US Patent: 881,216
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Chain Pipe Wrench
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Patentee:
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George Amborn (exact or similar names) - New York, NY |
USPTO Classifications: |
81/70 |
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Patent Dates:
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Applied: |
May 06, 1907 |
Granted: |
Mar. 10, 1908 |
Patent Pictures:
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George Amborn patent March 10, 1908 |
USPTO (New site tip) Google Patents
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Stan Schulz "AGRIPPA" (1907 write-up) - FLICKR
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Description: |
Improvement to wrench of the type in patent no. 698,780, to allow the chain to pass to either side of the center line of the handle regardless of which "face" of the toothed jaw was engaging the work. The construction includes alternate provisions for allowing the chain sufficient "free play" to allow the chain to swing to either side of the handle and head.
Study of WILLIAMS patents and advertising connects this to the AGIPPA Pipe & FITTINGS wrench, with several earlier patents appearing to be stages in the evolution of the design finally produced. A known example had a handle shortened to work in confined space.
Arthur C. Fraser & Co. - patent attorneys
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