| 释义 |
Billy Fairplay or Playfair. Coal-mining.
(See quot. 1883.)
1876Brit. Pat. 4387, Machines for weighing small coal known by the name of ‘Billy fair play’. 1883Gresley Gloss. Coal Mining, Billy Playfair or Fair-play,..a mechanical contrivance for weighing coal, consisting of an iron trough with a sort of hopper bottom, into which all the small coal passing through the screen is conducted and weighed off and emptied from time to time. 1889Law Rep. (Appeal Cases) XIV. 231 The coal was shot down on a screen called Billy Fairplay. |