US Patent: 863,551
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| Wrench
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Patentee:
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| Marion A. Mulrony (exact or similar names) - Plaza, WA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 24, 1907 |
| Granted: |
Aug. 13, 1907 |
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Stan Schulz
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Description: |
| The main point of the patent is the extensions which are connected by tapered square ends jamming into tapered square sockets, with provisions for a wedge key insert to loosen them, and collars with transverse openings for rod handles. The sockets for these extensions could be shaped to fit various shaped nuts, water and gas stop valves, etc. |
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