US Patent: 793,257
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| Wrench
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Patentee:
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| John Thomas Williams (exact or similar names) - Liverpool, England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 27, 1904 |
| Granted: |
Jun. 27, 1905 |
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Patent Pictures:
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John T. Williams patent June 27, 1905 |
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Stan Schulz
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Description: |
| This wrench is of the class known as "pipe grips." In this patent, the size adjustment is accomplished by a hinge pin engaging in one of a series of notches in the shank. The engagement is held by an internal spring. Two alternate arrangements are shown in the drawings.
Corresponding British patent GB-190321235 was registered Oct. 3, 1903.
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