US Patent: 1,165,989
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| Threading-die
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Patentees:
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| David Weir (exact or similar names) - Hartford, CT |
| William J. McIntyre (exact or similar names) - Hartford, CT |
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Patent Dates:
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| Applied: |
Mar. 18, 1915 |
| Granted: |
Dec. 28, 1915 |
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Stan Schulz
Alloy Artifacts page for Allen Mfg. Co.
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Description: |
| The assignee company, Allen Mfg. Co. of Hartford, was the originator of both the socket-head set screw ("the Allen safety set screw") and the Allen wrench, and was the first to manufacture pressed-and-broached socket wrench sets, the approach used to make virtually all sockets today. The company was founded in 1910 by William G. Allen. |
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