The first process here is that of the ensign lacing machine, which puts a strong twine through the eyelets and ties it in an accurate manner. 佚名.神奇的知识之书.
The eyelets are next added by a machine which places them in both sides of the shoe at the same time and directly opposite each other, this operation finishing the upper part of the shoe. 佚名.神奇的知识之书.