4 BULLETIN 62, U. S. DEPARTMENT OF AGRICULTURE. 
Table I. — Organizations, speed, and settings used with regular mill machines for five 
official cotton grades — Continued. 
SPEEDS (R. P. M.). 
Machine. 
Opener beater (3-blade). 
Breaker beater (2-blade < 
Fan 
Intermediate beater (2-blade). 
Fan 
Finisher beater (2-bkide) 
Fan 
Card cylinder 
Doffer 
Drawing, calender roll 
Slubber F. R., 11X5§ 
Intermediate F. R., 9X4 1 , 
Fine-frame F. R., 7X3* 
Spinning F . R 
Spindle 
No. 12's 
from Good 
Ordinary. 
1,170 
1,460 
1,260 
1)460 
900 
1,460 
900 
165 
13 
315 
195 
182 
150 
r, 500 
Xo. 16's 
from Low 
Middling. 
1,170 
1,460 
1,260 
1,460 
900 
1,460 
900 
165 
13 
315 
192 
182 
180 
140 
8,000 
No. 22's 
from Mid- 
dling. 
1,170 
1,460 
1,260 
1,460 
900 
1,460 
900 
165 
12 
315 
192 
160 
130 
120 
8,200 
No. 2S's 
from Good 
Middling. 
1,170 
1,460 
1,260 
1,460 
900 
1,460 
900 
165 
12 
315 
175 
157 
130 
114 
9,000 
SETTINGS. 
Machine. 
No. 12's 
from Good 
Ordinary. 
Opener-feed roll to beater 
Grids from beater (top) 
Grids from beater (bottom) 
Breaker-feed roll to beater 
Grids from beater (top) 
Grids from beater (bottom) 
Intermediate-feed roll to beater. 
Grids from beater (top) 
Grids from beater (bottom) 
Finisher-feed roll to beater 
Grids from beater (top) 
Grids from beater (bottom) 
Card: 
Feed plate to licker in 
Mote knives (top) 
Mote knives (bottom) 
Licker in to cylinder 
Back plate to cylinder 
Flats to cylinder (back). . 
Flats to cylinder (center). 
Flats to cylinder (front). . 
Front plate to cylinder. . . 
Doffer to cylinder 
Dofler comb to doffer 
Licker in screen (front) . . . 
Licker in screen (back) . . . 
Cylinder screen (back). . . 
Cylinder screen (center) . . 
Cylinder screen (front) . . . 
Drawing (2 processes). 
Slubber rolls 
Intermediate rolls 
Fine fly frame rolls. . . 
Spinning rolls 
Iii spite of the fact that some of the grades would rarely be spun 
into yarn of these sizes, it was thought best for various reasons to 
spin all the grades into one size of yarn at the Danville mill. The same 
cotton will be used in smaller quantities at the two textile schools 
and spun as nearly as possible under the same conditions. At one 
of the schools the mill tests will be duplicated: at the other a varia- 
