CA Patent: CA-55,989
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| Chain Wrench
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Patentees:
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| George Amborn (exact or similar names) - Brooklyn, NY |
| William Joseph Grinden (exact or similar names) - Brooklyn, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 04, 1897 |
| Granted: |
May 19, 1897 |
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Patent Pictures:
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J.H. Williams & Co. (assignee of W.J. Grinden and G. Amborn) patent May 19, 1897 edited from CANADIAN PATENT OFFICE RECORD |
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Stan Schulz
Canadian patent no. 55,989 in FLICKR
55,989 in Canadian Patents Database
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Description: |
| The focus in this patent is the shape of the "forked" double jaw structure and the pin that holds the fixed end of the chain. The overall wrench structure is similar to that in patent no. 577,653 and Canadian patent CA-55,988.
Corresponding U.S. patent no. 577,654 was issued February 23, 1897. |
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