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GB191102711A
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Improved Apparatus for Forging or Forging and Rolling Circular Metal Articles.
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US1040979A
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Machine for forging circular pieces.
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GB191027160A
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Manufacture of Circular Metal Objects with Shaped Peripheries, by Forging and Rolling.
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US1068236A
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Method of manufacturing by forging or matricing circular pieces of work with a profiled periphery.
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US983042A
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Mechanical forging of wheels of iron or steel.
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GB190804846A
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Improvements in the Manufacture of Rings or Objects of Circular Form of Plastic Materials other than Metal
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GB190620128A
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An Improved Method and Apparatus for Heating Helical Bodies.
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US876709A
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Machine for forging and welding metallic rings.
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GB190606808A
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Improvements in Machines for Forging and Welding Metallic Rings.
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CA92936A
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Method of making links, etc.
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CA99293A
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Machine for forging metal rings
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GB190411338A
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Improved Machine for Welding or Forging Metal Rings.
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GB190411339A
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Improved Machine for Welding or Forging Metal Rings.
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CA92935A
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Link
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GB190317353A
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Improved Manufacture of Chain Rings or Links and Appliances therefor.
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US775815A
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Machine for welding or forging metallic rings or links.
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US802447A
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Mechanical manufacture of chain-links.
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GB190201961A
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Improved Method of Heating Metals in Electric Baths.
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GB189506160A
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Improvements in the Manufacture of Weldless Chains.
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