{
  "patent_number": "US 157124",
  "country": "US",
  "title": "How Joseph Glidden Invented Modern Barbed Wire",
  "original_title": "Improvement in wire-fences",
  "summary": "A 1874 patent for a specific wire-fence design that used twisted strands to hold sharp barbs in place, fundamentally changing how the American West was fenced.",
  "what_it_does": "The patent describes a method for creating a wire fence by twisting two strands of wire together with a sharp, pointed barb captured between the twists. By twisting the wires, the barb is locked firmly in place so it cannot slide along the fence line. This design allowed for a durable, inexpensive, and easily installed barrier that could withstand the pressure of livestock pushing against it.",
  "what_it_does_not_cover": [
    "Does not cover smooth, non-barbed wire fencing.",
    "Does not cover fences that use a single strand of wire rather than two twisted strands.",
    "Does not cover barbs that are welded or crimped onto a single wire rather than held by a twist."
  ],
  "filed": "1873-10-27",
  "granted": "1874-11-24",
  "expires": "1893-10-26",
  "status": "expired",
  "holder": "Individual",
  "holder_url": "https://patentbrief.org/company/individual",
  "inventors": [
    {
      "name": "Joseph F. Glidden",
      "url": "https://patentbrief.org/inventor/joseph-f-glidden"
    }
  ],
  "times_cited": 4,
  "tags": [
    "mechanical",
    "materials"
  ],
  "abstract": null,
  "url": "https://patentbrief.org/patent/us/157124/barbed-wire-glidden",
  "markdown_url": "https://patentbrief.org/patent/us/157124/barbed-wire-glidden/md",
  "google_patents_url": "https://patents.google.com/patent/US157124",
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}