"Ramsbottom safety valve" meaning in English

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  "etymology_text": "Named after English mechanical engineer John Ramsbottom.",
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      "form": "Ramsbottom safety valves",
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        "plural"
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  "lang_code": "en",
  "pos": "noun",
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      "examples": [
        {
          "ref": "1951 April, “Notes and News: Locomotive Notes: London Midland Region”, in Railway Magazine, number 600, page 283:",
          "text": "The boiler had a large dome over the firebox, inside the cab, surmounted by Ramsbottom safety valves.",
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        "A kind of tamperproof safety valve for use on locomotives, consisting of two plug-type valves connected by a spring-laden pivoting arm."
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          "safety valve",
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          "locomotive",
          "locomotive"
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        [
          "plug",
          "plug"
        ],
        [
          "valve",
          "valve"
        ]
      ]
    }
  ],
  "word": "Ramsbottom safety valve"
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          "text": "The boiler had a large dome over the firebox, inside the cab, surmounted by Ramsbottom safety valves.",
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        "A kind of tamperproof safety valve for use on locomotives, consisting of two plug-type valves connected by a spring-laden pivoting arm."
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  "word": "Ramsbottom safety valve"
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