24 | 4.899 | 22-1/2 " " | |
| 25 | 5.000 | 24 " " | 19 " " |
| 26 | 5.099 | 24-1/2 " " | |
| 27 | 5.196 | 25 " " | 19-3/4 " " |
| 28 | 5.291 | 25-1/2 " " | 21 " " |
| 29 | 5.385 | 26 " " | |
| 30 | 5.477 | 27-1/2 " " | 22 " " |
+---------+---------+---------------+----------------+
$/
DRAUGHT FOR YARN.
31. To know the draught for any number of yarn. Write the number you
are spinning or want to spin, add two ciphers to it; divide that by
the hank roving that you are spinning from, to get draught. Example;
hank roving 225, No. yarn 18. Add two ciphers, (1800); divided by 225
gives 8 draught.
GEAR REQUIRED.
32. This is the way I was taught to figure draughts of different
numbers of yarn. If you want to run another number with the same hank
roving, multiply the smallest draught change gear by the number you
are spinning, and divide that by the number you want to spin, and that
will give you the gear required.
ROVING REQUIRED.
33. If you want to spin another number with same draught, write your
number that you want to spin (as above) and divide that by the
draught. That will give you hank roving required.
TO FIND DRAUGHT CHANGE GEAR.
34. Rule to find the draught change gear required. When you change
from one number to another on a frame or mule, when the draught and
roving both have to be changed, multiply the number of the yarn being
spun by the hank roving desired, and that product by the number of
teeth in the draught change gear; using that for a dividend. Then
multiply the number of the yarn desired by the hank roving, using that
for a divisor; that product divided will tell the draught change gear
that is required.
TWIST GEAR.
35. The way I was taught to find the twist gear by square root of the
number of yarn. Multiply the twist gear in use by the square root of
the number being spun, and divide that product by the square root of
the number you want to spin. That will give you the twist gear
required.
TWIST PULLEY.
36. To get the twist pulley for another number of yarn. See what twist
the pulley gives that you have on, and multiply the twist that you
have in, by the pulley that is on, and divide that product by the
twist you would like to put in to get the pulley required.
TWIST OF YARN.
37.
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