US Patent: 422,767
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Wrench
Improved Sliding-Jaw Wrench
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Patentee:
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| Isaac C. Gray (exact or similar names) - Tippecanoetown, IN |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 11, 1889 |
| Granted: |
Mar. 04, 1890 |
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Patent Pictures:
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Isaac C. Gray patent March 4, 1890 |
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Stan Schulz
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Description: |
| Rack and pawl adjustment combined with pivot clamping action; the adjustment notches are spaced in 1/4 inch increments. The handle partially or entirely encloses the shank of the "hook jaw" when the wrench is gripping a work piece. |
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