ishi-otoshi 石落
KEY WORD : architecture / castles
 
Also termed ishi-otoshimado 石落窓. Stone drop, or stone drop window. A castle installation built into the keep *tenshu 天守, towers *yagura 櫓, walls *hei 塀 and gates *mon 門, that enables the defenders of a castle to observe an enemy climbing the stone wall and to counterattack by dropping stones, and other objects, or to shoot arrows or fire guns. Typically, it is a timber frame construction built out slightly over the plane of the stone wall, usually with a floor covered by a wooden lid that can be removed when necessary. The opening is 0.26m, eight Japanese inches, sun. The width had to be large enough for the stones to pass through and to small for the enemy to sneak into the castle if the stones missed their mark. Some ishi-otoshi projected out in narrow skirts located at strategic points around the castle wall (Right Corridor, Himejijou 姫路城); others projected out all around the perimeter of the structure (the Keep, Kumamotojou 熊本城 and the Keep, Hagijou 萩城); some also projected out from the windows, (the Keep, Hirosakijou 弘前城). Similar in form and function to the machicolations in the European castle tradition.
 
Matsuejou Tenshu 松江城天守 (Shimane)
Matsuejou Tsukeyagura 松江城付櫓 (Shimane)

Matsuejou Tenshu 松江城天守 (Shimane)
Matsuejou Tenshu 松江城天守 (Shimane)

 
REFERENCES:
  
EXTERNAL LINKS: 
  
NOTES
 

(C)2001 Japanese Architecture and Art Net Users System. No reproduction or republication without written permission.
掲載のテキスト・写真・イラストなど、全てのコンテンツの無断複製・転載を禁じます。