US Patent: 1,711,083
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| Process of Making Wrenches
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Patentee:
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| Alphonse O. Brungardt (exact or similar names) - Scituate, MA |
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Patent Dates:
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| Applied: |
Feb. 20, 1928 |
| Granted: |
Apr. 30, 1929 |
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Patent Pictures:
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A. O. Brungardt Pat. April 30, 1929 |
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Stan Schulz
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Description: |
| The patent is invoked on a Walworth Company pipe wrench marked "WALCO WRENCH PAT NO 1711083 // WALWORTH CO. MADE IN U.S.A." The main design feature produced by the process in this patent is the opening which holds the adjusting knurl.
Pat. no. 1,862,001 is a further refinement of this design; some adjustable jaws on this wrench frame are based on pat. no. 1,862,002. |
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