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Kings Norton Stop Lock () is a Grade II * listed building at Kings Norton Junction on the Stratford-upon-Avon Canal near its junction with the Worcester and Birmingham Canal. It is the only guillotine-gated stop-lock on a canal.〔(【引用サイトリンク】 work=Waterscape.com )〕 ==Description== This stop lock was built to prevent water flowing from one canal to another, regardless of which side was higher, but normally the Stratford-upon-Avon Canal was six inches higher. Canal companies were always concerned with the conservation of their own water supplies. There was also a toll house adjacent to the lock. 〔(【引用サイトリンク】 work=River Rea Heritage Trail )〕 The wooden guillotine style gates are suspended in a slightly raked cast iron girder frame by a chain which passes through a small block on the gate. One end of the chain passes over two large wheels to a winch mechanism. The other end passes over two more large wheels to a hidden counterweight built into the side wall of the lock.〔(【引用サイトリンク】 work=www.kingsnorton.info )〕 There was no need for paddle gear to fill or empty the lock. With such a small difference in water level a guillotine gate could easily be lifted to let water flow in and out. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「King's Norton Stop Lock」の詳細全文を読む スポンサード リンク
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