US Patent: 3,190,154
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| Adjustable End Wrench with Locking Means
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Patentee:
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| William C. Chapman (exact or similar names) - Brighton, MI |
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Patent Dates:
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| Applied: |
Nov. 13, 1963 |
| Granted: |
Jun. 22, 1965 |
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Patent Pictures:
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William C. Chapman patent June 22, 1965 |
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Stan Schulz
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Description: |
| The side lever applies end pressure to the spring-loaded adjusting knurl and movable jaw through an intermediate link. The wrench as produced does not include the tension adjustment screw or release lever shown in the patent.
The patent number appears on the lever handle.
Edward M. Apple - patent attorney
The third image shows a CHAPMAN TIGER-LOCK adjustable end wrench with lever lock in conjunction with a CHAPMAN TIGER-CLAW chain pipe wrench adapter based on patent number 3,613,486.
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