English Dictionary

vacuum brake

名詞

(rail transport) A brake used on trains, working on the principle of keeping up a vacuum in a continuous pipe or pipes extending under the train, and in brake-cylinders connected to them under each vehicle, the air being sucked out by ejectors or pumps on the locomotive.

日本語の意味

列車運行に使用されるブレーキ装置。車両下方の連続したパイプ内で真空状態を維持し、各車両に取り付けられたブレーキシリンダー内の空気を排出（吸引）することにより作動する。

Before departure, the technician checked the vacuum brake for leaks along the entire train.

出発前に技術者は列車全体にわたって真空ブレーキに漏れがないか点検した。

意味（1）

(rail transport) A brake used on trains, working on the principle of keeping up a vacuum in a continuous pipe or pipes extending under the train, and in brake-cylinders connected to them under each vehicle, the air being sucked out by ejectors or pumps on the locomotive.

Consideration of recent pronouncements and predictions shows second thoughts to be practicable, in particular, on the technical decision for which the previous B.T.C. regime was most hotly criticised by experts - the adoption of the vacuum brake as standard for the modernised British Railways. … The original decision to retain the vacuum brake was justified largely on grounds of the intolerable operating convenience that would ensue from a changeover.

vacuum brakes （ plural ）