| 摘要 |
PROBLEM TO BE SOLVED: To provide a fence for preventing wild animals from invading, capable of being assembled conveniently by anybody as the work of a Sunday carpenter. SOLUTION: This fence is provided by consisting of a plurality of stakes consisting of steel pipes the opening lower end parts of which are covered with wedge-formed stake points and being driven by holding a prescribed interval into the ground for standing vertically, and crest die steels each having a prescribed length and inserted between the adjacent stakes as at least upper and lower two stages and equipped with a plurality of side cross pieces distributed with many vertical skewer-receiving holes opening on its horizontal plate side by holding a prescribed interval pitch, a plurality of metal joint fitted for covering the stakes as freely lifting up and down for joining the end part of the side cross pieces with the stakes, and many vertical skewers consisting of a reinforcing iron having a thinner diameter than that of the vertical skewer-receiving hole, fixing and maintaining the joints at prescribed heights of the stakes, and tightening the joints and the end parts of the side cross-pieces with penetrating bolts and fixing nuts for making one unit, then driving the vertical skewers from upper direction through the vertical skewer-receiving holes of the side cross-pieces into the ground for standing as a group. COPYRIGHT: (C)2006,JPO&NCIPI
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