| 单词 | tripcock |
| 释义 | > as lemmastripcock tripcock n. a device on a train which applies the brakes when engaged by a projection on the track, if the train is passing a signal set at danger. ΘΚΠ society > travel > rail travel > railway system or organization > [noun] > types of signal system > train-stopping device connected with signal train stop1895 tripcock1906 society > travel > rail travel > rolling stock > [noun] > locomotive > automatic safety braking device tripcock1906 1906 Railway Mag. Apr. 341/2 These automatic signals have a trigger, which, when the signal is at danger, should engage with a trip cock on the vehicles of the train. 1968 O. S. Nock Railway Enthusiast's Encycl. vii. 274 Co-acting with each stop signal is a train stop, mounted beside the track... When the signal is at danger, the arm is raised. If a train overran a signal..a trip cock lever would strike the raised train stop arm. < as lemmas |
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