A newly-developed spindle tip to control yarn tension was mounted on the top of a conventional ring-frame spindle. Yarn tension was measured with a transducer located between the front drafing rolls and the thread guide. Tensions and properties were compared between yarns spun with and without the spindle tip; comparison are presented for an entire bobbin fill and for spindle speeds from 10 000 to 14 600 rpm. Spindle tips with shanks of different diameters were studied. Yarn tension was recorded for several thread-guide positions. In all tests, use of the new spindle tip reduced yarn tension by 75 to 90% and improved yarn properties slightly.
Get full access to this article
View all access options for this article.
References
1.
Anderson, G.C. , "The Evaluation of Spinning," Edward R. Schwarz lecture, Textile Division, ASME, Charlotte, N. C., September, 1976.
2.
Buehler, G. and Schenkel, E., Can Ring Spinning Machines Run Faster and Still Suffer Fewer Breaks?, Melliand Textilber. Intern.3, 55-64, (1974).
3.
Graham, J.S. and Bragg, C.K., Effects of Spindle Centering on Ring-Spinning Tension, J. Engr. for Ind.99, 51-55, (1977).
4.
Hart, D.G., "Plug-In Type SpindleExtension," U. S. Pat. 3823539, 1974.
5.
Landstreet, C.B. , "Experimental Study of Spinning Tension," 15th Annual Cotton Research Clinic, Pinehurst, N. C., February, 1964.
6.
Louis, G., Fiori, L.A., and Sands, J.E., Using LongStaple Cotton? High-Elongation Fiber Will Boost Spinning Output, Textile Ind.125, 97-104, (1961).
7.
Shanklin, E.H. , Spindle Speed—Does It Affect Cotton Yarn Quality?Textile World (1964).
