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Cause and Prevention of Uneven Yarn (Classic Reprint)

Cause and Prevention of Uneven Yarn (Classic Reprint)

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Excerpt from Cause and Prevention of Uneven Yarn

It is not the intention of the writer to discuss this subject except from a practical standpoint. Cause and prevention of uneven yarn is a problem that we have to face more or less every day, and the only way to make an even yarn is to be on (he lookout for small things at all times. To make an even yarn we must, have a uniform staple, the carder should get out his mixing and grade his cotton, try to get the staple as near the same as possible, open as many bales at one time as the space in opening room will permit. Have the man whose duty it is to feed the hopper to keep this machine about two-thirds full at all times. This may seem too small a matter for some to pay much attention to, but if we expect to get an even lap on the neater we must have an even feed from hopper. The breaker laps should be weighed two or three times each day and kept as near one weight as possible. Close attention should be given to the pickers as it is very desirable that we make good even laps. Do not allow finished laps to vary in weight over 1-4 of a pound either way. If they are too light or too heavy have picker man to set them back and run over, or the card sliver will be uneven.


The cards do not receive the attention by some that they should. Bad work made on these machines will show itself during each process. The cards should be ground every 15 or 20 days, with good grinding emery, the grinding rolls should be covered with new emery after 10 or 15 cards has been ground. If we expect the cards to turn off a good even sliver free from foreign matter we must keep the wires sharp. The licker-in should be kept in good shape and set as close as the staple will permit. A lot of uneven work is caused on the cards from split laps. If the lap splits and runs into the card double, the sliver will be too heavy. The card hand should be watched very closely and made to get all singlings or doublings out of cans on front of cards. Keep the cards clean so the dirt and trash won't get into the good stock. If the card hands let the sliver cans get too full the sliver will be stretched and be too tight. When stripping cards a good idea is to strip every other card after these have run about an hour, then finish stripping. The sliver will run lighter when the card has just been stripped than after the card has been stripped awhile, so if we only strip half the cards at one time, we only get half the light sliver that we will if we strip all cards together.

Drawing Frames.

Drawing frames are the simplest machines in the mill, for that reason they receive less care. These machines should be looked after very carefuly.

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