US Patent: 2,495,699
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| Grip Tightening Device for Pipe Wrenches
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Patentee:
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| George H. Clark (exact or similar names) - Yakima, WA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 30, 1948 |
| Granted: |
Jan. 31, 1950 |
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Stan Schulz
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Description: |
| Clarence A. O'Brien & Harvey B. Jacobson - patent attorneys
My invention relates to grip tightening devices for pipe wrenches and of the type forming the subject matter of my United States Letter Patent Number 2,377,612, dated June 5, 1945, and over which the instant invention is designed as an improvement. The primary object of the instant invention is to provide in, a wrench having a slidable fulcruming jaw, a device of simple form and inexpensive construction operated by squeezing action of the hand on the wrench handle to swing the swingable jaw toward the relatively fixed jaw so as to tighten the grip on the work and then lock the swingable jaw so as to hold the jaws in tightened gripping relation. Another object is to provide a device of the character and for the purpose above set forth adapted for attachment to conventional types of pipe wrenches without necessitating material change in the basic structure of such wrenches. |
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