| 单词 | spring sail |
| 释义 | > as lemmasspring sail spring sail n. now historical a type of sail on a windmill consisting of a series of shutters attached at one end to a single bar or rod, with the force required to open them being determined by a spring attached to each sail.The spring sail was invented by the Scottish millwright Andrew Meikle in 1772. ΘΚΠ society > occupation and work > equipment > mills > [noun] > windmill > sail > type of spring sail1835 spring sweep1919 patent sail1924 fan-tail1934 1835 Ipswich Jrnl. 2 May (advt.) The property consists of two spacious post windmills..with spring sails, round-house, and extensive stowage for corn. 1931 S. P. B. Mais England of Windmills p. xxiv The spring sail is made up of wooden shutters, or a canvas-covered wire frame, hinged at one edge and connected to a common sail-rod so that they all open or shut simultaneously. 2015 Scunthorpe Tel. (Nexis) 10 Sept. 50 This [sc. post mill]..worked until the 1940s, when it had four spring sails, before becoming derelict. < as lemmas |
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