﻿SPINNING TESTS OF COTTON. 

 MOISTURE CONblTIONS. 



13 



Table 10 gives the average temperatures and relative humidities 

 under which each type of bale was tested. 



Table 10. — Average temperatures and relative humidities during the testing of Delta 



cotton of 1 fa-inch staple. 



Typo of bale. 



Flat. 



Tem- 

 perature. 



Iv'i.'ll ive 



hu- 

 midity. 



Standard. 



Tem- 

 perature,. 



Relative 



hu- 

 midity. 



iligh density. 



Tem- 

 perature. 



Relative 



hu- 

 midity. 



STAGE. 



When opened '. 



Finisher picker 



Card 



Drawing frames, 50 grain sliver 

 Rovingframes: 



6.06 hank, fine frame 



S.00 hank, jack frame 



11.11 hank, jack frame 



Spmning frame: 



30's yarn.. 



40's yarn 



50's yarn 



Per cent. 

 52 

 51 

 60 

 61 



55 

 56 



54 



63 

 65 

 69 



'F. 



Per cent. 

 50 

 45 



54 

 58 



58 

 58 

 55 



64 



Per cent. 

 45 

 50 

 59 



60 



58 

 57 

 54 



63 

 65 



• 64 



Table 11 gives the percentage of moisture regain of the cotton at 

 the various stages of the manufacturing process. 



Table 11. — Percentage of moisture regain in the Delta Ifa-inch cotton at the different 

 stages of the manufacturing process. 



Type of bale 



STAGE OR SAMPLE 



From bale 



From bale-breaker 



Finisher picker lap 



Finisher picker lap during carding 



Card sliver 



Finisher drawing sliver 



Roving frames: 



6.66 hank, fine frame 



8.00 hank, jack frame 



11.11 hank, jack frame 



Ring spinning frame: 



30's yarn 



40's yarn '. 



50's yarn 



Flat. 



Standard. 



Per cent. 



Per cent. 



5.95 



7.05 



6.22 



6.59 



5.47 



5.43 



5.63 



5.23 



5.70 



4.88 



6.58 



5.18 



5.04 



5.93 



6.38 



6.32 



5. 76 



6.10 



5.26 



6.10 



5.48 



6.55 



5.65 



6.32 



High 



density. 



Per cent. 

 6.26 

 6.04 

 6.04 

 5.71 

 5.59 

 5.87 



5.37 

 6.38 

 6.26 



5.31 

 5.70 

 6.32 



BREAKING STRENGTH OF YARNS. 



The cotton of each compression was spun into 30's, 40's, and 50's 

 yarn with twists equal to 4.25, 4.50, and 4.75 times the square root 

 of the number spun. The average breaking strengths of these yarns 

 are shown in Table 12. 



Referring to Table 12 and comparing the breaking strength of 

 the yarn spun from the cotton of the different types of bales, it is 

 seen that there is practically no difference between the strength of 

 the yarns spun from the different types of bales. 



