US Patent: 1,685,503
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| Socket Wrench
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Patentee:
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| Edward M. Pfauser (exact or similar names) - Milwaukee, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 19, 1927 |
| Granted: |
Sep. 25, 1928 |
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Patent Pictures:
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Edward M. Pfauser patent Sept. 25, 1928 |
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Stan Schulz
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Description: |
| The socket can be aligned for "frictional" hold with the spring / ball, or "positive" hold with the screw turned out into the hole in the side of the socket.
Alloy Artifacts notes this patent in the section on evolution of Blackhawk's "Lock-On" tools. The sequence noted there is: this patent, 1,807,134, 1,896,645, RE19,287, 1,927,844, 1,982,008 and 2,190,081. |
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