SPINNING TESTS OF COTTON, 
13 
MOISTURE CONDITIONS. 
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%-inch staple. 
Type of bale. 
Flat. 
Tem- 
perature. 
Relative 
hu- 
midity. 
Standard. 
Tem- 
perature. 
Relative 
hu- 
midity. 
High density. 
Tem- 
perature. 
Relative 
hu- 
midity. 
STAGE. 
When opened 
Finisher picker 
Card 
Drawing frames, 50 grain sliver 
Roving frames: 
6.66 hank, fine frame 
8.00 hank , jack frame 
.11.11 hank, jack frame 
Spinning 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 
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 l\-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 
densitv. 
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. 
