Bulletin of Takenaka Carpentry Tools Museum

Report on the Historical materials (Carpentry Tools) of Tenaka-Myouou-Taro

Part of Plane, Small plane, Marking tool and Spare parts

Kinya Hoshino, Tadanori Sakamoto

2020 Volume 31 Pages 3-37
Published: March 20, 2020
Released on J-STAGE: March 20, 2021

DOIhttps://doi.org/10.50862/dougukan.31.0_3

RESEARCH REPORT / TECHNICAL REPORT OPEN ACCESS

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This paper reports the result of investigation on the old carpentry tools has kept in the Tenaka family’s house and included in the historical materials of Tenaka-Myoou-Taro which designated Isehara City cultural property. This report will be posted in split in two parts. Carpentry tools were made from the late Edo period until the early Showa period. The carpentry tools surveyed were 44 plane, 35 small plane, 21 marking tool and 27 spare parts. Some masterpiece works are included such as Genbei at the end of Edo period.

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Elucidation of motor skills focusing on the line of sight of the beginning to cut in wood cutting skills

Kazuharu Hashitsume

2020 Volume 31 Pages 39-52
Published: 2020
Released on J-STAGE: March 20, 2021

DOIhttps://doi.org/10.50862/dougukan.31.0_39

RESEARCH REPORT / TECHNICAL REPORT OPEN ACCESS

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The shortage of highly-skilled workers such as carpenters to build shrines has become a serious issue. Furthermore, it takes time to train highly skilled workers. Therefore, we aimed at developing a guidance method to acquire the wood processing skill in a short period of time. In order to do this, it is essential to figure out "where the expert watches, when, where, and how much power is used to manipulate tools". To investigate these critical points, we researched "where the expert watches at the beginning to cut, as an important point for cutting wood with a saw. An eye camera was used to investigate the gaze position and the data was compared with the one by unskilled persons. Our research found the following two points. First, at the beginning of cutting, the expert was moving the line of sight along the cutting line. This means that the expert is checking where to disconnect after a few seconds and the cutting stage simultaneously. Second, the expert watches not only the cutting line drawn on the plane of the lumber but also the cutting lines on the edge of lumber at the same time.

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A study on naval engineer and architect Naokichi Yoshino

Tetsuya Yasuda

2020 Volume 31 Pages 53-90
Published: 2020
Released on J-STAGE: March 20, 2021

DOIhttps://doi.org/10.50862/dougukan.31.0_53

RESEARCH REPORT / TECHNICAL REPORT OPEN ACCESS

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This article clarifies the career of Naokichi Yoshino, a naval engineer and architect. The outline is as follows. 1. Naokichi Yoshino was born in 1869 and worked as a carpenter. And from 1900 to 1918, he worked as a naval engineer. 2. He designs temples and shrines in Tokyo and Kawasaki from the 1920s to the 1940s. His main works include Hikawa Shrine, Tamagawa Shrine, and Senzoku Hachiman Shrine. 3. At the Takenaka Carpentry Tools Museum, there are Naokichi Yoshino's chisel, short sword, ceremonial costume, and scaled bamboo measure. Of these, the short sword was made by Korekazu Ishido in November 1870. And old photographs show that the ceremonial costume was used in the standing pillar ceremony of Tamagawa Shrine in 1938.

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