Method and apparatus for determining characteristics of staple f

Details Method and apparatus for determining characteristics of staple f Method and apparatus for determining characteristics of staple f

1988-09-23

1990-01-09

Levy, Stewart J.

Measuring and testing

Sheet, woven fabric or fiber

Filament

73847, 57264, 57265, 364 40, 364563, G01L 504

Patent

active

048919748

ABSTRACT:
An apparatus and method for determining characteristics of staple fiber yarn by measuring the change in the yarn diameter after twisting or untwisting of the yarn. The yarn thickness of a length of yarn is measured during a first measuring process and subsequently, by a second measuring process after the twist is released. The two series of values of yarn thickness or diameter can then be compared with one another to determine certain characteristics of the sampled yarn.

REFERENCES:
patent: 3377853 (1968-04-01), Carter
patent: 3919886 (1975-11-01), Chambley
patent: 4648054 (1987-03-01), Farah et al.

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