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Joy valve gear is a type of steam locomotive valve gear, designed by David Joy (3 March 1825 – 1903), Locomotive and Marine engineer, and patented (no. 929) on 8 March 1879. His father, Edward was manager of oil seed crushing mills in Leeds. The British patent has not been found but the US patent (US252224 of 10 January 1882) has. Joy's gear is similar…
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gear joy valve patent steam joy's locomotive david railway march us 10 january 1882 shows vertical used locomotives also designed
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Joy valve gear | is a | type of steam locomotive valve gear | 0.90 | text |
| Joy valve gear | has application | Joy's | 0.60 | section |
| Joy valve gear | has application | Lancashire | 0.60 | section |
| Joy valve gear | has application | Yorkshire Railway | 0.60 | section |
| Joy valve gear | has application | London | 0.60 | section |
| Joy valve gear | has application | North Western Railway | 0.60 | section |
| Joy valve gear | has application | Manning Wardle-built | 0.60 | section |
| Joy valve gear | has application | Lynton | 0.60 | section |
| Joy valve gear | has application | Barnstaple Railway | 0.60 | section |
| Joy valve gear | has application | Joy | 0.60 | section |
| Joy valve gear | has application | John Fowler | 0.60 | section |
| Joy valve gear | has application | Co | 0.60 | section |
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