US Patent: 2,724,301
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| Locking Means for the Movable Jaw of a Slidable Side Jaw Wrench
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Patentees:
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| Maurice George Parent (exact or similar names) - Central Falls, RI |
| Louise Philip Voisin (exact or similar names) - Central Falls, RI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 04, 1954 |
| Granted: |
Nov. 22, 1955 |
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Patent Pictures:
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Albert G. Parent & Louise P. Voisin patent Nov. 22, 1955 |
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Stan Schulz
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Description: |
| The patent is based on the concept of teeth on the movable jaw engaging teeth on the adjusting means. In the adjustable open end, the teeth are on a spring-loaded slide; in the pipe wrench the teeth are on a spring-loaded pivoting block.
A 1922 French patent and U.S. patents 1,336,460, 1,397,214, 1,440,381, 1,445,551, 1,523,093, 1,557,690, and 1,792,338 are listed as references.
William Frederick Werner - patent attorney
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