| 单词 | plug-frame |
| 释义 | > as lemmasplug-frame plug-frame n. now historical and rare a device attached to the beam of a steam engine, for opening and closing the valves of the cylinder. ΘΚΠ society > occupation and work > equipment > machine > machines which impart power > engine > steam engine > [noun] > parts of > valves > devices for opening or closing scoggan1719 plug-frame1734 spanner1773 plug-tree1782 plug-rod1794 throttle lever1839 1734 S. Switzer Universal Syst. Water & Water-works II. 339 The Shanks..which are thrown backwards and forwards, by the Pins in the Working-timber, or Plug-frame. 1824 ‘R. Stuart’ Descr. Hist. Steam Engine 71 In the perpendicular working beam, called by Beighton [?c1720] the plug-frame, there is a slit which is contrived so that its pins work on the fore part, middle, and back part, to raise and depress the levers..that move the iron axle. 1903 Nature 19 Nov. 68/1 Barney's illustration of the Dudley Castle engine (erected in 1712) was made in 1719, and contains the plug-frame and tumbling-weight device. < as lemmas |
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