| 单词 | locking frame |
| 释义 | > as lemmaslocking frame locking frame n. Railways that part of a lever frame containing the mechanism which interlocks the levers for controlling different signals and points, ensuring that they can only be operated in a prescribed sequence; cf. interlock v. 3, lever frame n. (a) at lever n.1 Compounds 2. ΚΠ 1868 Minutes Proc. Inst. Civil Engineers 1867–8 27 426 There are in the locking-frame thirty-two slides and about one thousand locks. 1889 G. Findlay Working & Managem. Eng. Railway 71 The ‘locking-frame’ consists of a row of levers by means of which the signalman actuates every pair of points and every signal under his control. 2010 Jrnl. Building Appraisal 5 313 A typical signal box would be..two storey with the locking frame housed at ground level and the signalling accommodation on the first floor. < as lemmas |
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