On the Vulcanized Gum Lining of the Screw Shaft

Abstract

There are several methods for the protection of the screw shaft from the corrosion in sea water. Even with the best methods of these, such as the continuous brass sleeve, we have met frequently with the trouble in making as well as after the services, especially in case of the long shaft.
For the sake of these defects we applled the vulcanized gum lining for the twin screw shafts of the new steamer S. S. Soya Maru, the ice breaking ferry of Imperial Government Railways. This paper is a report of the process of the vulcanized gum lining of that shaft at Yokohama Dock Yard. The paper notes also the other important advantages with this method, such as the weight saving and less expense. After some six months service the steamer docked and we found that the method was satisfactory with no defect in the result.