| Autor: |
Speakman, J. B., Stott, Emma |
| Zdroj: |
Journal of the Textile Institute (Transactions); Jun1931, Vol. 22 Issue 6, pT339-T348, 12p, 6 Charts, 1 Graph |
| Abstrakt: |
The present paper records the first of a series of investigations undertaken to give quantitative expression to the shrinkage of wool fabrics in a milling machine. The frictional resistance to motion of the wool fibre is smaller in the direction of the root-end than in the direction of the tip, and the difference between these two values of friction is taken as a measure of scaliness and of the effectiveness of the scales in causing shrinkage in milling. In the case of the dry fibre moving against a card wire, Barker and Marsh have found the friction in the antiscalar direction to be 20% higher than in the direction of the scales. Measurement of the scaliness of different wools has not hitherto been attempted, nor has any method for performing such experiments been described. For any interpretation of the milling process, it is the friction of wool against wool which must be measured, and the present paper describes a method for making such observations, together with typical measurements of scaliness for a wide range of wools. Apart from its interest in relation to milling, it is believed that the method may be of service in biological studies of the inheritance of scale characters. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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