US Patent: 3,613,486
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| Pipe Wrench Adapter.
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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: |
Jan. 02, 1970 |
| Granted: |
Oct. 19, 1971 |
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Patent Pictures:
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1 | 2 | 3
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William C. Chapman patent October 19, 1971 |
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Stan Schulz
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Description: |
| The patent is for the piece with gripping teeth, and extended lip to engage standard sprocket chain, and shaped to fit into the slotted "way" of a standard adjustable end wrench. The patent includes alternate openings in the body to adapt this piece for use with a ratchet wrench or Allen wrench.
Known examples have some variation of "TIGER" as part of the marking -- TIGER TOOL or TIGER CLAW.
The specifications cite patent nos. 337,627, 3,205,735, and 3,314,317 as relevant prior art.
The third image shows the adapter in conjunction with a CHAPMAN TIGER-LOCK adjustable end wrench based on patent number 3,190,154. |
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