US Patent: 960,244
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| Manufacture of Screws
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Patentee:
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| William G. Allen (exact or similar names) - West Hartford, CT |
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Patent Dates:
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| Applied: |
Jan. 09, 1909 |
| Granted: |
Jun. 07, 1910 |
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Patent Pictures:
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William G. Allen patent June 7, 1910 |
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Stan Schulz
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Description: |
| The patent describes a process to form sockets in the heads of screws, using an angular punch and round die. Allen Safety Set Screws which had no protruding heads were a primary application for the process; the process was also used to form socket headed screws of various types, pipe plugs, and detachable sockets for a variety of socket wrench sets. All these were produced and sold by the Allen Mfg. Co. of Hartford, CT. The hexagon wrenches for the socket headed screws gave us the generic "Allen wrench." |
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