﻿14 



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Table 12. — Breaking strength in pounds per skein of 120 yards of ijarn spun from Delta 



cotton, 1^-inch staple. 





New 

 draper 



standard. 



Twist 

 multiplier. 



I j pe of bale. 



No. of yarn. 



Flat. 



Standard. 



High 

 density. 



;!0's 



Pounds. 

 64 



48 



39 



f 4. 25 



4.50 



I 4.75 



Average.. 



| 4. 25 

 \ 4.50 



{ 4. 75 



Average.. 



| 4. 25 

 { 4. 50 

 I 4.75 



Average. . 



Pounds. 



50.5 

 51.6 

 49.6 



1 'mi mis. 

 51.8 

 51.3 

 49.1 



Pounds. 

 48. 5 

 48.6 





47.3 





50.6 



50.7 



48.1 



40's 



34.0 

 33. 6 

 33. S 



35.5 

 35. 



34.1 



32.7 

 32. 7 





32.2 





33.8 



34.9 



32.5 



50'S 



24.3 

 24.3 

 24.2 



24.3 

 24.3 

 23.6 



23.6 

 23.2 





23.0 





24.3 



21. 1 



z\. 3 



None of the yarns broke as strong as the new Draper standard. 

 This weakness is probably due to the excessive rainfall which delayed 

 the opening of the bolls and the picking of the cotton. 



IRREGULARITY OF YARNS. 



The following figures give the irregularity of the sizings and break- 

 ing strengths of the yarns from the different types of bales: 



Sizing Break 



(percent), (percent.) 



Flat bale 2. 06 4. 53 



Standard or railroad compressed bale 1. 85 5. 18 



High-density bale 2. 60 5. 18 



These figures indicate that there is practically no difference in the 

 irregularity of the sizings or strengths of the yarns from the different 

 types of bales. 



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ISai 



Fia. 3. — Irregularity of 40/a yarn spun from Delta 1 J" cotton compressed to different densil ins. 



The results of the calculations of the irregularity of the yarns are 

 verified by tests on the Moscrop single-strand tester. Figure 3 is a 

 photograph of a chart made by this tester when breaking 40 's yarn 

 spun from cotton compressed to different densities. 



Each dot on Figure 3 represents the breaking strength of a single 

 strand of yarn 12 inches long. The greater the distance these dots 

 are from a horizontal line the more irregular the yarn. 



