わが国の最古級エレベーター巻上機

概要

論文の詳細を見る
The National Museum of Nature and Science keeps an old elevator machine with winding drum made by the Otis Elevator Co. in 1901, which was inherited from Nippon Life Insurance Company in 1966. This elevator was installed at Nippon Life Insurance Company Building at Osaka-city in 1901. It was the third elevator imported to Japan in Meiji era. This paper is the report of the investigation about this old machine. The machine has been kept in the very good condition without lost parts and corroded parts with rust. Rotating the machine by the manual hand, the machine mechanism, gear ratio of the machine and action mechanism of the rope control operation gear unit were examined. Through this investigation, the steady safety philosophy in elevator design using self-lock principle of the worm gear machine was appreciated. We recognized that this was the oldest of workable elevator machines in existence in Japan and very important heritage in the elevator technology.
国立科学博物館の論文