...In normal locomotives, the steam used to move the pistons is directed up the chimney to push out the smoke, but for the steam locomotives made for this railway, a special device was devised to direct the steam into a water tank, preventing the smoke from escaping. Even so, passengers in the carriages were still quite bothered by the smoke, but the convenient and fast subway was well received, and it was extended one after another, until the current London circular line (Circle Line) was completed in 1884. However, there were inherent limitations to the shallow subway (called a surface line) that used steam locomotives. ... *Some of the terminology that mentions "Circle Line" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…普通の機関車ではピストンを動かした後の蒸気は煙突に導かれ,煙を押し出す働きをするが,この鉄道用につくられた蒸気機関車では,蒸気を水槽に導く特別の装置が考案され,煙の排出を防いだ。それでも客室内の乗客は煙にかなり悩まされたが,便利で速い地下鉄は好評を呼んで,次々に延長され,84年には現存するロンドン市内循環線(サークル・ラインCircle Line)が完成した。しかし,蒸気機関車を使う浅い層の地下鉄(サーフィス・ラインsurface line(浅層線)と呼ばれる)にはおのずから限界があった。… ※「Circle Line」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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