| 单词 | patent sail |
| 释义 | > as lemmaspatent sail patent sail n. historical an automatically controlled windmill sail. ΘΚΠ society > occupation and work > equipment > mills > [noun] > windmill > sail > type of spring sail1835 spring sweep1919 patent sail1924 fan-tail1934 1924 Trans. Newcomen Soc. 3 50 It was desired to fit patent sail regulation instead of ‘spring’ or ‘sail’ sweeps. 1973 J. Vince Discov. Windmills (ed. 3) 21 The most significant improvement in sail design came about in 1807 when William Cubbit [sic] invented his patent sail. 2002 Rockford (Illinois) Register Star (Nexis) 31 July 9 a P. LaCour's mill was built in Denmark with patent sails and twin fantails on a steel tower. < as lemmas |
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