Specification relating to preparing Gutta-Percha for insulating telegraphic conductors

A specification for "improvements in preparing gutta-percha and other like substances suitable for insulating telegraphic conductors and for other purposes, and in machinery employed in the process, and also improvements in making unions between various lengths of insulated conductor". This improves on Truman's earlier patent on the same subject and states that the kneading that was part of the process for preparing gutta-percha was harming its usefulness.