Various Wire Rope Sockets Used in Slopes
1958 - 1963

Shako no Kosu Iroiro
[Various Wire Rope Sockets Used in Slopes]
21.3 x 30.3 cm Ink Painting

Text at the Bottom Right
Around 1936, drawbars (hikitetsu) for mine cars were improved in order to prevent mine car accidents from occurring. (I do not know about those used in pits run by Mitsui, Nittetsu and others.)
The drawbar (figure at the bottom) was molded and not caulked. The parts around its bolt holes were thickened to prevent it from breaking from the holes. The links of chain connected to it were reduced in number from three before into two, and one of them was made especially long to prevent the chain from twisting. The shackle (shako) between the drawbar and chain, which had been fixed vertically before, was fixed horizontally with a screw into which a split pin (suppi) was inserted to prevent the screw from coming off.

Text at the Bottom Left
The wire rope socket called a fukuro kosu (bag-type wire rope socket: the 2nd figure from the bottom) for use in main slopes was fixed to the wire rope with melted Babbitt metal poured into it. Meanwhile ones for underground winding machines were fixed to the wire rope by inserting the bent tip of the rope into them. A wire rope about 1 inch in diameter could be changed and fixed to the socket in 30 minutes (provided the work was done by me [Yamamoto]).

Text at the Left Middle
Every time a mine car derailment occurred in main slopes inclined 23 degrees or more, connecting pins would come out and a big accident was caused. Therefore, the hook shown in the figure was attached to prevent the connecting pin from coming out. However, its effect was limited. A prize was set on the idea to perfectly prevent the pins from coming out. However, among the collected ideas no practical one was found.

Text at the Top Left
The wire rope socket called a wari kosu (split wire rope socket: the 3rd figure from the bottom) is still used today. However, it is a very troublesome job to change it (it takes more time than to make one). Additionally, those changed by unskilled workers are dangerous and cannot stand much strain.

Words in the Picture (From the Top to the Bottom)
Juryo fumu kara kirawareru: It is hated because it weighs very much.
Kono bu kashimeru kara mendo: It is troublesome to caulk this part.
wari kosu: split wire rope socket
fukuro kosu: bag-type wire rope socket
sumibako: mine car
nubedashi (toridashi) doroba: molded drawbar
kono ana (kiwa) ga wareru koto ohshi: The edge of this hole often broke.
tan: short
cho: long


Translation Assisted by Mr. Nathan Johndro

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