Measuring and testing – Surface and cutting edge testing – Roughness
Patent
1987-09-29
1989-07-04
Levy, Stewart J.
Measuring and testing
Surface and cutting edge testing
Roughness
G01L 504
Patent
active
048438790
ABSTRACT:
The present invention concerns a method and an apparatus for quality control of textile threads, and particularly of threads produced by different spinning methods. The apparatus comprises a housing (10) containing two measurement modules. A first module comprises a double condenser (32) and its associated electronic circuit to determine uniformity of linear mass of the thread, a precision scale (31) to determine linear mass and a drive means (33). The second module comprises a device (34) and a device (37) which cooperate to determine twist and elastic recovery of the thread. A manipulator (17) allows automatic positioning of the test pieces of thread (46) admitted into the apparatus through flexible tubes (16). The apparatus offers the advantage of permitting a series of measurements to be taken and computer processed for purposes of statistical compilation and/or memory storage.
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Hartsuch, Intro. to Textile Chemistry, Copy 1950, p. 113, John Wiley & Sons, Inc., N.Y.
Drean Jean-Yves
Enderlin Robert
Schutz Richard A.
Levy Stewart J.
Raevis Robert R.
Superba S. A.
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