Trianls and Proposals about Double Twisting Macllmes

Abstract

Recently many people are studying the problems concerning with large packages in Japan. This study is one of these lines. I propose two mechanisms for double twisting. One drawing thread upwards and the other drawing thread downwards. Conclusions -
Trials were done for models and actual machines.
The results obtained for the mechanism drawring thread upwards, are very satisfactory and practicable. Model machines are being made now for a mechanism drawing thread downwards. This method is also expected to be satisfactory and practicable.