1906-7.] Normal Take-up in Twisted Threads — Part III. 113 
TABLE III. 
Description of 
Yarn. 
Average 
diameter of 
singles. 
Turns per 
inch in 
singles. 
d 
n 
6’s worsted 
mi" 
4-6 
[ 1*89 
20’s „ 
'0112" 
14-0 
j 
12’s „ 
•0145" 
5*6 
j 
j- 1-45 
24’s „ 
010" 
8*0 
16-cnt woollen 
28 „ 
•023" 
•016" 
8 
11*5 
| 
j- 1-44 
7 „ „ 
10 „ „ 
•036" 
•030" 
4 
7 
i 
j- 1*2 
When the twist in the singles is expressed in turns per inch, 
The numerical results obtained by experiment and mathematical analysis 
for 6’s and 20s worsted are shown in Table IV. The body of the table 
shows percentage contractions for varying degrees of twist. 
TABLE IV. 
Percentage Contraction for 6’s and 20’s Worsted. 
Degree of 
twist in 
turns per 
inch. 
Experimental 
data. 
Calculated from the mathematical analyses. 
6’s. 
20’s. 
A, 
6’s. 
A 2 
20’s. 
6’s. 
b 2 
20’s. 
C 
6’s or 20’s. 
+ 8 
8-91 
10T7 
15-37 
12-42 
9-00 
23-92 
13-97 
+ 7 
7*33 
8-15 
12*22 
9-89 
7-32 
18-68 
11*12 
+ 6 
5-81 
6-37 
9-47 
7-63 
5-80 
14-07 
8-57 
+ 5 
4*58 
4-96 
6*93 
5-64 
4-44 
10T3 
6*35 
+ 4 
3*40 
3-72 
4-84 
4-00 
3-23 
6-81 
4-43 
+ 3 
235 
2-58 
3-14 
2-55 
2-19 
4-15 
2*84 
+ 2 
1-39 
1-58 
1-70 
1-40 
1-30 
2-12 
1-57 
+ 1 
A 
*61 
•70 
•67 
•48 
*57 
•75 
•63 
U 
- 1 
-•i<3 
+ •08 
-•31 
-'•28 
-•41 
-•10 
-•30 
- 2 
-•04- 
+ 30 
-•27 
-•28 
-•67 
+ •42 
-•28 
- 3 
+ •18 
+ •62 
+ •14 
•00 
-•77 
1-59 
+ •05 
- 4 
•69 
M2 
+ •90 
+ •56 
-•70 
3T5 
•72 
- 5 
1*21 
1-72 
2-02 
1-42 
-•49 
5-85 
1-71 
- -6 
1-92 
2-53 
3-50 
2-58 
- 'll 
9-00 
3-00 
- 7 
2‘87 
3*62 
5*32 
4*00 
+ •43 
12-72 
4-63 
- 8 
4*10 
5-22 
7*54 
5-82 
1T3 
17T1 
6-58 
- 9 
5-51 
7T6 
10-20 
7-74 
1-97 
22T7 
8-85 ' 
-10 
7T6 
9*31 
12-95 
9-83 
2-98 
27-78 
11-43 
“ Direct ” twist is reckoned positive and “ inverse ” twist negative. 
VOL. XXVII. 
8 
