12 
BULLETIN 1135, U. S. DEPARTMENT OF AGKICULTTJRE. 
MANUFACTURING PROPERTIES. 
There was no noticeable difference in running the rectangular bales. 
A mill attempting to run round bales continuously must use special 
opening equipment. 
SUMMARY OF TESTS. 
The results of this test show that compressing cotton does not 
affect the amount of waste discarded in the manufacturing process. 
On an average, the yarn spun from the round bale was about 7 per 
cent weaker than that spun from the other types of bales. 
SPINNING TESTS OF DELTA COTTON OF 1 1-8 INCH STAPLE. 
The Delta cotton was compressed into three types of bales: A flat 
bale, a standard or railroad compressed bale, and a high-density bale. 
PERCENTAGE OF WASTE. 
Table 9 gives the percentage of visible, invisible, and total waste 
obtained from the different types of bales. 
Table 9. — Percentage of waste from Delta cotton of 1\ inch staple; grade, Middling. 
Type of bale. 
Flat. ! Standard, 
High 
density. 
PICKER WASTE. 1 
Opener-breaker motes and fly. 
Intermediate motes and fly. . . 
Finisher motes and flv 
Per cent. 
1.00 
.93 
Per cent. 
0.95 
1.17 
.9-4 
Per cent. 
0.S6 
1.16 
.76 
Total visible- 
Invisible 
2.51 
1.29 
3.06 
1.46 
2.78 
1.26 
Total visible and invisible 
CARD WASTE. 2 
3. SO 
Flat strips 
Cylinder and doffer strips. 
Motes and fly 
Sweepings 
2.63 
1.10 
2.04 
.10 
Total visible- 
Invisible 
o. ; 
Total visible and invisible 
PICKERS AND CARDS. 
Total visible... 
Total invisible 
8.15 
2.74 
Total visible and invisible. 
10. 89 
2.58 
1.12 
1.99 
.12 
2.81 
1.22 
2.17 
0. 28 
1.34 
6.89 
'.62 
8.61 
2.49 
8. SI 
2. .55 
11.36 
1 Based upon net weight fed to bale-breaker. 
2 Based upon net weight fed to cards. 
Referring to Table 9 and comparing the percentages of waste 
ootained from the different types of bales, it is seen that there is 
practically no difference between the amount of visible waste dis- 
carded, the figures being: 
Percent. 
Flat bale 8. 15 
Standard or railroad compressed bale 8. 61 
High-densit v bale 8. 81 
