), Chesterfield et al.
patent: 5662682 (1997-09-01), Chesterfield et al.
The Modern Textile Dictionary, Meredith Press, p. 289, 1963.

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