Abstract
The study described in the following article has been made with an aim to ascertain experimentally whether a two-for-one twister for silk yarn, rayor yarn, etc. can be used to twist hairy worsted yarn.
Another aim of our study has been to design a simple and economical spindle of a special type to be fitted to a two-for-one twister.
Our study has led to an economical two-for-one twisting-spindle, which has been made by slightly improving the traditional spindle for the ringtwister.
We have also contrived a new method of drawing yarn out of a yarn-package while twisting hairy worsted yarn with the newly-designed twisting-spindle.
The new method of drawing yarn out of a package, in turn, has given birth to a new twisting-machine. Equipped with a large package and being entirely automatic, the new twisting-machine increases-not decreases-productivity by 36% even when worked from 10 p.m. to 5 a.m. without an attendant.
