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GB190510247A
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Improvements in Machines for Rolling Screw Nut-blanks.
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US817360A
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Machine for rolling screw-nut blanks.
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GB190418395A
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Improvements in Machines for Rolling Screw Nut-blanks.
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GB190118379A
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Improvements in Bolt Forging Machines.
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GB190116771A
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Improvements in Machines for Facing Screw Nuts.
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GB190111036A
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Improvements in and connected with the Manufacture of Screw Bolts.
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GB190018677A
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Improvements in Machines for Finishing Nuts for Bolts and the like.
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GB190004324A
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Improvements in and relating to the Manufacture of Iron or Steel Bars for Screw Nut Making Purposes and Apparatus for Manufacturing the same.
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